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Posted to commits@logging.apache.org by mi...@apache.org on 2016/05/04 16:20:51 UTC
[3/5] logging-log4j2 git commit: LOG4J2-1297 small improvements
LOG4J2-1297 small improvements
Project: http://git-wip-us.apache.org/repos/asf/logging-log4j2/repo
Commit: http://git-wip-us.apache.org/repos/asf/logging-log4j2/commit/6eb9c787
Tree: http://git-wip-us.apache.org/repos/asf/logging-log4j2/tree/6eb9c787
Diff: http://git-wip-us.apache.org/repos/asf/logging-log4j2/diff/6eb9c787
Branch: refs/heads/LOG4J2-1347
Commit: 6eb9c78772d0b41a16d236523385484098743c8c
Parents: 247537f
Author: rpopma <rp...@apache.org>
Authored: Thu May 5 00:45:03 2016 +0900
Committer: rpopma <rp...@apache.org>
Committed: Thu May 5 00:45:03 2016 +0900
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src/site/xdoc/manual/garbagefree.xml | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
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http://git-wip-us.apache.org/repos/asf/logging-log4j2/blob/6eb9c787/src/site/xdoc/manual/garbagefree.xml
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diff --git a/src/site/xdoc/manual/garbagefree.xml b/src/site/xdoc/manual/garbagefree.xml
index e552f15..1aab709 100644
--- a/src/site/xdoc/manual/garbagefree.xml
+++ b/src/site/xdoc/manual/garbagefree.xml
@@ -382,10 +382,9 @@ public void garbageFree() {
</p>
-->
<table>
- <tr><td>I encourage everyone to take the red pill and watch Gil Tene's presentation
+ <tr><td>For more information on this topic please watch Gil Tene's eye-opening presentation
<a href="http://www.infoq.com/presentations/latency-response-time">How NOT to measure latency</a>.
- Be warned, this talk is about removing the wool from your eyes.
- You will learn a lot but may not always like what you've learnt.</td></tr>
+ </td></tr>
</table>
<p>The response time test results below were all derived from running the ResponseTimeTest class
which can be found in the Log4j 2 unit test source directory. If you want to run these tests yourself,
@@ -393,12 +392,15 @@ public void garbageFree() {
</p>
<ul>
<li>-Xms1G -Xmx1G (prevent heap resizing during the test)</li>
+ <!--
<li>-XX:+UnlockDiagnosticVMOptions -XX:GuaranteedSafepointInterval=500000 (by default Hotspot schedules a
safepoint pause every second. Reduce jitter by postponing this for the duration of the test.)</li>
+ -->
<li>-DLog4jContextSelector=org.apache.logging.log4j.core.async.AsyncLoggerContextSelector
-DAsyncLogger.WaitStrategy=busyspin (to use Async Loggers. The BusySpin wait strategy reduces some jitter.)</li>
<li><b>classic mode: </b>-Dlog4j2.enable.threadlocals=false -Dlog4j2.enable.direct.encoders=false<br />
<b>garbage-free mode: </b>-Dlog4j2.enable.threadlocals=true -Dlog4j2.enable.direct.encoders=true</li>
+ <li>-XX:CompileCommand=dontinline,org.apache.logging.log4j.core.async.perftest.NoOpIdleStrategy::idle</li>
<li>-verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintTenuringDistribution
-XX:+PrintGCApplicationConcurrentTime -XX:+PrintGCApplicationStoppedTime (to eyeball GC and safepoint pauses)</li>
</ul>