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1368972 - Increase slice time for long-running incremental GCs

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1368972 - Increase slice time for long-running incremental GCs when CC has tried to run.
This commit is contained in:
win7-7 2024-04-27 15:56:50 +03:00 • committed by wuggy
commit fa9a1402d5
1 changed files with 14 additions and 6 deletions
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20
dom/base/nsJSEnvironment.cpp
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@ -1814,12 +1814,20 @@ InterSliceGCRunnerFired(TimeStamp aDeadline, void* aData)
{
nsJSContext::KillInterSliceGCRunner();
MOZ_ASSERT(sActiveIntersliceGCBudget > 0);
// We use longer budgets when timer runs since that means
// there hasn't been idle time recently and we may have significant amount
// garbage to collect.
int64_t budget = sActiveIntersliceGCBudget * 2;
if (!aDeadline.IsNull()) {
budget = int64_t((aDeadline - TimeStamp::Now()).ToMilliseconds());
// We use longer budgets when the CC has been locked out but the CC has tried
// to run since that means we may have significant amount garbage to collect
// and better to GC in several longer slices than in a very long one.
int64_t budget = aDeadline.IsNull() ?
int64_t(sActiveIntersliceGCBudget) :
int64_t((aDeadline - TimeStamp::Now()).ToMilliseconds());
if (sCCLockedOut && sCCLockedOutTime) {
int64_t lockedTime = PR_Now() - sCCLockedOutTime;
int32_t maxSliceGCBudget = sActiveIntersliceGCBudget * 10;
double percentOfLockedTime =
std::min((double)lockedTime / NS_MAX_CC_LOCKEDOUT_TIME, 1.0);
budget =
static_cast<int64_t>(
std::max((double)budget, percentOfLockedTime * maxSliceGCBudget));
}
uintptr_t reason = reinterpret_cast<uintptr_t>(aData);