From: Peter Zijlstra <peterz@infradead.org>
To: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: kernel test robot <ying.huang@intel.com>,
Konstantin Khlebnikov <khlebnikov@yandex-team.ru>,
LKP <lkp@01.org>, LKML <linux-kernel@vger.kernel.org>,
Trond Myklebust <trond.myklebust@primarydata.com>,
Anna Schumaker <anna.schumaker@netapp.com>,
linux-nfs@vger.kernel.org
Subject: Re: [lkp] [sched/preempt] 103637a5b94: 12.4% fsmark.app_overhead, -1.4% fsmark.files_per_sec
Date: Sun, 26 Jul 2015 11:01:01 +0200 [thread overview]
Message-ID: <20150726090101.GN19282@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <CALYGNiNtLYwts6mu5-yTZTJ_7-FDym=bbtzUv-pmX5yhHWfRuA@mail.gmail.com>
On Sat, Jul 25, 2015 at 07:32:03PM +0300, Konstantin Khlebnikov wrote:
> I guess that's because of cond_resched_lock() usage in nfs_scan_commit_list().
> My patch fixes cond_resched_lock() which never worked since v3.13.
Yeah, I wasn't surprised to see preemptions go up with this patch, not
total throughput suffer a bit due to that.
prev parent reply other threads:[~2015-07-26 9:01 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-25 6:09 [lkp] [sched/preempt] 103637a5b94: 12.4% fsmark.app_overhead, -1.4% fsmark.files_per_sec kernel test robot
2015-07-25 16:32 ` Konstantin Khlebnikov
2015-07-26 9:01 ` Peter Zijlstra [this message]
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