G1GC, Java8u40ea, Metaspace questions

[Wolfgang Pedot]

Jon,

Am 26.02.2015 01:02, schrieb Jon Masamitsu:
> Wolfgang,
>
> Can you run you test program with UseParallelGC and see if you
> see the same growth in the Metaspace?
>

test is now running for a good 30min and it does not look like there is 
growth.
The configuration is the same as before, I just changed +UseG1GC to 
-UseG1GC and added +UseParallelGC. This collector is more successful in 
getting rid of classes right away so Metaspace usage after GC stays 
around ~110MB.
MetaspaceSize is configured to 300MB (Max is 2000MB) and the maximum 
values for commited Metaspace in the gclog are 307200K.
Since usage stays lower than with G1 I am not sure if this is a "fair" 
test regarding HWM calculation.

Wolfgang