--------------040903020404050203020000 Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 8bit My apologies, I'm showing how much of a noob I am. Ignore last direct to gluster numbers, as that wasn't really glusterfs. [root@ovirt2 test ~]# mount -t glusterfs ovirt2-ks.test.j2noc.com:/gv1 /mnt/tmp/ [root@ovirt2 test ~]# time dd if=/dev/zero of=/mnt/tmp/testfile2 bs=1M count=1000 oflag=direct 1048576000 bytes (1.0 GB) copied, 65.8596 s, 15.9 MB/s That's more how I expected, it is pointing to glusterfs performance. On 02/11/2016 03:27 PM, Bill James wrote:
don't know if it helps, but I ran a few more tests, all from the same hardware node.
The VM: [root@billjov1 ~]# time dd if=/dev/zero of=/root/testfile bs=1M count=1000 oflag=direct 1048576000 bytes (1.0 GB) copied, 62.5535 s, 16.8 MB/s
Writing directly to gluster volume: [root@ovirt2 test ~]# time dd if=/dev/zero of=/gluster-store/brick1/gv1/testfile bs=1M count=1000 oflag=direct 1048576000 bytes (1.0 GB) copied, 9.92048 s, 106 MB/s
Writing to NFS volume: [root@ovirt2 test ~]# time dd if=/dev/zero of=/mnt/storage/qa/testfile bs=1M count=1000 oflag=direct 1048576000 bytes (1.0 GB) copied, 10.5776 s, 99.1 MB/s
NFS & Gluster are using the same interface. Tests were not run at same time.
This would suggest my problem isn't glusterfs, but the VM performance.
On 02/11/2016 03:13 PM, Bill James wrote:
xml attached.
On 02/11/2016 12:28 PM, Nir Soffer wrote:
On Thu, Feb 11, 2016 at 8:27 PM, Bill James <bill.james@j2.com> wrote:
thank you for the reply.
We setup gluster using the names associated with NIC 2 IP. Brick1: ovirt1-ks.test.j2noc.com:/gluster-store/brick1/gv1 Brick2: ovirt2-ks.test.j2noc.com:/gluster-store/brick1/gv1 Brick3: ovirt3-ks.test.j2noc.com:/gluster-store/brick1/gv1
That's NIC 2's IP. Using 'iftop -i eno2 -L 5 -t' :
dd if=/dev/zero of=/root/testfile bs=1M count=1000 oflag=direct 1048576000 bytes (1.0 GB) copied, 68.0714 s, 15.4 MB/s Can you share the xml of this vm? You can find it in vdsm log, at the time you start the vm.
Or you can do (on the host):
# virsh virsh # list (username: vdsm@ovirt password: shibboleth) virsh # dumpxml vm-id
Peak rate (sent/received/total): 281Mb 5.36Mb 282Mb Cumulative (sent/received/total): 1.96GB 14.6MB 1.97GB
gluster volume info gv1: Options Reconfigured: performance.write-behind-window-size: 4MB performance.readdir-ahead: on performance.cache-size: 1GB performance.write-behind: off
performance.write-behind: off didn't help. Neither did any other changes I've tried.
There is no VM traffic on this VM right now except my test.
On Thu, Feb 11, 2016 at 2:42 AM, Ravishankar N <ravishankar@redhat.com> wrote:
+gluster-users
Does disabling 'performance.write-behind' give a better throughput?
On 02/10/2016 11:06 PM, Bill James wrote: > I'm setting up a ovirt cluster using glusterfs and noticing not > stellar > performance. > Maybe my setup could use some adjustments? > > 3 hardware nodes running centos7.2, glusterfs 3.7.6.1, ovirt > 3.6.2.6-1. > Each node has 8 spindles configured in 1 array which is split > using LVM > with one logical volume for system and one for gluster. > They each have 4 NICs, > NIC1 = ovirtmgmt > NIC2 = gluster (1GbE) How do you ensure that gluster trafic is using this nic?
> NIC3 = VM traffic How do you ensure that vm trafic is using this nic?
> I tried with default glusterfs settings And did you find any difference?
> and also with: > performance.cache-size: 1GB > performance.readdir-ahead: on > performance.write-behind-window-size: 4MB > > [root@ovirt3 test scripts]# gluster volume info gv1 > > Volume Name: gv1 > Type: Replicate > Volume ID: 71afc35b-09d7-4384-ab22-57d032a0f1a2 > Status: Started > Number of Bricks: 1 x 3 = 3 > Transport-type: tcp > Bricks: > Brick1: ovirt1-ks.test.j2noc.com:/gluster-store/brick1/gv1 > Brick2: ovirt2-ks.test.j2noc.com:/gluster-store/brick1/gv1 > Brick3: ovirt3-ks.test.j2noc.com:/gluster-store/brick1/gv1 > Options Reconfigured: > performance.cache-size: 1GB > performance.readdir-ahead: on > performance.write-behind-window-size: 4MB > > > Using simple dd test on VM in ovirt: > dd if=/dev/zero of=/root/testfile bs=1G count=1 oflag=direct block size of 1G?!
