[ltt-dev] Problems with LTTV GUI

[ltt-dev] Problems with LTTV GUI

[Gianluca Valentino]

Dear all,

I managed to solve the problem I had with su in a previous post (I'm sorry but I couldn't find out how to answer to my previous post so I decided to create a new one) by starting the lttv-gui with sudo.

I could then start and stop the trace. However, on pressing yes to open the trace, I got "Cannot open trace: maybe you should enter in the directory to select it?".
I did enter the directory where I had saved the trace, but I found a number of files such as ext4_0, ipc_0, kernel_0, vm_state_0, none of which I could open to view the trace graphically.

I am clueless as to what to do next.. I'd appreciate a reply.

Thanks,

Gianluca Valentino

 		 	   		  
_________________________________________________________________
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[ltt-dev] Problems with LTTV GUI

[Gianluca Valentino]

Dear all,

I managed to solve the problem I had with su in a previous post (I'm sorry but I couldn't find out how to answer to my previous post so I decided to create a new one) by starting the lttv-gui with sudo.

I could then start and stop the trace. However, on pressing yes to open the trace, I got "Cannot open trace: maybe you should enter in the directory to select it?".
I did enter the directory where I had saved the trace, but I found a number of files such as ext4_0, ipc_0, kernel_0, vm_state_0, none of which I could open to view the trace graphically.

I am clueless as to what to do next.. I'd appreciate a reply.

Thanks,

Gianluca Valentino

 		 	   		  
_________________________________________________________________
Hotmail: Trusted email with Microsoft?s powerful SPAM protection.
https://signup.live.com/signup.aspx?id=60969
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[ltt-dev] Problems with LTTV GUI

[Gianluca Valentino]

Dear all,

I managed to solve the problem I had with su in a previous post (I'm sorry but I couldn't find out how to answer to my previous post so I decided to create a new one) by starting the lttv-gui with sudo.

I could then start and stop the trace. However, on pressing yes to open the trace, I got "Cannot open trace: maybe you should enter in the directory to select it?".
I did enter the directory where I had saved the trace, but I found a number of files such as ext4_0, ipc_0, kernel_0, vm_state_0, none of which I could open to view the trace graphically.

I am clueless as to what to do next.. I'd appreciate a reply.

Thanks,

Gianluca Valentino

 		 	   		  
_________________________________________________________________
Hotmail: Trusted email with Microsoft?s powerful SPAM protection.
https://signup.live.com/signup.aspx?id=60969
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[ltt-dev] Problems with LTTV GUI

[jerome zh]

2010/5/18 Gianluca Valentino <g_v_valentino at hotmail.com>

>  Dear all,
>
> I managed to solve the problem I had with su in a previous post (I'm sorry
> but I couldn't find out how to answer to my previous post so I decided to
> create a new one) by starting the lttv-gui with sudo.
>
> I could then start and stop the trace. However, on pressing yes to open the
> trace, I got "Cannot open trace: maybe you should enter in the directory to
> select it?".
> I did enter the directory where I had saved the trace, but I found a number
> of files such as ext4_0, ipc_0, kernel_0, vm_state_0, none of which I could
> open to view the trace graphically.
>
> I am clueless as to what to do next.. I'd appreciate a reply.
>
> Thanks,
>
> Gianluca Valentino
>

Were these files zero sized?

-- 
Regards,

Jerome
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[ltt-dev] Problems with LTTV GUI

[jerome zh]

2010/5/18 Gianluca Valentino <g_v_valentino at hotmail.com>

>  Dear all,
>
> I managed to solve the problem I had with su in a previous post (I'm sorry
> but I couldn't find out how to answer to my previous post so I decided to
> create a new one) by starting the lttv-gui with sudo.
>
> I could then start and stop the trace. However, on pressing yes to open the
> trace, I got "Cannot open trace: maybe you should enter in the directory to
> select it?".
> I did enter the directory where I had saved the trace, but I found a number
> of files such as ext4_0, ipc_0, kernel_0, vm_state_0, none of which I could
> open to view the trace graphically.
>
> I am clueless as to what to do next.. I'd appreciate a reply.
>
> Thanks,
>
> Gianluca Valentino
>

Were these files zero sized?

-- 
Regards,

Jerome
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[ltt-dev] Problems with LTTV GUI

[jerome zh]

2010/5/18 Gianluca Valentino <g_v_valentino at hotmail.com>

>  Dear all,
>
> I managed to solve the problem I had with su in a previous post (I'm sorry
> but I couldn't find out how to answer to my previous post so I decided to
> create a new one) by starting the lttv-gui with sudo.
>
> I could then start and stop the trace. However, on pressing yes to open the
> trace, I got "Cannot open trace: maybe you should enter in the directory to
> select it?".
> I did enter the directory where I had saved the trace, but I found a number
> of files such as ext4_0, ipc_0, kernel_0, vm_state_0, none of which I could
> open to view the trace graphically.
>
> I am clueless as to what to do next.. I'd appreciate a reply.
>
> Thanks,
>
> Gianluca Valentino
>

Were these files zero sized?

-- 
Regards,

Jerome
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[ltt-dev] Problems with LTTV GUI

[Gianluca Valentino]

 


From: g_v_valentino@hotmail.com
To: jeromezhr at gmail.com
Subject: RE: [ltt-dev] Problems with LTTV GUI
Date: Tue, 18 May 2010 15:18:16 +0200



Dear Jerome,
 
Thanks for your reply. Yes they are all zero-sized..
 
Regards,
 
Gianluca
 


Date: Tue, 18 May 2010 19:43:56 +0800
Subject: Re: [ltt-dev] Problems with LTTV GUI
From: jeromezhr@gmail.com
To: g_v_valentino at hotmail.com
CC: ltt-dev at lists.casi.polymtl.ca

2010/5/18 Gianluca Valentino <g_v_valentino at hotmail.com>



Dear all,

I managed to solve the problem I had with su in a previous post (I'm sorry but I couldn't find out how to answer to my previous post so I decided to create a new one) by starting the lttv-gui with sudo.

