From: Jeff Moyer <jmoyer@redhat.com>
To: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Cc: Jens Axboe <jens.axboe@oracle.com>,
Vivek Goyal <vgoyal@redhat.com>,
Corrado Zoccolo <czoccolo@gmail.com>,
linux kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] CFQ: Don't store left slice when slice used up or for a idle workload
Date: Tue, 13 Jul 2010 09:10:37 -0400 [thread overview]
Message-ID: <x49r5j7plwy.fsf@segfault.boston.devel.redhat.com> (raw)
In-Reply-To: <4C3BCDA1.5040007@cn.fujitsu.com> (Gui Jianfeng's message of "Tue, 13 Jul 2010 10:21:21 +0800")
Gui Jianfeng <guijianfeng@cn.fujitsu.com> writes:
> It doesn't make sence to store left time slice for an idle workload
> or for the cfqq that uses up its slice.
Did you actually observe any problems? As I understand it, if you
overrun your slice you get a negative offset, so I think we want to keep
that.
Cheers,
Jeff
next prev parent reply other threads:[~2010-07-13 13:10 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-13 2:21 Gui Jianfeng
2010-07-13 13:10 ` Jeff Moyer [this message]
2010-07-14 0:40 ` Gui Jianfeng
2010-07-14 13:23 ` Jeff Moyer
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