Date: Mon, 27 Jun 2005 15:04:46 -0400 From: Garance A Drosihn <drosih@rpi.edu> To: Phil Regnauld <regnauld+ppc@catpipe.net> Cc: freebsd-ppc@freebsd.org Subject: Re: speed of disk I/O on PPC Message-ID: <p06230905bee5faacf352@[128.113.24.47]> In-Reply-To: <20050627072428.GD77236@catpipe.net> References: <BB91FD65-4CDB-4B8B-9684-E25BC050B9E3@VerariSoft.Com> <p06230901bee520d0e356@[128.113.24.47]> <20050627072428.GD77236@catpipe.net>
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At 9:24 AM +0200 6/27/05, Phil Regnauld wrote: >Garance A Drosihn (drosih) writes: >> me, so I haven't looked into other alternatives. I am running on >> a Mac-mini though, which has a rather slow hard drive (4200 rpm). >> So in my case, it's probably faster to stick with the NFS-mounted >> directory... :-) > > Indeed on my G4-450 the disk is running in PIO mode, so NFS > is definitely faster... I just did some buildworld timings on my Mac-mini, which has that really slow hard drive. I tried a buildworld with an NFS-mounted /usr/obj directory, and another with an NFS-mounted /usr/src directory. The NFS directories are coming from a i386 machine with much faster disks. Oddly enough, the buildworld was faster with both src and obj as local directories on the slow hard disk. This was a very simplistic benchmark, and there were some other things going on at the same time. Still, I was surprised that NFS-mounting some directories did not seem to speed anything up. Both local: real=5597.58 user=5157.62 sys= 75.53 NFS obj: real=6543.29 user=5203.52 sys=300.07 NFS src: real=6703.42 user=5564.93 sys= 90.69 -- Garance Alistair Drosehn = gad@gilead.netel.rpi.edu Senior Systems Programmer or gad@freebsd.org Rensselaer Polytechnic Institute or drosih@rpi.edu
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