I could then start and stop the trace. However, on pressing yes to open the trace, I got "Cannot open trace: maybe you should enter in the directory to select it?".
I did enter the directory where I had saved the trace, but I found a number of files such as ext4_0, ipc_0, kernel_0, vm_state_0, none of which I could open to view the trace graphically.

I am clueless as to what to do next.. I'd appreciate a reply.

Thanks,

Gianluca Valentino
 
Were these files zero sized? 

-- 
Regards,

Jerome



Hotmail: Trusted email with Microsoft?s powerful SPAM protection. Sign up now. 		 	   		  
_________________________________________________________________
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[ltt-dev] Problems with LTTV GUI

[Gianluca Valentino]

 


From: g_v_valentino@hotmail.com
To: jeromezhr at gmail.com
Subject: RE: [ltt-dev] Problems with LTTV GUI
Date: Tue, 18 May 2010 15:18:16 +0200



Dear Jerome,
 
Thanks for your reply. Yes they are all zero-sized..
 
Regards,
 
Gianluca
 


Date: Tue, 18 May 2010 19:43:56 +0800
Subject: Re: [ltt-dev] Problems with LTTV GUI
From: jeromezhr@gmail.com
To: g_v_valentino at hotmail.com
CC: ltt-dev at lists.casi.polymtl.ca

2010/5/18 Gianluca Valentino <g_v_valentino at hotmail.com>



Dear all,

I managed to solve the problem I had with su in a previous post (I'm sorry but I couldn't find out how to answer to my previous post so I decided to create a new one) by starting the lttv-gui with sudo.

I could then start and stop the trace. However, on pressing yes to open the trace, I got "Cannot open trace: maybe you should enter in the directory to select it?".
I did enter the directory where I had saved the trace, but I found a number of files such as ext4_0, ipc_0, kernel_0, vm_state_0, none of which I could open to view the trace graphically.

I am clueless as to what to do next.. I'd appreciate a reply.

Thanks,

Gianluca Valentino
 
Were these files zero sized? 

-- 
Regards,

Jerome



Hotmail: Trusted email with Microsoft?s powerful SPAM protection. Sign up now. 		 	   		  
_________________________________________________________________
Hotmail: Trusted email with Microsoft?s powerful SPAM protection.
https://signup.live.com/signup.aspx?id=60969
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[ltt-dev] Problems with LTTV GUI

[Gianluca Valentino]

 


From: g_v_valentino@hotmail.com
To: jeromezhr at gmail.com
Subject: RE: [ltt-dev] Problems with LTTV GUI
Date: Tue, 18 May 2010 15:18:16 +0200



Dear Jerome,
 
Thanks for your reply. Yes they are all zero-sized..
 
Regards,
 
Gianluca
 


Date: Tue, 18 May 2010 19:43:56 +0800
Subject: Re: [ltt-dev] Problems with LTTV GUI
From: jeromezhr@gmail.com
To: g_v_valentino at hotmail.com
CC: ltt-dev at lists.casi.polymtl.ca

2010/5/18 Gianluca Valentino <g_v_valentino at hotmail.com>



Dear all,

I managed to solve the problem I had with su in a previous post (I'm sorry but I couldn't find out how to answer to my previous post so I decided to create a new one) by starting the lttv-gui with sudo.

I could then start and stop the trace. However, on pressing yes to open the trace, I got "Cannot open trace: maybe you should enter in the directory to select it?".
I did enter the directory where I had saved the trace, but I found a number of files such as ext4_0, ipc_0, kernel_0, vm_state_0, none of which I could open to view the trace graphically.

I am clueless as to what to do next.. I'd appreciate a reply.

Thanks,

Gianluca Valentino
 
Were these files zero sized? 

-- 
Regards,

Jerome



Hotmail: Trusted email with Microsoft?s powerful SPAM protection. Sign up now. 		 	   		  
_________________________________________________________________
Hotmail: Trusted email with Microsoft?s powerful SPAM protection.
https://signup.live.com/signup.aspx?id=60969
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[ltt-dev] Problems with LTTV GUI

[jerome zh]

2010/5/18 Gianluca Valentino <g_v_valentino at hotmail.com>

>
>
> ------------------------------
> From: g_v_valentino@hotmail.com
> To: jeromezhr at gmail.com
> Subject: RE: [ltt-dev] Problems with LTTV GUI
> Date: Tue, 18 May 2010 15:18:16 +0200
>
>
> Dear Jerome,
>
> Thanks for your reply. Yes they are all zero-sized..
>
> Regards,
>
> Gianluca
>
> ------------------------------
>
> So I think there must be some problems in traceing.
Have you destroyed your trace correctly?

-- 
Regards,

Jerome
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[ltt-dev] Problems with LTTV GUI

[jerome zh]

2010/5/18 Gianluca Valentino <g_v_valentino at hotmail.com>

>
>
> ------------------------------
> From: g_v_valentino@hotmail.com
> To: jeromezhr at gmail.com
> Subject: RE: [ltt-dev] Problems with LTTV GUI
> Date: Tue, 18 May 2010 15:18:16 +0200
>
>
> Dear Jerome,
>
> Thanks for your reply. Yes they are all zero-sized..
>
> Regards,
>
> Gianluca
>
> ------------------------------
>
> So I think there must be some problems in traceing.
Have you destroyed your trace correctly?

-- 
Regards,

Jerome
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[ltt-dev] Problems with LTTV GUI

[jerome zh]

2010/5/18 Gianluca Valentino <g_v_valentino at hotmail.com>

>
>
> ------------------------------
> From: g_v_valentino@hotmail.com
> To: jeromezhr at gmail.com
> Subject: RE: [ltt-dev] Problems with LTTV GUI
> Date: Tue, 18 May 2010 15:18:16 +0200
>
>
> Dear Jerome,
>
> Thanks for your reply. Yes they are all zero-sized..
>
> Regards,
>
> Gianluca
>
> ------------------------------
>
> So I think there must be some problems in traceing.
Have you destroyed your trace correctly?

