RFR: 8150183: gc/g1/plab/TestPLABResize.java - previous PLAB size should be less than current
jon.masamitsu at oracle.com
Thu Feb 25 14:48:42 UTC 2016
On 2/24/2016 4:21 AM, Michail Chernov wrote:
> Please review this fix for gc/g1/plab/TestPLABResize.java test.
> Webrev: http://cr.openjdk.java.net/~mchernov/8150183/webrev.00/
> Bug: https://bugs.openjdk.java.net/browse/JDK-8150183
> This test tries to check resizing PLAB. PLAB desired size calculation
> does not depend on number of GC thread, AppPLABResize.java was fixed.
> Also checking of PLAB sizes was made less strict because we cannot
> expect that PLAB will change exactly as amount of promoted bytes. Now
> test checks only start and end values of test iteration.
> 123 // Check that desired plab size was changed during iterations.
> 124 // It should decrease during first half of iterations
> 125 // and increase after.
Why does the test assume that the plab will decrease in size?
> This was checked on a lot of VM options combination used in nightly.
> PS: Sorry for duplicate of message.
More information about the hotspot-gc-dev