Subject: Re: more on mysql benchmark
To: Chuck Silvers <chuq@chuq.com>
From: SODA Noriyuki <soda@sra.co.jp>
List: tech-kern
Date: 03/07/2005 12:41:44
>>>>> On Mon, 7 Mar 2005 12:16:29 +0900 (JST),
SODA Noriyuki <soda@sra.co.jp> said:
> - On the other hand, file pages are now becomes protected by vm.filemax,
> because it is currently only using 10% and that's less than vm.filemax.
This description was not right. The file pages are less than
vm.filemax before anonymous pages grow.
The reason why file pages becomes to steal anonymous pages is
because when both file pages and anonymous pages are less than max,
file pages cannot steal physicaly memory from anoymous pages blindly
(the behaviour of file pages are controlled by the page deamon),
but when anoymous pages becomes greater than its max, file pages
becomes to steal physical memory blindly.
> - So, file pages now becomes to steal anonymous pages.
--
soda