From: Vince Weaver <vincent.weaver@maine.edu>
To: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>,
Vince Weaver <vincent.weaver@maine.edu>,
Peter Zijlstra <peterz@infradead.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Ingo Molnar <mingo@kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/2] Notifications for perf sideband events
Date: Thu, 13 Jul 2017 11:35:08 -0400 (EDT) [thread overview]
Message-ID: <alpine.DEB.2.20.1707131132350.23692@macbook-air> (raw)
In-Reply-To: <20170713142002.udgtzxdv6n7y3w3z@naverao1-tp.localdomain>
On Thu, 13 Jul 2017, Naveen N. Rao wrote:
> > could you please check on this? thanks
> >
> > Naveen,
> > have you run Vince's test suite on this?
> > http://github.com/deater/perf_event_tests.git
>
> I just tried this and I see quite a few failures even without these
> patches.
>
> The behavior is similar with/without these patches and all the ioctl
> tests pass, but I see some failures with the overflow tests. I'll look
> into those tests in detail tomorrow. I may be missing something.
the signal/overflow interface has always been a troublesome one :(
It's part of why I haven't had much to say about the whole kernel
addresses leaking into samples mess.
I had noticed some of the related overflow tests have been failing
recently (both in perf_event_tests and in PAPI), but I haven't had
a chance to see if it was an actual regression or just due to the way the
tests are designed. I'll see if I can figure out what's going on.
Vince
prev parent reply other threads:[~2017-07-13 15:35 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-19 14:31 Naveen N. Rao
2017-06-19 14:31 ` [PATCH 1/2] kernel/events: Add option to notify through signals on wakeup Naveen N. Rao
2017-07-12 11:46 ` Peter Zijlstra
2017-07-13 14:37 ` Naveen N. Rao
2017-06-19 14:31 ` [PATCH 2/2] kernel/events: Add option to enable counting sideband events in wakeup_events Naveen N. Rao
2017-07-12 10:48 ` Jiri Olsa
2017-07-13 14:34 ` Naveen N. Rao
2017-07-12 11:48 ` Peter Zijlstra
2017-07-13 14:55 ` Naveen N. Rao
2017-06-27 9:04 ` [PATCH 0/2] Notifications for perf sideband events Naveen N. Rao
2017-07-12 10:48 ` Jiri Olsa
2017-07-13 14:20 ` Naveen N. Rao
2017-07-13 15:35 ` Vince Weaver [this message]
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