<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi Bernd,<div class=""><br class=""></div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Oct 17, 2017, at 12:12 PM, Bernd Eckenfels <<a href="mailto:ecki@zusammenkunft.net" class="">ecki@zusammenkunft.net</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><div id="x_compose-container" itemscope="" itemtype="https://schema.org/EmailMessage" style="direction: ltr;" class=""><span itemprop="creator" itemscope="" itemtype="https://schema.org/Organization" class=""><span itemprop="name" class=""></span></span><div class=""><div style="direction: ltr;" class=""><div style="direction: ltr;" class="">Hello,</div><div class=""><br class=""></div><div style="direction: ltr;" class="">First of all I wanted to mention as I understand it the application is a graph query server, </div></div></div></div></div></div></blockquote><div><br class=""></div>I think it’s a triple store.</div><div><br class=""><blockquote type="cite" class=""><div class=""><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><div id="x_compose-container" itemscope="" itemtype="https://schema.org/EmailMessage" style="direction: ltr;" class=""><div class=""><div style="direction: ltr;" class=""><div style="direction: ltr;" class="">therefore freeing and creating of large graphs is the workload the GC would have to deal with. (I think Thomas described that allocation pattern - it would lead to spiky promotions if a query transaction lasts longer then a new collection cycle (or multiple))</div></div></div></div></div></div></blockquote><div><br class=""></div>Right, unfortunately we’ve gotten fixated on this particular log where as this is a pattern I’ve seen across many JVMs running in a number of different domains that are not SparQL. Since these are from older JVMs (8 and 7) I didn’t post them as I assumed with the rate of change in G1 that it would be difficult to pin the behavior on a pathological cases. I will try to dig out these older logs if you think it will help.<br class=""><blockquote type="cite" class=""><div class=""><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><div id="x_compose-container" itemscope="" itemtype="https://schema.org/EmailMessage" style="direction: ltr;" class=""><div class=""><div style="direction: ltr;" class=""><div class=""><br class=""></div><div style="direction: ltr;" class="">And in Addition, Thomas did you removed your graph or is<span class="Apple-converted-space"> </span><a dir="ltr" href="http://java.net/" class="">Java.net</a><span class="Apple-converted-space"> </span>refusing to serve pages now?</div></div></div></div></div></div></blockquote><div><br class=""></div><div>I’ve got all the relevant views in Censum and if one is missing I can add it in short order so I can visualize what Thomas is describing.</div><div><br class=""></div><a href="http://java.net" class="">java.net</a> is defunct, has been for a few months. I’ve tried to convince the OTN.. or what ever they’ve decided to rebrand themselves as that the loss of <a href="http://java.net" class="">java.net</a> is a real loss as that site was well branded and now… but that is a different issue and a different discussion and not for this list ;-)</div><div><br class=""></div><div>Regards,</div><div>Kirk</div><div><br class=""></div></div></body></html>