On 26/03/2015, at 09.05, 池信泽 <xmdx...@gmail.com> wrote:
> hi，ceph:
>
> Currently, the command ”ceph --admin-daemon
> /var/run/ceph/ceph-osd.0.asok dump_historic_ops“ may return as below:
>
> { "description": "osd_op(client.4436.1:11617
> rb.0.1153.6b8b4567.000000000192 [] 2.8eb4757c ondisk+write e92)",
> "received_at": "2015-03-25 19:41:47.146145",
> "age": "2.186521",
> "duration": "1.237882",
> "type_data": [
> "commit sent; apply or cleanup",
> { "client": "client.4436",
> "tid": 11617},
> [
> { "time": "2015-03-25 19:41:47.150803",
> "event": "event1"},
> { "time": "2015-03-25 19:41:47.150873",
> "event": "event2"},
> { "time": "2015-03-25 19:41:47.150895",
> "event": "event3"},
> { "time": "2015-03-25 19:41:48.384027",
> "event": "event4"}]]}
Seems like JSON format
So consider doing your custom conversion by some means of CLI
convert json format to string> > I think this message is not so suitable for grep log or using > mapreduce for data statistics. Such as, I want to know > the write request avg latency for each rbd everyday. If we could > output the all latency in just one line, it would be very easy to > achieve it. > > Such as, the output log maybe something like this: > 2015-03-26 03:30:53.859759 osd=osd.0 pg=2.11 op=(client.4436.1:11617 > rb.0.1153.6b8b4567.000000000192 [] 2.8eb4757c ondisk+write e92) > received_at=1427355253 age=2.186521 duration=1.237882 tid=11617 > client=client.4436 event1=20ms event2=300ms event3=400ms event4=100ms. > > The above: > > duration means: the time between (reply_to_client_stamp - > request_received_stamp) > event1 means: the time between (the event1_stamp - request_received_stamp) > ... > event4 means: the time between (the event4_stamp - request_received_stamp) > > Now, If we output the every log as above. it would be every easy to > know the write request avg latency for each rbd everyday. > Or if I use grep it is more easy to find out which stage is the bottleneck. > > -- > Regards, > xinze > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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