<div dir="ltr">We will probably keep it at 20 seconds in any case for CFME.<div>But first let's measure the benefit, added a needinfo in the bug.</div><div><br></div><div><br></div><div>Thanks,</div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><pre cols="72"><p style="color:rgb(0,0,0);font-family:overpass,sans-serif;white-space:normal;font-weight:bold;margin:0px;padding:0px;font-size:14px;text-transform:uppercase">YANIV LAVI (YANIV DARY)</p><p style="color:rgb(0,0,0);font-family:overpass,sans-serif;white-space:normal;font-size:10px;margin:0px 0px 4px;text-transform:uppercase">SENIOR TECHNICAL PRODUCT MANAGER</p><p style="font-family:overpass,sans-serif;white-space:normal;margin:0px;font-size:10px;color:rgb(153,153,153)"><a href="https://www.redhat.com/" style="color:rgb(0,136,206);margin:0px" target="_blank">Red Hat Israel Ltd.</a></p><span style="font-family:overpass,sans-serif;white-space:normal;font-size:10px;margin:0px;color:rgb(153,153,153)"><p style="margin:0px">34 Jerusalem Road, Building A, 1st floor</p></span><span style="color:rgb(0,0,0);font-family:overpass,sans-serif;font-size:medium;white-space:normal"></span><span style="color:rgb(0,0,0);font-family:overpass,sans-serif;font-size:medium;white-space:normal"><p style="font-size:10px;margin:0px;color:rgb(153,153,153)">Ra'anana, Israel 4350109</p></span><span style="color:rgb(0,0,0);font-family:overpass,sans-serif;font-size:medium;white-space:normal"></span><p style="font-family:overpass,sans-serif;white-space:normal;margin:0px 0px 6px;font-size:10px"><span style="color:rgb(153,153,153);margin:0px;padding:0px"><a href="mailto:ylavi@redhat.com" style="color:rgb(0,136,206);margin:0px" target="_blank">ylavi@redhat.com</a> </span><font color="#999999"> T: </font><a href="tel:+972-9-7692306" style="color:rgb(0,136,206);margin:0px" target="_blank">+972-9-7692306</a><font color="#999999">/</font><a href="tel:8272306" style="color:rgb(0,136,206);margin:0px" target="_blank">8272306</a><font color="#999999"> F: </font><a href="tel:+972-9-7692223" style="color:rgb(0,136,206);margin:0px" target="_blank">+972-9-7692223</a><font color="#999999"> IM: </font><span style="color:rgb(153,153,153)">ylavi</span></p><table border="0" style="color:rgb(0,0,0);font-family:overpass,sans-serif;font-size:medium;white-space:normal"><tbody><tr><td width="100px"><a href="https://red.ht/sig" target="_blank"><img src="https://www.redhat.com/files/brand/email/sig-redhat.png" width="90" height="auto"></a></td><td style="font-size:10px"><a href="https://redhat.com/trusted" style="color:rgb(204,0,0);font-weight:bold" target="_blank">TRIED. TESTED. TRUSTED.</a></td></tr></tbody></table><div style="color:rgb(0,0,0);font-family:overpass,sans-serif;white-space:normal;font-size:10px"><div style="color:rgb(153,153,153)"><a href="https://twitter.com/redhatnews" title="twitter" style="background:url("https://www.redhat.com/files/brand/email/sm-twitter.png") 0px 50%/16px no-repeat transparent;height:20px;color:rgb(119,119,119);display:inline-block;line-height:20px;padding-left:16px" target="_blank">@redhatnews</a> <a href="https://www.linkedin.com/company/red-hat" title="LinkedIn" style="background:url("https://www.redhat.com/files/brand/email/sm-linkedin.png") 0px 50%/16px no-repeat transparent;height:20px;color:rgb(119,119,119);display:inline-block;line-height:20px;padding-left:16px" target="_blank">Red Hat</a> <a href="https://www.facebook.com/RedHatInc" title="Facebook" style="background:url("https://www.redhat.com/files/brand/email/sm-facebook.png") 0px 50%/16px no-repeat transparent;height:20px;color:rgb(119,119,119);display:inline-block;line-height:20px;padding-left:16px" target="_blank">Red Hat</a></div></div></pre></div></div></div></div></div></div></div>
<br><div class="gmail_quote">On Thu, Jul 6, 2017 at 4:37 PM, Shirly Radco <span dir="ltr"><<a href="mailto:sradco@redhat.com" target="_blank">sradco@redhat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><br><div class="gmail_extra"><span class=""><br clear="all"><div><div class="m_-1109045981418008724gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><pre cols="72" style="white-space:pre-wrap"><span style="font-family:arial,helvetica,sans-serif;font-size:12.8px"><font color="#666666">--</font></span></pre><pre cols="72" style="white-space:pre-wrap"><p style="color:rgb(0,0,0);font-family:overpass,sans-serif;white-space:normal;font-weight:bold;margin:0px;padding:0px;font-size:14px;text-transform:uppercase"><span>SHIRLY</span> <span>RADCO</span></p><p style="color:rgb(0,0,0);font-family:overpass,sans-serif;white-space:normal;font-size:10px;margin:0px 0px 4px;text-transform:uppercase"><span>BI SOFTWARE ENGINEER</span><span style="color:rgb(204,204,204)">,</span></p><p style="font-family:overpass,sans-serif;white-space:normal;margin:0px;font-size:10px;color:rgb(153,153,153)"><a href="https://www.redhat.com/" style="color:rgb(0,136,206);margin:0px;text-decoration:none" target="_blank">Red Hat <span>Israel</span></a></p><p