<div dir="ltr">This change has a bug: double counting get(0); should start with s = 0<div><br></div><div>Thanks.</div><div>Tao Mao</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Mar 21, 2016 at 2:55 PM, Jon Masamitsu <span dir="ltr"><<a href="mailto:jon.masamitsu@oracle.com" target="_blank">jon.masamitsu@oracle.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<font face="Times New Roman, Times, serif">Bengt,<br>
<br>
Thanks for the review.<br>
</font><span class=""><br>
<div>On 03/21/2016 02:13 AM, Bengt Rutisson
wrote:<br>
</div>
<blockquote type="cite">
<br>
Hi Jon,
<br>
<br>
On 2016-03-21 03:43, Jon Masamitsu wrote:
<br>
<blockquote type="cite">The averages reported for phase times (for
example "Ext Root Scanning") were
<br>
incorrect. Not all the per thread values were included in the
sum and the
<br>
average value was incorrect (this with build 9-ea+1100)
<br>
<br>
[0.366s][debug][gc,phases ] GC(2) Ext Root
Scanning (ms): Min: 0.3, Avg: 0.2, Max: 0.4, Diff: 0.0,
Sum: 0.3
<br>
[0.366s][trace][gc,phases,task ]
GC(2) 0.4 0.3
<br>
<br>
With the fix all values are included in the sum and the average
is correct.
<br>
<br>
[2.830s][debug][gc,phases ] GC(0) Ext Root
Scanning (ms): Min: 5.7, Avg: 7.3, Max: 8.9, Diff: 3.1,
Sum: 14.6
<br>
[2.830s][trace][gc,phases,task ]
GC(0) 8.9 5.7
<br>
<br>
<a href="https://bugs.openjdk.java.net/browse/JDK-8152208" target="_blank">https://bugs.openjdk.java.net/browse/JDK-8152208</a>
<br>
<a href="http://cr.openjdk.java.net/~jmasa/8152208/webrev.00/" target="_blank">http://cr.openjdk.java.net/~jmasa/8152208/webrev.00/</a>
<br>
</blockquote>
<br>
Nice catch! Your change looks good.
<br>
<br>
The method WorkerDataArray<T>::sum(uint active_threads) just
above the average() method has the same issue. Can you fix that
too?
<br>
</blockquote>
<br></span>
Yes, indeed.<br>
<br>
I messed up the delta a bit so all the changes are in the
workerDataArray.inline.hpp<br>
webrev. The test has not changed.<br>
<br>
<a href="http://cr.openjdk.java.net/~jmasa/8152208/webrev.01/" target="_blank">http://cr.openjdk.java.net/~jmasa/8152208/webrev.01/</a><br>
<br>
Jon<br>
<br>
<blockquote type="cite">
<br>
Thanks,
<br>
Bengt
<br>
<br>
<blockquote type="cite">
<br>
Thanks.
<br>
<br>
Jon
<br>
</blockquote>
<br>
</blockquote>
<br>
</div>
</blockquote></div><br></div>