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From: Stanislav Fomichev <stfomichev@yandex-team.ru>
To: linux-kernel@vger.kernel.org
Cc: a.p.zijlstra@chello.nl, paulus@samba.org, mingo@redhat.com,
	acme@kernel.org, namhyung@kernel.org, artagnon@gmail.com,
	rusty@rustcorp.com.au, bp@suse.de, Jiri Olsa <jolsa@redhat.com>
Subject: Re: [PATCH v4 0/4] perf timechart io mode
Date: Tue, 24 Jun 2014 21:01:53 +0400	[thread overview]
Message-ID: <20140624170153.GC10114@stfomichev-desktop.yandex.net> (raw)
In-Reply-To: <20140624165712.GA10114@stfomichev-desktop.yandex.net>

> For some reason, in Jiri's trace we see exit from sys_read with 2,
> and then again exit from sys_read with -EAGAIN:
>             xterm 32028 [000] 43390.908909: syscalls:sys_enter_read: fd: 0x00000004, buf: 0x02076e8c, count: 0x0
>             xterm 32028 [000] 43390.908917: syscalls:sys_exit_read: 0x2
>             xterm 32028 [000] 43390.908982: syscalls:sys_exit_read: 0xfffffffffffffff5
> 
> I'm not sure how it is possible (either we lost sys_enter, or timestamp
> of seconds -EAGAIN is wrong?). I think we might just convert this error
> to a warning (we couldn't reproduce it again).
> Should I resend the whole series (preferred) or add another patch on
> top?

Or probably left it as is, because perf.data is really weird...

  reply	other threads:[~2014-06-24 17:01 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-20 10:29 [PATCH v4 0/4] perf timechart io mode Stanislav Fomichev
2014-06-20 10:29 ` [PATCH 1/4] perf timechart: fix rendering in Firefox Stanislav Fomichev
2014-06-20 10:29 ` [PATCH 2/4] perf timechart: implement IO mode Stanislav Fomichev
2014-06-24  8:34   ` Jiri Olsa
2014-06-24 17:00     ` Stanislav Fomichev
2014-06-24 18:21       ` Jiri Olsa
2014-06-20 10:29 ` [PATCH 3/4] perf timechart: conditionally update start_time on fork Stanislav Fomichev
2014-06-20 10:29 ` [PATCH 4/4] perf timechart: add more options to IO mode Stanislav Fomichev
2014-06-24  6:43 ` [PATCH v4 0/4] perf timechart io mode Namhyung Kim
2014-06-24  8:41 ` Jiri Olsa
2014-06-24  9:10   ` Stanislav Fomichev
2014-06-24 16:57     ` Stanislav Fomichev
2014-06-24 17:01       ` Stanislav Fomichev [this message]
2014-06-24 17:38       ` David Ahern
2014-06-24 18:51         ` Jiri Olsa
2014-06-24 19:03           ` David Ahern
2014-06-25 11:20             ` Stanislav Fomichev
2014-06-25 14:01               ` David Ahern
2014-06-25 14:19                 ` Stanislav Fomichev
2014-06-25 14:38                 ` Jiri Olsa
2014-07-08 16:03 Stanislav Fomichev
2014-07-09  8:23 ` Namhyung Kim
2014-07-09 11:13 ` Jiri Olsa

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