Date: Fri, 29 Apr 2005 11:18:19 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Peter Losher" <Peter_Losher@isc.org> Cc: freebsd-performance@freebsd.org Subject: Re: Very low disk performance Highpoint 1820a Message-ID: <08a501c54ca4$c3e80f00$7f06000a@int.mediasurface.com> References: <06ba01c54bff$8c5aed00$7f06000a@int.mediasurface.com> <4271812F.4060808@isc.org>
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There is no precompiled version for 5.3 but looking at the openbuild version its the same driver as the built in. 80MB/s is still terrible should be looking closer to 200MB/s. Steven Hartland wrote: > 5.4-STABLE Highpoint 1820a RAID 5 ( 5 disk ) > dd if=/dev/da0 of=/dev/null bs=64k count=10000 > 10000+0 records in > 10000+0 records out > 655360000 bytes transferred in 13.348032 secs (49097875 bytes/sec) Have you tried the driver supplied by Highpoint as a pre-compiled kernel module? I have a 1820A with 4x400GB Hitachi SATA disks (RAID5 + 1 Hot Spare) in a system running 5.3-RC3/amd64, where I have to use the kernel module, and I get almost double the speed that you have: -=- % dd if=/dev/da0 of=/dev/null bs=64k count=10000 10000+0 records in 10000+0 records out 655360000 bytes transferred in 7.775190 secs (84288614 bytes/sec) ================================================ This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone (023) 8024 3137 or return the E.mail to postmaster@multiplay.co.uk.
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