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Tests: Add tooling / skill for detecting and fixing memory leaks in tests (#50654)

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* Tests: add periodic heap snapshot tooling

* Skills: add test heap leak workflow

* Apply suggestion from @greptile-apps[bot]

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

* Update scripts/test-parallel.mjs

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

---------

Co-authored-by: Vincent Koc <vincentkoc@ieee.org>
Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>
This commit is contained in:
Harold Hunt
2026-03-19 17:59:13 -04:00
committed by GitHub
parent da8fb70525
commit bbd62469fa
5 changed files with 459 additions and 19 deletions
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43
scripts/test-parallel-memory.mjs
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@@ -11,7 +11,7 @@ const ANSI_ESCAPE_PATTERN = new RegExp(
const COMPLETED_TEST_FILE_LINE_PATTERN =
/(?<file>(?:src|extensions|test|ui)\/\S+?\.(?:live\.test|e2e\.test|test)\.ts)\s+\(.*\)\s+(?<duration>\d+(?:\.\d+)?)(?<unit>ms|s)\s*$/;
const PS_COLUMNS = ["pid=", "ppid=", "rss="];
const PS_COLUMNS = ["pid=", "ppid=", "rss=", "comm="];
function parseDurationMs(rawValue, unit) {
const parsed = Number.parseFloat(rawValue);
@@ -41,7 +41,7 @@ export function parseCompletedTestFileLines(text) {
.filter((entry) => entry !== null);
}
export function sampleProcessTreeRssKb(rootPid) {
export function getProcessTreeRecords(rootPid) {
if (!Number.isInteger(rootPid) || rootPid <= 0 || process.platform === "win32") {
return null;
}
@@ -54,13 +54,13 @@ export function sampleProcessTreeRssKb(rootPid) {
}
const childPidsByParent = new Map();
const rssByPid = new Map();
const recordsByPid = new Map();
for (const line of result.stdout.split(/\r?\n/u)) {
const trimmed = line.trim();
if (!trimmed) {
continue;
}
const [pidRaw, parentRaw, rssRaw] = trimmed.split(/\s+/u);
const [pidRaw, parentRaw, rssRaw, commandRaw] = trimmed.split(/\s+/u, 4);
const pid = Number.parseInt(pidRaw ?? "", 10);
const parentPid = Number.parseInt(parentRaw ?? "", 10);
const rssKb = Number.parseInt(rssRaw ?? "", 10);
@@ -70,27 +70,30 @@ export function sampleProcessTreeRssKb(rootPid) {
const siblings = childPidsByParent.get(parentPid) ?? [];
siblings.push(pid);
childPidsByParent.set(parentPid, siblings);
rssByPid.set(pid, rssKb);
recordsByPid.set(pid, {
pid,
parentPid,
rssKb,
command: commandRaw ?? "",
});
}
if (!rssByPid.has(rootPid)) {
if (!recordsByPid.has(rootPid)) {
return null;
}
let rssKb = 0;
let processCount = 0;
const queue = [rootPid];
const visited = new Set();
const records = [];
while (queue.length > 0) {
const pid = queue.shift();
if (pid === undefined || visited.has(pid)) {
continue;
}
visited.add(pid);
const currentRssKb = rssByPid.get(pid);
if (currentRssKb !== undefined) {
rssKb += currentRssKb;
processCount += 1;
const record = recordsByPid.get(pid);
if (record) {
records.push(record);
}
for (const childPid of childPidsByParent.get(pid) ?? []) {
if (!visited.has(childPid)) {
@@ -99,5 +102,21 @@ export function sampleProcessTreeRssKb(rootPid) {
}
}
return records;
}
export function sampleProcessTreeRssKb(rootPid) {
const records = getProcessTreeRecords(rootPid);
if (!records) {
return null;
}
let rssKb = 0;
let processCount = 0;
for (const record of records) {
rssKb += record.rssKb;
processCount += 1;
}
return { rssKb, processCount };
}