Subject: Re: disk write performance with softdep
To: None <hira@po6.nsk.ne.jp>
From: YAMAMOTO Takashi <yamt@mwd.biglobe.ne.jp>
List: tech-kern
Date: 04/10/2006 07:06:53
hi,
> On my machine (ThinkPad X32), disk write performance with softdep
> is about 4 times as slow as before. It takes about 3 or 4 times
> as long to copy the files. And with bonnie++, the sequential
> output (per char) is 1/4.
>
> It seems to be related to this commit (please see the following
> results of bonnie++).
>
> http://mail-index.NetBSD.org/source-changes/2006/03/30/0021.html
i've reverted the problematic part.
is your filesystem block size larger than 8k ?
YAMAMOTO Takashi