Re: [ceph-users] Low latency values

2014-05-09 Thread Gregory Farnum
On Fri, May 9, 2014 at 10:49 AM, Dan Ryder (daryder) wrote: > Thanks Greg, > > That makes sense. > > Can you also confirm that latency values are always in seconds? > I haven't seen any documentation for it and want to be sure before I say it > is one way or the other. I believe that's the case,

Re: [ceph-users] Low latency values

2014-05-09 Thread Dan Ryder (daryder)
, May 09, 2014 1:42 PM To: Dan Ryder (daryder) Cc: Haomai Wang; ceph-us...@ceph.com Subject: Re: [ceph-users] Low latency values The recovery_state "latencies" are all about how long your PGs are in various states of recovery; they're not per-operation latencies. 3 days still seem

Re: [ceph-users] Low latency values

2014-05-09 Thread Gregory Farnum
cy should be anywhere > near that high. 290700 seconds > 3 days. > > 86047405.517876000 / 296 = 290700.694317 seconds? > > 53489945.22253 / 240 = 222874.771761 seconds? > > Thanks, > Dan > > -Original Message- > From: Haomai Wang [mailto:haomaiw...@gmail.com] &

Re: [ceph-users] Low latency values

2014-05-09 Thread Dan Ryder (daryder)
iginal Message- From: Haomai Wang [mailto:haomaiw...@gmail.com] Sent: Friday, May 09, 2014 12:29 PM To: Dan Ryder (daryder) Cc: ceph-us...@ceph.com Subject: Re: [ceph-users] Low latency values yes On Sat, May 10, 2014 at 12:19 AM, Dan Ryder (daryder) wrote: > Thanks Haomai, > >

Re: [ceph-users] Low latency values

2014-05-09 Thread Haomai Wang
; To: Dan Ryder (daryder) > Cc: ceph-us...@ceph.com > Subject: Re: [ceph-users] Low latency values > > 178/184229=0.00097 s = 0.97ms > > On Fri, May 9, 2014 at 10:49 PM, Dan Ryder (daryder) > wrote: >> Hi, >> >> >> >> I’m seeing really low latency

Re: [ceph-users] Low latency values

2014-05-09 Thread Dan Ryder (daryder)
Thanks Haomai, So are all latency values calculated in seconds? Dan -Original Message- From: Haomai Wang [mailto:haomaiw...@gmail.com] Sent: Friday, May 09, 2014 11:20 AM To: Dan Ryder (daryder) Cc: ceph-us...@ceph.com Subject: Re: [ceph-users] Low latency values 178/184229=0.00097 s

Re: [ceph-users] Low latency values

2014-05-09 Thread Haomai Wang
178/184229=0.00097 s = 0.97ms On Fri, May 9, 2014 at 10:49 PM, Dan Ryder (daryder) wrote: > Hi, > > > > I’m seeing really low latency values, to the extent that they don’t seem > realistic. > > > > Snippet from the latest perf dump for this OSD: > > > > "op_r_latency": { "avgcount": 184229, > >

[ceph-users] Low latency values

2014-05-09 Thread Dan Ryder (daryder)
Hi, I'm seeing really low latency values, to the extent that they don't seem realistic. Snippet from the latest perf dump for this OSD: "op_r_latency": { "avgcount": 184229, "sum": 178.07771}, Long run avg = 178.07771/184229 = 0.00097 ms? Is it correct that latency values have m