RFR(S): 7189971: Implement CMSWaitDuration for non-incremental mode of CMS

Bernd Eckenfels bernd-2013 at eckenfels.net
Thu Jan 10 21:02:05 UTC 2013


Hello,

two amateur :) questions:

Am 10.01.2013, 21:20 Uhr, schrieb John Cuthbertson
<john.cuthbertson at oracle.com>:
>> I've done a couple of sanity tests with GCOld with CMSWaitDuration=0  
>> and CMSWaitDuration=1500 with CMS.

Is there a risk involved in waiting long/endless? For example larger than
some RMI GC intervall or too long for catching up with the filling of OG?
How to test for that?

>>>>        // No wait limit, wait if necessary forever
>>>>        wait_time_millis = 0;

I typically not use a endless wait limit when there is a loop with a fixed
endtime but use a large but limited number. This helps to catch situations
where wakeup is missing (for example on shutdown) or lost. Would it be an
option to use something like 10s?

Gruss
Bernd
-- 
http://bernd.eckenfels.net



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