[ltt-dev] ltt trace files are empty

[compudj@krystal.dyndns.org (Mathieu Desnoyers)]

* Dhirender Baliyan (dhir157 at gmail.com) wrote:
[...]
> # lttctl -D trace1
> 
> 
> Linux Trace Toolkit Trace Control 0.64-14012009
> 
> Controlling trace : trace1
> 
> lttctl: Pausing trace
> lttctl: Destroying trace
> #ltt-disarmall
> # lttv -m textDump -t /tmp/trace1
> The input data file /var/tmp/trace1/metadata_0 does not contain a trace
> The input data file /var/tmp/trace1/block_0 does not contain a trace
> The input data file /var/tmp/trace1/fd_state_0 does not contain a trace
> The input data file /var/tmp/trace1/fs_0 does not contain a trace
> The input data file /var/tmp/trace1/global_state_0 does not contain a trace
> The input data file /var/tmp/trace1/input_0 does not contain a trace
> The input data file /var/tmp/trace1/ipc_0 does not contain a trace
> The input data file /var/tmp/trace1/irq_state_0 does not contain a trace
> **
> ERROR:tracefile.c:1355:map_block: assertion failed: (block_num <
> tf->num_blocks)
> /bin/lttv: line 15:   101 Aborted                 $0.real $*
> 
> # ls -l /tmp/trace1/
> -rwxr-xr-x    1 root     root            0 Jan  1 00:04 block_0
> -rwxr-xr-x    1 root     root            0 Jan  1 00:04 fd_state_0
> -rwxr-xr-x    1 root     root            0 Jan  1 00:04 fs_0
> -rwxr-xr-x    1 root     root            0 Jan  1 00:04 global_state_0
> -rwxr-xr-x    1 root     root            0 Jan  1 00:04 input_0
> -rwxr-xr-x    1 root     root            0 Jan  1 00:04 ipc_0
> -rwxr-xr-x    1 root     root            0 Jan  1 00:04 irq_state_0
> -rwxr-xr-x    1 root     root       634880 Jan  1 00:04 kernel_0
> -rwxr-xr-x    1 root     root            0 Jan  1 00:04 metadata_0
> -rwxr-xr-x    1 root     root            0 Jan  1 00:04 mm_0
> -rwxr-xr-x    1 root     root            0 Jan  1 00:04 module_state_0
> -rwxr-xr-x    1 root     root            0 Jan  1 00:04 net_0
> -rwxr-xr-x    1 root     root            0 Jan  1 00:04 netif_state_0
> -rwxr-xr-x    1 root     root            0 Jan  1 00:04 rcu_0
> -rwxr-xr-x    1 root     root            0 Jan  1 00:04 softirq_state_0
> -rwxr-xr-x    1 root     root            0 Jan  1 00:04 task_state_0
> -rwxr-xr-x    1 root     root            0 Jan  1 00:04 userspace_0
> -rwxr-xr-x    1 root     root            0 Jan  1 00:04 vm_state_0

Please make sure you have enough free space on your device. It might be
causing your problems. Also knowing which LTTng version you use might
help (you gave only the kernel version, not LTTng version). It might be
a bug specific to this old LTTng version (which matched you 2.6.28.4
kernel). Upgrading to a newer LTTng might help. Please see the
compability list in the http://lttng.org download section, where you can
find information about changelogs and cross-compatibility between tool
versions.

