* Trouble parsing trace events
@ 2011-11-23 6:51 Arun Sharma
2011-11-23 7:03 ` Andrew Vagin
0 siblings, 1 reply; 3+ messages in thread
From: Arun Sharma @ 2011-11-23 6:51 UTC (permalink / raw)
To: linux-perf-users; +Cc: David Ahern, Andrew Vagin
I'm using a 3.2-rc1 based kernel and perf userspace built from
tip/auto-latest (commit id e471db8) + Andrew Vagin's sleep profiling
patches.
# perf record -agT -e sched:sched_switch -F 100 -- sleep 3
[ perf record: Woken up 9 times to write data ]
[ perf record: Captured and wrote 4.044 MB perf.data (~176664 samples) ]
# perf script
Warning: Error: expected type 5 but read 4
Warning: Error: expected type 4 but read 0
Fatal: bad op token {
Is there a known incompatibility between kernel and userspace that could
explain this?
I don't see this problem with other trace points (eg: kmem:kmalloc).
-Arun
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Trouble parsing trace events
2011-11-23 6:51 Trouble parsing trace events Arun Sharma
@ 2011-11-23 7:03 ` Andrew Vagin
2011-11-23 7:14 ` Arun Sharma
0 siblings, 1 reply; 3+ messages in thread
From: Andrew Vagin @ 2011-11-23 7:03 UTC (permalink / raw)
To: Arun Sharma; +Cc: linux-perf-users, David Ahern
Hello Arun,
This bug was fixed already, but the commit isn't in Linus's tree yet.
http://git.kernel.org/?p=linux/kernel/git/tip/tip.git;a=commit;h=49908a1b25d448d68fd26faca260e1850201575f
On 11/23/2011 10:51 AM, Arun Sharma wrote:
>
> I'm using a 3.2-rc1 based kernel and perf userspace built from
> tip/auto-latest (commit id e471db8) + Andrew Vagin's sleep profiling
> patches.
>
> # perf record -agT -e sched:sched_switch -F 100 -- sleep 3
> [ perf record: Woken up 9 times to write data ]
> [ perf record: Captured and wrote 4.044 MB perf.data (~176664 samples) ]
>
> # perf script
> Warning: Error: expected type 5 but read 4
> Warning: Error: expected type 4 but read 0
> Fatal: bad op token {
>
> Is there a known incompatibility between kernel and userspace that
> could explain this?
>
> I don't see this problem with other trace points (eg: kmem:kmalloc).
>
> -Arun
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Trouble parsing trace events
2011-11-23 7:03 ` Andrew Vagin
@ 2011-11-23 7:14 ` Arun Sharma
0 siblings, 0 replies; 3+ messages in thread
From: Arun Sharma @ 2011-11-23 7:14 UTC (permalink / raw)
To: avagin; +Cc: linux-perf-users, David Ahern
On 11/22/11 11:03 PM, Andrew Vagin wrote:
> Hello Arun,
>
> This bug was fixed already, but the commit isn't in Linus's tree yet.
> http://git.kernel.org/?p=linux/kernel/git/tip/tip.git;a=commit;h=49908a1b25d448d68fd26faca260e1850201575f
Thanks. I was confused about where various git trees live these days and
was fetching from
git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git
which doesn't have the commit you're referring to.
-Arun
^ permalink raw reply [flat|nested] 3+ messages in thread
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