Messages in this thread | | | Date | Sun, 27 Jan 2002 01:42:16 +0100 (CET) | From | Dave Jones <> | Subject | Re: IO Throughput Problem with 2.5.2-dj6 and HPT370 RAID Controller |
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On 26 Jan 2002, Jim McDonald wrote:
> Which shows a couple of things: first, that the single-drive performance > of 2.5.2-dj6 seems to be really low, and second that running both disks > at the same time results in each disk itself transferring data faster > than when they were running alone!
I'm not sure about the cause of the performance drop, but one thing I did notice that maybe Andre can shed some insight on..
> Boot log from 2.4.17: > hda: 53369568 sectors (27325 MB) w/2048KiB Cache, CHS=3322/255/63, UDMA(66) > hdc: 80043264 sectors (40982 MB) w/2048KiB Cache, CHS=79408/16/63, UDMA(33) > hde: 120069936 sectors (61476 MB) w/2048KiB Cache, CHS=119117/16/63, UDMA(100) > hdg: 120069936 sectors (61476 MB) w/2048KiB Cache, CHS=119117/16/63, UDMA(100) > > Boot log from 2.5.2-dj6: > hda: 53369568 sectors (27325 MB) w/2048KiB Cache, CHS=3322/255/63, UDMA(66) > hdc: 80043264 sectors (40982 MB) w/2048KiB Cache, CHS=79408/16/63, UDMA(33) > hde: 120069936 sectors (61476 MB) w/2048KiB Cache, CHS=119117/255/63, UDMA(100) > hdg: 120069936 sectors (61476 MB) w/2048KiB Cache, CHS=119117/255/63, UDMA(100)
Note that the drives that are now reported as slower have slightly different geometry. Andre ?
-- | Dave Jones. http://www.codemonkey.org.uk | SuSE Labs
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