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add overhead measurement

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This commit is contained in:
Toshit Chawda 2024-11-11 22:29:31 -08:00
parent 6cec47b891
commit c54929198d
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2 changed files with 5 additions and 4 deletions
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2
src/controller/index.ts
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@ -35,7 +35,7 @@ export class ScramjetController {
cleanerrors: false, cleanerrors: false,
scramitize: false, scramitize: false,
sourcemaps: false, sourcemaps: false,
rewriterLogs: false, rewriterLogs: true,
}, },
siteFlags: {}, siteFlags: {},
codec: { codec: {

7
src/shared/rewriters/js.ts
View file

@ -25,6 +25,7 @@ function rewriteJsWrapper(
meta: URLMeta meta: URLMeta
): string | ArrayBuffer { ): string | ArrayBuffer {
let out: RewriterOutput; let out: RewriterOutput;
const before = performance.now();
if (typeof input === "string") { if (typeof input === "string") {
out = rewrite_js(input, meta.base.href, url || "(unknown)", $scramjet); out = rewrite_js(input, meta.base.href, url || "(unknown)", $scramjet);
} else { } else {
@ -35,16 +36,15 @@ function rewriteJsWrapper(
$scramjet $scramjet
); );
} }
const after = performance.now();
const { js, errors, duration } = out; const { js, errors, duration } = out;
// TODO: maybe make this a scram flag?
if (flagEnabled("rewriterLogs", meta.base)) { if (flagEnabled("rewriterLogs", meta.base)) {
for (const error of errors) { for (const error of errors) {
console.error("oxc parse error", error); console.error("oxc parse error", error);
} }
} }
// TODO: maybe make this a scram flag?
if (flagEnabled("rewriterLogs", meta.base)) { if (flagEnabled("rewriterLogs", meta.base)) {
let timespan: string; let timespan: string;
if (duration < 1n) { if (duration < 1n) {
@ -54,8 +54,9 @@ function rewriteJsWrapper(
} else { } else {
timespan = "really slow"; timespan = "really slow";
} }
const overhead = (after - before - Number(duration)).toFixed(2);
console.log( console.log(
`oxc rewrite for "${url || "(unknown)"}" was ${timespan} (${duration}ms)` `oxc rewrite for "${url || "(unknown)"}" was ${timespan} (${duration}ms; ${overhead}ms overhead)`
); );
} }