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Date: Wed, 20 May 2015 09:00:57 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Vince Weaver <vincent.weaver@maine.edu>
Cc: LKML <linux-kernel@vger.kernel.org>, Stephane Eranian <eranian@google.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Jiri Olsa <jolsa@redhat.com>, Ingo Molnar <mingo@redhat.com>,
        Paul Mackerras <paulus@samba.org>
Subject: Re: perf: odd event scheduling issue
Message-ID: <20150520070057.GK3644@twins.programming.kicks-ass.net>
References: <alpine.DEB.2.11.1505192304090.4429@vincent-weaver-1.umelst.maine.edu>
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On Tue, May 19, 2015 at 11:07:09PM -0400, Vince Weaver wrote:
> Hello
> 
> so I'm running 4.1-rc4 on my Haswell machine and a lot of my perf_event 
> testsuite is failing.  There seems to be weird event scheduling issues.
> 
> I can reproduce it with plain perf; simple event groups that should work 
> fine can't be scheduled.
> 
> vince@haswell:~$ perf stat -e \{cycles,instructions\} sleep 1
> 

Hmm indeed, my ivb-ep does the same thing. Lemme go poke at that.