Hi,
I made the tests between ide and scsi soft raid and I do not understand
why scsi 2940u2w seems to be slower that ide on promise !?
thanks for your help
octave
PIII500/256/SCSI-2/RAID-1/2xIBM18Go7200
2.2.12
Dir Size BlkSz Thr# Read (CPU%) Write (CPU%) Seeks (CPU%)
----- ------ ------- ---- ------------- -------------- --------------
/home 2000 4096 1 17.4258 8.74% 16.6533 14.2% 115.613 0.69%
/home 2000 4096 2 12.7758 6.45% 16.5894 14.0% 118.514 0.71%
/home 2000 4096 4 11.9168 6.09% 16.5274 14.1% 119.822 0.68%
/home 2000 4096 8 11.5667 5.97% 16.5026 14.2% 122.879 0.71%
AMD300/128/1x20Go + 2promise 66 + 1X20Go + 3x20Go
2.2.14 + raid 2.2.14-B1 + ide.2.2.14
Dir Size BlkSz Thr# Read (CPU%) Write (CPU%) Seeks (CPU%)
----- ------ ------- ---- ------------- -------------- --------------
/norm 2000 4096 1 22.0395 41.9% 20.6896 55.8% 100.830 0.93%
/norm 2000 4096 2 21.8905 41.8% 20.7437 55.9% 99.6739 0.77%
/norm 2000 4096 4 21.5580 41.3% 20.7294 56.0% 98.9896 0.75%
/norm 2000 4096 8 21.3517 41.0% 20.6426 55.9% 99.4128 0.80%
Dir Size BlkSz Thr# Read (CPU%) Write (CPU%) Seeks (CPU%)
----- ------ ------- ---- ------------- -------------- --------------
/rai0 2000 4096 1 34.7264 97.3% 25.0024 49.9% 111.635 1.47%
/rai0 2000 4096 2 33.1535 88.5% 25.1183 50.8% 131.618 1.46%
/rai0 2000 4096 4 32.6545 85.9% 25.1404 51.9% 151.188 1.51%
/rai0 2000 4096 8 32.5222 85.8% 25.1485 53.2% 167.786 1.69%
Dir Size BlkSz Thr# Read (CPU%) Write (CPU%) Seeks (CPU%)
----- ------ ------- ---- ------------- -------------- --------------
/rai1 2000 4096 1 17.4453 27.0% 12.1779 22.9% 88.4537 1.30%
/rai1 2000 4096 2 15.7030 24.1% 12.1825 23.6% 107.810 1.50%
/rai1 2000 4096 4 14.7477 22.5% 12.1761 24.9% 118.357 1.45%
/rai1 2000 4096 8 14.3447 22.2% 12.1755 26.9% 125.993 1.40%
Dir Size BlkSz Thr# Read (CPU%) Write (CPU%) Seeks (CPU%)
----- ------ ------- ---- ------------- -------------- --------------
/rai5 2000 4096 1 31.2000 40.6% 13.0731 21.7% 106.626 0.77%
/rai5 2000 4096 2 23.7602 35.1% 13.0873 21.9% 128.579 1.07%
/rai5 2000 4096 4 20.7235 31.5% 13.0911 22.1% 147.919 1.29%
/rai5 2000 4096 8 18.0292 28.6% 13.1051 22.3% 164.432 1.56%
