* slow read performance...
@ 2001-12-10 4:48 Ian Molton
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From: Ian Molton @ 2001-12-10 4:48 UTC (permalink / raw)
To: linux-kernel
Hi.
I've just run bonnie (Im curious :) and got some disappointing figures.
Im running a Duron @ 976MHz, on an ASUS A7M (76x northbridge, via 686B
southbridge)
the machine has 256MB RAM and a seagate ST320413A UDMA 100 harddisc as the
only device on the primary ide interface.
UDMA is /on/, and all in hdparm looks OK - 32 bit IO etc.
write speed is fine (22-30MB/sec) but reads are horribly slow, as little as
9MB/sec and I havent seen >16MB/sec yet.
I am using a 400MB test in bonnie to remove linuxs disc cache from the
equation, as suggested by someone here.
I thought HDDs were supposed to /read/ faster than they write?
if 9MB/sec normal? seems low... I thought UDMA 100 discs were up around the
30MB/sec mark for reads...
or does bonnie just report unrealistic read speeds? the machine 'feels'
responsive enough...
TIA...
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2001-12-10 4:48 slow read performance Ian Molton
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