Date: Tue, 10 Mar 1998 23:40:51 -0800 From: Amancio Hasty <hasty@rah.star-gate.com> To: "Jordan K. Hubbard" <jkh@FreeBSD.ORG> Cc: "Alok K. Dhir" <adhir@worldbank.org>, current@FreeBSD.ORG, Daniel Ingber <ingber@worldbank.org> Subject: Re: Amazing :-) Message-ID: <199803110740.XAA04756@rah.star-gate.com> In-Reply-To: Your message of "Tue, 10 Mar 1998 23:06:28 PST." <26195.889599988@time.cdrom.com>
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> > I just enabled softupdates on all filesystems except root on my SMP
> > -current machine (dual 300Mhz Pentium II, Adaptec 2940UW SCSI, 256MB RAM).
> > The "make world" time just went from ~6 hours to 2 hours 20 mins.
>
> That actually says more odd things about your disk layout. On The
> dual PII/300 box we have here with 128MB of RAM and /usr/{src,obj}
> striped across a 5 disk CCD (all IBM DCAS 4.3GB 5400 RPM drives), the
> build time is 1:25 without any sort of soft updates being used, just
> async mounts.
Me seriously thinks that you need 10000 rpms disks real bad 8)
Something like this:
sd0: <SEAGATE ST34501W 0017> type 0 fixed SCSI 2
On a serious note if you are constantly doing "make worlds" it pays to
have a very fast disk subsystem and the group can consider my note
a hint 8)
Cheers,
Amancio
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