-- 
Regards,

Jerome
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[ltt-dev] Problems with LTTV GUI

[Gianluca Valentino]

Dear Jerome,

I think I have destroyed it correctly, at least that's what it says when I run it in text-mode (see no. 8 below).. I will explain each step that I have done after booting with the LTTng patched kernel below:

1. Edit system-wide configuration (as explained in the guide: http://lttng.org/cgi-bin/gitweb.cgi?p=lttv.git;a=blob_plain;f=LTTngManual.html#section2)
mkdir /mnt/debugfs
cp /etc/fstab /etc/fstab.lttng.bkp
echo "debugfs         /mnt/debugfs    debugfs rw              0       0"  >> /etc/fstab
2. Insert the specific modules (every time I boot)
modprobe kernel-trace
modprobe mm-trace
modprobe net-trace
modprobe fs-trace
modprobe jbd2-trace
modprobe ext4-trace
modprobe syscall-trace
modprobe trap-trace
modprobe ltt-statedump

I couldn't do

modprobe ltt-trace-control
modprobe ltt-marker-control
modprobe ltt-tracer
modprobe ltt-serialize
modprobe ltt-relay

However these should be in-built as they appear as .o and .c files in /lib/modules/2.6.31.5-custom/build/ltt

3. I installed the ltt-control and lttv packages as explained in the guide above

4. echo text > sudo tee -a /mnt/debugfs/ltt/write_event does not give me any error

5. I execute sudo ltt-armall, and sudo lttv-gui

6. I click on the 'traffic light' icon and I enter the root password. I click on start and then stop. LTTng Trace Control asks me if I want to open the trace in LTTV. I click yes, and it tells me "Cannot open trace: maybe you should enter in the directory to select it". Checking the sizes of the files in /tmp/trace1 (as you asked me) are all zero-sized.

7. With the CLI version of lttv: I execute sudo lttctl -C -w /tmp/trace1 trace1. It gives me:

Linux Trace Toolkit Trace Control 0.84-07042010

Controlling trace : trace1

lttctl: Creating trace
lttctl: Forking lttd
Linux Trace Toolkit Trace Daemon 0.84-07042010

Reading from debugfs directory : /sys/kernel/debug/ltt/trace1
Writing to trace directory : /tmp/trace1

lttctl: Starting trace
ubuntu at beagleboard:~$

8. Then I execute sudo lttctl -D trace1 to destroy trace. It gives me:



Linux Trace Toolkit Trace Control 0.84-07042010

Controlling trace : trace1

lttctl: Pausing trace
lttctl: Destroying trace
ubuntu at beagleboard:~$

9. The only error I encountered was when I tried lttv -m textDump -t /tmp/trace1 for a simple trace dump in text format.

After a series of long lines like:

The input data file /tmp/trace1/net_0 does not contain a trace

it told me WARNING **: Trace /tmp/trace1 has no metadata tracefile

and CRITICAL **: cannot open trace /tmp/trace1

and finally: /usr/local/bin/lttv: line 15: 2152 Segmentation fault $0.real $*



Date: Tue, 18 May 2010 21:27:20 +0800
Subject: Re: [ltt-dev] Problems with LTTV GUI
From: jeromezhr@gmail.com
To: g_v_valentino at hotmail.com
CC: ltt-dev at lists.casi.polymtl.ca

2010/5/18 Gianluca Valentino <g_v_valentino at hotmail.com>







 


From: g_v_valentino@hotmail.com
To: jeromezhr at gmail.com
Subject: RE: [ltt-dev] Problems with LTTV GUI

Date: Tue, 18 May 2010 15:18:16 +0200



Dear Jerome,
 
Thanks for your reply. Yes they are all zero-sized..
 
Regards,
 
Gianluca
 


So I think there must be some problems in traceing.
Have you destroyed your trace correctly?
-- 
Regards,

Jerome
 		 	   		  
_________________________________________________________________
Your E-mail and More On-the-Go. Get Windows Live Hotmail Free.
https://signup.live.com/signup.aspx?id=60969
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[ltt-dev] Problems with LTTV GUI

[Gianluca Valentino]

Dear Jerome,

I think I have destroyed it correctly, at least that's what it says when I run it in text-mode (see no. 8 below).. I will explain each step that I have done after booting with the LTTng patched kernel below:

1. Edit system-wide configuration (as explained in the guide: http://lttng.org/cgi-bin/gitweb.cgi?p=lttv.git;a=blob_plain;f=LTTngManual.html#section2)
mkdir /mnt/debugfs
cp /etc/fstab /etc/fstab.lttng.bkp
echo "debugfs         /mnt/debugfs    debugfs rw              0       0"  >> /etc/fstab
2. Insert the specific modules (every time I boot)
modprobe kernel-trace
modprobe mm-trace
modprobe net-trace
modprobe fs-trace
modprobe jbd2-trace
modprobe ext4-trace
modprobe syscall-trace
modprobe trap-trace
modprobe ltt-statedump

I couldn't do

modprobe ltt-trace-control
modprobe ltt-marker-control
modprobe ltt-tracer
modprobe ltt-serialize
modprobe ltt-relay

However these should be in-built as they appear as .o and .c files in /lib/modules/2.6.31.5-custom/build/ltt

3. I installed the ltt-control and lttv packages as explained in the guide above

4. echo text > sudo tee -a /mnt/debugfs/ltt/write_event does not give me any error

5. I execute sudo ltt-armall, and sudo lttv-gui

6. I click on the 'traffic light' icon and I enter the root password. I click on start and then stop. LTTng Trace Control asks me if I want to open the trace in LTTV. I click yes, and it tells me "Cannot open trace: maybe you should enter in the directory to select it". Checking the sizes of the files in /tmp/trace1 (as you asked me) are all zero-sized.

