<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">Hi,</div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;"><br></div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;">I was informed by our QA team, that Ceilometer is currently a single threaded application, so this might impact performance.</div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;"><br></div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;"><a href="https://bugs.launchpad.net/ceilometer/+bug/1257329">https://bugs.launchpad.net/ceilometer/+bug/1257329</a></div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;"><br></div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;"><br></div> <div id="bloop_sign_1393485913628106240" class="bloop_sign"><span style="font-family:helvetica,arial;font-size:13px"></span>-- <br>Nick Maslov<br><span>Sent with Airmail</span></div> <br><p style="color:#A0A0A8;">On February 21, 2014 at 1:54:38 PM, Alexander Stellwag (<a href="mailto://openstack@stellwag.net">openstack@stellwag.net</a>) wrote:</p> <blockquote type="cite" class="clean_bq"><span><div><div>Hi Nadya,
<br>
<br>On 02/21/2014 12:27 PM, Nadya Privalova wrote:
<br>> I've investigated this question too. Here is a link on mailing thread
<br>> https://www.mail-archive.com/openstack-dev@lists.openstack.org/msg11196.html
<br>
<br>First of all, thanks for your reply.
<br>
<br>I've already read the thread you're mentioning above but my concern is
<br>not about instance creation but about the ceilometer-calls themselves.
<br>
<br>We've seen no negative affect on the creation time for instances (we
<br>haven't specifically looked at that) but simple calls to ceilometer
<br>("meter-list", ...) run into timeouts.
<br>
<br>The database itself looks good (performance-wise), it looks as if the
<br>API takes too long to respond but I'm not sure how to debug this further.
<br>
<br>Best
<br>Alex
<br>
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