Thanks,

Mathieu

> 
> i am attching /tmp/trace1 and /mnt/debugfs
> 
> still am not getting traces through lttv
> 
> Regards
> Dhirender
> 
> 
> On Wed, Apr 13, 2011 at 3:53 PM, Srikanth Krishnakar
> <skrishnakar at gmail.com>wrote:
> 
> >  Dhirendar,
> >
> > You just connected the markers, where are the further steps ?
> >
> > I mean :
> >
> > 1. ltt-armall
> > 2. lttctl -C -w /tmp/trace1 trace1
> >
> > <Run your tests here, If you have any >
> >
> > 3. lttctl -D trace1
> > 4. ltt-disarmall
> > 5. lttv -m textDump -t /tmp/trace1
> >
> >
> > -skrishnakar
> >
> >
> >
> > On 04/13/2011 02:38 PM, Dhirender Baliyan wrote:
> >
> >
> >
> >
> > Hi
> >
> >  I am using
> > 1) lttng 2.6.28.4
> > 2)lttctl 0.64
> > 3) lttv-0.12.10
> >
> >  cross compiled it for mips
> >
> >  my config option are CONFIG_LTT=y
> > CONFIG_LTT_FILTER=y
> > CONFIG_LTT_TRACEPROBES=y
> > # CONFIG_HAVE_LTT_DUMP_TABLES is not set
> > CONFIG_LTT_RELAY_ALLOC=y
> > CONFIG_LTT_RELAY=y
> > # CONFIG_LTT_RELAY_LOCKED is not set
> > # CONFIG_LTT_RELAY_CHECK_RANDOM_ACCESS is not set
> > CONFIG_LTT_SERIALIZE=y
> > CONFIG_LTT_MARKER_CONTROL=y
> > CONFIG_LTT_TRACER=y
> > CONFIG_LTT_ALIGNMENT=y
> > CONFIG_LTT_DEBUG_EVENT_SIZE=y
> > CONFIG_LTT_USERSPACE_EVENT=y
> > CONFIG_LTT_VMCORE=y
> > CONFIG_LTT_NETLINK_CONTROL=y
> > CONFIG_LTT_TRACE_CONTROL=y
> > CONFIG_LTT_STATEDUMP=y
> >
> >  now
> > ltt-armall
> > lttctl os running fine
> >
> >  but when i do
> > lttv -m textDump -t /tmp/trace1
> >  The input data file /var/tmp/trace1/metadata_0 does not contain a trace
> > The input data file /var/tmp/trace1/block_0 does not contain a trace
> > The input data file /var/tmp/trace1/fd_state_0 does not contain a trace
> > The input data file /var/tmp/trace1/fs_0 does not contain a trace
> > The input data file /var/tmp/trace1/global_state_0 does not contain a trace
> > The input data file /var/tmp/trace1/input_0 does not contain a trace
> > The input data file /var/tmp/trace1/ipc_0 does not contain a trace
> > The input data file /var/tmp/trace1/irq_state_0 does not contain a trace
> > **
> > ERROR:tracefile.c:1355:map_block: assertion failed: (block_num <
> > tf->num_blocks)
> > /bin/lttv: line 15:   100 Aborted                 $0.real $*
> >
> >  this output is coming
> > so i checked /tmp/trace1 file , then i found the files are having 0 size
> >  -rwxr-xr-x    1 root     root            0 Jan  1 00:07 block_0
> > -rwxr-xr-x    1 root     root            0 Jan  1 00:07 fd_state_0
> > -rwxr-xr-x    1 root     root            0 Jan  1 00:07 fs_0
> > -rwxr-xr-x    1 root     root            0 Jan  1 00:07 global_state_0
> > -rwxr-xr-x    1 root     root            0 Jan  1 00:07 input_0
> > -rwxr-xr-x    1 root     root            0 Jan  1 00:07 ipc_0
> > -rwxr-xr-x    1 root     root            0 Jan  1 00:07 irq_state_0
> > -rwxr-xr-x    1 root     root            0 Jan  1 00:07 kernel_0
> > -rwxr-xr-x    1 root     root            0 Jan  1 00:07 metadata_0
> > -rwxr-xr-x    1 root     root            0 Jan  1 00:07 mm_0
> > -rwxr-xr-x    1 root     root            0 Jan  1 00:07 module_state_0
> > -rwxr-xr-x    1 root     root            0 Jan  1 00:07 net_0
> > -rwxr-xr-x    1 root     root            0 Jan  1 00:07 netif_state_0
> > -rwxr-xr-x    1 root     root            0 Jan  1 00:07 rcu_0
> > -rwxr-xr-x    1 root     root            0 Jan  1 00:07 softirq_state_0
> > -rwxr-xr-x    1 root     root            0 Jan  1 00:07 task_state_0
> > -rwxr-xr-x    1 root     root            0 Jan  1 00:07 userspace_0
> > -rwxr-xr-x    1 root     root            0 Jan  1 00:07 vm_state_0
> >
> >  I am not getting why this is coming.
> > Please help
> > Thanks in advance
> >
> >  Regards
> > Dhiren
> >
> >
> > _______________________________________________
> > ltt-dev mailing listltt-dev at lists.casi.polymtl.cahttp://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
> >
> >
> >
> > _______________________________________________
> > ltt-dev mailing list
> > ltt-dev at lists.casi.polymtl.ca
> > http://lists.casi.polymtl.ca/cgi-bin/mailman/listinfo/ltt-dev
> >
> >



> _______________________________________________
> 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