RFR (S): 8023158 - hotspot/test/gc/7168848/HumongousAlloc.java fails 14 full gcs, expect 0 full gcs
thomas.schatzl at oracle.com
Tue Sep 24 12:49:21 UTC 2013
On Mon, 2013-09-23 at 18:13 +0200, Per Liden wrote:
> Summary: A side effect of fixing JDK-8020155 was that the HumongousAlloc
> test for G1 broke. This test is designed to make sure than an allocation
> of an humongous object initiates a mark phase if that allocation pushes
> the heap size above InitiatingHeapOccupancyPercent. Due to the changes
> made in JDK-8020155 this test fails since it instead provokes Full GCs.
> This patch fixes the test. Also renamed the test according to the new
> naming schema.
- the name of the class does not correspond to the java file name, so it
does not compile (probably a last-minute change).
- one suggestion for the test: please assign the dummy LOB to a global
static instead of a local variable. The compiler can remove that
allocation easily, say when run with -Xcomp and the server compiler. I
tried adding "-Xcomp" and "-server" to the invocation of the
ProcessBuilder and it did not fail though. It may not hurt to do that
One personal style comment: not sure if you need to prefix all variables
in the test with "g1", but that's just my opinion. I am fine either way.
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