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Bench: Add aggressive last-resort GC krausest update probe #237

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Bench: Add aggressive last-resort GC krausest update probe #237

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30 changes: 30 additions & 0 deletions packages/component/bench/tachometer/bench-krausest.js
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Original file line number Diff line number Diff line change
Expand Up @@ -334,6 +334,36 @@ for (let i = 0; i < 50; i++) {
performance.measure('update-gc-50', startMark('update-gc-50'));
destroy();

/*******************************
Update (aggressive GC)
update-10th workload after krausest's aggressive last-resort major GC.
Pairs against update-gc-50 (plain gc): if this clears the regression
and plain gc does not, create-10k's old-space sizing is reclaimable by
a between-op GC hook. If a residual survives, only a fresh realm
(separate page per op) resets it.
*******************************/

const el5c = await mount();
el5c.component.run(1000);
await flush();
if (globalThis.gc) {
try {
globalThis.gc({ type: 'major', execution: 'sync', flavor: 'last-resort' });
}
catch {
globalThis.gc();
}
await flush();
}
// purpose: update-10th workload after an aggressive last-resort major GC (krausest's incantation). Pairs with update-gc-50 to test whether aggressive GC reclaims create-10k old-space sizing that a plain gc leaves.
performance.mark(startMark('update-gc-aggressive-50'));
for (let i = 0; i < 50; i++) {
el5c.component.update();
flushWork();
}
performance.measure('update-gc-aggressive-50', startMark('update-gc-aggressive-50'));
destroy();

/*******************************
Select
(krausest 05_select)
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2 changes: 2 additions & 0 deletions packages/component/bench/tachometer/tachometer-ci-krausest.json
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@
{ "mode": "performance", "entryName": "update-10th-50" },
{ "mode": "performance", "entryName": "update-isolated-50" },
{ "mode": "performance", "entryName": "update-gc-50" },
{ "mode": "performance", "entryName": "update-gc-aggressive-50" },
{ "mode": "performance", "entryName": "select-40" },
{ "mode": "performance", "entryName": "swap-rows-20" },
{ "mode": "performance", "entryName": "remove-row-front-20" },
Expand All @@ -37,6 +38,7 @@
{ "mode": "performance", "entryName": "update-10th-50" },
{ "mode": "performance", "entryName": "update-isolated-50" },
{ "mode": "performance", "entryName": "update-gc-50" },
{ "mode": "performance", "entryName": "update-gc-aggressive-50" },
{ "mode": "performance", "entryName": "select-40" },
{ "mode": "performance", "entryName": "swap-rows-20" },
{ "mode": "performance", "entryName": "remove-row-front-20" },
Expand Down
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