Re: raid5 slow (test on another system)
From: Stephan van Hienen <hidden>
Date: 2004-12-01 19:23:21
today runned a test on another machine
(dual p3-733 with 4*9gb scsi)
looks like on this system the difference is arround the 10%
maybe you need more disks/faster disks to get a bigger difference
results :
2.6.10-rc2 4d r5 ext3
Version 1.03 ------Sequential Output------ --Sequential Input-
--Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block--
--Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP
/sec %CP
linuxtest.expl 496M 10364 99 39689 55 22184 36 11485 96 52559 46
632.0 4
------Sequential Create------ --------Random
Create--------
-Create-- --Read--- -Delete-- -Create-- --Read---
-Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
/sec %CP
16 512 99 +++++ +++ 32502 99 528 99 +++++ +++
1938 97
linuxtest.explainerdc.local,496M,10364,99,39689,55,22184,36,11485,96,52559,46,632.0,4,16,512,99,+++++,+++,32502,99,528,99,+++++,+++,1938,97
2.4.20 4d r5 ext3
Version 1.03 ------Sequential Output------ --Sequential Input-
--Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block--
--Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP
/sec %CP
linuxtest.expl 496M 10087 100 53021 63 20934 34 11746 98 58858 34
665.3 4
------Sequential Create------ --------Random
Create--------
-Create-- --Read--- -Delete-- -Create-- --Read---
-Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
/sec %CP
16 573 99 +++++ +++ 30886 99 592 99 +++++ +++
2264 96
linuxtest.explainerdc.local,496M,10087,100,53021,63,20934,34,11746,98,58858,34,665.3,4,16,573,99,+++++,+++,30886,99,592,99,+++++,+++,2264,96