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SubjectRe: Heavy disk IO stalls ftp/http downloads
Date
On Fri, 23 Nov 2001 11:32, Samium Gromoff wrote:
> does hdparm -u1 fixes the problem?
> -u1 == unmasq irq during its handling
> the problem is that serial port need its interrupt to be served with
> minimal latency, and the drives makes that impossible, unless irqs are
> unmasked...
Hello Samium,

Thanks a lot for your response.

Yes, I have -u1 support enabled for both the hard drives (in fact it is
/sbin/hdparm -m16 -c3 -u1 -X66 -d1 -W1 /dev/hda and /dev/hdc). But,
unfortunately it does not fix the problem.

Here is the 'hdparm' output from the hard drives:
/dev/hda:
multcount = 16 (on)
I/O support = 3 (32-bit w/sync)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
nowerr = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 1247/255/63, sectors = 20044080, start = 0

/dev/hdc:
multcount = 16 (on)
I/O support = 3 (32-bit w/sync)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
nowerr = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 1240/255/63, sectors = 19931184, start = 0
--
Hari.
harisri@bigpond.com
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