Hi,
I am a Perfmon2 newbie and I am studying the Perfmon2 userguide from your
website. Everything goes well with the examples, till I get to section 7.1
about Basic Monitoring of Multiple Processes/Threads. When I run the pfmon
command to obtain the INSTRUCTIONS_RETIRED event for the gcc application, I get
"task exited with error code 0". And when I try to trace what is going on by
using the --follow-all option, I get "out-of-order creation, stopped" for each
thread (so, created tasks: 0). I include the command lines and the
corresponding outputs I got, at the bottom of the mail.
I am using Ubuntu Linux 2.6.32.10 OS patched with the perfmon2 tool on an Intel
Core 2 Duo PC.
Would you please give me some insight about what could be wrong and how to fix
this. I would appreciate it if you could help me.
Thanks a lot,
Ulises
$ pfmon --verbose --us-counter-format --no-cmd-output -e instructions_retired
-- gcc hello.c -o hello -O2 -static
measuring at user privilege level ONLY
1 event set(s) defined
long sampling periods(val/mask/seed): 0/0x0/0
short sampling periods(val/mask/seed): 0/0x0/0
unavailable_pmcs=0xfffcfffc
unavailable_pmds=0xfff8fffc
[FIXED_CTRL(pmc16)=0xa pmi0=1 en0=0x2 pmi1=1 en1=0x0 pmi2=1 en2=0x0]
INSTRUCTIONS_RETIRED
[FIXED_CTR0(pmd16)]
pmd setup for event set0:
[pmd16 set=0 ival=0x0 long_rate=0x0 short_rate=0x0 mask=0x0 seed=0 randomize=n]
exec-pattern=*
[15634] started task: gcc hello.c -o hello -O2 -static
follow_exec=n follow_vfork=n follow_fork=n follow_pthread=n
[15634] 32-bit binary
[15634] monitoring /usr/bin/gcc-4.4...
[15634] results are on terminal
[15634] activating monitoring
measurements started at Thu May 5 19:12:06 2011
[15634] task exited with error code 0
1,708,975 INSTRUCTIONS_RETIRED
[15634] detached
sdesc chain to process:
created tasks : 0
maximum tasks : 1
maximum active tasks : 1
measurements completed at Thu May 5 19:12:06 2011
$ pfmon --verbose --follow-all --us-counter-format --no-cmd-output -e
instructions_retired -- gcc hello.c -o hello -O2 -static
measuring at user privilege level ONLY
1 event set(s) defined
long sampling periods(val/mask/seed): 0/0x0/0
short sampling periods(val/mask/seed): 0/0x0/0
unavailable_pmcs=0xfffcfffc
unavailable_pmds=0xfff8fffc
[FIXED_CTRL(pmc16)=0xa pmi0=1 en0=0x2 pmi1=1 en1=0x0 pmi2=1 en2=0x0]
INSTRUCTIONS_RETIRED
[FIXED_CTR0(pmd16)]
pmd setup for event set0:
[pmd16 set=0 ival=0x0 long_rate=0x0 short_rate=0x0 mask=0x0 seed=0 randomize=n]
exec-pattern=*
[15566] started task: gcc hello.c -o hello -O2 -static
follow_exec=y follow_vfork=y follow_fork=y follow_pthread=y
[15566] 32-bit binary
[15566] monitoring /usr/bin/gcc-4.4...
[15566] results are on terminal
[15566] activating monitoring
measurements started at Thu May 5 19:10:37 2011
[15567] out-of-order creation, stopped
[15566] vforked [15567]
[15567] monitoring /usr/bin/gcc-4.4...
[15567] results are on terminal
[15567] activating monitoring
[15567] resuming
[15567] 32-bit binary
[15567] exec /usr/lib/gcc/i486-linux-gnu/4.4/cc1...
[15567] monitoring /usr/lib/gcc/i486-linux-gnu/4.4/cc1...
[15567] task exited with error code 0
52,376,899 INSTRUCTIONS_RETIRED
/usr/lib/gcc/i486-linux-gnu/4.4/cc1 (15567,15567,15566)
[15567] detached
[15568] out-of-order creation, stopped
[15566] vforked [15568]
[15568] monitoring /usr/bin/gcc-4.4...
[15568] results are on terminal
[15568] activating monitoring
[15568] resuming
[15568] 32-bit binary
[15568] exec /usr/bin/as...
[15568] monitoring /usr/bin/as...
[15568] task exited with error code 0
2,153,624 INSTRUCTIONS_RETIRED /usr/bin/as (15568,15568,15566)
[15568] detached
[15569] out-of-order creation, stopped
[15566] vforked [15569]
[15569] monitoring /usr/bin/gcc-4.4...
[15569] results are on terminal
[15569] activating monitoring
[15569] resuming
[15569] 32-bit binary
[15569] exec /usr/lib/gcc/i486-linux-gnu/4.4/collect2...
[15569] monitoring /usr/lib/gcc/i486-linux-gnu/4.4/collect2...
[15570] out-of-order creation, stopped
[15569] vforked [15570]
[15570] monitoring /usr/lib/gcc/i486-linux-gnu/4.4/collect2...
[15570] results are on terminal
[15570] activating monitoring
[15570] resuming
[15570] 32-bit binary
[15570] exec /usr/bin/ld...
[15570] monitoring /usr/bin/ld...
[15570] task exited with error code 0
106,632,326 INSTRUCTIONS_RETIRED /usr/bin/ld (15570,15570,15569)
[15570] detached
[15569] task exited with error code 0
958,373 INSTRUCTIONS_RETIRED
/usr/lib/gcc/i486-linux-gnu/4.4/collect2 (15569,15569,15566)
[15569] detached
[15566] task exited with error code 0
1,708,975 INSTRUCTIONS_RETIRED /usr/bin/gcc-4.4
(15566,15566,15565)
[15566] detached
sdesc chain to process:
created tasks : 0
maximum tasks : 3
maximum active tasks : 3
measurements completed at Thu May 5 19:10:37 2011
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