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added new command line option heap_size_hint for greedy GC #45369

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May 19, 2022
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added new command line option heap_size_hint for greedy GC #45369

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cdda217
added new command line option heap_size_hint for greedy GC
rssdev10 May 19, 2022
e1b2c99
docs: added new option --heap-size-hint
rssdev10 May 19, 2022
cd7e32b
fixed 32-bit platform typedef
rssdev10 May 19, 2022
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docs: added new option --heap-size-hint
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rssdev10 committed May 19, 2022
commit e1b2c99f10f7533f2271565742cc0e3e6060a7fc
3 changes: 3 additions & 0 deletions NEWS.md
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Expand Up @@ -32,6 +32,9 @@ Command-line option changes
* `--math-mode=fast` is now a no-op ([#41638]). Users are encouraged to use the @fastmath macro instead, which has more well-defined semantics.
* The `--threads` command-line option now accepts `auto|N[,auto|M]` where `M` specifies the
number of interactive threads to create (`auto` currently means 1) ([#42302]).
* New option `--heap-size-hint=<size>` gives a memory hint for triggering greedy garbage
collection. The size might be specified in bytes, kilobytes(1000k), megabytes(300M),
gigabytes(1.5G)

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5 changes: 5 additions & 0 deletions doc/man/julia.1
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Expand Up @@ -216,6 +216,11 @@ expressions. It first tries to use BugReporting.jl installed in current environm
fallbacks to the latest compatible BugReporting.jl if not. For more information, see
--bug-report=help.

.TP
--heap-size-hint=<size>
Forces garbage collection if memory usage is higher that value. The memory hint might be
specified in megabytes (500M) or gigabytes (1.5G)
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Why are these in multiples of 500x or 1.5x?

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those are just examples. It arguably should be written specified in megabytes (e.g. 500M) or gigabytes (e.g. 1.5G)

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Why are these in multiples of 500x or 1.5x?

long double value is used for the numeric part. With 1e-7 restriction as a minimal value. So, even 0.000123G is working.


.TP
--compile={yes*|no|all|min}
Enable or disable JIT compiler, or request exhaustive or minimal compilation
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