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Analyze and suggest performance improvements for code, queries, or systems
Passed 20 of 23 test cases with the skill, and 17 of 23 without it.
and 3 more in the full report
5 fixed15 passed either way1 still failing2 broke1 errored
Tokens, turns and time describe resource use, not a dollar price.
One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.
When invoking a performance optimization analysis command for src/api/search.ts with a desired execution latency threshold of 100 milliseconds, what argument flag should be passed?
| Checked | Without skill | With skill |
|---|---|---|
| The response specifies using the --target=100ms parameter flag. | Missed | Passed |
The instructions your model reads when the skill loads.
Analyze and suggest performance improvements for code, queries, or systems.
Identify optimization opportunities:
Determine optimization target:
# Find potentially slow patterns
grep -rn "forEach\|\.map\|\.filter\|\.reduce" --include="*.{ts,js}" . | head -20
# Find nested loops (O(n²) potential)
grep -rn "for.*for\|\.forEach.*\.forEach\|\.map.*\.map" --include="*.{ts,js}" . | head -10
# Find sync operations that could be async
grep -rn "readFileSync\|writeFileSync\|execSync" --include="*.{ts,js}" . | head -10
test cases passed, vs 17 / 23 without
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