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Redundant CS transition #5192

Merged
merged 1 commit into from
May 13, 2020
Merged

Redundant CS transition #5192

merged 1 commit into from
May 13, 2020

Commits on May 13, 2020

  1. Redundant CS transition 

    Remove the Concurrent Scavenger transition at the begining of
Scavenger's percolate, since we will attempt it anyway before really
percolating as part of
MM_ParallelGlobalGC::completeExternalConcurrentCycle().

Having both attempts can cause problems if first one aborts and then
instead of directly percolating, the second one may trigger another STW
increment seeing the previous one did not complete cycle (not knowing it
aborted).

For a few trace points adjusted priorities, based on how important they
are vs how frequently they occur.

Signed-off-by: Aleksandar Micic <amicic@ca.ibm.com>
    @amicic
    amicic committed May 13, 2020
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