On 2014-08-22 16:20, Erik Joelsson wrote:
Thanks for looking into this. I took the liberty of tuning this some
more and finally arrived at this set of changes:
http://cr.openjdk.java.net/~erikj/8014510/webrev.root.01/
First of all I wanted to get rid of the big if-else construct, so I
changed that into a simple MEMORY_SIZE/2 for sjavac server mx flag.
Then I did some tests on my machine and with the modules build, sjavac
really isn't that memory intensive anymore. I set a cap at 2GB (1,5
for 32 bit jvms) and also set a minimum of 512M, which I have verified
still works. I also removed the verbosegc flag.
When changing these settings, it struck me that the mx in
BIG_JAVA_FLAGS is a static configuration and should probably also be
tuned in the same way. I left the old values as the maximum caps and
let them go as low as 512. This has also been verified to be enough.
Finally, since the memory requirements of the java instances in the
build have been reduced, I also chose to tweak the memory based
limiter on the default number of jobs.
Looks good to me.
/Magnus
