Hello Robert, I did not make any changes, so I'm still using the prio queue. Regards
Le lun. 10 juin 2019 à 17:44, Robert LeBlanc <rob...@leblancnet.us> a écrit : > I'm glad it's working, to be clear did you use wpq, or is it still the > prio queue? > > Sent from a mobile device, please excuse any typos. > > On Mon, Jun 10, 2019, 4:45 AM BASSAGET Cédric < > cedric.bassaget...@gmail.com> wrote: > >> an update from 12.2.9 to 12.2.12 seems to have fixed the problem ! >> >> Le lun. 10 juin 2019 à 12:25, BASSAGET Cédric < >> cedric.bassaget...@gmail.com> a écrit : >> >>> Hi Robert, >>> Before doing anything on my prod env, I generate r/w on ceph cluster >>> using fio . >>> On my newest cluster, release 12.2.12, I did not manage to get >>> the (REQUEST_SLOW) warning, even if my OSD disk usage goes above 95% (fio >>> ran from 4 diffrent hosts) >>> >>> On my prod cluster, release 12.2.9, as soon as I run fio on a single >>> host, I see a lot of REQUEST_SLOW warninr gmessages, but "iostat -xd 1" >>> does not show me a usage more that 5-10% on disks... >>> >>> Le lun. 10 juin 2019 à 10:12, Robert LeBlanc <rob...@leblancnet.us> a >>> écrit : >>> >>>> On Mon, Jun 10, 2019 at 1:00 AM BASSAGET Cédric < >>>> cedric.bassaget...@gmail.com> wrote: >>>> >>>>> Hello Robert, >>>>> My disks did not reach 100% on the last warning, they climb to 70-80% >>>>> usage. But I see rrqm / wrqm counters increasing... >>>>> >>>>> Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s >>>>> avgrq-sz avgqu-sz await r_await w_await svctm %util >>>>> >>>>> sda 0.00 4.00 0.00 16.00 0.00 104.00 >>>>> 13.00 0.00 0.00 0.00 0.00 0.00 0.00 >>>>> sdb 0.00 2.00 1.00 3456.00 8.00 25996.00 >>>>> 15.04 5.76 1.67 0.00 1.67 0.03 9.20 >>>>> sdd 4.00 0.00 41462.00 1119.00 331272.00 7996.00 >>>>> 15.94 19.89 0.47 0.48 0.21 0.02 66.00 >>>>> >>>>> dm-0 0.00 0.00 6825.00 503.00 330856.00 7996.00 >>>>> 92.48 4.00 0.55 0.56 0.30 0.09 66.80 >>>>> dm-1 0.00 0.00 1.00 1129.00 8.00 25996.00 >>>>> 46.02 1.03 0.91 0.00 0.91 0.09 10.00 >>>>> >>>>> >>>>> sda is my system disk (SAMSUNG MZILS480HEGR/007 GXL0), sdb and sdd >>>>> are my OSDs >>>>> >>>>> would "osd op queue = wpq" help in this case ? >>>>> Regards >>>>> >>>> >>>> Your disk times look okay, just a lot more unbalanced than I would >>>> expect. I'd give wpq a try, I use it all the time, just be sure to also >>>> include the op_cutoff setting too or it doesn't have much effect. Let me >>>> know how it goes. >>>> ---------------- >>>> Robert LeBlanc >>>> PGP Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA62 B9F1 >>>> >>>
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