Hi, I know that Ceph can re-export nfs protocol. So I want to compare the speed differences between Ceph and Gluster. I use Linux command "dd" to make a write test. Here is the command I used. "dd if=/dev/zero of=/mnt/test1.dbf bs=8k count=100000" The hardware conditions are the same. I set Gluster as 20 servers and Ceph as 1 MDS, 19 OSDes and 1 MON(MDS and Mon are on the same server). I have one physical server as a client. The results are as follows: 1. with oflag=dsync Gluster=166KB/s Ceph=174KB/s 2. without oflag=dsync Gluster=39.3MB/s Ceph=46.6MB/s This confuses me. Because I thought Ceph should be a lot faster than Gluster. But it seems not according the results. Could someone tell me if I did something wrong or the result is OK? Thanks in advance! -- Best Regards, Sylar Shen -- 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
