5:05 p.m.
Have a question in regards to storage performance. I have a gluster replica
3 volume that we are testing for performance. In my current configuration
is 1 server has 16X1.2TB( 10K 2.5 Inch) drives configured in Raid 10 with a
256k stripe. My 2nd server is configured with 4X6TB (3.5 Inch Drives)
configured Raid 10 with a 256k stripe. Each server is configured with 802.3
Bond (4X1GB) network links. Each server is configured with write-back on
the raid controller.
I am seeing a lot of network usage (solid 3 Gbps) when i perform file copies
on the vm attached to that gluster volume, But i see spikes on the disk io
when watching the dashboard through the cockpit interface. I spikes are up
to 1.5 Gbps, but i would say the average through put is maybe 256 Mbps.
Is this to be expected, or should it be a solid activity in the graphs for
disk IO. Is it better to use a 256K stripe or a 512 strip on the hardware
raid configuration?
Eventually i plan on having the hardware match up for better performance.
Thanks
Bryan
2:59 p.m.
Hi, can you check IOPS? and state # of VM's ? do : iostat -x 1 for a while
=)
Isnt RAID discouraged ? AFAIK gluster likes JBOD, am I wrong?
regards,
JP
2017-10-25 12:05 GMT-03:00 Bryan Sockel <Bryan.Sockel(a)altn.com>:
Have a question in regards to storage performance. I have a gluster
replica 3 volume that we are testing for performance. In my current
configuration is 1 server has 16X1.2TB( 10K 2.5 Inch) drives configured in
Raid 10 with a 256k stripe. My 2nd server is configured with 4X6TB (3.5
Inch Drives) configured Raid 10 with a 256k stripe. Each server is
configured with 802.3 Bond (4X1GB) network links. Each server is
configured with write-back on the raid controller.
I am seeing a lot of network usage (solid 3 Gbps) when i perform file
copies on the vm attached to that gluster volume, But i see spikes on the
disk io when watching the dashboard through the cockpit interface. I
spikes are up to 1.5 Gbps, but i would say the average through put is maybe
256 Mbps.
Is this to be expected, or should it be a solid activity in the graphs for
disk IO. Is it better to use a 256K stripe or a 512 strip on the hardware
raid configuration?
Eventually i plan on having the hardware match up for better performance.
Thanks
Bryan
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4 p.m.
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That was my impression too, but unfortunately someone told in this mail
list recently that Gluster isn't that clever to work without RAID
Controllers and when disks fail it imposes some difficulties for
replacement. Perhaps someone with more knowledge could clarify this
point which certainly is beneficial to people.
Fernando
On 26/10/2017 10:59, Juan Pablo wrote:
Hi, can you check IOPS? and state # of VM's ? do : iostat -x 1
for a
while =)
Isnt RAID discouraged ? AFAIK gluster likes JBOD, am I wrong?
regards,
JP
2017-10-25 12:05 GMT-03:00 Bryan Sockel <Bryan.Sockel(a)altn.com
<mailto:Bryan.Sockel@altn.com>>:
Have a question in regards to storage performance. I have a
gluster replica 3 volume that we are testing for performance. In
my current configuration is 1 server has 16X1.2TB( 10K 2.5
Inch) drives configured in Raid 10 with a 256k stripe. My 2nd
server is configured with 4X6TB (3.5 Inch Drives) configured Raid
10 with a 256k stripe. Each server is configured with 802.3 Bond
(4X1GB) network links. Each server is configured with write-back
on the raid controller.
I am seeing a lot of network usage (solid 3 Gbps) when i perform
file copies on the vm attached to that gluster volume, But i see
spikes on the disk io when watching the dashboard through the
cockpit interface. I spikes are up to 1.5 Gbps, but i would say
the average through put is maybe 256 Mbps.
Is this to be expected, or should it be a solid activity in the
graphs for disk IO. Is it better to use a 256K stripe or a 512
strip on the hardware raid configuration?
Eventually i plan on having the hardware match up for better
performance.
