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From: Corrado Zoccolo <czoccolo@gmail.com>
To: Jeff Moyer <jmoyer@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>,
	Valdis.Kletnieks@vt.edu, Mike Galbraith <efault@gmx.de>,
	Jens Axboe <jens.axboe@oracle.com>, Ingo Molnar <mingo@elte.hu>,
	Ulrich Lukas <stellplatz-nr.13a@datenparkplatz.de>,
	linux-kernel@vger.kernel.org,
	containers@lists.linux-foundation.org, dm-devel@redhat.com,
	nauman@google.com, dpshah@google.com, lizf@cn.fujitsu.com,
	mikew@google.com, fchecconi@gmail.com, paolo.valente@unimore.it,
	ryov@valinux.co.jp, fernando@oss.ntt.co.jp,
	dhaval@linux.vnet.ibm.com, balbir@linux.vnet.ibm.com,
	righi.andrea@gmail.com, m-ikeda@ds.jp.nec.com, agk@redhat.com,
	akpm@linux-foundation.org, peterz@infradead.org,
	jmarchan@redhat.com, torvalds@linux-foundation.org,
	riel@redhat.com
Subject: Re: Do we support ioprio on SSDs with NCQ (Was: Re: IO scheduler  based IO controller V10)
Date: Mon, 5 Oct 2009 23:09:21 +0200	[thread overview]
Message-ID: <4e5e476b0910051409x33f8365flf32e8e7548d72e79@mail.gmail.com> (raw)
In-Reply-To: <x49my457uef.fsf@segfault.boston.devel.redhat.com>

On Mon, Oct 5, 2009 at 5:06 PM, Jeff Moyer <jmoyer@redhat.com> wrote:
> Corrado Zoccolo <czoccolo@gmail.com> writes:
>
>> Moreover, I suggest removing also the slice_resid part, since its
>> semantics doesn't seem consistent.
>> When computed, it is not the residency, but the remaining time slice.
>
> It stands for residual, not residency.  Make more sense?
It makes sense when computed, but not when used in rb_key computation.
Why should we postpone queues that where preempted, instead of giving
them a boost?

Thanks,
Corrado

>
> Cheers,
> Jeff
>

  reply	other threads:[~2009-10-05 21:09 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-10-02 10:55 IO scheduler based IO controller V10 Corrado Zoccolo
2009-10-02 11:04 ` Jens Axboe
2009-10-02 12:49 ` Vivek Goyal
2009-10-02 15:27   ` Corrado Zoccolo
2009-10-02 15:31     ` Vivek Goyal
2009-10-02 15:32     ` Mike Galbraith
2009-10-02 15:40       ` Vivek Goyal
2009-10-02 16:03         ` Mike Galbraith
2009-10-02 16:50         ` Valdis.Kletnieks
2009-10-02 19:58           ` Vivek Goyal
2009-10-02 22:14             ` Corrado Zoccolo
2009-10-02 22:27               ` Vivek Goyal
2009-10-03 12:43                 ` Corrado Zoccolo
2009-10-03 13:38                   ` Do we support ioprio on SSDs with NCQ (Was: Re: IO scheduler based IO controller V10) Vivek Goyal
2009-10-04  9:15                     ` Corrado Zoccolo
2009-10-04 12:11                       ` Vivek Goyal
2009-10-04 12:46                         ` Corrado Zoccolo
2009-10-04 16:20                           ` Fabio Checconi
2009-10-05 21:21                             ` Corrado Zoccolo
2009-10-05 15:06                           ` Jeff Moyer
2009-10-05 21:09                             ` Corrado Zoccolo [this message]
2009-10-06  8:41                               ` Jens Axboe
2009-10-06  9:00                                 ` Corrado Zoccolo
2009-10-06 18:53                                   ` Jens Axboe
2009-10-06 21:36                           ` Vivek Goyal

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