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No current plans to integrate this. But this is something we could
consider as part of our ongoing effort to support Mission Control.<br>
<br>
Tony<br>
<br>
On 11/16/2011 7:01 PM, Srinivas Ramakrishna wrote:
<blockquote
cite="mid:CABzyjynyN8=THDUOFRFosda0p0cgyRfEdBZFuTtFZCnwO-U56Q@mail.gmail.com"
type="cite">AFAR, it was not integrated at that time because of
the performance impact even when the feature was turned off.<br>
I believe it would be possible to refactor the code, at some cost,
to get this to work without that performance<br>
impact, but that didn't get done. It might be time to revisit that
code and do the requisite refactoring. Tony et al?<br>
<br>
-- ramki<br>
<br>
<br>
<div class="gmail_quote">On Wed, Nov 16, 2011 at 3:45 PM, Michal
Frajt <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:michal@frajt.eu">michal@frajt.eu</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div link="blue" vlink="purple" lang="CS">
<div>
<p class="MsoNormal"><span lang="EN-US">Hi,</span></p>
<p class="MsoNormal">
<span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">Is there a way to
get printed a survivor space class histogram on every
minor collection run? Tony once provided us a special
jdk build containing this feature but it got never
integrated as a print flag into the main hotspot
version. It was very useful for understanding and
identifying promoted objects to the old gen.
Additionally we were looking to get a class histogram
print for the eden space but there was no easy way to
implement it. The eden space class histogram would
help to identify garbage invoking minor collection
runs. It could be as well used to check the impact of
the scalar replacements.</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">Would it be
possible to reimplement both histogram prints?</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks,</span></p>
<p class="MsoNormal"><span lang="EN-US">Michal</span></p>
</div>
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<br>
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