} -----Original Message----- } From: linux-raid-owner@xxxxxxxxxxxxxxx [mailto:linux-raid- } owner@xxxxxxxxxxxxxxx] On Behalf Of Gilberto Diaz } Sent: Monday, January 23, 2006 5:28 PM } To: linux-raid@xxxxxxxxxxxxxxx } Subject: cpu consumption } } Hello Everybody } } I have checked the list archive but I could not find any message that } help. So I'm asking for help here. I have a Sun storege with 12 sata } hard disks connected to a normal PC using a QLogic ISP2300 host adapter } card. I have configured 6 raid1, (2 hard disk each). I excecuted the } following commands to create all of the them } } mdadm --create --verbose /dev/md1 --level=raid1 --raid-devices=2 } /dev/sda /dev/sdb } mdadm --create --verbose /dev/md2 --level=raid1 --raid-devices=2 } /dev/sdc /dev/sdd } mdadm --create --verbose /dev/md3 --level=raid1 --raid-devices=2 } /dev/sde /dev/sdf } mdadm --create --verbose /dev/md4 --level=raid1 --raid-devices=2 } /dev/sdg /dev/sdh } mdadm --create --verbose /dev/md5 --level=raid1 --raid-devices=2 } /dev/sdi /dev/sdj } mdadm --create --verbose /dev/md6 --level=raid1 --raid-devices=2 } /dev/sdk /dev/sdl } } Here is my /etc/mdadm/mdadm.conf file } } DEVICE /dev/sd[abcdefghijkl] /dev/md1 /dev/md2 /dev/md3 /dev/md4 } /dev/md5 /dev/md6 } ARRAY /dev/md1 devices=/dev/sda,/dev/sdb } ARRAY /dev/md2 devices=/dev/sdc,/dev/sdd } ARRAY /dev/md3 devices=/dev/sde,/dev/sdf } ARRAY /dev/md4 devices=/dev/sdg,/dev/sdh } ARRAY /dev/md5 devices=/dev/sdi,/dev/sdj } ARRAY /dev/md6 devices=/dev/sdk,/dev/sdl } } The problem is that the following proccesses are using a lot of cpu } time. } } md1_raid1 } md1_resync } ...... } md6_raid1 } md6_resync } } Here is a sample of the uptime command } } 17:54:16 up 5:48, 2 users, load average: 5.02, 5.05, 5.26 What is the CPU load? The above does not reflect CPU usage. I beleve it reports on average outsanding IOs. With 6 arrays syncing, I would have expected 6 or 12. Run "top", or "sar -u 10 10" to see CPU usage. Guy } } Does anybody have an idea what is the problem? Thank a lot in advance } } Best regards } Gilberto Diaz } - } 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 - 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
