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fix: update test.sh for Node 21 and up output #305

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fix: update test.sh for Node 21 and up output #305

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987596f
fix: update test.sh for newer node versions
benminer Feb 6, 2025
88fccc3
fix: add node 21 and 22 to ci workflows
benminer Feb 6, 2025
1e6dc15
Merge branch 'main' into main
rohitpruthi-google Feb 18, 2025
71ee5bd
remove nodejs21; adjust benchmark to .js instead of .ts
benminer Jun 26, 2025
bb9bcef
remove 21 in ci
benminer Jun 26, 2025
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2 changes: 1 addition & 1 deletion .github/workflows/ci.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ jobs:
strategy:
fail-fast: false
matrix:
node: [14, 16, 18, 20]
node: [14, 16, 18, 20, 22]
steps:
- uses: actions/checkout@v4
- uses: actions/setup-node@v4
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2 changes: 1 addition & 1 deletion system-test/system_test.sh
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Expand Up @@ -14,7 +14,7 @@ cd $(dirname $0)
# official releases. https://nodejs.org/en/about/releases/
if [[ -z "$BINARY_HOST" ]]; then
ADDITIONAL_PACKAGES="python3 g++ make"
NODE_VERSIONS=(14 16 18 20)
NODE_VERSIONS=(14 16 18 20 22)
else
# Tested versions for pre-built binaries are limited based on
# what node-pre-gyp can specify as its target version.
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26 changes: 20 additions & 6 deletions system-test/test.sh
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Expand Up @@ -55,17 +55,31 @@ if [[ "$VERIFY_TIME_LINE_NUMBERS" != "true" ]]; then
npm run compile
fi

NODE_VERSION=$(node -v | cut -d. -f1 | tr -d 'v')
node -v
node --trace-warnings "$BENCHPATH" 10 $VERIFY_TIME_LINE_NUMBERS

if [[ "$VERIFY_TIME_LINE_NUMBERS" == "true" ]]; then
pprof -lines -top -nodecount=2 time.pb.gz | tee $tty | \
grep "busyLoop.*src/busybench.js:[2-3][08-9]"
pprof -filefunctions -top -nodecount=2 heap.pb.gz | tee $tty | \
grep "busyLoop.*src/busybench.js"
output=$(pprof -lines -top -nodecount=2 time.pb.gz | tee $tty)

# Due to V8 changes in Node 21, the line numbers are different.
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Thanks for the PR. It's unfortunate that the function name is lost. Do you have any more info on this V8 change or if there is something we can do to workaround it?

It's good to see the output is the same in older node versions.

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Last time I looked at this, I did some playing around and found some weird behavior. #284 somehow restores the function name

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Ah, hm. I am no v8 expert, but from some quick searches, this could be because v8's optimizer was changed/improved in version 11 (which node21 is using). Since busyLoop is in the "hot path", there might be some under the hood optimizations happening to it that hide it from the profiler, which adding noop to break it up removes.

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I'll try to dig for a way to force this, it may even require some changes to how pprof is being called altogether.

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I think I just proved this too, adding this native syntax yields function name in v21 (without the noop function)

function busyLoop(durationSeconds) {
  %NeverOptimizeFunction(busyLoop);

You have to execute the benchmark with --allow-natives-syntax, though.

The output:

Showing top 2 nodes out of 6
      flat  flat%   sum%        cum   cum%
    1805ms 68.58% 68.58%     2606ms 99.01%  (anonymous) file:/tmp/tmp.YTvrn84YUd/busybench/src/busybench.js:37
     634ms 24.09% 92.67%      634ms 24.09%  busyLoop file:/tmp/tmp.YTvrn84YUd/busybench/src/busybench.js:32'

interesting that there is still one trace that is anonymous, though,

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@benminer that makes sense and kind of what I figured. Thank you for looking into this. It sounds good to merge this then, I'll let @rohitpruthi-google take it over.

# It also emits "anonymous" and "idle" statuses in the output.
# E.G: 1877ms 74.93% 74.93% 1878ms 74.97% (anonymous) file:/tmp/tmp.xyz/busybench/src/busybench.js:34
if [ "$NODE_VERSION" -ge 21 ]; then
grep "anonymous.*busybench.js:3[0-9]" <<< "$output"
else
grep "busyLoop.*src/busybench.js:[23][0-9]" <<< "$output"
fi

heap_output=$(pprof -filefunctions -top -nodecount=2 heap.pb.gz | tee $tty)
grep "busyLoop.*src/busybench.js" <<< "$heap_output"
else
pprof -filefunctions -top -nodecount=2 time.pb.gz | tee $tty | \
grep "busyLoop.*src/busybench.ts"
output=$(pprof -filefunctions -top -nodecount=2 time.pb.gz | tee $tty)
if [ "$NODE_VERSION" -ge 21 ]; then
grep "anonymous.*busybench.js" <<< "$output"
else
grep "busyLoop.*src/busybench.ts" <<< "$output"
fi
pprof -filefunctions -top -nodecount=2 heap.pb.gz | tee $tty | \
grep "busyLoop.*src/busybench.ts"
fi
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