Date: Thu, 11 Dec 2003 11:47:23 +0100 From: amon@sockar.homeip.net To: Scott Long <scottl@freebsd.org> Cc: freebsd-scsi@freebsd.org Subject: Re: Performance problem with adaptec 2120S Message-ID: <20031211114723.D206@ra.aabs> In-Reply-To: <20031210135055.T6877@pooker.samsco.home>; from scottl@freebsd.org on Wed, Dec 10, 2003 at 01:54:37PM -0700 References: <20031210173002.B206@ra.aabs> <20031210094420.D6877@pooker.samsco.home> <20031210201056.C206@ra.aabs> <20031210135055.T6877@pooker.samsco.home>
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Le 10/12/2003 à 13:54, Scott Long a écrit: > > Some hardware architecture choices were made that influence this. Better > choices were made with the 2200S so it should be faster, especially in a > 64/66 PCI slot. I see. > Are you talking about the write cache on the drives or on the array? You > should never enable the write cache on the drives unless you are certain > that you will never ever have a power failure. FOr the arrays, the > optimal cache configuration is to have the read cache turned off and the > write cache turned on. If this is not the case for you, I'd like to see > the diagnostic output from the card. I only enabled the write cache of the array and aaccli now shows : AAC0> COMMAND: container show cache 0 Executing: container show cache 0 Global Container Read Cache Size : 475136 Global Container Write Cache Size : 40140800 Read Cache Setting : DISABLE Write Cache Setting : ENABLE ALWAYS Write Cache Status : Active, not protected, battery not present The complete 'diag dump text' output is there : http://khonshou.hst.nerim.net/aac-diag Are all those NMI_SECONDARY_ATU_ERROR in the history buffer normal ? -- Herve Boulouis - EFREI Promo 2003 - Equipe systeme Unix
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