<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,<div class=""><br class=""></div><div class="">Does this represent a change in behavior aside from it being adaptive. I ask because I understand this comment to suggest that IHOP is no longer based on total heap occupancy but instead just on tenured occupancy.</div><div class="">Sorry but aside from that I find the comment some what confusing. Can you confirm that what I’ve written is what is meant.</div><div class=""><br class=""></div><div class="">"The percent occupancy (IHOP) of old generational heap after which a concurrent mark cycle with be initiated with the next GC. The value maybe changed if adaptive IHOP is enabled. Otherwise the value remains constant. Setting a value of 0 will result in frequent concurrent marking cycles. (G1 collector only)”</div><div class=""><div class=""><br class=""></div><div class=""><pre style="background-color: rgb(238, 238, 238);" class=""><span class="new" style="color: blue;">+ "Percentage of the old gen heap occupancy to start a concurrent " \</span>
<span class="new" style="color: blue;">+ "GC cycle (IHOP) at the end of the next GC. " \</span>
<span class="new" style="color: blue;">+ "If the IHOP value is determined adaptively by the collector, " \</span>
<span class="new" style="color: blue;">+ "this value is used as the initial value while there is not " \</span>
<span class="new" style="color: blue;">+ "enough information to do the adaptive sizing. Otherwise this " \</span>
<span class="new" style="color: blue;">+ "value is fixed. In this case, setting a value of 0 causes " \</span>
<span class="new" style="color: blue;">+ "concurrent marking to run as much as possible. " \</span>
<span class="new" style="color: blue;">+ "Used in the G1 collector only.")</span></pre><div class=""><br class=""></div><div class="">Kind regards,</div><div class="">Kirk</div><div class=""><br class=""></div><div><blockquote type="cite" class=""><div class="">On Feb 5, 2016, at 11:52 AM, Thomas Schatzl <<a href="mailto:thomas.schatzl@oracle.com" class="">thomas.schatzl@oracle.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">Hi all,<br class=""><br class=""> can I have reviews for this change to the documentation of the<br class=""> InitiatingHeapOccupancyPercent global? I think due to recent changes<br class="">to the behavior it is warranted that the (internal) documentation<br class="">reflects it.<br class=""><br class="">Other suggestions for the text welcome.<br class=""><br class="">CR:<br class=""><a href="https://bugs.openjdk.java.net/browse/JDK-8143220" class="">https://bugs.openjdk.java.net/browse/JDK-8143220</a><br class="">Webrev:<br class="">http://cr.openjdk.java.net/~tschatzl/8143220/webrev/<br class="">Testing:<br class="">local compilation<br class=""><br class="">Thanks,<br class=""> Thomas<br class=""><br class=""></div></div></blockquote></div><br class=""></div></div></body></html>