* perf record: mmap fails when specifying process/thread
@ 2011-02-16 15:43 David Ahern
2011-02-16 23:53 ` Arnaldo Carvalho de Melo
0 siblings, 1 reply; 3+ messages in thread
From: David Ahern @ 2011-02-16 15:43 UTC (permalink / raw)
To: linux-perf-users
Latest perf-core (pulled 5 minutes ago):
# ps -C sshd
PID TTY TIME CMD
961 ? 00:00:00 sshd
1042 ? 00:00:00 sshd
# /tmp/build-perf/perf record -v -fo/tmp/perf.data -p 1042
Warning: ... trying to fall back to cpu-clock-ticks
Fatal: failed to mmap with 22 (Invalid argument)
It works fine with -a argument and when a command is given, but fails
with the -p or -t argument.
David
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: perf record: mmap fails when specifying process/thread
2011-02-16 15:43 perf record: mmap fails when specifying process/thread David Ahern
@ 2011-02-16 23:53 ` Arnaldo Carvalho de Melo
2011-02-17 0:01 ` David Ahern
0 siblings, 1 reply; 3+ messages in thread
From: Arnaldo Carvalho de Melo @ 2011-02-16 23:53 UTC (permalink / raw)
To: David Ahern; +Cc: linux-perf-users
Em Wed, Feb 16, 2011 at 08:43:45AM -0700, David Ahern escreveu:
> Latest perf-core (pulled 5 minutes ago):
>
> # ps -C sshd
> PID TTY TIME CMD
> 961 ? 00:00:00 sshd
> 1042 ? 00:00:00 sshd
>
> # /tmp/build-perf/perf record -v -fo/tmp/perf.data -p 1042
> Warning: ... trying to fall back to cpu-clock-ticks
>
> Fatal: failed to mmap with 22 (Invalid argument)
>
>
> It works fine with -a argument and when a command is given, but fails
> with the -p or -t argument.
In my radar, perf/urgent works tho, kinda made me lazy due to compound with
unrelated company work :-\ Need to fix that ASAP.
- Arnaldo
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: perf record: mmap fails when specifying process/thread
2011-02-16 23:53 ` Arnaldo Carvalho de Melo
@ 2011-02-17 0:01 ` David Ahern
0 siblings, 0 replies; 3+ messages in thread
From: David Ahern @ 2011-02-17 0:01 UTC (permalink / raw)
To: Arnaldo Carvalho de Melo; +Cc: linux-perf-users
On 02/16/11 16:53, Arnaldo Carvalho de Melo wrote:
> Em Wed, Feb 16, 2011 at 08:43:45AM -0700, David Ahern escreveu:
>> Latest perf-core (pulled 5 minutes ago):
>>
>> # ps -C sshd
>> PID TTY TIME CMD
>> 961 ? 00:00:00 sshd
>> 1042 ? 00:00:00 sshd
>>
>> # /tmp/build-perf/perf record -v -fo/tmp/perf.data -p 1042
>> Warning: ... trying to fall back to cpu-clock-ticks
>>
>> Fatal: failed to mmap with 22 (Invalid argument)
>>
>>
>> It works fine with -a argument and when a command is given, but fails
>> with the -p or -t argument.
>
> In my radar, perf/urgent works tho, kinda made me lazy due to compound with
> unrelated company work :-\ Need to fix that ASAP.
>
> - Arnaldo
Works in latest kernel git too. I looked at a diff of the tools between
the kernel tree and perf-core -- too many changes for me to wade through
right now.
BTW, it fails running the Fedora 14 kernel too, so my guess is a
userspace change.
David
^ permalink raw reply [flat|nested] 3+ messages in thread
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2011-02-16 15:43 perf record: mmap fails when specifying process/thread David Ahern
2011-02-16 23:53 ` Arnaldo Carvalho de Melo
2011-02-17 0:01 ` David Ahern
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