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Date: Sun, 7 Nov 2010 00:50:40 +0200
From: Michael Shigorin <mike@osdn.org.ua>
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On Sat, Nov 06, 2010 at 11:44:30PM +0200, Yura Kalinichenko wrote:
> >Погоняй разные io scheduler'ы, меня устроил deadline.
> Да, конечно. А ты BFQ не пробовал часом ?

Не-а, можешь led@ спросить, у него есть такие (не помню, .27 или .31).

> >hdparm -a 1024 /dev/sd[a-h] >/dev/null
> >hdparm -a 4096 /dev/md[04] >/dev/null
> Как может read-ahead влиять на производительность записи ?

Снижением seek contention, если ляжет на характер чтения.

-- 
 ---- WBR, Michael Shigorin <mike@altlinux.ru>
  ------ Linux.Kiev http://www.linux.kiev.ua/