Date: Wed, 1 Mar 2006 11:39:46 +0200 (EET) From: Dmitry Pryanishnikov <dmitry@atlantis.dp.ua> To: "Mikhail T." <mi@aldan.algebra.com> Cc: current@freebsd.org, sos@freebsd.org Subject: Re: pitiful performance of an SATA150 drive Message-ID: <20060301113203.K57057@atlantis.atlantis.dp.ua> In-Reply-To: <200603010505.k2155HfQ003205@aldan.algebra.com> References: <200603010505.k2155HfQ003205@aldan.algebra.com>
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Hello! On Wed, 1 Mar 2006, Mikhail T. wrote: > I installed a new 500Gb SATA drive into my 6.1 system and am greatly > disappointed with its performance. Although straight reading is > Ok at around 32Mb/s, the writing is never more than 7Mb/s (as reported > by `systat 1 -vm' while running `cat < /dev/zero > /dev/ad8'). This may give you terrible performance due to small (4 Kb) buffer size. Try the following command instead: dd if=/dev/zero bs=1m of=/dev/ad8. Sincerely, Dmitry -- Atlantis ISP, System Administrator e-mail: dmitry@atlantis.dp.ua nic-hdl: LYNX-RIPE
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