Date: Fri, 10 Sep 2004 18:00:51 +0200 From: Geert Hendrickx <geert.hendrickx@ua.ac.be> To: Willem Jan Withagen <wjw@withagen.nl> Cc: oceanare@pacific.net.sg Subject: Re: spreading partitions over multiple drives Message-ID: <20040910160051.GA24152@lori.mine.nu> In-Reply-To: <4141AA6A.2070802@withagen.nl> References: <20040831133551.GA86660@lori.mine.nu> <4134B312.8030309@pacific.net.sg> <1093958674.680.2.camel@book> <20040831183908.GA87694@lori.mine.nu> <4141AA6A.2070802@withagen.nl>
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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
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