Date: Sat, 19 Apr 1997 14:11:56 -0700 From: Amancio Hasty <hasty@rah.star-gate.com> To: Warner Losh <imp@village.org> Cc: current@freebsd.org Subject: Re: Speed deamons: How to build a build box? Message-ID: <199704192111.OAA03728@rah.star-gate.com> In-Reply-To: Your message of "Sat, 19 Apr 1997 14:52:37 MDT." <E0wIh7e-0007NB-00@rover.village.org>
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The disks don't seem to be running that fast. Post the disk geometry
and probably someone one the list will be able to help you set it up.
I get this with my 5400 quantum disk drive
16 8192 3273603 74051160
The read value is because of caching.
You may want to post your disklabel info:
setenv EDITOR emacs
disklabel -e -r /dev/rsd0
then save the geometry to a file or if you are running X just cut and paste.
Cheers,
Amancio
>From The Desk Of Warner Losh :
> In message <199704192025.NAA03263@rah.star-gate.com> Amancio Hasty writes:
> : One of the first things that I would is to check the system BIOS and
> : make sure that the PCI settings are set for optimal performance.
>
> They seem to be.
>
> : Next check the speed of the disks with something like iozone.
>
> IOZONE tells me:
>
> JAZ: 1.5MB/s write, 5.2MB/s read
> Fireball: 1.4MB/s write, 2.7MB/s read
>
> Disks are both 4500 rpm. The JAZ is 12ms seek and the Fireball is
> 10.5ms seek time.
>
> These disks could easily be much faster :-) However, async, noatime
> mounting seems to be about the best thing I can do for the build. I
> have about a half dozen builds done now, and want to do one or two
> more. I'll post the summary when I finish.
>
> Warner
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