24 Jul
2004
24 Jul
'04
10:57 a.m.
Note that the method used by hdparm tends to underreport
achievable throughput somewhat, because it generally only
ever has one I/O "in flight".
Cheers
--
Mark Lord
(hdparm keeper & the original "Linux IDE Guy")
Lee Revell wrote:
On Tue, 2004-07-20 at 08:19, Jens Axboe wrote:
>On Tue, Jul 20 2004, Ingo Molnar wrote:
>
>>>How much I/O do you allow to be in flight at once? It seems like by
>>>decreasing the maximum size of I/O that you handle in one interrupt
>>>you could improve this quite a bit. Disk throughput is good enough,
>>>anyone in the real world who would feel a 10% hit would just throw
>>>hardware at the problem.
...
According to hdparm, the throughput is still quite
good (42MB/sec on a
sub-$100 IDE drive).