From: Jens Axboe <axboe@kernel.dk>
To: Alexander Gordeev <agordeev@redhat.com>, linux-kernel@vger.kernel.org
Cc: Kent Overstreet <kmo@daterainc.com>, Shaohua Li <shli@kernel.org>,
Nicholas Bellinger <nab@linux-iscsi.org>,
Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH RFC 0/2] percpu_ida: Take into account CPU topology when stealing tags
Date: Tue, 22 Apr 2014 08:03:13 -0600 [thread overview]
Message-ID: <535676A1.3070706@kernel.dk> (raw)
In-Reply-To: <20140422071057.GA13195@dhcp-26-169.brq.redhat.com>
On 2014-04-22 01:10, Alexander Gordeev wrote:
> On Wed, Mar 26, 2014 at 02:34:22PM +0100, Alexander Gordeev wrote:
>> But other systems (more dense?) showed increased cache-hit rate
>> up to 20%, i.e. this one:
>
> Hello Gentlemen,
>
> Any feedback on this?
Sorry for dropping the ball on this. Improvements wrt when to steal, how
much, and from whom are sorely needed in percpu_ida. I'll do a bench
with this on a system that currently falls apart with it.
--
Jens Axboe
next prev parent reply other threads:[~2014-04-22 14:03 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-26 13:34 [PATCH RFC 0/2] percpu_ida: Take into account CPU topology when stealing tags Alexander Gordeev
2014-03-26 13:34 ` [PATCH RFC 1/2] sched: Introduce topology level masks and for_each_tlm() macro Alexander Gordeev
2014-03-26 13:34 ` [PATCH RFC 2/2] percpu_ida: Use for_each_tlm() macro for CPU lookup in steal_tags() Alexander Gordeev
2014-04-22 7:10 ` [PATCH RFC 0/2] percpu_ida: Take into account CPU topology when stealing tags Alexander Gordeev
2014-04-22 14:03 ` Jens Axboe [this message]
2014-04-22 15:57 ` Jens Axboe
2014-04-23 0:53 ` Ming Lei
2014-04-23 1:25 ` Jens Axboe
2014-04-25 9:10 ` Ming Lei
2014-04-25 21:23 ` Jens Axboe
2014-04-26 0:01 ` Ming Lei
2014-04-26 2:03 ` Jens Axboe
2014-04-29 11:35 ` Ming Lei
2014-04-29 21:13 ` Jens Axboe
2014-04-30 9:40 ` Ming Lei
2014-05-01 22:47 ` Kent Overstreet
2014-05-02 2:19 ` Jens Axboe
2014-05-02 2:38 ` Kent Overstreet
2014-05-02 2:44 ` Jens Axboe
2014-05-02 5:05 ` Christoph Hellwig
2014-05-02 16:41 ` Jens Axboe
2014-05-02 16:43 ` Christoph Hellwig
2014-05-02 16:56 ` Jens Axboe
2014-04-22 11:56 ` Peter Zijlstra
2014-05-01 21:24 ` Alexander Gordeev
2014-05-01 22:04 ` Alexander Gordeev
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