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doc: update --max-semi-space-size description

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PR-URL: https://github.com/nodejs/node/pull/55495
Fixes: https://github.com/nodejs/node/issues/55487
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
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Joe Bowbeer 2024-11-05 15:14:15 -08:00 committed by GitHub
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@ -3541,8 +3541,12 @@ an increase of 1 MiB to semi-space applies to each of the three individual
semi-spaces and causes the heap size to increase by 3 MiB. The throughput
improvement depends on your workload (see [#42511][]).
The default value is 16 MiB for 64-bit systems and 8 MiB for 32-bit systems. To
get the best configuration for your application, you should try different
The default value depends on the memory limit. For example, on 64-bit systems
with a memory limit of 512 MiB, the max size of a semi-space defaults to 1 MiB.
On 64-bit systems with a memory limit of 2 GiB, the max size of a semi-space
defaults to 16 MiB.
To get the best configuration for your application, you should try different
max-semi-space-size values when running benchmarks for your application.
For example, benchmark on a 64-bit systems: