Date: Fri, 6 May 2005 16:26:45 +0300 (EEST) From: Anton Turygin <pa3op@tsua.net> To: Herve Boulouis <amon@sockar.homeip.net> Cc: freebsd-scsi@freebsd.org Subject: Re: Adaptec 2120S FreeBSD 4.11 poor performance Message-ID: <20050506162412.G91866@colt.tsua.net> In-Reply-To: <20050506121942.GB71715@ra.aabs> References: <20050506130002.L13748@colt.tsua.net> <20050506121942.GB71715@ra.aabs>
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On Fri, 6 May 2005, Herve Boulouis wrote: > Le 06/05/2005 13:09, Anton Turygin a écrit: >> >> The speed in the array doesn't raise over 7 MB/s. >> Can anyone help me to figure out? >> Thanks in advance. > > A common thing to do is to disable the read cache and only enable > write caching for your container. > > CLI > open aac0 > Executing: open "aac0" > > AAC0> container show cache 0 > Executing: container show cache 0 > > Global Container Read Cache Size : 0 > Global Container Write Cache Size : 16203776 > > Read Cache Setting : DISABLE > Write Cache Setting : ENABLE ALWAYS > Write Cache Status : Active, not protected, battery not present > > Hope this helps. > Thanks, it helped a bit ;-) Now I have: _container > show cache 0 Executing: container show cache 0 Global Container Read Cache Size : 0 Global Container Write Cache Size : 16203776 Read Cache Setting : ENABLE Write Cache Setting : ENABLE ALWAYS Write Cache Status : Active, not protected, battery not present The array speed is up to 35 MB/s (it is still not enough). The only thing - I didn't have succes in turning the Read Cache off. -- RAZ-UANIC RAZ-RIPE Technological Systems CJVC System Administrator
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