hi,all Recently, we test the samba read performance,and find something strange. there are two groups to test: the cluster include 1 MON and 1 MDS,and 1) 2 OSDs on the same machine 2) 2 OSDs on the different machine when we use samba to test read, in the first condition it is about 110MB/s, but in the second condition it is only 60MB/s. we anlysed it from the debug log /var/log/ceph/osd.*.log, in the condition 1), the OSD spends about 7~8ms (from sending osd_op_reply to getting the next client read request) but in 2) we spends about 12~14ms. we can not find anything else that would result in the different read performance between the two conditions. so if you, the developers have tested it? is it related to the connection(session) type between client and OSD? now the clients only have the short connection with OSD. thanks! -- 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
