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Date: Fri, 10 Sep 2004 18:00:51 +0200
From: Geert Hendrickx <geert.hendrickx@ua.ac.be>
To: Willem Jan Withagen <wjw@withagen.nl>
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cc: freebsd-performance@freebsd.org
cc: oceanare@pacific.net.sg
Subject: Re: spreading partitions over multiple drives
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On Fri, Sep 10, 2004 at 03:21:46PM +0200, Willem Jan Withagen wrote:
> I would expect a bigger system to cache just about all file access 
> during 'make buildworld'.
> Even when building things with -j 64 I can not get my dual-opteron 1Gb 
> system  get without free pages.
> And as such most files will only be read once, and object output will be 
> "slowly" synced on the disks.
> Disk I/O rearly becomes the bottleneck, most of the time I'm missing raw 
> CPU cycles.
> And I have everything on 1 large 200Gb disk.

Ok so adding more RAM may be more useful than an extra harddisk?  Maybe
I could even put /tmp or /usr/obj on a RAM-disk?  A fully built /usr/obj
is about 350Mb.  

GH