> Actually, you have not said a word about which controllers you use (for > the drives). Using the wrong controller can drain speed a lot. As from > the kernel benchmarks it seems like neither RAM nor computing power are > the bottlenecks. > > Some SATA-controllers handle "nearly parallel" writes to multiple drives > better than others. SiI products for example have a noticeable drop-off > for each disk you add. Pretty late Intels nearly show no impact of many > disks in parallel. So maybe that could be the topic you should be > after. (And maybe a lspci could help :) > > Stefan Hi Stefan, Here is the output of lspci. There are 5 disks on the ATI controller. Four of them are part of the RAID. The last disk is on the JMicron controller which is a PCIE-1x card. I can move one more disk to the JMicron controller if you think that would help. Or just purchase a new 4 port controller? lspci|grep SATA 00:11.0 SATA controller: ATI Technologies Inc SB700/SB800 SATA Controller [IDE mode] 02:00.0 SATA controller: JMicron Technologies, Inc. 20360/20363 Serial ATA Controller (rev 03) --- Will Y. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. -- 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
