Integrated: 8260408: Shenandoah: adjust inline hints after JDK-8255019
Aleksey Shipilev
shade at openjdk.java.net
Tue Jan 26 13:08:43 UTC 2021
On Tue, 26 Jan 2021 11:41:52 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:
> I was following up on performance testing results for some ongoing work, and realized that there are `ShenandoahMarkContext::mark_strong` calls from `mark_work_loop`. Those callees were supposed to be inlined. I believe it is a simple omission after JDK-8255019 moved `mark_work_loop` code to `shenandoahMark.cpp`.
>
> On a typical workload:
>
> # Before
> [44.500s][info][gc,stats] Concurrent Marking = 0.395 s (a = 11278 us)
> (n = 35) (lvls, us = 6426, 9473, 11133, 12891, 16476)
>
> # After
> [44.405s][info][gc,stats] Concurrent Marking = 0.337 s (a = 9636 us)
> (n = 35) (lvls, us = 3770, 7383, 9785, 11328, 16776)
>
> Additional testing:
> - [x] Eyeballing GC hot paths
> - [x] Ad-hoc performance tests
This pull request has now been integrated.
Changeset: edd27074
Author: Aleksey Shipilev <shade at openjdk.org>
URL: https://git.openjdk.java.net/jdk/commit/edd27074
Stats: 3 lines in 1 file changed: 0 ins; 1 del; 2 mod
8260408: Shenandoah: adjust inline hints after JDK-8255019
Reviewed-by: rkennke, ihse
-------------
PR: https://git.openjdk.java.net/jdk/pull/2235
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