Date: Sun, 25 Nov 2007 13:34:41 +0100 From: Espen Tagestad <espen@modula.no> To: freebsd-hardware@freebsd.org, freebsd-stable@freebsd.org Subject: SAS5IR performance issue with Dell 860 Message-ID: <47496BE1.8080206@modula.no>
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Hi, We recently bought 3 new Dell 860 servers with the onboard SAS5/IR SATA RAID-controller. They seem to be quite well spec'ed servers with management and everything - but I am experiencing av major performance issue with the disc i/o. On write I get at max 7-8MB/sec, while read gives a bit more (11MB/sec). I tried first with 6.2-RELEASE, and then upgraded to 6.3-PRERELEASE without any better results. I am aware of some discussion around this issue on these two maillists in the spring earlier on this year, but I have not been able to find any good resolution. My old firewall/router at home equipped with a 733Mhz Pentium 3 processor and a old 40GB IDE harddrive made around year 2001 performe better. Is there anybody out there with the same problem who has solved this issue? Could it be that this is solved in 7.0? Thanks in advance. -- med vennlig hilsen/with regards, Espen Tagestad Modula AS Tel. (+47) 23 89 75 80 Mob. (+47) 92 44 50 12 Fax. (+47) 23 89 75 81
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