hi i've done some performance tests on a small system. HW: * Supermicro X7SPA-HF (with IMPI and KVMoverIP integrated)) * Atom D510 1.6GHz DualCore and HT * WD RE3 500GB 7200umin disks * 4GB RAM SW: * Debian 5.0 "Lenny" * Kernel 2.6.32 (backports.org) * ceph/unstable * ceph-client-standalone/unstable-backport values are MB/s. all tests are local. dbench 1 results: * 1 disk, btrfs: 115 * 2 disks, btrfs data/metadata raid0: 115 * 1 osd/disk, 1 mds, 1 mon: 7 * 2 osd/disk, 1 mds, 1mon: 6.2117 * 1 disk, btrfs, samba: 14.02 * 2 disks, btrfs data/metadata raid0, samba: 13.781 dbench 10 results: * 1 disk, btrfs: 271.724 * 2 disks, btrfs data/metadata raid0: 270.043 * 1 osd/disk, 1 mds, 1 mon: - * 2 osd/disk, 1 mds, 1mon: 12.1862 * 1 disk, btrfs, samba: 20.22 * 2 disks, btfs data/metadata raid0, samba: 20.26 dd bs=1M count=8192 if=/dev/zero * 1 disk, btrfs: 126 * 2 disks, btrfs data/metadata raid0: 271 * 1 osd/disk, 1 mds, 1 mon: - * 2 osd/disk, 1 mds, 1mon: 51.2 * 1 disk, btrfs, samba: 95.2 * 2 disks, btrfs data/metadata raid0, samba: 85.9 will add a AOC-USAS-H8iR (LSI) RAID card to the mix if i get the cables needed. i'm a bit suprised about the low rates of ceph. i'll try to to the same tests on a more powerfull machine. - Thomas -- 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