Hi Alexandre,
Yeah we are using filestore for the moment with luminous. With regards to client, I tried both jewel and luminous librbd versions against the luminous cluster - similar results.
I am running fio on a physical machine with fio rbd engine. This is a snippet of the fio config for the runs (the complete jobfile adds variations of read/write/block size/iodepth).
[global]
ioengine=rbd
clientname=cinder-volume
pool=rbd-bronze
invalidate=1
ramp_time=5
runtime=30
time_based
direct=1
[write-rbd1-4k-depth1]
rbdname=rbd-tester-fio
bs=4k
iodepth=1
rw=write
stonewall
[write-rbd2-4k-depth16]
rbdname=rbd-tester-fio-2
bs=4k
iodepth=16
rw=write
stonewall
Raf
On 20 September 2017 at 16:43, Alexandre DERUMIER <aderumier@xxxxxxxxx> wrote:
Hi
so, you use also filestore on luminous ?
do you have also upgraded librbd on client ? (are you benching inside a qemu machine ? or directly with fio-rbd ?)
(I'm going to do a lot of benchmarks in coming week, I'll post results on mailing soon.)
----- Mail original -----
De: "Rafael Lopez" <rafael.lopez@xxxxxxxxxx>
À: "ceph-users" <ceph-users@xxxxxxxxxxxxxx>
Envoyé: Mercredi 20 Septembre 2017 08:17:23
Objet: luminous vs jewel rbd performance
______________________________
hey guys.
wondering if anyone else has done some solid benchmarking of jewel vs luminous, in particular on the same cluster that has been upgraded (same cluster, client and config).
we have recently upgraded a cluster from 10.2.9 to 12.2.0, and unfortunately i only captured results from a single fio (librbd) run with a few jobs in it before upgrading. i have run the same fio jobfile many times at different times of the day since upgrading, and been unable to produce a close match to the pre-upgrade (jewel) run from the same client. one particular job is significantly slower (4M block size, iodepth=1, seq read), up to 10x in one run.
i realise i havent supplied much detail and it could be dozens of things, but i just wanted to see if anyone else had done more quantitative benchmarking or had similar experiences. keep in mind all we changed was daemons were restarted to use luminous code, everything else exactly the same. granted it is possible that some/all osds had some runtime config injected that differs from now, but i'm fairly confident this is not the case as they were recently restarted (on jewel code) after OS upgrades.
cheers,
Raf
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Rafael Lopez
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Monash University eResearch Centre
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