Subject: Re: solaris disk I/O
To: Wojciech Puchar <wojtek@wojtek.3miasto.net>
From: Manuel Bouyer <bouyer@antioche.lip6.fr>
List: tech-kern
Date: 09/10/2001 11:20:31
On Mon, Sep 10, 2001 at 01:29:30AM -0700, Wojciech Puchar wrote:
> i've installed x86 solaris. while it's graphical tools (while i don't know
> now how to turn off while installing, and how to configure devices) it's
> terribly slow, java-bloated etc., OS itself looks fast.
> 
> especially disk I/O. i found that while it buffers well small file I/O on
> it's dynamically resizable cache, it doesn't bloat memory with large file
> I/O. and doesn't "stall" when lots of writes are pending like netbsd.
> 
> filesystem looks like ffs (it's called ufs there), but i found
> cylinders/group to be set to 1000 - value impossible for netbsd.
> 
> could such behavior (large/small files) be somewhat implemented? i've
> tested -current integrated VM/disk cache and it's almost unusable. copying
> 500MB files means wiping out everything from memory to swap.
> like in windoze.
> it's bad to see netbsd is worse in new version.

You have sysctls to tune this.

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
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