7. With the CLI version of lttv: I execute sudo lttctl -C -w /tmp/trace1 trace1. It gives me:

Linux Trace Toolkit Trace Control 0.84-07042010

Controlling trace : trace1

lttctl: Creating trace
lttctl: Forking lttd
Linux Trace Toolkit Trace Daemon 0.84-07042010

Reading from debugfs directory : /sys/kernel/debug/ltt/trace1
Writing to trace directory : /tmp/trace1

lttctl: Starting trace
ubuntu at beagleboard:~$

8. Then I execute sudo lttctl -D trace1 to destroy trace. It gives me:



Linux Trace Toolkit Trace Control 0.84-07042010

Controlling trace : trace1

lttctl: Pausing trace
lttctl: Destroying trace
ubuntu at beagleboard:~$

9. The only error I encountered was when I tried lttv -m textDump -t /tmp/trace1 for a simple trace dump in text format.

After a series of long lines like:

The input data file /tmp/trace1/net_0 does not contain a trace

it told me WARNING **: Trace /tmp/trace1 has no metadata tracefile

and CRITICAL **: cannot open trace /tmp/trace1

and finally: /usr/local/bin/lttv: line 15: 2152 Segmentation fault $0.real $*



Date: Tue, 18 May 2010 21:27:20 +0800
Subject: Re: [ltt-dev] Problems with LTTV GUI
From: jeromezhr@gmail.com
To: g_v_valentino at hotmail.com
CC: ltt-dev at lists.casi.polymtl.ca

2010/5/18 Gianluca Valentino <g_v_valentino at hotmail.com>







 


From: g_v_valentino@hotmail.com
To: jeromezhr at gmail.com
Subject: RE: [ltt-dev] Problems with LTTV GUI

Date: Tue, 18 May 2010 15:18:16 +0200



Dear Jerome,
 
Thanks for your reply. Yes they are all zero-sized..
 
Regards,
 
Gianluca
 


So I think there must be some problems in traceing.
Have you destroyed your trace correctly?
-- 
Regards,

Jerome
 		 	   		  
_________________________________________________________________
Your E-mail and More On-the-Go. Get Windows Live Hotmail Free.
https://signup.live.com/signup.aspx?id=60969
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[ltt-dev] Problems with LTTV GUI

[Gianluca Valentino]

Dear Jerome,

I think I have destroyed it correctly, at least that's what it says when I run it in text-mode (see no. 8 below).. I will explain each step that I have done after booting with the LTTng patched kernel below:

1. Edit system-wide configuration (as explained in the guide: http://lttng.org/cgi-bin/gitweb.cgi?p=lttv.git;a=blob_plain;f=LTTngManual.html#section2)
mkdir /mnt/debugfs
cp /etc/fstab /etc/fstab.lttng.bkp
echo "debugfs         /mnt/debugfs    debugfs rw              0       0"  >> /etc/fstab
2. Insert the specific modules (every time I boot)
modprobe kernel-trace
modprobe mm-trace
modprobe net-trace
modprobe fs-trace
modprobe jbd2-trace
modprobe ext4-trace
modprobe syscall-trace
modprobe trap-trace
modprobe ltt-statedump

I couldn't do

modprobe ltt-trace-control
modprobe ltt-marker-control
modprobe ltt-tracer
modprobe ltt-serialize
modprobe ltt-relay

However these should be in-built as they appear as .o and .c files in /lib/modules/2.6.31.5-custom/build/ltt

3. I installed the ltt-control and lttv packages as explained in the guide above

4. echo text > sudo tee -a /mnt/debugfs/ltt/write_event does not give me any error

5. I execute sudo ltt-armall, and sudo lttv-gui

6. I click on the 'traffic light' icon and I enter the root password. I click on start and then stop. LTTng Trace Control asks me if I want to open the trace in LTTV. I click yes, and it tells me "Cannot open trace: maybe you should enter in the directory to select it". Checking the sizes of the files in /tmp/trace1 (as you asked me) are all zero-sized.

7. With the CLI version of lttv: I execute sudo lttctl -C -w /tmp/trace1 trace1. It gives me:

Linux Trace Toolkit Trace Control 0.84-07042010

Controlling trace : trace1

lttctl: Creating trace
lttctl: Forking lttd
Linux Trace Toolkit Trace Daemon 0.84-07042010

Reading from debugfs directory : /sys/kernel/debug/ltt/trace1
Writing to trace directory : /tmp/trace1

lttctl: Starting trace
ubuntu at beagleboard:~$

8. Then I execute sudo lttctl -D trace1 to destroy trace. It gives me:



Linux Trace Toolkit Trace Control 0.84-07042010

Controlling trace : trace1

lttctl: Pausing trace
lttctl: Destroying trace
ubuntu at beagleboard:~$

9. The only error I encountered was when I tried lttv -m textDump -t /tmp/trace1 for a simple trace dump in text format.

After a series of long lines like:

The input data file /tmp/trace1/net_0 does not contain a trace

it told me WARNING **: Trace /tmp/trace1 has no metadata tracefile

and CRITICAL **: cannot open trace /tmp/trace1

and finally: /usr/local/bin/lttv: line 15: 2152 Segmentation fault $0.real $*



Date: Tue, 18 May 2010 21:27:20 +0800
Subject: Re: [ltt-dev] Problems with LTTV GUI
From: jeromezhr@gmail.com
To: g_v_valentino at hotmail.com
CC: ltt-dev at lists.casi.polymtl.ca

2010/5/18 Gianluca Valentino <g_v_valentino at hotmail.com>







 


From: g_v_valentino@hotmail.com
To: jeromezhr at gmail.com
Subject: RE: [ltt-dev] Problems with LTTV GUI

Date: Tue, 18 May 2010 15:18:16 +0200



Dear Jerome,
 
Thanks for your reply. Yes they are all zero-sized..
 