Thanks
Bryan
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Users mailing list
Users(a)ovirt.org <mailto:Users@ovirt.org>
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<http://lists.ovirt.org/mailman/listinfo/users>
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http://lists.ovirt.org/mailman/listinfo/users
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<p>That was my impression too, but unfortunately someone told in
this mail list recently that Gluster isn't that clever to work
without RAID Controllers and when disks fail it imposes some
difficulties for replacement. Perhaps someone with more knowledge
could clarify this point which certainly is beneficial to people.</p>
<p>Fernando<br>
</p>
<br>
<div class="moz-cite-prefix">On 26/10/2017 10:59, Juan Pablo
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CALJLebV1NaTUJ3S4LrUCk=BQOznO_1KVofCuBw=BhSZdVhMS3g@mail.gmail.com">
<div dir="ltr">
<div class="gmail_default"
style="font-family:monospace,monospace">Hi, can you check
IOPS? and state # of VM's ? do : iostat -x 1 for a while =) <br>
<br>
</div>
<div class="gmail_default"
style="font-family:monospace,monospace">Isnt RAID discouraged
? AFAIK gluster likes JBOD, am I wrong?<br>
<br>
<br>
</div>
<div class="gmail_default"
style="font-family:monospace,monospace">regards, <br>
</div>
<div class="gmail_default"
style="font-family:monospace,monospace">JP<br>
</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">2017-10-25 12:05 GMT-03:00 Bryan Sockel
<span dir="ltr"><<a
href="mailto:Bryan.Sockel@altn.com"
target="_blank"
moz-do-not-send="true">Bryan.Sockel@altn.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div
style="font-size:13.3333px;font-family:Tahoma;color:rgb(0,0,0);font-weight:400;font-style:normal;background:none
0% 0%/auto repeat scroll padding-box border-box
rgba(0,0,0,0)">Have a question in regards to storage
performance. I have a gluster replica 3 volume that we
are testing for performance. In my current
configuration is 1 server has 16X1.2TB( 10K 2.5
Inch) drives configured in Raid 10 with a 256k stripe.
My 2nd server is configured with 4X6TB (3.5 Inch Drives)
configured Raid 10 with a 256k stripe. Each server is
configured with 802.3 Bond (4X1GB) network links. Each
server is configured with write-back on the raid
controller.</div>
<div
style="font-size:13.3333px;font-family:Tahoma;color:rgb(0,0,0);font-weight:400;font-style:normal;background:none
0% 0%/auto repeat scroll padding-box border-box
rgba(0,0,0,0)"> </div>
<div
style="font-size:13.3333px;font-family:Tahoma;color:rgb(0,0,0);font-weight:400;font-style:normal;background:none
0% 0%/auto repeat scroll padding-box border-box
rgba(0,0,0,0)">I am seeing a lot of network usage (solid
3 Gbps) when i perform file copies on the vm attached to
that gluster volume, But i see spikes on the disk io
when watching the dashboard through the cockpit
interface. I spikes are up to 1.5 Gbps, but i would say
the average through put is maybe 256 Mbps.</div>
<div
style="font-size:13.3333px;font-family:Tahoma;color:rgb(0,0,0);font-weight:400;font-style:normal;background:none
0% 0%/auto repeat scroll padding-box border-box
rgba(0,0,0,0)"> </div>
<div
style="font-size:13.3333px;font-family:Tahoma;color:rgb(0,0,0);font-weight:400;font-style:normal;background:none
0% 0%/auto repeat scroll padding-box border-box
rgba(0,0,0,0)">Is this to be expected, or should it be a
solid activity in the graphs for disk IO. Is it better
to use a 256K stripe or a 512 strip on the hardware raid
configuration?</div>
<div
style="font-size:13.3333px;font-family:Tahoma;color:rgb(0,0,0);font-weight:400;font-style:normal;background:none
0% 0%/auto repeat scroll padding-box border-box
rgba(0,0,0,0)"> </div>
<div
style="font-size:13.3333px;font-family:Tahoma;color:rgb(0,0,0);font-weight:400;font-style:normal;background:none
0% 0%/auto repeat scroll padding-box border-box
rgba(0,0,0,0)">Eventually i plan on having the hardware
match up for better performance.</div>
<div
style="font-size:13.3333px;font-family:Tahoma;color:rgb(0,0,0);font-weight:400;font-style:normal;background:none
0% 0%/auto repeat scroll padding-box border-box
rgba(0,0,0,0)"> </div>
<div
style="font-size:13.3333px;font-family:Tahoma;color:rgb(0,0,0);font-weight:400;font-style:normal;background:none
0% 0%/auto repeat scroll padding-box border-box
rgba(0,0,0,0)"> </div>
<div
style="font-size:13.3333px;font-family:Tahoma;color:rgb(0,0,0);font-weight:400;font-style:normal;background:none
0% 0%/auto repeat scroll padding-box border-box
rgba(0,0,0,0)">Thanks</div>
<span class="HOEnZb"><font color="#888888">
<div
style="font-size:13.3333px;font-family:Tahoma;color:rgb(0,0,0);font-weight:400;font-style:normal;background:none
0% 0%/auto repeat scroll padding-box border-box
rgba(0,0,0,0)"> </div>
<div id="m_2239789973379271889signature"
style="font-family:Tahoma;color:rgb(0,0,0);font-size:13.3333px;font-weight:400;font-style:normal;background:none
0% 0%/auto repeat scroll padding-box border-box
rgba(0,0,0,0)">
<div>
<div>
<div>Bryan</div>
</div>
</div>
</div>
</font></span></div>
<br>
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participants (3)
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Bryan Sockel -
FERNANDO FREDIANI -
Juan Pablo