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doc: note synchronous part of child_process.spawn #21234

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doc: note synchronous part of child_process.spawn #21234

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doc: note synchronous part of child_process.spawn
davisjam Jun 9, 2018
3119e9b
doc: add reference to V8 issue
davisjam Jun 10, 2018
217acc4
nit: UNIX-like OSes
davisjam Jun 15, 2018
bbfd361
nits: relocate and drop prefix 'Note:'
davisjam Jun 15, 2018
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6 changes: 6 additions & 0 deletions doc/api/child_process.md
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Expand Up @@ -652,6 +652,12 @@ child registers an event handler for the [`'disconnect'`][] event
or the [`'message'`][] event. This allows the child to exit
normally without the process being held open by the open IPC channel.*

On UNIX-like operating systems, the [`child_process.spawn()`][] method
performs memory operations synchronously before decoupling the event loop
from the child. Applications with a large memory footprint may find frequent
[`child_process.spawn()`][] calls to be a bottleneck. For more information,
see [V8 issue 7381](https://bugs.chromium.org/p/v8/issues/detail?id=7381).

See also: [`child_process.exec()`][] and [`child_process.fork()`][].

## Synchronous Process Creation
Expand Down