[ovirt-users] Re: oVirt Performance (Horrific)
Saw some people asking for profile info. So I had started a migration from a 6TB WDGold 2+1arb replicated gluster to a 1TB samsung ssd 2+1 rep gluster and it's been running a while for a 100GB file thin provisioned with like 28GB actually used. Here is the profile info. I started the profiler like 5 minutes ago. The migration had been running for like 30minutes: gluster volume profile gv2 info Brick: 10.30.30.122:/gluster_bricks/gv2/brick - Cumulative Stats: Block Size:256b+ 512b+1024b+ No. of Reads: 1189 812 No. of Writes:4 3245 883 Block Size: 2048b+4096b+8192b+ No. of Reads: 1020 2 No. of Writes: 1087312228124080 Block Size: 16384b+ 32768b+ 65536b+ No. of Reads:0 152 No. of Writes: 5188 3617 5532 Block Size: 131072b+ No. of Reads:70191 No. of Writes: 634192 %-latency Avg-latency Min-Latency Max-Latency No. of calls Fop - --- --- --- 0.00 0.00 us 0.00 us 0.00 us 2 FORGET 0.00 0.00 us 0.00 us 0.00 us202 RELEASE 0.00 0.00 us 0.00 us 0.00 us 1297 RELEASEDIR 0.00 14.50 us 9.00 us 20.00 us 4 READDIR 0.00 38.00 us 9.00 us 120.00 us 7GETXATTR 0.00 66.00 us 34.00 us 128.00 us 6OPEN 0.00 137.25 us 52.00 us 195.00 us 4 SETATTR 0.00 23.19 us 11.00 us 46.00 us 26 INODELK 0.00 41.58 us 18.00 us 79.00 us 24 OPENDIR 0.00 166.70 us 15.00 us 775.00 us 27READDIRP 0.01 135.29 us 12.00 us 11695.00 us221 STATFS 0.01 176.54 us 22.00 us 22944.00 us364 FSTAT 0.02 626.21 us 13.00 us 17308.00 us168STAT 0.09 834.84 us 9.00 us 34337.00 us607 LOOKUP 0.73 146.18 us 6.00 us 52255.00 us 29329FINODELK 1.03 298.20 us 42.00 us 43711.00 us 20204FXATTROP 15.388903.40 us 213.00 us 213832.00 us 10102 WRITE 39.14 26796.37 us 222.00 us 122696.00 us 8538READ 43.59 39536.79 us 259.00 us 183630.00 us 6446 FSYNC Duration: 15078 seconds Data Read: 9207377205 bytes Data Written: 86214017762 bytes Interval 2 Stats: Block Size:256b+ 512b+1024b+ No. of Reads: 17 0 0 No. of Writes:043 7 Block Size: 2048b+4096b+8192b+ No. of Reads:0 7 0 No. of Writes: 16 1881 1010 Block Size: 16384b+ 32768b+ 65536b+ No. of Reads:0 0 6 No. of Writes: 305 586 2359 Block Size: 131072b+ No. of Reads: 7162 No. of Writes: 610 %-latency Avg-latency Min-Latency Max-Latency No. of calls Fop - --- --- --- 0.00 0.00 us 0.00 us 0.00 us 6 RELEASE 0.00 0.00 us 0.00 us 0.00 us 20 RELEASEDIR 0.00 14.50 us 9.00 us 20.00 us 4 READDIR 0.00 38.00 us 9.00 us 120.00 us 7GETXATTR 0.00 66.00 us 34.00 us 128.00 us 6OPEN 0.00 137.25 us 52.00 us 195.00 us 4 SETATTR 0.00 23.19 us 11.00 us 46.00 us 26 INODELK 0.00 40.05 us 18.00 us 79.00 us 20 OPENDIR 0.00 180.33 us 16.00 us 775.00 us 21READDIRP 0.01 181.77 us 12.00 us 11695.00 us149 STATFS 0.01 511.23 us 15.00 us 16954.00 us111
[ovirt-users] Re: oVirt Performance (Horrific)
This kind of helped. It helped on a vm with a single disk nfs mount using windows 10. I tried it on a winserv 2016 and got weird non-responsiveness happening a lot. Kind of surprised by the windows 10 box actually got full speed. 100MBps basically. Way better than 5MBps. Now if I could fix the non-responsiveness.. All these performance posts in here... kinda makes we wonder if anyone has anything organized about how to configure a single setup completely so that it "works". It seems out of the box this stuff doesn't work. I don't even see light down the tunnel. The people that say it's great give no info and the people that say they are having issues with extreme slowness don't appear to get help. Maybe if I look at older threads I'll have more luck finding people satisfied with solutions related to performance. ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/232WWZDFOINZ3RE5GOGDWBTLTXPHEMLN/
[ovirt-users] Re: oVirt Performance (Horrific)
Also I just noticed but the windows resource monitor response times show zero (0) across the board now with the viodiskcache = writeback setting. Not sure if that's accurate. But a notable difference for the notable speed boost. ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/DEIVGHMSMPZ5BYL3WMZUV4UIVRDMRPPR/
[ovirt-users] Re: oVirt Performance (Horrific)
I set my account name to Drew R earlier and it seems to have altered the course of this thread. But anyway. This guy Strahil replied to me (not showing below) and said to try this: Strahil: "Can you try setting the viodiskcache custom property to write back ? Best Regards, Strahil" I cloned the windows 10 vm, set one to use the 8TB WDGold disk and one to use a 6TB WDGold 2+1arb mirror gluster. The 8TB single disk VM ran full speed: 115MBps. When it took 19 minutes prior. The gluster VM is still going as I type this...probably still on track for 19 minutes on a 6.8GB file (~5MBps). 115 is basically maxing the 1GBps ethernet to the remote server I'm reading from for the file copy) And this is taking place INSIDE the VM managed by oVirt. Outside the VM I can achieve expected speeds for the hardware in any direction. I'd test something within the 10Gbps network but it's only oVirt manages devices and they can't even read off each other faster than 5MBps. So that was a great example of how a setting can have effect. So with a VirtIO-SCSI + viodiskcache=write back on a single non-gluster disk I get basically max speed. Otherwise - goat cheese. So how do I fix the gluster performance - through oVirt? (that gluster copy just finished btw - 14 minutes - so maybe a slight improvement) ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/EPASSSA6HXMQDMVUBZQVOSYCXSWGRVK6/
[ovirt-users] Re: oVirt Performance (Horrific)
I expect VM's to be able to write at 200MB or 500MB to the hdd/ssd when using an NFS mount or gluster from inside a VM. But heck, it's not even 10% (20MB or 50MB), it's closer to 2.5%-5% of the speed of the drives. I expect windows services to not timeout due to slow hard drives while booting. I expect a windows vm to boot in less than 6 minutes. I expect to open chrome in less than 1 minute. :) I was hoping for like, at least half speed or quarter speed. I'd be ok with 50MBps or 100MBps. Writing. I think what I was expecting was out of the box it would perform. But there appears to be something we've done wrong, or a tweak we aren't doing. But we can't even run 1 windows vm at something anyone would remotely call "performs very well". Please guide me. Do you have any commands you want me to run? Or tests to do? Do you want a print out or a specific configuration you would like to try? ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/VLWJHKXBR3A4RECSSXKFXBGHW7DLQE2L/
