On 10/27/2014 04:24 PM, Christopher Spearman wrote: > > - What tested with bad performance (Reads ~25-50MB/s - Writes ~25-50MB/s) > * RBD setup as target using LIO > * RBD -> LVM -> LIO target > * RBD -> RAID0/1 -> LIO target > - What tested with good performance (Reads ~700-800MB/s - Writes > ~400-700MB/s) > * RBD on local system, no iSCSI > * Ramdisk (No RBD) -> LIO target > * RBD -> Mounted ext4 -> disk image -> LIO fileio target > * RBD -> Mounted ext4 -> disk image -> loop device -> LIO blockio target > * RBD -> loop device -> LIO target > Hi Christopher, Could you send me the LIO target configs for "RBD setup as target using LIO" and for "RBD -> Mounted ext4 -> disk image -> LIO fileio target" and "RBD -> loop device -> LIO target". If you are using targetcli, just send the /etc/target/saveconfig.json. You can probably find configs for all setups in /etc/target/backup. If you do not have those files anymore can you tell me what settings you used for the storage object attributes (block size, max sectors, optimal sectors, cache, etc), and can you tell me what backing store driver (block or fileio) for the setups above? What tool did you use to test performance and how did you run it? _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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