src/hotspot/share/gc/shared/generationSpec.hpp
No comments.
test/hotspot/jtreg/serviceability/tmtools/jstat/utils/JstatGcCapacityResults.java
No comments.
Thumbs up.
Dan
On 12/12/19 10:23 AM, Stefan Karlsson wrote:
In the interest to get this integrated before the RDP cut-off I'm
going to push this ASAP. This has gone through tier1-tier3 testing.
StefanK
On 2019-12-12 13:01, Stefan Karlsson wrote:
Hi all,
Please review this patch to fix a problem with unintialized values in
our generation counters.
https://cr.openjdk.java.net/~stefank/8226797/webrev.01/
https://bugs.openjdk.java.net/browse/JDK-8226797
The jstat values NGCMN and OGCMN both return uninitialized values.
I stumbled upon this while creating a patch to remove the
GenerationSpec class.
GenerationSpec::_min_size is never initialized, and then used to
create the generations:
case Generation::DefNew:
return new DefNewGeneration(rs, _init_size, _min_size,
_max_size);
case Generation::MarkSweepCompact:
return new TenuredGeneration(rs, _init_size, _min_size,
_max_size, remset);
That in turn uses it to initialize the perf counters:
DefNewGeneration::DefNewGeneration(ReservedSpace rs,
size_t initial_size,
size_t min_size,
size_t max_size,
const char* policy)
...
_gen_counters = new GenerationCounters("new", 0, 3,
min_size, max_size, &_virtual_space);
I'm setting the value to _init_size, because it reflects how
MinNewSize and MinOldSize relates to NewSize and OldSize.
Thanks,
StefanK
