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Keyhan Vakil
7eafd2f7e8
Speed up child_process.spawn by enabling the new V8 build flag which
makes fork/exec faster.
Here are the results of running the existing benchmark. Note that this
optimization helps more for applications with larger heaps, so this is
somewhat of an underestimate of the real world performance benefits.
```console
$ ./node benchmark/compare.js --runs 15 \
--new ./node \
--old ~/node-v20/out/Release/node \
--filter params child_process > cpr
$ node-benchmark-compare cpr
confidence improvement (***)
methodName='exec' n=1000 *** 60.84 % ±5.43%
methodName='execFile' n=1000 *** 53.72 % ±3.33%
methodName='execFileSync' n=1000 *** 9.10 % ±0.84%
methodName='execSync' n=1000 *** 10.44 % ±0.97%
methodName='spawn' n=1000 *** 53.10 % ±2.90%
methodName='spawnSync' n=1000 *** 8.64 % ±1.22%
0.01 false positives, when considering a 0.1% risk acceptance (***)
```
Fixes: https://github.com/nodejs/node/issues/25382
Fixes: https://github.com/nodejs/node/issues/14917
Refs: https://github.com/nodejs/performance/issues/93
Refs: https://github.com/nodejs/performance/issues/89
PR-URL: https://github.com/nodejs/node/pull/48523
Refs: https://github.com/v8/v8/commit/1a782f6543ae999bf9e497e23042af0b70191f10
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>
Reviewed-By: Debadree Chatterjee <debadree333@gmail.com>