This one is fun

Srinivas Ramakrishna ysr1729 at gmail.com
Wed Dec 19 12:52:28 PST 2012


I think it makes sense to file a bug report, if not for anything else, just
so it doesn't fall through the cracks and
someone with spare time can look through the code and find the bug that
would allow this to happen (and fix
it). :-)

A bug report is a terrible thing to allow to fall through the cracks,
especially in a software system that has the kind
of longevity and ubiquity that the JDK/JVM has.

-- ramki

On Wed, Dec 19, 2012 at 12:26 PM, Kirk Pepperdine <kirk at kodewerk.com> wrote:

> I get logs from all over and some times I get details and quite often I
> don't. All I can say about this tone is that it occurred many times. There
> are other bugs in the logs but... those are harder to see. Should I file a
> bug report?
>
> -- Kirk
>
> On 2012-12-19, at 9:20 PM, Srinivas Ramakrishna <ysr1729 at gmail.com> wrote:
>
> Looks like you may have found a bug in the code for age updates or usage.
> You said this is not a one-off. Perhaps you
> can see if the same thing happens with a more recent JDK and file a bug
> with more details?
>
> (Unless I am missing something and others might know of some kind of a
> known, benign race condition that might allow this to happen.)
>
> -- ramki
>
> On Fri, Nov 16, 2012 at 12:49 AM, Kirk Pepperdine <kirk at kodewerk.com>wrote:
>
>> Would anyone like to comment on how this is possible? :-)
>>
>> 471491.529: [GC 471491.529: [ParNew
>> Desired survivor size 14155776 bytes, new threshold 4 (max 4)
>> - age   1:    5583536 bytes,    5583536 total
>> - age   2:      35264 bytes,    5618800 total
>> - age   3:      25696 bytes,    5644496 total
>> - age   4:      78416 bytes,    5722912 total
>> - age   5:         48 bytes,    5722960 total
>> : 228264K->9132K(249216K), 0.0701370 secs]
>> 33856434K->33637302K(60789760K), 0.0703130 secs] [Times: user=0.87
>> sys=0.01, real=0.07 secs]
>>
>> JDK 1.6.0_something_greather_than_25.. and it's not a one-off.
>>
>> Regards,
>> Kirk
>
>
>
>
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