From: Jens Axboe <axboe@suse.de>
To: Con Kolivas <ckolivas@yahoo.com.au>
Cc: linux kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: [BENCHMARK] 2.5.60-cfq with contest
Date: Tue, 11 Feb 2003 14:37:09 +0100 [thread overview]
Message-ID: <20030211133709.GO930@suse.de> (raw)
In-Reply-To: <20030211105944.GB930@suse.de>
On Tue, Feb 11 2003, Jens Axboe wrote:
> > Write based loads hurt. No breakages, but needs tuning.
>
> That's not even as bad as I had feared. I'll try to do some tuning with
> contest locally.
Here are my results, for 2.5.60 vanilla, 2.5.60 + cfq with default
quantum of 16 (what you tested, too), and 2.5.60 + cfq without quantum
setting. The latter should be the fairest, only moves one request from
the pending queues.
no_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.60 2 31 177.4 0 0.0 1.00
2.5.60-cfq0 2 31 174.2 0 0.0 1.00
2.5.60-cfq16 2 31 177.4 0 0.0 1.00
cacherun:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.60 2 29 182.8 0 0.0 0.94
2.5.60-cfq0 2 28 192.9 0 0.0 0.90
2.5.60-cfq16 2 29 182.8 0 0.0 0.94
process_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.60 2 38 142.1 12 47.4 1.23
2.5.60-cfq0 2 41 129.3 16 61.0 1.32
2.5.60-cfq16 2 37 145.9 12 43.2 1.19
ctar_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.60 2 38 147.4 0 0.0 1.23
2.5.60-cfq0 2 36 155.6 0 0.0 1.16
2.5.60-cfq16 2 36 155.6 0 0.0 1.16
xtar_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.60 2 40 140.0 0 2.5 1.29
2.5.60-cfq0 2 37 148.6 0 2.7 1.19
2.5.60-cfq16 2 40 137.5 0 2.5 1.29
io_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.60 2 93 61.3 2 14.0 3.00
2.5.60-cfq0 4 103 54.4 2 12.6 3.32
2.5.60-cfq16 2 264 21.6 12 19.9 8.52
read_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.60 2 40 140.0 0 5.0 1.29
2.5.60-cfq0 2 39 143.6 0 5.1 1.26
2.5.60-cfq16 2 40 140.0 0 5.0 1.29
list_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.60 2 35 157.1 0 8.6 1.13
2.5.60-cfq0 2 35 160.0 0 8.6 1.13
2.5.60-cfq16 2 35 160.0 0 14.3 1.13
mem_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.60 2 50 116.0 75 10.0 1.61
2.5.60-cfq0 2 57 101.8 78 8.8 1.84
2.5.60-cfq16 2 60 96.7 80 8.2 1.94
dbench_load:
Kernel [runs] Time CPU% Loads LCPU% Ratio
2.5.60 2 36 155.6 12693 27.8 1.16
2.5.60-cfq0 1 35 157.1 12013 28.6 1.13
2.5.60-cfq16 2 37 151.4 14356 32.4 1.19
--
Jens Axboe
next prev parent reply other threads:[~2003-02-11 13:27 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-11 10:55 [BENCHMARK] 2.5.60-cfq with contest Con Kolivas
2003-02-11 10:59 ` Jens Axboe
2003-02-11 13:37 ` Jens Axboe [this message]
2003-02-11 14:49 ` Jens Axboe
2003-02-12 10:47 ` Con Kolivas
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