Regards,
 
Gianluca
 


So I think there must be some problems in traceing.
Have you destroyed your trace correctly?
-- 
Regards,

Jerome
 		 	   		  
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[ltt-dev] Problems with LTTV GUI

[Mathieu Desnoyers]

* Gianluca Valentino (g_v_valentino at hotmail.com) wrote:
> 
> Dear Jerome,
> 
> I think I have destroyed it correctly, at least that's what it says when I run it in text-mode (see no. 8 below).. I will explain each step that I have done after booting with the LTTng patched kernel below:
> 
> 1. Edit system-wide configuration (as explained in the guide: http://lttng.org/cgi-bin/gitweb.cgi?p=lttv.git;a=blob_plain;f=LTTngManual.html#section2)
> mkdir /mnt/debugfs
> cp /etc/fstab /etc/fstab.lttng.bkp
> echo "debugfs         /mnt/debugfs    debugfs rw              0       0"  >> /etc/fstab
> 2. Insert the specific modules (every time I boot)
> modprobe kernel-trace
> modprobe mm-trace
> modprobe net-trace
> modprobe fs-trace
> modprobe jbd2-trace
> modprobe ext4-trace
> modprobe syscall-trace
> modprobe trap-trace
> modprobe ltt-statedump
> 
> I couldn't do
> 
> modprobe ltt-trace-control
> modprobe ltt-marker-control
> modprobe ltt-tracer
> modprobe ltt-serialize
> modprobe ltt-relay
> 
> However these should be in-built as they appear as .o and .c files in /lib/modules/2.6.31.5-custom/build/ltt

Please see the Compatibility list, available from the download section
of the lttng.org website:

ltt-control 0.84 is compatible with LTTng 0.191 to 0.214, which means
kernels 2.6.32.4 to 2.6.33.4. You are using a 2.6.31.5 tree, so I wonder
which LTTng version you use.

Thanks,

Mathieu

> 
> 3. I installed the ltt-control and lttv packages as explained in the guide above
> 
> 4. echo text > sudo tee -a /mnt/debugfs/ltt/write_event does not give me any error
> 
> 5. I execute sudo ltt-armall, and sudo lttv-gui
> 
> 6. I click on the 'traffic light' icon and I enter the root password. I click on start and then stop. LTTng Trace Control asks me if I want to open the trace in LTTV. I click yes, and it tells me "Cannot open trace: maybe you should enter in the directory to select it". Checking the sizes of the files in /tmp/trace1 (as you asked me) are all zero-sized.
> 
> 7. With the CLI version of lttv: I execute sudo lttctl -C -w /tmp/trace1 trace1. It gives me:
> 
> Linux Trace Toolkit Trace Control 0.84-07042010
> 
> Controlling trace : trace1
> 
> lttctl: Creating trace
> lttctl: Forking lttd
> Linux Trace Toolkit Trace Daemon 0.84-07042010
> 
> Reading from debugfs directory : /sys/kernel/debug/ltt/trace1
> Writing to trace directory : /tmp/trace1
> 
> lttctl: Starting trace
> ubuntu at beagleboard:~$
> 
> 8. Then I execute sudo lttctl -D trace1 to destroy trace. It gives me:
> 
> 
> 
> Linux Trace Toolkit Trace Control 0.84-07042010
> 
> Controlling trace : trace1
> 
> lttctl: Pausing trace
> lttctl: Destroying trace
> ubuntu at beagleboard:~$
> 
> 9. The only error I encountered was when I tried lttv -m textDump -t /tmp/trace1 for a simple trace dump in text format.
> 
> After a series of long lines like:
> 
> The input data file /tmp/trace1/net_0 does not contain a trace
> 
> it told me WARNING **: Trace /tmp/trace1 has no metadata tracefile
> 
> and CRITICAL **: cannot open trace /tmp/trace1
> 
> and finally: /usr/local/bin/lttv: line 15: 2152 Segmentation fault $0.real $*
> 
> 
> 
> Date: Tue, 18 May 2010 21:27:20 +0800
> Subject: Re: [ltt-dev] Problems with LTTV GUI
> From: jeromezhr@gmail.com
> To: g_v_valentino at hotmail.com
> CC: ltt-dev at lists.casi.polymtl.ca
> 
> 2010/5/18 Gianluca Valentino <g_v_valentino at hotmail.com>
> 
> 
> 
> 
> 
> 
> 
>  
> 
> 
> From: g_v_valentino@hotmail.com
> To: jeromezhr at gmail.com
> Subject: RE: [ltt-dev] Problems with LTTV GUI
> 
> Date: Tue, 18 May 2010 15:18:16 +0200
> 
> 
> 
> Dear Jerome,
>  
> Thanks for your reply. Yes they are all zero-sized..
>  
> Regards,
>  
> Gianluca
>  
> 
> 
> So I think there must be some problems in traceing.
> Have you destroyed your trace correctly?
> -- 
> Regards,
> 
> Jerome
>  		 	   		  
> _________________________________________________________________
> Your E-mail and More On-the-Go. Get Windows Live Hotmail Free.
> https://signup.live.com/signup.aspx?id=60969
> _______________________________________________
> ltt-dev mailing list
> ltt-dev at lists.casi.polymtl.ca
> http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev


-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com

[ltt-dev] Problems with LTTV GUI (Solved)

[Gianluca Valentino]

Thank you Jerome and Mathieu,

Although I patched the kernel correctly my ltt-control and lttv packages were incompatible with the 2.6.31.5 tree. Installing compatible versions did the trick.

