Am 29.05.2012 05:54, schrieb Alexandre DERUMIER: >>> This happens with ext4 or btrfs too. > > maybe this is related to io scheduler ? > did you have compared cfq,deadline,noop scheduler ? This is something i consider for performance tuning later on, when everything is running smooth. Right now i'm using CFQ with the tuned IBM settings (which proxmox uses too). Here are some outputs of basic fio Tests running on 3.4 and 3.0. 3.4: http://pastebin.com/raw.php?i=6GEKsCYH 3.0: http://pastebin.com/raw.php?i=FU4AtUck strangely 3.4 is faster but this corresponds to the fact that the normal Disk I/O is working fine with 3.4 It's just ceph which isn't working fine. > also what's is your sas/sata controller ? Intel onboard SATA controller in this testsetup. Stefan -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
