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YJIT: Change the default mem size to 64MiB (#6912)

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* YJIT: Change the default mem size to 64MiB

* Also update ruby --help

Co-authored-by: Alan Wu <XrXr@users.noreply.github.com>
This commit is contained in:
Takashi Kokubun 2022-12-13 08:00:22 -08:00 committed by GitHub
parent 99d0a257af
commit a66a69865d
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Notes: git 2022-12-13 16:00:46 +00:00 
Merged-By: maximecb <maximecb@ruby-lang.org>
3 changed files with 3 additions and 3 deletions
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2
NEWS.md
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@ -602,7 +602,7 @@ The following deprecated APIs are removed.
* Simply run ruby with `--yjit-stats` to compute and dump stats (incurs some run-time overhead). * Simply run ruby with `--yjit-stats` to compute and dump stats (incurs some run-time overhead).
* YJIT is now optimized to take advantage of object shapes. [[Feature #18776]] * YJIT is now optimized to take advantage of object shapes. [[Feature #18776]]
* Take advantage of finer-grained constant invalidation to invalidate less code when defining new constants. [[Feature #18589]] * Take advantage of finer-grained constant invalidation to invalidate less code when defining new constants. [[Feature #18589]]
* The default `--yjit-exec-mem-size` is changed to 128 (MiB). * The default `--yjit-exec-mem-size` is changed to 64 (MiB).
* The default `--yjit-call-threshold` is changed to 30. * The default `--yjit-call-threshold` is changed to 30.
### MJIT ### MJIT

2
ruby.c
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@ -340,7 +340,7 @@ usage(const char *name, int help, int highlight, int columns)
#if YJIT_STATS #if YJIT_STATS
M("--yjit-stats", "", "Enable collecting YJIT statistics"), M("--yjit-stats", "", "Enable collecting YJIT statistics"),
#endif #endif
M("--yjit-exec-mem-size=num", "", "Size of executable memory block in MiB (default: 256)"), M("--yjit-exec-mem-size=num", "", "Size of executable memory block in MiB (default: 64)"),
M("--yjit-call-threshold=num", "", "Number of calls to trigger JIT (default: 10)"), M("--yjit-call-threshold=num", "", "Number of calls to trigger JIT (default: 10)"),
M("--yjit-max-versions=num", "", "Maximum number of versions per basic block (default: 4)"), M("--yjit-max-versions=num", "", "Maximum number of versions per basic block (default: 4)"),
M("--yjit-greedy-versioning", "", "Greedy versioning mode (default: disabled)"), M("--yjit-greedy-versioning", "", "Greedy versioning mode (default: disabled)"),

2
yjit/src/options.rs
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@ -49,7 +49,7 @@ pub struct Options {
// Initialize the options to default values // Initialize the options to default values
pub static mut OPTIONS: Options = Options { pub static mut OPTIONS: Options = Options {
exec_mem_size: 128 * 1024 * 1024, exec_mem_size: 64 * 1024 * 1024,
call_threshold: 30, call_threshold: 30,
greedy_versioning: false, greedy_versioning: false,
no_type_prop: false, no_type_prop: false,