Regards,

Gianluca

> Date: Tue, 18 May 2010 11:02:04 -0400
> From: compudj@krystal.dyndns.org
> To: g_v_valentino at hotmail.com
> CC: jeromezhr at gmail.com; ltt-dev at lists.casi.polymtl.ca
> Subject: Re: [ltt-dev] Problems with LTTV GUI
> 
> * Gianluca Valentino (g_v_valentino at hotmail.com) wrote:
> > 
> > Dear Jerome,
> > 
> > I think I have destroyed it correctly, at least that's what it says when I run it in text-mode (see no. 8 below).. I will explain each step that I have done after booting with the LTTng patched kernel below:
> > 
> > 1. Edit system-wide configuration (as explained in the guide: http://lttng.org/cgi-bin/gitweb.cgi?p=lttv.git;a=blob_plain;f=LTTngManual.html#section2)
> > mkdir /mnt/debugfs
> > cp /etc/fstab /etc/fstab.lttng.bkp
> > echo "debugfs         /mnt/debugfs    debugfs rw              0       0"  >> /etc/fstab
> > 2. Insert the specific modules (every time I boot)
> > modprobe kernel-trace
> > modprobe mm-trace
> > modprobe net-trace
> > modprobe fs-trace
> > modprobe jbd2-trace
> > modprobe ext4-trace
> > modprobe syscall-trace
> > modprobe trap-trace
> > modprobe ltt-statedump
> > 
> > I couldn't do
> > 
> > modprobe ltt-trace-control
> > modprobe ltt-marker-control
> > modprobe ltt-tracer
> > modprobe ltt-serialize
> > modprobe ltt-relay
> > 
> > However these should be in-built as they appear as .o and .c files in /lib/modules/2.6.31.5-custom/build/ltt
> 
> Please see the Compatibility list, available from the download section
> of the lttng.org website:
> 
> ltt-control 0.84 is compatible with LTTng 0.191 to 0.214, which means
> kernels 2.6.32.4 to 2.6.33.4. You are using a 2.6.31.5 tree, so I wonder
> which LTTng version you use.
> 
> Thanks,
> 
> Mathieu
> 
> > 
> > 3. I installed the ltt-control and lttv packages as explained in the guide above
> > 
> > 4. echo text > sudo tee -a /mnt/debugfs/ltt/write_event does not give me any error
> > 
> > 5. I execute sudo ltt-armall, and sudo lttv-gui
> > 
> > 6. I click on the 'traffic light' icon and I enter the root password. I click on start and then stop. LTTng Trace Control asks me if I want to open the trace in LTTV. I click yes, and it tells me "Cannot open trace: maybe you should enter in the directory to select it". Checking the sizes of the files in /tmp/trace1 (as you asked me) are all zero-sized.
> > 
> > 7. With the CLI version of lttv: I execute sudo lttctl -C -w /tmp/trace1 trace1. It gives me:
> > 
> > Linux Trace Toolkit Trace Control 0.84-07042010
> > 
> > Controlling trace : trace1
> > 
> > lttctl: Creating trace
> > lttctl: Forking lttd
> > Linux Trace Toolkit Trace Daemon 0.84-07042010
> > 
> > Reading from debugfs directory : /sys/kernel/debug/ltt/trace1
> > Writing to trace directory : /tmp/trace1
> > 
> > lttctl: Starting trace
> > ubuntu at beagleboard:~$
> > 
> > 8. Then I execute sudo lttctl -D trace1 to destroy trace. It gives me:
> > 
> > 
> > 
> > Linux Trace Toolkit Trace Control 0.84-07042010
> > 
> > Controlling trace : trace1
> > 
> > lttctl: Pausing trace
> > lttctl: Destroying trace
> > ubuntu at beagleboard:~$
> > 
> > 9. The only error I encountered was when I tried lttv -m textDump -t /tmp/trace1 for a simple trace dump in text format.
> > 
> > After a series of long lines like:
> > 
> > The input data file /tmp/trace1/net_0 does not contain a trace
> > 
> > it told me WARNING **: Trace /tmp/trace1 has no metadata tracefile
> > 
> > and CRITICAL **: cannot open trace /tmp/trace1
> > 
> > and finally: /usr/local/bin/lttv: line 15: 2152 Segmentation fault $0.real $*
> > 
> > 
> > 
> > Date: Tue, 18 May 2010 21:27:20 +0800
> > Subject: Re: [ltt-dev] Problems with LTTV GUI
> > From: jeromezhr@gmail.com
> > To: g_v_valentino at hotmail.com
> > CC: ltt-dev at lists.casi.polymtl.ca
> > 
> > 2010/5/18 Gianluca Valentino <g_v_valentino at hotmail.com>
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> >  
> > 
> > 
> > From: g_v_valentino@hotmail.com
> > To: jeromezhr at gmail.com
> > Subject: RE: [ltt-dev] Problems with LTTV GUI
> > 
> > Date: Tue, 18 May 2010 15:18:16 +0200
> > 
> > 
> > 
> > Dear Jerome,
> >  
> > Thanks for your reply. Yes they are all zero-sized..
> >  
> > Regards,
> >  
> > Gianluca
> >  
> > 
> > 
> > So I think there must be some problems in traceing.
> > Have you destroyed your trace correctly?
> > -- 
> > Regards,
> > 
> > Jerome
> >  		 	   		  
> > _________________________________________________________________
> > Your E-mail and More On-the-Go. Get Windows Live Hotmail Free.
> > https://signup.live.com/signup.aspx?id=60969
> > _______________________________________________
> > ltt-dev mailing list
> > ltt-dev at lists.casi.polymtl.ca
> > http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
> 
> 
> -- 
> Mathieu Desnoyers
> Operating System Efficiency R&D Consultant
> EfficiOS Inc.
> http://www.efficios.com
 		 	   		  
_________________________________________________________________
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[ltt-dev] Problems with LTTV GUI (Solved)

[Gianluca Valentino]

Thank you Jerome and Mathieu,

Although I patched the kernel correctly my ltt-control and lttv packages were incompatible with the 2.6.31.5 tree. Installing compatible versions did the trick.

