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).
