Re: Linux disk performance.

[Manish Regmi]

On 12/22/06, Bhanu Kalyan Chetlapalli <chbhanukalyan@xxxxxxxxx> wrote:
> >
> > Thanks  for the suggestion but the performance was terrible when write
> > cache was disabled.
>
> Performance degradation is expected. But the point is - did the
> anomaly, that you have pointed out, go away? Because if it did, then
> it is the disk cache which is causing the issue, and you will have to
> live with it. Else you will have to look elsewhere.

oops, sorry for incomplete answer.
Actually i did not tested thoroughly but my initial tests showed some
bumps and serious performance degradation. But anyway there was still
some bumps... :(

(sequence)(channel)(write time in microseconds)
0	       0	6366
0	       1	9949
0	       2	10125
0	       3	10165
0	       4	11043
0	       5	10129
0	       6	10089
0	       7	10165
0	       8	71572
0	       9	9882
0	       10	8105
0	       11	10085


--
---------------------------------------------------------------
regards
Manish Regmi

---------------------------------------------------------------
UNIX without a C Compiler is like eating Spaghetti with your mouth
sewn shut. It just doesn't make sense.
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