Date: Thu, 18 Oct 2007 09:20:32 +0100 From: Richard Tector <richardtector@thekeelecentre.com> To: Stefan Lambrev <stefan.lambrev@moneybookers.com> Cc: freebsd-current@freebsd.org Subject: Re: Very slow HP 8 Internal Port SAS HBA with RAID 0, 1 on Hot Plug SAS/SATA Models (LSI SAS1068 - mpt) Message-ID: <47171750.8050906@thekeelecentre.com> In-Reply-To: <471715AD.3080102@moneybookers.com> References: <47161A42.2050306@moneybookers.com> <471636E4.90807@thekeelecentre.com> <47163ACC.1080807@moneybookers.com> <47163B9B.4010901@thekeelecentre.com> <471715AD.3080102@moneybookers.com>
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This is a cryptographically signed message in MIME format. --------------ms060905080309080309020304 Content-Type: text/plain; charset=windows-1251; format=flowed Content-Transfer-Encoding: 7bit Stefan Lambrev wrote: > Enabling write cache really helps, so now I have to find a battery > backup unit for the controller (if it supports it). > > Anyway here are the results of bonnie++ : > > Version 1.93c ------Sequential Output------ --Sequential Input- > --Random- > Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- > --Seeks-- > Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP > /sec %CP > netguard.com 16G 416 99 63957 15 26411 8 702 99 70399 13 > 192.2 5 > Latency 21185us 462ms 785ms 22855us 134ms > 139ms > Version 1.93c ------Sequential Create------ --------Random > Create-------- > netguard.com -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- > files:max:min /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP > /sec %CP > 256:65536:65536/16 865 13 897 9 30908 60 858 13 88 2 > 6251 48 > Latency 1082ms 136ms 357ms 1678ms 3044ms > 1065ms > 1.93c,1.93c,netguard..com,1,1192619536,16G,,416,99,63957,15,26411,8,702,99,70399,13,192.2,5,256,65536,65536,,16,865,13,897,9,30908,60,858,13,88,2,6251,48,21185us,462ms,785ms,22855us,134ms,139ms,1082ms,136ms,357ms,1678ms,3044ms,1065ms > > > But isn't 70MB/s sequential read little slow for raid 1 with 2x500GB > SATA II HDDs? 70MB/s from desktop drives is pretty respectabloe, IMHO. 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