Re: Very low disk performance Highpoint 1820a

From: Peter Losher (Peter_Losher_at_isc.org)
Date: 04/29/05

  • Next message: Petri Helenius: "Re: Very low disk performance Highpoint 1820a" 
    Date: Thu, 28 Apr 2005 17:34:55 -0700
To: Steven Hartland <killing@multiplay.co.uk>

    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)
    -=-

    Best Wishes - Peter 

    --
Peter_Losher@isc.org | ISC | OpenPGP 0xE8048D08 | "The bits must flow"

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