style="font-family:overpass,sans-serif;white-space:normal;margin:0px 0px 6px;font-size:10px;color:rgb(153,153,153)"><span style="margin:0px;padding:0px"><a href="mailto:sradco@redhat.com" style="color:rgb(0,136,206);margin:0px;text-decoration:none" target="_blank">sradco@redhat.com</a> </span></p><table border="0" style="color:rgb(0,0,0);font-family:overpass,sans-serif;font-size:medium;white-space:normal"><tbody><tr><td width="100px"><a href="https://red.ht/sig" target="_blank"><img src="https://www.redhat.com/files/brand/email/sig-redhat.png" width="90" height="auto"></a></td><td style="font-size:10px"><div><a href="https://redhat.com/summit" style="text-decoration:none" target="_blank"><img width="70px" height="auto" src="https://www.redhat.com/files/brand/email/sig-summit.png" style="outline:0px"></a></div></td></tr></tbody></table></pre></div></div></div></div></div></div></div></div></div></div></div></div>
<br></span><div class="gmail_quote"><span class="">On Thu, Jul 6, 2017 at 12:39 PM, Oved Ourfali <span dir="ltr"><<a href="mailto:oourfali@redhat.com" target="_blank">oourfali@redhat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote"><span>On Thu, Jul 6, 2017 at 12:19 PM, Roy Golan <span dir="ltr"><<a href="mailto:rgolan@redhat.com" target="_blank">rgolan@redhat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><br><br><div class="gmail_quote"><span><div dir="ltr">On Thu, Jul 6, 2017 at 12:18 PM Roy Golan <<a href="mailto:rgolan@redhat.com" target="_blank">rgolan@redhat.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div>Action items:<br></div><div>- Demonstrate the effect of the reduction of stats collection on the system - WIP<br>- Code changes:<br></div> - config item change: NumberVmRefreshesBeforeSave from 5 to 10<br></div> - make the 'poll' vms job to fire at NumberVmRefreshesBeforeSave / 2 (or just make the code to support explicit time interval)<br><div> - VDSM should get a config set with the sampling inteval - to support back-compat<br><br></div></div></blockquote></span><div>- Chages to DWH sampling and ManageIQ?<br></div></div></div></blockquote><div><br></div></span><div>I think manageIQ can cope with either 60 seconds or 20 seconds intervals (after a change we've made when we moved to 20 seconds).</div><div>Put an action item indeed to check that with us if we'll decide to do so.</div></div></div></div></blockquote><div><br></div></span><div>Indeed 20 or 60 seconds. Their implementation is very strict and coupled with vmware statistics which are 20 seconds.</div><div><div class="h5"><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div><div class="m_-1109045981418008724h5"><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_quote"><div></div><div><div class="m_-1109045981418008724m_-528481696495698512h5"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr">On Thu, Jul 6, 2017 at 11:00 AM Yaniv Kaul <<a href="mailto:ykaul@redhat.com" target="_blank">ykaul@redhat.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Thu, Jul 6, 2017 at 10:04 AM, Oved Ourfali <span dir="ltr"><<a href="mailto:oourfali@redhat.com" target="_blank">oourfali@redhat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="m_-1109045981418008724m_-528481696495698512m_-9189245337361120370m_6361323019244192293m_9167615593448914138h5">On Thu, Jul 6, 2017 at 9:38 AM, Arik Hadas <span dir="ltr"><<a href="mailto:ahadas@redhat.com" target="_blank">ahadas@redhat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="m_-1109045981418008724m_-528481696495698512m_-9189245337361120370m_6361323019244192293m_9167615593448914138m_3419020168588437508h5">On Wed, Jul 5, 2017 at 9:36 PM, Shirly Radco <span dir="ltr"><<a href="mailto:sradco@redhat.com" target="_blank">sradco@redhat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><br><div class="gmail_extra"><br clear="all"><div><div class="m_-1109045981418008724m_-528481696495698512m_-9189245337361120370m_6361323019244192293m_9167615593448914138m_3419020168588437508m_2447197455926505029m_-5342304022839958984gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><pre cols="72" style="white-space:pre-wrap"><span style="font-family:arial,helvetica,sans-serif;font-size:12.8px"><font color="#666666">--</font></span></pre><pre cols="72" style="white-space:pre-wrap"><p style="color:rgb(0,0,0);font-family:overpass,sans-serif;white-space:normal;font-weight:bold;margin:0px;padding:0px;font-size:14px;text-transform:uppercase"><span>SHIRLY</span> <span>RADCO</span></p><p style="color:rgb(0,0,0);font-family:overpass,sans-serif;white-space:normal;font-size:10px;margin:0px 0px 4px;text-transform:uppercase"><span>BI SOFTWARE ENGINEER</span><span style="color:rgb(204,204,204)">,</span></p><p style="font-family:overpass,sans-serif;white-space:normal;margin:0px;font-size:10px;color:rgb(153,153,153)"><a href="https://www.redhat.com/" style="color:rgb(0,136,206);margin:0px;text-decoration:none" target="_blank">Red Hat <span>Israel</span></a></p><p style="font-family:overpass,sans-serif;white-space:normal;margin:0px 0px 