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Hi Bill,
Can you enable virt-profile setting for your volume and see if that
helps? You need to enable this optimization when you create the volume
using ovrit, or use the following command for an existing volume:
#gluster volume set <volname> group virt
-Ravi
On 02/12/2016 05:22 AM, Bill James wrote:
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(a)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 02/10/2016 11:55 PM, Nir Soffer wrote:
>>>>> On Thu, Feb 11, 2016 at 2:42 AM, Ravishankar N
>>>>> <ravishankar(a)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
>>>> list....
>>>>
>>>> Cloud Services for Business www.j2.com
>>>> j2 | eFax | eVoice | FuseMail | Campaigner | KeepItSafe | Onebox
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>>
>>
>>
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--------------020701000405040103030307
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<div class="moz-cite-prefix">Hi Bill,<br>
Can you enable virt-profile setting for your volume and see if
that helps? You need to enable this optimization when you create
the volume using ovrit, or use the following command for an
existing volume:<br>
<tt><br>
#gluster volume set <volname> group virt</tt><br>
<br>
-Ravi<br>
<br>
<br>
On 02/12/2016 05:22 AM, Bill James wrote:<br>
</div>
<blockquote cite="mid:56BD1EB9.5000802@j2.com" type="cite">
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
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>
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Onebox <br>
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prohibited. If you <br>
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<pre wrap="">_______________________________________________
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