Are you running fio against a sparse file, prepopulated file, or a raw device?
Warren From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of scott_tan...@yahoo.com Sent: Thursday, August 20, 2015 3:48 AM To: ceph-users <ceph-users@lists.ceph.com> Cc: liuxy666 <liuxy...@yahoo.com> Subject: [ceph-users] PCIE-SSD OSD bottom performance issue dear ALL: I used PCIE-SSD to OSD disk . But I found it very bottom performance. I have two hosts, each host 1 PCIE-SSD,so i create two osd by PCIE-SSD. ID WEIGHT TYPE NAME UP/DOWN REWEIGHT PRIMARY-AFFINITY -1 0.35999 root default -2 0.17999 host tds_node03 0 0.17999 osd.0 up 1.00000 1.00000 -3 0.17999 host tds_node04 1 0.17999 osd.1 up 1.00000 1.00000 I create pool and rbd device. I use fio test 8K randrw(70%) in rbd device,the result is only 1W IOPS, I have tried many osd thread parameters, but not effect. But i tested 8K randrw(70%) in single PCIE-SSD, it has 10W IOPS. Is there any way to improve the PCIE-SSD OSD performance? ________________________________ scott_tan...@yahoo.com<mailto:scott_tan...@yahoo.com>
_______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