Try 1M (our default for storage operations)
> 1073741824 bytes (1.1 GB) copied, 65.9337 s, 16.3 MB/s > > Another VM not in ovirt using nfs: > dd if=/dev/zero of=/root/testfile bs=1G count=1 oflag=direct > 1073741824 bytes (1.1 GB) copied, 27.0079 s, 39.8 MB/s > > > Is that expected or is there a better way to set it up to get > better > performance? Adding Niels for advice.
> This email, its contents and .... Please avoid this, this is a public mailing list, everything you write here is public.
Nir I'll have to look into how to remove this sig for this mailing
On 02/10/2016 11:55 PM, Nir Soffer wrote: list....
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All rights reserved. eFax, eVoice, Campaigner, FuseMail, KeepItSafe, and Onebox are registered trademarks of j2 Global, Inc. and its affiliates. --------------040903020404050203020000 Content-Type: text/html; charset="windows-1252" Content-Transfer-Encoding: 8bit <html> <head> <meta content="text/html; charset=windows-1252" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> My apologies, I'm showing how much of a noob I am.<br> Ignore last direct to gluster numbers, as that wasn't really glusterfs.<br> <br> <br> [root@ovirt2 test ~]# mount -t glusterfs ovirt2-ks.test.j2noc.com:/gv1 /mnt/tmp/<br> [root@ovirt2 test ~]# time dd if=/dev/zero of=/mnt/tmp/testfile2 bs=1M count=1000 oflag=direct<br> 1048576000 bytes (1.0 GB) copied, 65.8596 s, 15.9 MB/s<br> <br> That's more how I expected, it is pointing to glusterfs performance.<br> <br> <br> <br> <div class="moz-cite-prefix">On 02/11/2016 03:27 PM, Bill James wrote:<br> </div> <blockquote cite="mid:56BD18D7.8080909@j2.com" type="cite"> <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> don't know if it helps, but I ran a few more tests, all from the same hardware node.<br> <br> The VM:<br> [root@billjov1 ~]# time dd if=/dev/zero of=/root/testfile bs=1M count=1000 oflag=direct<br> 1048576000 bytes (1.0 GB) copied, 62.5535 s, 16.8 MB/s<br> <br> Writing directly to gluster volume:<br> [root@ovirt2 test ~]# time dd if=/dev/zero of=/gluster-store/brick1/gv1/testfile bs=1M count=1000 oflag=direct<br> 1048576000 bytes (1.0 GB) copied, 9.92048 s, 106 MB/s<br> <br> <br> Writing to NFS volume:<br> [root@ovirt2 test ~]# time dd if=/dev/zero of=/mnt/storage/qa/testfile bs=1M count=1000 oflag=direct<br> 1048576000 bytes (1.0 GB) copied, 10.5776 s, 99.1 MB/s<br> <br> NFS & Gluster are using the same interface. Tests were not run at same time.<br> <br> This would suggest my problem isn't glusterfs, but the VM performance.<br> <br> <br> <br> <div class="moz-cite-prefix">On 02/11/2016 03:13 PM, Bill James wrote:<br> </div> <blockquote cite="mid:56BD1589.8090506@j2.com" type="cite">xml attached. <br> <br> <br> On 02/11/2016 12:28 PM, Nir Soffer wrote: <br> <blockquote type="cite">On Thu, Feb 11, 2016 at 8:27 PM, Bill James <a moz-do-not-send="true" class="moz-txt-link-rfc2396E" href="mailto:bill.james@j2.com"><bill.james@j2.com></a> wrote: <br> <blockquote type="cite">thank you for the reply. <br> <br> We setup gluster using the names associated with NIC 2 IP. <br> Brick1: ovirt1-ks.test.j2noc.com:/gluster-store/brick1/gv1 <br> Brick2: ovirt2-ks.test.j2noc.com:/gluster-store/brick1/gv1 <br> Brick3: ovirt3-ks.test.j2noc.com:/gluster-store/brick1/gv1 <br> <br> That's NIC 2's IP. <br> Using 'iftop -i eno2 -L 5 -t' : <br> <br> dd if=/dev/zero of=/root/testfile bs=1M count=1000 oflag=direct <br> 1048576000 bytes (1.0 GB) copied, 68.0714 s, 15.4 MB/s <br> </blockquote> Can you share the xml of this vm? You can find it in vdsm log, <br> at the time you start the vm. <br> <br> Or you can do (on the host): <br> <br> # virsh <br> virsh # list <br> (username: vdsm@ovirt password: shibboleth) <br> virsh # dumpxml vm-id <br> <br> <blockquote type="cite">Peak rate (sent/received/total): 281Mb 5.36Mb <br> 282Mb <br> Cumulative (sent/received/total): 1.96GB 14.6MB <br> 1.97GB <br> <br> gluster