[ltt-dev] ltt trace files are empty

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

* Dhirender Baliyan (dhir157 at gmail.com) wrote:
> Hi Mathieu,
> 
> I am using
> 1) kernel 2.6.28.9( we have applied patches 2.6.28.4 to 2.6.28.9)
> 2)lttng -- patch-2.6.28.4-lttng-0.88
> 2)lttctl 0.64
> 3) lttv-0.12.10
> 
> actually in our 2.6.28.9 kernel there is no support for kprobes for MIPS.
> hence in make menuconfig kprobe option is not coming under lttng.
> 
> would no kprobe support cause some problem ?

No, I don't think it would. But we are talking about very very old LTTng
versions here. It might not hurt to try a newer one. ;)

Good luck,

Mathieu

> 
> 
> 
> On Wed, Apr 13, 2011 at 8:10 PM, Mathieu Desnoyers <
> compudj at krystal.dyndns.org> wrote:
> 
> > * 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
> > > >
> > > >
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> > > >
> > > >
> > > >
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> >
> >
> >
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> >
> > --
> > Mathieu Desnoyers
> > Operating System Efficiency R&D Consultant
> > EfficiOS Inc.
> > http://www.efficios.com
> >

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