Hello Because I did not find any recent performance charts I've made a short test with bonnie. maybe useful result: 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 ser-pe2650 2G 106521 93 65022 49 231492 85 1122 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 16740 83 +++++ +++ 17308 100 19311 99 +++++ +++ 16090 100 ser-pe2650,2G,,,106521,93,65022,49,,,231492,85,1121.9,4,16,16740,83,+++++,+++,17308,100,19311,99,+++++,+++,16090,100 Dell Poweredge 2650 2*2Ghz xeon; 1Gb RAM, md device: 14*36Gb 10KRPM SCSI HDD on two channels of an adaptec 39160 (2*7 disk) md0 : active raid5 sdq1[13] sdp1[12] sdo1[11] sdn1[10] sdm1[9] sdl1[8] sdk1[7] sdj1[6] sdi1[5] sdh1[4] sdg1[3] sdf1[2] sde1[1] sdd1[0] 462275840 blocks level 5, 256k chunk, algorithm 2 [14/14] [UUUUUUUUUUUUUU] I think the bottleneck is the 39160 because it runs only on 64bit 33 MHz regards Smalla - 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