[ltt-dev] Incomplete Traceset statistics on 2.6.27.10?

[Dany R Madden]

Hello,

I am playing with lttng 0.72 (patch-2.6.27.10-lttng-0.72) on 2.6.27.10 
kernel. I'm using ltt-control-0.64-14012009 and lttv-0.12.7-20012009. I 
followed this instruction: 
http://ltt.polymtl.ca/svn/trunk/lttv/LTTngManual.html#section1. (I did do 
ltt-armall before starting the trace)

I am expecting to see more information in the Traceset statistics, but 
they seem to be blank. What should a working trace data look like? (I 
can't imagine that this is it.)

This is the output after doing lttv textDump.

...
kernel.syscall_entry: 1727.121073743 (/tmp/trace1/kernel_0), 0, 0, 
/bin/dmesg, , 0, 0x0, SYSCALL { ip = 0xffffe430, syscall_id = 4 
[sys_write+0x0/0x87] }
fs.open: 1727.121083083 (/tmp/trace1/fs_6), 0, 0, /usr/bin/lttctl, , 0, 
0x0, SYSCALL { fd = 4, filename = 
"/sys/kernel/debug/ltt/control/trace1/enabled" }
kernel.syscall_exit: 1727.121086156 (/tmp/trace1/kernel_6), 0, 0, 
/usr/bin/lttctl, , 0, 0x0, SYSCALL { ret = 4 }
fs.write: 1727.121087465 (/tmp/trace1/fs_0), 0, 0, /bin/dmesg, , 0, 0x0, 
SYSCALL { fd = 3, count = 64 }
kernel.syscall_exit: 1727.121090016 (/tmp/trace1/kernel_0), 0, 0, 
/bin/dmesg, , 0, 0x0, SYSCALL { ret = 64 }
kernel.syscall_entry: 1727.121092890 (/tmp/trace1/kernel_6), 0, 0, 
/usr/bin/lttctl, , 0, 0x0, SYSCALL { ip = 0xffffe430, syscall_id = 4 
[sys_write+0x0/0x87] }
kernel.syscall_entry: 1727.121094818 (/tmp/trace1/kernel_0), 0, 0, 
/bin/dmesg, , 0, 0x0, SYSCALL { ip = 0xffffe430, syscall_id = 142 
[sys_select+0x0/0x148] }
fs.select: 1727.121098067 (/tmp/trace1/fs_0), 0, 0, /bin/dmesg, , 0, 0x0, 
SYSCALL { fd = 3, timeout = -1 }
End trace set

Traceset statistics:

statistics summed: 1
mode_types:
  MODE_UNKNOWN:
    submodes:
      UNKNOWN:
        event_types:
        events count: 0
    events:
    mode_types:
      event_types:
      events count: 0
event_types:
events count: 0
  processes:
    unknown process:
      cpu:
        0:
          functions:
            0x0:
              mode_types:
                MODE_UNKNOWN:
                  submodes:
                    UNKNOWN:
                      event_types:
                      events count: 0
                  events:
                  mode_types:
                    event_types:
                    events count: 0
              event_types:
              events count: 0
          mode_types:
            MODE_UNKNOWN:
              submodes:
                UNKNOWN:
                  event_types:
                  events count: 0
              events:
              mode_types:
                event_types:
                events count: 0
          event_types:
          events count: 0

...

I originally tried lttng on sles 11 rc1 and rc2, but had this result. I am 
surprised to see the same thing happening with the mainline kernel. So, 
whatever it is that I am doing wrong, I seems to be repeating it 
successfully each time.  What am I doing wrong?

Thanks in advance for the help.
-------------------------------------------------
Dany Madden
IBM Linux Technology Center, MCP Team
15400 SW Koll Pkwy, Beaverton, OR 97006
(503) 578-3086 (TL: 775-3086)
danymadden at us.ibm.com
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