Hi Davide,
Can you please share the block hosting volume configuration?
Also, more details about the kernel and tcmu-runner versions could help in understanding the problem better.
Thanks,
Vijay
On Tue, Nov 6, 2018 at 6:16 AM Davide Obbi <davide.obbi@xxxxxxxxxxx> wrote:
_______________________________________________Hi,i am testing gluster-block and i am wondering if someone has used it and have some feedback regarding its performance.. just to set some expectations... for example:- i have deployed a block volume using heketi on a 3 nodes gluster4.1 cluster. it's a replica3 volume.- i have mounted via iscsi using multipath config suggested, created vg/lv and put xfs on it- all done without touching any volume setting or customizing xfs parameters etc..- all baremetal running on 10Gb, gluster has a single block device, SSD in use by heketiso i tried a dd and i get a 4.7 MB/s?- on the gluster nodes i have in write ~200iops, ~15MB/s, 75% util steady and spiky await time up to 100ms alternating between the servers. CPUs are mostly idle but there is some waiting...- Glusterd and fsd utilization is below 1%The thing is that a gluster fuse mount on same platform does not have this slowness so there must be something wrong with my understanding of gluster-block?
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