Hi,
I attached one 500G block device to the vm, and test it in vm use
"dd if=/dev/zero of=myfile bs=1M count=1024" ,
Then I got a average io speed about 31MB/s. I thought that i
should have got 100MB/s，
cause my vm hypervisor has 1G nic and osd host has 10G nic。
Did i got a wrong result? how can i make it faster?
Your sincerely,
Michael.
[root@storage1 ~]# ceph -w
2014-03-16 17:24:44.596903 mon.0 [INF] pgmap v2245: 1127 pgs: 1127
active+clean; 8758 MB data, 100 GB used, 27749 GB / 29340 GB avail; 5059
kB/s wr, 1 op/s
2014-03-16 17:24:45.742589 mon.0 [INF] pgmap v2246: 1127 pgs: 1127
active+clean; 8826 MB data, 100 GB used, 27749 GB / 29340 GB avail; 21390
kB/s wr, 7 op/s
2014-03-16 17:24:46.864936 mon.0 [INF] pgmap v2247: 1127 pgs: 1127
active+clean; 8838 MB data, 100 GB used, 27749 GB / 29340 GB avail; 36789
kB/s wr, 13 op/s
2014-03-16 17:24:49.578711 mon.0 [INF] pgmap v2248: 1127 pgs: 1127
active+clean; 8869 MB data, 100 GB used, 27749 GB / 29340 GB avail; 11404
kB/s wr, 3 op/s
2014-03-16 17:24:50.824619 mon.0 [INF] pgmap v2249: 1127 pgs: 1127
active+clean; 8928 MB data, 100 GB used, 27749 GB / 29340 GB avail; 22972
kB/s wr, 7 op/s
2014-03-16 17:24:51.980126 mon.0 [INF] pgmap v2250: 1127 pgs: 1127
active+clean; 8933 MB data, 100 GB used, 27749 GB / 29340 GB avail; 28408
kB/s wr, 10 op/s
2014-03-16 17:24:54.603830 mon.0 [INF] pgmap v2251: 1127 pgs: 1127
active+clean; 8954 MB data, 100 GB used, 27749 GB / 29340 GB avail; 7090
kB/s wr, 2 op/s
2014-03-16 17:24:55.671644 mon.0 [INF] pgmap v2252: 1127 pgs: 1127
active+clean; 9034 MB data, 100 GB used, 27749 GB / 29340 GB avail; 27465
kB/s wr, 9 op/s
2014-03-16 17:24:57.057567 mon.0 [INF] pgmap v2253: 1127 pgs: 1127
active+clean; 9041 MB data, 100 GB used, 27749 GB / 29340 GB avail; 39638
kB/s wr, 13 op/s
2014-03-16 17:24:59.603449 mon.0 [INF] pgmap v2254: 1127 pgs: 1127
active+clean; 9057 MB data, 100 GB used, 27749 GB / 29340 GB avail; 6019
kB/s wr, 2 op/s
2014-03-16 17:25:00.671065 mon.0 [INF] pgmap v2255: 1127 pgs: 1127
active+clean; 9138 MB data, 100 GB used, 27749 GB / 29340 GB avail; 25646
kB/s wr, 9 op/s
2014-03-16 17:25:01.860269 mon.0 [INF] pgmap v2256: 1127 pgs: 1127
active+clean; 9146 MB data, 100 GB used, 27749 GB / 29340 GB avail; 40427
kB/s wr, 14 op/s
2014-03-16 17:25:04.561468 mon.0 [INF] pgmap v2257: 1127 pgs: 1127
active+clean; 9162 MB data, 100 GB used, 27749 GB / 29340 GB avail; 6298
kB/s wr, 2 op/s
2014-03-16 17:25:05.662565 mon.0 [INF] pgmap v2258: 1127 pgs: 1127
active+clean; 9274 MB data, 101 GB used, 27748 GB / 29340 GB avail; 34520
kB/s wr, 12 op/s
2014-03-16 17:25:06.851644 mon.0 [INF] pgmap v2259: 1127 pgs: 1127
active+clean; 9286 MB data, 101 GB used, 27748 GB / 29340 GB avail; 56598
kB/s wr, 19 op/s
2014-03-16 17:25:09.597428 mon.0 [INF] pgmap v2260: 1127 pgs: 1127
active+clean; 9322 MB data, 101 GB used, 27748 GB / 29340 GB avail; 12426
kB/s wr, 5 op/s
2014-03-16 17:25:10.765610 mon.0 [INF] pgmap v2261: 1127 pgs: 1127
active+clean; 9392 MB data, 101 GB used, 27748 GB / 29340 GB avail; 27569
kB/s wr, 13 op/s
2014-03-16 17:25:11.943055 mon.0 [INF] pgmap v2262: 1127 pgs: 1127
active+clean; 9392 MB data, 101 GB used, 27748 GB / 29340 GB avail; 31581
kB/s wr, 16 op/s
[root@storage1 ~]# ceph -s
cluster 3429fd17-4a92-4d3b-a7fa-04adedb0da82
health HEALTH_OK
monmap e1: 1 mons at {storage1=193.168.1.100:6789/0}, election epoch
1, quorum 0 storage1
osdmap e245: 16 osds: 16 up, 16 in
pgmap v2273: 1127 pgs, 4 pools, 9393 MB data, 3607 objects
101 GB used, 27748 GB / 29340 GB avail
1127 active+clean
[root@storage1 ~]# ceph osd tree
# id weight type name up/down reweight
-1 16 root default
-2 16 host storage1
0 1 osd.0 up 1
1 1 osd.1 up 1
2 1 osd.2 up 1
3 1 osd.3 up 1
4 1 osd.4 up 1
5 1 osd.5 up 1
6 1 osd.6 up 1
7 1 osd.7 up 1
8 1 osd.8 up 1
9 1 osd.9 up 1
10 1 osd.10 up 1
11 1 osd.11 up 1
12 1 osd.12 up 1
13 1 osd.13 up 1
14 1 osd.14 up 1
15 1 osd.15 up 1
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