Re: Is Read speed faster when 1 disk is failed on raid5 ?

did the same test with 4 disks in raid5

4 disks raid5 synced :

Version 1.02c       ------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
storagenew.a2000 1G 18654  99 64992  63 24127  25 23504  97 57140  17
480.7   2
                    ------Sequential Create------ --------Random
Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read---
-Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
/sec %CP
                 16  1915  96 +++++ +++ +++++ +++  2002  98 +++++ +++
5422  98
storagenew.a2000.nu,1G,18654,99,64992,63,24127,25,23504,97,57140,17,480.7,2,16,1915,96,+++++,+++,+++++,+++,2002,98,+++++,+++,5422,98


raid5 4disks, 1 failed :

Version 1.02c       ------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
storagenew.a2000 1G 18566  99 58434  57 27743  35 23089  98 119752  56
332.1   1
                    ------Sequential Create------ --------Random
Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read---
-Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
/sec %CP
                 16  1942  97 +++++ +++ +++++ +++  1978  99 +++++ +++
5585  99
storagenew.a2000.nu,1G,18566,99,58434,57,27743,35,23089,98,119752,56,332.1,1,16,1942,97,+++++,+++,+++++,+++,1978,99,+++++,+++,5585,99