Regards,

Gianluca

> Date: Tue, 18 May 2010 11:02:04 -0400
> From: compudj@krystal.dyndns.org
> To: g_v_valentino at hotmail.com
> CC: jeromezhr at gmail.com; ltt-dev at lists.casi.polymtl.ca
> Subject: Re: [ltt-dev] Problems with LTTV GUI
> 
> * Gianluca Valentino (g_v_valentino at hotmail.com) wrote:
> > 
> > Dear Jerome,
> > 
> > I think I have destroyed it correctly, at least that's what it says when I run it in text-mode (see no. 8 below).. I will explain each step that I have done after booting with the LTTng patched kernel below:
> > 
> > 1. Edit system-wide configuration (as explained in the guide: http://lttng.org/cgi-bin/gitweb.cgi?p=lttv.git;a=blob_plain;f=LTTngManual.html#section2)
> > mkdir /mnt/debugfs
> > cp /etc/fstab /etc/fstab.lttng.bkp
> > echo "debugfs         /mnt/debugfs    debugfs rw              0       0"  >> /etc/fstab
> > 2. Insert the specific modules (every time I boot)
> > modprobe kernel-trace
> > modprobe mm-trace
> > modprobe net-trace
> > modprobe fs-trace
> > modprobe jbd2-trace
> > modprobe ext4-trace
> > modprobe syscall-trace
> > modprobe trap-trace
> > modprobe ltt-statedump
> > 
> > I couldn't do
> > 
> > modprobe ltt-trace-control
> > modprobe ltt-marker-control
> > modprobe ltt-tracer
> > modprobe ltt-serialize
> > modprobe ltt-relay
> > 
> > However these should be in-built as they appear as .o and .c files in /lib/modules/2.6.31.5-custom/build/ltt
> 
> Please see the Compatibility list, available from the download section
> of the lttng.org website:
> 
> ltt-control 0.84 is compatible with LTTng 0.191 to 0.214, which means
> kernels 2.6.32.4 to 2.6.33.4. You are using a 2.6.31.5 tree, so I wonder
> which LTTng version you use.
> 
> Thanks,
> 
> Mathieu
> 
> > 
> > 3. I installed the ltt-control and lttv packages as explained in the guide above
> > 
> > 4. echo text > sudo tee -a /mnt/debugfs/ltt/write_event does not give me any error
> > 
> > 5. I execute sudo ltt-armall, and sudo lttv-gui
> > 
> > 6. I click on the 'traffic light' icon and I enter the root password. I click on start and then stop. LTTng Trace Control asks me if I want to open the trace in LTTV. I click yes, and it tells me "Cannot open trace: maybe you should enter in the directory to select it". Checking the sizes of the files in /tmp/trace1 (as you asked me) are all zero-sized.
> > 
> > 7. With the CLI version of lttv: I execute sudo lttctl -C -w /tmp/trace1 trace1. It gives me:
> > 
> > Linux Trace Toolkit Trace Control 0.84-07042010
> > 
> > Controlling trace : trace1
> > 
> > lttctl: Creating trace
> > lttctl: Forking lttd
> > Linux Trace Toolkit Trace Daemon 0.84-07042010
> > 
> > Reading from debugfs directory : /sys/kernel/debug/ltt/trace1
> > Writing to trace directory : /tmp/trace1
> > 
> > lttctl: Starting trace
> > ubuntu at beagleboard:~$
> > 
> > 8. Then I execute sudo lttctl -D trace1 to destroy trace. It gives me:
> > 
> > 
> > 
> > Linux Trace Toolkit Trace Control 0.84-07042010
> > 
> > Controlling trace : trace1
> > 
> > lttctl: Pausing trace
> > lttctl: Destroying trace
> > ubuntu at beagleboard:~$
> > 
> > 9. The only error I encountered was when I tried lttv -m textDump -t /tmp/trace1 for a simple trace dump in text format.
> > 
> > After a series of long lines like:
> > 
> > The input data file /tmp/trace1/net_0 does not contain a trace
> > 
> > it told me WARNING **: Trace /tmp/trace1 has no metadata tracefile
> > 
> > and CRITICAL **: cannot open trace /tmp/trace1
> > 
> > and finally: /usr/local/bin/lttv: line 15: 2152 Segmentation fault $0.real $*
> > 
> > 
> > 
> > Date: Tue, 18 May 2010 21:27:20 +0800
> > Subject: Re: [ltt-dev] Problems with LTTV GUI
> > From: jeromezhr@gmail.com
> > To: g_v_valentino at hotmail.com
> > CC: ltt-dev at lists.casi.polymtl.ca
> > 
> > 2010/5/18 Gianluca Valentino <g_v_valentino at hotmail.com>
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> >  
> > 
> > 
> > From: g_v_valentino@hotmail.com
> > To: jeromezhr at gmail.com
> > Subject: RE: [ltt-dev] Problems with LTTV GUI
> > 
> > Date: Tue, 18 May 2010 15:18:16 +0200
> > 
> > 
> > 
> > Dear Jerome,
> >  
> > Thanks for your reply. Yes they are all zero-sized..
> >  
> > Regards,
> >  
> > Gianluca
> >  
> > 
> > 
> > So I think there must be some problems in traceing.
> > Have you destroyed your trace correctly?
> > -- 
> > Regards,
> > 
> > Jerome
> >  		 	   		  
> > _________________________________________________________________
> > Your E-mail and More On-the-Go. Get Windows Live Hotmail Free.
> > https://signup.live.com/signup.aspx?id=60969
> > _______________________________________________
> > ltt-dev mailing list
> > ltt-dev at lists.casi.polymtl.ca
> > http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
> 
> 
> -- 
> Mathieu Desnoyers
> Operating System Efficiency R&D Consultant
> EfficiOS Inc.
> http://www.efficios.com
 		 	   		  
_________________________________________________________________
Hotmail: Trusted email with powerful SPAM protection.
https://signup.live.com/signup.aspx?id=60969
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[ltt-dev] Problems with LTTV GUI (Solved)

[Gianluca Valentino]

Thank you Jerome and Mathieu,

Although I patched the kernel correctly my ltt-control and lttv packages were incompatible with the 2.6.31.5 tree. Installing compatible versions did the trick.

