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Message-ID: <1466581044.3188.34.camel@gmail.com>
Subject: Re: [patch V2 00/20] timer: Refactor the timer wheel
From: Mike Galbraith <umgwanakikbuti@gmail.com>
To: Thomas Gleixner <tglx@linutronix.de>, LKML <linux-kernel@vger.kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>, Peter Zijlstra <peterz@infradead.org>,
        "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
        Eric Dumazet <edumazet@google.com>,
        Frederic Weisbecker <fweisbec@gmail.com>, Chris Mason <clm@fb.com>,
        Arjan van de Ven <arjan@infradead.org>, rt@linutronix.de,
        Rik van Riel <riel@redhat.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        George Spelvin <linux@sciencehorizons.net>,
        Len Brown <lenb@kernel.org>
Date: Wed, 22 Jun 2016 09:37:24 +0200
In-Reply-To: <20160617121134.417319325@linutronix.de>
References: <20160617121134.417319325@linutronix.de>
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On Fri, 2016-06-17 at 13:26 +0000, Thomas Gleixner wrote:
> This is the second version of the timer wheel rework series. The first series
> can be found here:
> 
>    http://lkml.kernel.org/r/20160613070440.950649741@linutronix.de
> 
> The series is also available in git:
> 
>    git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.timers

FWIW, testing with ltp, I noticed a new failure in logs.  It turns out
to be intermittent, but the testcase mostly fails.

rtbox:~ # /usr/local/ltp/conformance/interfaces/sigtimedwait/sigtimedwait_1-1.run-test
Test FAILED: sigtimedwait() did not return in the required time
time_elapsed: 1.197057
...come on, you can do it...
rtbox:~ # /usr/local/ltp/conformance/interfaces/sigtimedwait/sigtimedwait_1-1.run-test
Test PASSED

#define ERRORMARGIN 0.1
...
        if ((time_elapsed > SIGTIMEDWAITSEC + ERRORMARGIN)
            || (time_elapsed < SIGTIMEDWAITSEC - ERRORMARGIN)) {
                printf("Test FAILED: sigtimedwait() did not return in "
                        "the required time\n");
                printf("time_elapsed: %lf\n", time_elapsed);
                return PTS_FAIL;
        }

Looks hohum to me, but gripe did arrive with patch set, so you get a note.

	-Mike