From: rwhron@earthlink.net
To: ak@muc.de
Cc: linux-kernel@vger.kernel.org
Subject: Re: [NEW PATCH, testers needed] was Re: [PATCH] poll/select fast path
Date: Tue, 25 Jun 2002 06:26:09 -0400 [thread overview]
Message-ID: <20020625102609.GA12253@rushmore> (raw)
> The patch should apply & works for me on 2.4 too, no need to use 2.5
> (select/poll are virtually unchanged between 2.4 and 2.5)
Running lmbench on quad xeon with Andi's patch shows a reduction
in select latency in all cases compared to -pre10.
File select - times in microseconds - smaller is better
Average of 25 runs. -ak-axboe is select/poll patch +
blockhighmem.
select select select select select select select select
kernel 10 fd 100 fd 250 fd 500 fd 10 TCP 100TCP 250TCP 500TCP
--------------------- ------ ------ ------ ------ ------ ------ ------ ------
2.4.19-pre10 4.73 30.66 74.62 143.77 5.67 40.879 97.914 193.10
2.4.19-pre10-ak-axboe 3.85 27.83 71.55 142.78 4.86 37.517 94.205 191.54
2.4.19-pre10-aa4 4.54 29.48 73.96 147.52 5.60 39.485 98.895 194.58
2.4.19-pre10-ac2 4.63 29.60 73.33 141.86 5.64 39.328 98.898 192.82
--
Randy Hron
http://home.earthlink.net/~rwhron/bigbox.html
next reply other threads:[~2002-06-25 10:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-25 10:26 rwhron [this message]
-- strict thread matches above, loose matches on Subject: below --
2002-06-18 8:06 [PATCH] poll/select fast path Andi Kleen
2002-06-19 5:58 ` [NEW PATCH, testers needed] was " Andi Kleen
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