Ok did a benchmark between software raid en hw raid controller 3ware 7850 (7500-8 now?) with 5 * WDC 120GB 7200RPM (2mb cache) On xeon dual 2GHZ (controller in 64bits pci) results : ---raid5 5*120gb sw raid : 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 18850 99 78959 77 29982 29 24052 99 81547 22 510.5 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 1933 97 +++++ +++ +++++ +++ 1986 98 +++++ +++ 5056 98 storagenew.a2000.nu,1G,18850,99,78959,77,29982,29,24052,99,81547,22,510.5,2,16,1933,97,+++++,+++,+++++,+++,1986,98,+++++,+++,5056,98 ---raid5 5*120gb hw raid : 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 17100 85 32250 23 12053 5 22660 91 49603 10 466.9 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 1872 93 +++++ +++ +++++ +++ 1976 98 +++++ +++ 5677 100 storagenew.a2000.nu,1G,17100,85,32250,23,12053,5,22660,91,49603,10,466.9,1,16,1872,93,+++++,+++,+++++,+++,1976,98,+++++,+++,5677,100 - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html