the slow disks (them with 85MB/s) in the posting are the one on the pci 4x sata controller the 32bit pci sata (sata_sil) controller has 3 disks connected the onboard sata2 6x sata connectors have 6 disks connected (p5n32-e sli motherboard), i believe all these are sata2 and not shared with an ide controller. so only the pci controller should have bus limitations, but i wonder why it is that slow on reshape compared to build. unfortunately I have not gotten the recent postings on the mailinglist since 28th last month perhaps my subscription got cleared so I didn't see any reshape postings, just signed up on new. here you can see the 3 slow disks pci32bit compared to onboard sata2 (sdb): sda 200+0 records in 200+0 records out 209715200 bytes (210 MB) copied, 2,46597 s, 85,0 MB/s sdb 200+0 records in 200+0 records out 209715200 bytes (210 MB) copied, 1,66641 s, 126 MB/s sdc 200+0 records in 200+0 records out 209715200 bytes (210 MB) copied, 2,51205 s, 83,5 MB/s sdd 200+0 records in 200+0 records out 209715200 bytes (210 MB) copied, 2,33702 s, 89,7 MB/s are there any good tools you can recommend to test bus congestion as the probable cause of this slowness? /Michael -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
