linux-kernel - Re: perf: odd event scheduling issue

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 20 May 2015 09:00:57 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Vince Weaver <vincent.weaver@...ne.edu>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Stephane Eranian <eranian@...gle.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Jiri Olsa <jolsa@...hat.com>, Ingo Molnar <mingo@...hat.com>,
	Paul Mackerras <paulus@...ba.org>
Subject: Re: perf: odd event scheduling issue

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@...well:~$ perf stat -e \{cycles,instructions\} sleep 1
> 

Hmm indeed, my ivb-ep does the same thing. Lemme go poke at that.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/