Regards,

Gianluca

> Date: Tue, 18 May 2010 11:02:04 -0400
> From: compudj@krystal.dyndns.org
> To: g_v_valentino at hotmail.com
> CC: jeromezhr at gmail.com; ltt-dev at lists.casi.polymtl.ca
> Subject: Re: [ltt-dev] Problems with LTTV GUI
> 
> * Gianluca Valentino (g_v_valentino at hotmail.com) wrote:
> > 
> > Dear Jerome,
> > 
> > I think I have destroyed it correctly, at least that's what it says when I run it in text-mode (see no. 8 below).. I will explain each step that I have done after booting with the LTTng patched kernel below:
> > 
> > 1. Edit system-wide configuration (as explained in the guide: http://lttng.org/cgi-bin/gitweb.cgi?p=lttv.git;a=blob_plain;f=LTTngManual.html#section2)
> > mkdir /mnt/debugfs
> > cp /etc/fstab /etc/fstab.lttng.bkp
> > echo "debugfs         /mnt/debugfs    debugfs rw              0       0"  >> /etc/fstab
> > 2. Insert the specific modules (every time I boot)
> > modprobe kernel-trace
> > modprobe mm-trace
> > modprobe net-trace
> > modprobe fs-trace
> > modprobe jbd2-trace
> > modprobe ext4-trace
> > modprobe syscall-trace
> > modprobe trap-trace
> > modprobe ltt-statedump
> > 
> > I couldn't do
> > 
> > modprobe ltt-trace-control
> > modprobe ltt-marker-control
> > modprobe ltt-tracer
> > modprobe ltt-serialize
> > modprobe ltt-relay
> > 
> > However these should be in-built as they appear as .o and .c files in /lib/modules/2.6.31.5-custom/build/ltt
> 
> Please see the Compatibility list, available from the download section
> of the lttng.org website:
> 
> ltt-control 0.84 is compatible with LTTng 0.191 to 0.214, which means
> kernels 2.6.32.4 to 2.6.33.4. You are using a 2.6.31.5 tree, so I wonder
> which LTTng version you use.
> 
> Thanks,
> 
> Mathieu
> 
> > 
> > 3. I installed the ltt-control and lttv packages as explained in the guide above
> > 
> > 4. echo text > sudo tee -a /mnt/debugfs/ltt/write_event does not give me any error
> > 
> > 5. I execute sudo ltt-armall, and sudo lttv-gui
> > 
> > 6. I click on the 'traffic light' icon and I enter the root password. I click on start and then stop. LTTng Trace Control asks me if I want to open the trace in LTTV. I click yes, and it tells me "Cannot open trace: maybe you should enter in the directory to select it". Checking the sizes of the files in /tmp/trace1 (as you asked me) are all zero-sized.
> > 
> > 7. With the CLI version of lttv: I execute sudo lttctl -C -w /tmp/trace1 trace1. It gives me:
> > 
> > Linux Trace Toolkit Trace Control 0.84-07042010
> > 
> > Controlling trace : trace1
> > 
> > lttctl: Creating trace
> > lttctl: Forking lttd
> > Linux Trace Toolkit Trace Daemon 0.84-07042010
> > 
> > Reading from debugfs directory : /sys/kernel/debug/ltt/trace1
> > Writing to trace directory : /tmp/trace1
> > 
> > lttctl: Starting trace
> > ubuntu at beagleboard:~$
> > 
> > 8. Then I execute sudo lttctl -D trace1 to destroy trace. It gives me:
> > 
> > 
> > 
> > Linux Trace Toolkit Trace Control 0.84-07042010
> > 
> > Controlling trace : trace1
> > 
> > lttctl: Pausing trace
> > lttctl: Destroying trace
> > ubuntu at beagleboard:~$
> > 
> > 9. The only error I encountered was when I tried lttv -m textDump -t /tmp/trace1 for a simple trace dump in text format.
> > 
> > After a series of long lines like:
> > 
> > The input data file /tmp/trace1/net_0 does not contain a trace
> > 
> > it told me WARNING **: Trace /tmp/trace1 has no metadata tracefile
> > 
> > and CRITICAL **: cannot open trace /tmp/trace1
> > 
> > and finally: /usr/local/bin/lttv: line 15: 2152 Segmentation fault $0.real $*
> > 
> > 
> > 
> > Date: Tue, 18 May 2010 21:27:20 +0800
> > Subject: Re: [ltt-dev] Problems with LTTV GUI
> > From: jeromezhr@gmail.com
> > To: g_v_valentino at hotmail.com
> > CC: ltt-dev at lists.casi.polymtl.ca
> > 
> > 2010/5/18 Gianluca Valentino <g_v_valentino at hotmail.com>
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> >  
> > 
> > 
> > From: g_v_valentino@hotmail.com
> > To: jeromezhr at gmail.com
> > Subject: RE: [ltt-dev] Problems with LTTV GUI
> > 
> > Date: Tue, 18 May 2010 15:18:16 +0200
> > 
> > 
> > 
> > Dear Jerome,
> >  
> > Thanks for your reply. Yes they are all zero-sized..
> >  
> > Regards,
> >  
> > Gianluca
> >  
> > 
> > 
> > So I think there must be some problems in traceing.
> > Have you destroyed your trace correctly?
> > -- 
> > Regards,
> > 
> > Jerome
> >  		 	   		  
> > _________________________________________________________________
> > Your E-mail and More On-the-Go. Get Windows Live Hotmail Free.
> > https://signup.live.com/signup.aspx?id=60969
> > _______________________________________________
> > ltt-dev mailing list
> > ltt-dev at lists.casi.polymtl.ca
> > http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
> 
> 
> -- 
> Mathieu Desnoyers
> Operating System Efficiency R&D Consultant
> EfficiOS Inc.
> http://www.efficios.com
 		 	   		  
_________________________________________________________________
Hotmail: Trusted email with powerful SPAM protection.
https://signup.live.com/signup.aspx?id=60969
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