volume info gv1: <br> Options Reconfigured: <br> performance.write-behind-window-size: 4MB <br> performance.readdir-ahead: on <br> performance.cache-size: 1GB <br> performance.write-behind: off <br> <br> performance.write-behind: off didn't help. <br> Neither did any other changes I've tried. <br> <br> <br> There is no VM traffic on this VM right now except my test. <br> <br> <br> <br> On 02/10/2016 11:55 PM, Nir Soffer wrote: <br> <blockquote type="cite">On Thu, Feb 11, 2016 at 2:42 AM, Ravishankar N <a moz-do-not-send="true" class="moz-txt-link-rfc2396E" href="mailto:ravishankar@redhat.com"><ravishankar@redhat.com></a> <br> wrote: <br> <blockquote type="cite">+gluster-users <br> <br> Does disabling 'performance.write-behind' give a better throughput? <br> <br> <br> <br> On 02/10/2016 11:06 PM, Bill James wrote: <br> <blockquote type="cite">I'm setting up a ovirt cluster using glusterfs and noticing not stellar <br> performance. <br> Maybe my setup could use some adjustments? <br> <br> 3 hardware nodes running centos7.2, glusterfs 3.7.6.1, ovirt 3.6.2.6-1. <br> Each node has 8 spindles configured in 1 array which is split using LVM <br> with one logical volume for system and one for gluster. <br> They each have 4 NICs, <br> NIC1 = ovirtmgmt <br> NIC2 = gluster (1GbE) <br> </blockquote> </blockquote> How do you ensure that gluster trafic is using this nic? <br> <br> <blockquote type="cite"> <blockquote type="cite"> NIC3 = VM traffic <br> </blockquote> </blockquote> How do you ensure that vm trafic is using this nic? <br> <br> <blockquote type="cite"> <blockquote type="cite">I tried with default glusterfs settings <br> </blockquote> </blockquote> And did you find any difference? <br> <br> <blockquote type="cite"> <blockquote type="cite">and also with: <br> performance.cache-size: 1GB <br> performance.readdir-ahead: on <br> performance.write-behind-window-size: 4MB <br> <br> [root@ovirt3 test scripts]# gluster volume info gv1 <br> <br> Volume Name: gv1 <br> Type: Replicate <br> Volume ID: 71afc35b-09d7-4384-ab22-57d032a0f1a2 <br> Status: Started <br> Number of Bricks: 1 x 3 = 3 <br> Transport-type: tcp <br> Bricks: <br> Brick1: ovirt1-ks.test.j2noc.com:/gluster-store/brick1/gv1 <br> Brick2: ovirt2-ks.test.j2noc.com:/gluster-store/brick1/gv1 <br> Brick3: ovirt3-ks.test.j2noc.com:/gluster-store/brick1/gv1 <br> Options Reconfigured: <br> performance.cache-size: 1GB <br> performance.readdir-ahead: on <br> performance.write-behind-window-size: 4MB <br> <br> <br> Using simple dd test on VM in ovirt: <br> dd if=/dev/zero of=/root/testfile bs=1G count=1 oflag=direct <br> </blockquote> </blockquote> block size of 1G?! <br> <br> Try 1M (our default for storage operations) <br> <br> <blockquote type="cite"> <blockquote type="cite"> 1073741824 bytes (1.1 GB) copied, 65.9337 s, 16.3 MB/s <br> <br> Another VM not in ovirt using nfs: <br> dd if=/dev/zero of=/root/testfile bs=1G count=1 oflag=direct <br> 1073741824 bytes (1.1 GB) copied, 27.0079 s, 39.8 MB/s <br> <br> <br> Is that expected or is there a better way to set it up to get better <br> performance? <br> </blockquote> </blockquote> Adding Niels for advice. <br> <br> <blockquote type="cite"> <blockquote type="cite">This email, its contents and .... <br> </blockquote> </blockquote> Please avoid this, this is a public mailing list, everything you write <br> here is public. <br> <br> Nir <br> </blockquote> I'll have to look into how to remove this sig for this mailing list.... <br> <br> Cloud Services for Business <a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="http://www.j2.com">www.j2.com</a> <br> j2 | eFax | eVoice | FuseMail | Campaigner | KeepItSafe | Onebox <br> <br> <br> This email, its contents and attachments contain information from j2 Global, <br> Inc. and/or its affiliates which may be privileged, confidential or <br> otherwise protected from disclosure. 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