<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
</head>
<body bgcolor="#FFFFFF" text="#000000">
Hi all,<br>
<br>
Please review to convert TracePageSizes to use UL.<br>
<br>
<a class="moz-txt-link-freetext" href="http://cr.openjdk.java.net/~stefank/8152491/webrev.01">http://cr.openjdk.java.net/~stefank/8152491/webrev.01</a><br>
<a class="moz-txt-link-freetext" href="https://bugs.openjdk.java.net/browse/JDK-8152491">https://bugs.openjdk.java.net/browse/JDK-8152491</a><br>
<br>
TracePageSizes used to be a develop flag, but I've decided to create
a UL tag accessible from release builds. We've recently needed to
debug some large pages code and wanted this information in release
builds.<br>
<br>
Changes in the patch:<br>
<br>
1) Replaced TracePageSizes with the 'pagesizes' UL tag<br>
2) Cleaned up the memory region description strings<br>
3) Used B/K/M/G suffixes when the size is exactly divisible by those<br>
4) Removed
<meta http-equiv="content-type" content="text/html; charset=utf-8">
trace_gen_sizes, since the output was too obscure to be that helpful<br>
5) Added tracing for Serial and CMS<br>
6) Fixed a jtreg test that verified the output from TracePageSizes<br>
<br>
Example output from 'java -Xlog:pagesizes -Xmx512m
-XX:+UseLargePages -version':<br>
<br>
[0.018s][info][pagesizes] CodeHeap 'non-nmethods': min=2496K max=8M
base=0x00007fd735000000 page_size=4K size=8M<br>
[0.018s][info][pagesizes] CodeHeap 'profiled nmethods': min=2496K
max=116M base=0x00007fd735800000 page_size=4K size=116M<br>
[0.018s][info][pagesizes] CodeHeap 'non-profiled nmethods':
min=2496K max=116M base=0x00007fd73cc00000 page_size=4K size=116M<br>
[0.056s][info][pagesizes] Heap: min=8M max=512M
base=0x00000000e0000000 page_size=2M size=512M<br>
[0.056s][info][pagesizes] Block Offset Table: req_size=1M
base=0x00007fd6d5fe1000 page_size=4K alignment=4K size=1M<br>
[0.056s][info][pagesizes] Card Table: req_size=1M
base=0x00007fd6d5de1000 page_size=4K alignment=4K size=1M<br>
[0.056s][info][pagesizes] Card Counts Table: req_size=1M
base=0x00007fd6d5ce1000 page_size=4K alignment=4K size=1M<br>
[0.056s][info][pagesizes] Prev Bitmap: req_size=8M
base=0x00007fd6d5400000 page_size=2M alignment=2M size=8M<br>
[0.056s][info][pagesizes] Next Bitmap: req_size=8M
base=0x00007fd6d4c00000 page_size=2M alignment=2M size=8M<br>
<br>
The patch uses the LogStreamCHeap from the following patch that is
out for review:<br>
<a class="moz-txt-link-freetext" href="http://mail.openjdk.java.net/pipermail/hotspot-dev/2016-April/022477.html">http://mail.openjdk.java.net/pipermail/hotspot-dev/2016-April/022477.html</a><br>
<br>
Tested with JPRT and new internal VM test for the suffixes.<br>
<br>
Thanks,<br>
StefanK<br>
</body>
</html>