From: Dave Jones <davej@redhat.com>
To: Vince Weaver <vincent.weaver@maine.edu>
Cc: Tommi Rantala <tt.rantala@gmail.com>, trinity@vger.kernel.org
Subject: Re: [patch] perf_event_open enable sysfs exported events
Date: Wed, 19 Jun 2013 11:27:22 -0400 [thread overview]
Message-ID: <20130619152722.GA22109@redhat.com> (raw)
In-Reply-To: <alpine.DEB.2.10.1306131555210.24106@vincent-weaver-1.um.maine.edu>
On Thu, Jun 13, 2013 at 03:58:37PM -0400, Vince Weaver wrote:
> On Thu, 13 Jun 2013, Tommi Rantala wrote:
>
> > Unable to opendir /sys/bus/event_source/devices : Resource temporarily
> > unavailable
>
> Though in the case where /sys/bus/event_source/devices isn't available
> trinity will try opening it again each time it tries to do a
> PERF_TYPE_READ_FROM_SYSFS type (1 time in 7). Not sure if it's
> worth rate-limiting that.
I'm puzzled why I'm seeing opendir() fail with -ENOMEM when there's gigabytes
of free memory available. Likewise, getting -EAGAIN seems.. weird.
Is there actually a problem there ? Or can we just remove the output from
the failure paths, and fail silently ?
init_pmus might be simpler if it was converted to use nftw() too.
Dave
next prev parent reply other threads:[~2013-06-19 15:27 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-11 4:33 [patch] perf_event_open enable sysfs exported events Vince Weaver
2013-06-11 21:05 ` Dave Jones
2013-06-11 21:24 ` Vince Weaver
2013-06-11 21:32 ` Dave Jones
2013-06-11 22:21 ` Vince Weaver
2013-06-11 22:25 ` Dave Jones
2013-06-13 19:38 ` Tommi Rantala
2013-06-13 19:58 ` Vince Weaver
2013-06-13 20:53 ` Dave Jones
2013-06-13 21:07 ` Vince Weaver
2013-06-13 21:05 ` Dave Jones
2013-06-19 15:27 ` Dave Jones [this message]
2013-06-19 16:34 ` Vince Weaver
2013-06-19 16:38 ` Dave Jones
2013-06-19 19:29 ` Vince Weaver
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