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test(agent-eval): show every run's residual and tool mix, not just the median (CG-7)

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A median over 2-3 runs hides swings big enough to flip a repo's sign. On vscode
the without-arm ranged 40k to 67k and the with-arm 59k to 65k across two runs;
the deciding variable is the tool mix, since a with-arm run that reads files ON
TOP of calling explore pays for both.
This commit is contained in:
Colby McHenry
2026-08-04 14:52:07 -05:00
parent b93c8d2b6c
commit 77845c747d
1 changed files with 18 additions and 1 deletions
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scripts/agent-eval/parse-bench-readme.mjs
+18 -1
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@@ -42,6 +42,7 @@ function parse(dir, label) {
const o = s.occupancy;
return {
dur: s.dur, tools: s.tools, reads: s.reads, grep: s.grep, cg: s.cg,
bash: s.counts.Bash || 0,
tokens: s.processed, cost: s.cost, raced: s.raced, turns: s.turns,
segments: files.length,
ctx: o.ctxFinal,
@@ -127,6 +128,22 @@ for (const { repo, W, WO } of rows) {
);
}
console.log(`\nAVERAGE: retrieval residual ${avg(occ.resid)}% lower with codegraph · share-of-context ${avg(occ.shareCtx)}% lower`);
console.log(
`FIXED overhead: codegraph's tool schema + MCP instructions cost ${avg(occ.fixed) >= 0 ? '+' : ''}${avg(occ.fixed)} tok\n` +
` of context before any tool is called (median WITH ctxBase - median WITHOUT ctxBase, averaged\n` +
` over repos). It is paid whether or not the agent ever calls codegraph.`
);
// Per-run detail. Medians over 2-3 runs hide swings big enough to flip a repo's
// sign — the agent's tool mix is the variable, and a with-arm run that reads
// files ON TOP of calling explore pays for both. Show every run.
console.log('\nper run (retrieval residual · tool mix — cg=explore rd=Read gr=Grep bs=Bash):');
for (const { repo, W, WO } of rows) {
if (!W.length && !WO.length) continue;
const one = (r) => `${fmtTok(r.occSelf)}${r.cg ? ` cg${r.cg}` : ''}${r.reads ? ` rd${r.reads}` : ''}${r.grep ? ` gr${r.grep}` : ''}${r.bash ? ` bs${r.bash}` : ''}`;
console.log(` ${repo.padEnd(11)} W: ${W.map(one).join(' | ').padEnd(46)} WO: ${WO.map(one).join(' | ')}`);
}
console.log(
`FIXED overhead: codegraph's tool schema + MCP instructions cost ${avg(occ.fixed) >= 0 ? '+' : ''}${avg(occ.fixed)} tok\n` +
` of context before any tool is called (median WITH ctxBase - median WITHOUT ctxBase, averaged\n` +
@@ -134,7 +151,7 @@ console.log(
);
if (!anyMulti) {
console.log(
`\nCAVEAT: every row above is a SINGLE-turn session, so the residual is measured at the\n` +
`\nCAVEAT: every row is a SINGLE-turn session, so the residual is measured at the\n` +
`moment the one question is answered. Occupancy is a cost that compounds over the turns\n` +
`that FOLLOW; a single-turn number does not settle it. Re-run with "||"-separated\n` +
`follow-ups (see run-all.sh) to measure the regime this metric is actually about.`