Date: Thu, 28 Aug 2003 10:58:47 +0200 From: Alexander Marx <mad-ml@madness.at> To: Bill Moran <wmoran@potentialtech.com> Cc: freebsd-performance@freebsd.org Subject: Re: Some additional tests run on my performance testing Message-ID: <3F4DC447.50801@madness.at> In-Reply-To: <3F4D5957.8000204@potentialtech.com> References: <3F4D5957.8000204@potentialtech.com>
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Bill Moran wrote: [...] > Hell, can someone try out the tests on some > other brand of ATA/HDD, to make sure FreeBSD doesn't just > have some grief with this particular piece of hardware? > hm .. just ran your benchmark on my personal webserver box (fbsd 4.8, t-bird 1000; 512MB ram, two WD800JB w/ 8MB cache in a vinum raid1 config, softupdates enabled; pgsql 7.3.2, fsync=true, shared buffers=512, max_connections=250 everything else default) : real 7m17.967s : user 0m0.017s : sys 0m0.000s looking at systat output during the benchmark .. it shows quite some heavy disk-io (peaks w/ 660tps and transfers in excess of 40MB/s) .. so if your box is falling back to PIO this would definately be a reason for the lousy results. regards, alex.
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