Date: Mon, 26 May 2003 16:47:22 +0200 From: Christophe Zwecker <doc@zwecker.de> To: Heiko Schaefer <hschaefer@fto.de>, current@freebsd.org Subject: Re: gbde Performance - 35Mb/s vs 5.2 MB/s Message-ID: <3ED228FA.6030902@zwecker.de> In-Reply-To: <20030526141901.J294@daneel.foundation.hs> References: <3ED203E6.1000202@zwecker.de> <20030526141901.J294@daneel.foundation.hs>
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Heiko Schaefer wrote: > Hi Christophe, > Poul gave me the following tip on this list in a mail on Tue, 29 Apr 2003: > > "Remember to set the sectorsize in gbde (gbde init -i) to the fragment > size of your filesystem (typically 2048 for ufs), this is critical > for performance." > > did you do that? yes, he gave me the same tip, before that I hat 1.8mb (!) since my cpu is faster than yours I should easily reach the 10MB/s and more. > i do not have exact numbers, but i think i can get approx 10MB/s writing > on my gbde disks with an athlon xp 1800+. > > ...i would be curious about what top (or ps auxw) tell you while you use > your gbde disk. from what i've experienced, your cpu shouldn't be maxed > out with 5MB/s throughput. the dd command takes max 5% cpu load while doing the test > gbde is fairly slow for me too, but by using "gbde init -i", the cpu is > the limiting factor. and i'm fairly fine with that, assuming the crypto > that is done is sound :) ...unfortunately only with time that will become > somewhat certain. well you know wether it will speed up later on ? Its ok, unless I have to reformat, I dont have the means to backup 700gb of data just like that. thx for your comments anyway ! Christophe -- Christophe Zwecker mail: doc@zwecker.de Hamburg, Germany fon: +49 179 3994867 http://www.zwecker.de "Who is General Failure ? And why is he reading my disk ??"
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