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I tried 1.4.3 and 1.4.4, similar slow results.
<br>
<br>
The bug you mentioned looks slightly different to me - it's about
problem with posix_fadvise() support on 32bit machines. In my case,
it's lack of fallocate() on old kernel. All our nodes have 64bit OS.
<br>
<br>
If confirmed, it could be helpful to mentione somewhere on the
official page that minimum supported CentOS version is 6.x. I hope
that someone from OpenStack can confirm it.
<br>
<br>
Thanks,
<br>
Rustam.
<br>
<br>
On 10/01/2012 17:53, Armando Migliaccio wrote:
<blockquote
cite="mid:2BAFFF2BACC5E545B3264F3CBD529190B260180B77@LONPMAILBOX01.citrite.net"
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">What
swift version did you run for your experimental campaign? <o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">It’s
been a long time, but I seem to remember a similar problem;
IIRC this was solved after swift 1.4.2 and more precisely
with this bug fix:<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><a
moz-do-not-send="true"
href="https://bugs.launchpad.net/swift/+bug/794618">https://bugs.launchpad.net/swift/+bug/794618</a><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">HTH<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">A.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div style="border:none;border-left:solid blue 1.5pt;padding:0cm
0cm 0cm 4.0pt">
<div>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"
lang="EN-US">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"
lang="EN-US">
<a class="moz-txt-link-abbreviated" href="mailto:openstack-bounces+armando.migliaccio=eu.citrix.com@lists.launchpad.net">openstack-bounces+armando.migliaccio=eu.citrix.com@lists.launchpad.net</a>
[<a class="moz-txt-link-freetext" href="mailto:openstack-bounces+armando.migliaccio=eu.citrix.com@lists.launchpad.net">mailto:openstack-bounces+armando.migliaccio=eu.citrix.com@lists.launchpad.net</a>]
<b>On Behalf Of </b>Rustam Aliyev<br>
<b>Sent:</b> 10 January 2012 16:49<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a><br>
<b>Subject:</b> Re: [Openstack] Swift on RHEL/CentOS
in prod?<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Helvetica","sans-serif"">Hi
Armando,<br>
<br>
<br>
Thanks for sharing your experience. It's interesting to
hear that you run 5.5.<br>
<br>
My problem is Swift performance (only Swift, I wasn't
interested in Nova). I couldn't get beyond 6-7 writes/sec
with 5 node Swift cluster running on CentOS 5.7
(2.6.18-238.19.1.el5) and with RF=3. After troubleshooting
for a couple of weeks, we came to conclusion that CentOS
5.x is not supported. See my explanation here: <a
moz-do-not-send="true"
href="https://lists.launchpad.net/openstack/msg06303.html">https://lists.launchpad.net/openstack/msg06303.html</a><br>
<br>
Right now decision was made to upgrade to CentOS 6.x, but
it will take a while.<br>
<br>
Did you run any performance tests at all? Would be
interesting to see some swift-bench figures if available.<br>
<br>
<br>
Many thanks,<br>
Rustam.<br>
<br>
<br>
</span><br>
On 10/01/2012 13:59, Armando Migliaccio wrote: <o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">We
(Citrix) have used CentOS 5.5 (kernel
2.6.18-194.32.1.el5xen), in small pilot environments. Our
choice has fallen on CentOS for reasons that I am not
going to bore you with. We are going to switch to Ubuntu
not because of performance but primarily because of
packaging.</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">What
are your concerns? Performance, stability or setup
complexities?</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">A.</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><o:p></o:p></p>
<div style="border:none;border-left:solid blue
1.5pt;padding:0cm 0cm 0cm 4.0pt">
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<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"
lang="EN-US">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"
lang="EN-US"> <a moz-do-not-send="true"
href="mailto:openstack-bounces+armando.migliaccio=eu.citrix.com@lists.launchpad.net">openstack-bounces+armando.migliaccio=eu.citrix.com@lists.launchpad.net</a>
[<a moz-do-not-send="true"
href="mailto:openstack-bounces+armando.migliaccio=eu.citrix.com@lists.launchpad.net">mailto:openstack-bounces+armando.migliaccio=eu.citrix.com@lists.launchpad.net</a>]
<b>On Behalf Of </b>Rustam Aliyev<br>
<b>Sent:</b> 22 December 2011 11:08<br>
<b>To:</b> <a moz-do-not-send="true"
href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a><br>
<b>Subject:</b> [Openstack] Swift on RHEL/CentOS in
prod?</span><o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Helvetica","sans-serif"">Hi,<br>
<br>
I was wondering if anyone uses Swift on RHEL/CentOS in
production?<br>
<br>
If yes, which version of RHEL/CentOS you are using?</span><o:p></o:p></p>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
Thanks, <br>
Rustam.<o:p></o:p></p>
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