What are the specs of your nodes? And what specific harddisks are you using? On Fri, May 29, 2020, 18:41 Salsa <salsa@xxxxxxxxxxxxxx> wrote: > I have a 3 hosts, 10 4TB HDDs per host ceph storage set up. I deined a 3 > replica rbd pool and some images and presented them to a Vmware host via > ISCSI, but the write performance is so bad the I managed to freeze a VM > doing a big rsync to a datastore inside ceph and had to reboot it's host > (seems I've filled up Vmware's ISCSI queue). > > Right now I'm getting write latencies from 20ms to 80 ms (per OSD) and > sometimes peaking at 600 ms (per OSD). > Client throughput is giving me around 4 MBs. > > Using a 4MB stripe 1 image I got 1.955..359 B/s inside the VM. > On a 1MB stripe 1 I got 2.323.206 B/s inside the same VM. > > I think the performance is way too slow, much more than should be and that > I can fix this by correcting some configuration. > > Any advices? > > -- > Salsa > > Sent with [ProtonMail](https://protonmail.com) Secure Email. > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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