[Gluster-users] Extremely low performance - am I doing something wrong?

2019-07-03 Thread Vladimir Melnik
Dear colleagues, I have a lab with a bunch of virtual machines (the virtualization is provided by KVM) running on the same physical host. 4 of these VMs are working as a GlusterFS cluster and there's one more VM that works as a client. I'll specify all the packages' versions in the ending of this

Re: [Gluster-users] Extremely low performance - am I doing something wrong?

2019-07-03 Thread Vladimir Melnik
:41AM +0300, Vladimir Melnik wrote: > Dear colleagues, > > I have a lab with a bunch of virtual machines (the virtualization is > provided by KVM) running on the same physical host. 4 of these VMs are > working as a GlusterFS cluster and there's one more VM that works as a > cl

Re: [Gluster-users] Extremely low performance - am I doing somethingwrong?

2019-07-03 Thread Vladimir Melnik
> > Best Regards, > Strahil NikolovOn Jul 3, 2019 11:39, Vladimir Melnik > wrote: > > > > Dear colleagues, > > > > I have a lab with a bunch of virtual machines (the virtualization is > > provided by KVM) running on the same physical host. 4 of these VMs are

Re: [Gluster-users] Extremely low performance - am I doing somethingwrong?

2019-07-03 Thread Vladimir Melnik
th a fresh replica volume with 'virt' group applied ? > Best Regards,Strahil Nikolov > В сряда, 3 юли 2019 г., 19:18:18 ч. Гринуич+3, Vladimir Melnik > написа: > > Thank you, it helped a little: > > $ for i in {1..5}; do { dd if=/dev/zero of=/mnt/glusterfs1/test.tmp b

Re: [Gluster-users] Extremely low performance - am I doing somethingwrong?

2019-07-03 Thread Vladimir Melnik
SSDs and... 2MB/s on replica 3 volume on HDDs. > Something to look at next week. > > > > -- > Dmitry Filonov > Linux Administrator > SBGrid Core | Harvard Medical School > 250 Longwood Ave, SGM-114 > Boston, MA 02115 > > > On Wed, Jul 3, 2019 at 12:18 PM Vla

Re: [Gluster-users] Extremely low performance - am I doing somethingwrong?

2019-07-03 Thread Vladimir Melnik
OK, I tweaked the virtualization parameters and now I have ~10 Gbit/s between all the nodes. $ iperf3 -c 10.13.1.16 Connecting to host 10.13.1.16, port 5201 [ 4] local 10.13.1.17 port 47242 connected to 10.13.1.16 port 5201 [ ID] Interval Transfer Bandwidth Retr Cwnd [ 4]

Re: [Gluster-users] Extremely low performance - am I doing somethingwrong?

2019-07-04 Thread Vladimir Melnik
think , it'related to the sync type of oflag. > Do you have a raid controller on each brick , to immediate take the data into > the cache ? > > Best Regards, > Strahil NikolovOn Jul 3, 2019 23:15, Vladimir Melnik > wrote: > > > > Indeed, I wouldn't be surprised