spreading partitions over multiple drives
bob at immure.com
Fri Sep 10 09:45:01 PDT 2004
On Fri, Sep 10, 2004 at 06:00:51PM +0200, Geert Hendrickx wrote:
> 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.
Hmm, how to you follow the prescribed process of rebooting between the
buildworld/installkernel and installworld if you put /usr/obj on a RAM
disk? Following the reboot you'll have no objects to install.
> freebsd-performance at freebsd.org mailing list
> To unsubscribe, send any mail to "freebsd-performance-unsubscribe at freebsd.org"
Bob Willcox Acquaintance, n.:
bob at immure.com A person whom we know well enough to borrow from,
Austin, TX but not well enough to lend to.
-- Ambrose Bierce, "The Devil's Dictionary"
More information about the freebsd-performance