6px;font-size:10px;color:rgb(153,153,153)"><span style="margin:0px;padding:0px"><a href="mailto:sradco@redhat.com" style="color:rgb(0,136,206);margin:0px;text-decoration:none" target="_blank">sradco@redhat.com</a> </span></p><table style="color:rgb(0,0,0);font-family:overpass,sans-serif;font-size:medium;white-space:normal" border="0"><tbody><tr><td width="100px"><a href="https://red.ht/sig" target="_blank"><img src="https://www.redhat.com/files/brand/email/sig-redhat.png" width="90" height="auto"></a></td><td style="font-size:10px"><div><a href="https://redhat.com/summit" style="text-decoration:none" target="_blank"><img src="https://www.redhat.com/files/brand/email/sig-summit.png" style="outline:0px" width="70px" height="auto"></a></div></td></tr></tbody></table></pre></div></div></div></div></div></div></div></div></div></div></div></div>
<br><div class="gmail_quote"><span>On Wed, Jul 5, 2017 at 6:35 PM, Arik Hadas <span dir="ltr"><<a href="mailto:ahadas@redhat.com" target="_blank">ahadas@redhat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote"><span>On Wed, Jul 5, 2017 at 5:57 PM, Roy Golan <span dir="ltr"><<a href="mailto:rgolan@redhat.com" target="_blank">rgolan@redhat.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div>Hi all, <br><br></div>I would like to get feedback on $subject and see if I'm missing something. The impact of this is simply less resource consumption and by that we can support even greater number of hosts [1] and vms in the system. </div></div></blockquote><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><br></div><div>If you think more relaxed statistics collection will affect a core flow let me know - as far as I see I didn't spot anything critical. </div></div></blockquote><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><br>The overhead of a cycle per host something like that: 2 roundtrips per host in a cycle, (vm + host stats) and tons of memory allocation for char[] -> json-> maps of maps -> VM/Vds statistics -> Maps -> serialiazing to DB. <br><br><div>To minimize the effect of this change we can leave a call to 'list' verb to at least detect vms existence in the same rate as today.<br></div></div></div></blockquote><div><br></div></span><div>+1</div><span><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div></div><div><br></div></div><div>Pros<br></div><div>- Engine has rore resources to support more hosts/vms/other activities of the engine<br></div><div>- Vdsm will have more resources as well (need to tweak vdsm to collect in the same <br>frequency)<br></div><div>- less DB writes and reads, approx half of what the system will do in the in its lifefpan (cause this is what is mainly does all the time)<br></div><div><br></div><div>Cons<br></div><div>- DWH/Dashboard will have less entries, I'm not sure what is graphical affect given our hourly resolution (cmiiw here)</div></div></blockquote><div><br></div></span><div>What's the frequency of the queries done by DWH/Dashboard? Do they count on the _update_date column of the queried data?</div></div></div></div></blockquote><div><br></div></span><div>Current frequency is 20 seconds.</div><div>The configurations are queried based on the _update_date, but statistics are queried every interval.</div><div><br></div><div>The affect will be less accuracy in the hourly calculations.</div></div></div></div></blockquote><div><br></div></div></div><div>Ack. So if the proposed change is done, it would probably make sense to increase the inverval of those queries to be higher than 30 sec, or at least taking into consideration the _update_date of vm_statistics as well.</div><span><div> </div></span></div></div></div></blockquote><div><br></div></div></div><div>Note that it will cause issues with cloudforms to change those queries to 30 seconds, so I guess we'll still query it every 20 seconds (although the data won't change in some of those queries).</div></div></div></div></blockquote><div><br></div></div></div></div><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div>I thought it was configurable in ManageIQ how often to query, but in any case even if we query every 20 seconds, we'll get updated VM stats, which is fine, and not as updated hosts stats, which is fine as well, from my perspective.</div></div></div></div><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div>Y.</div></div></div></div><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span><div><br></div><div><br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div>I'm asking because if they query the database every minute and say "the time now is 10:30 and the queried data is ..." then there should not be less entries.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><br></div><br>[1] <a href="https://bugzilla.redhat.com/show_bug.cgi?id=1430876" target="_blank">https://bugzilla.redhat.com/sh<wbr>ow_bug.cgi?id=1430876</a></div></blockquote><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><br></div>
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