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Jarred Sumner
2022-11-28 19:18:17 -08:00
parent 4efce63dad
commit da43761032
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README.md
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@@ -4812,7 +4812,32 @@ To view the snapshot, open the `heap.json` file in Safari's Developer Tools (or
#### Native heap stats
Bun uses mimalloc for the other heap. To report a summary of non-JavaScript memory usage, set the `MIMALLOC_SHOW_STATS=1` environment variable.
Bun uses mimalloc for the other heap. To report a summary of non-JavaScript memory usage, set the `MIMALLOC_SHOW_STATS=1` environment variable. and stats will print on exit.
```js
MIMALLOC_SHOW_STATS=1 bun script.js
# will show something like this:
heap stats: peak total freed current unit count
reserved: 64.0 MiB 64.0 MiB 0 64.0 MiB not all freed!
committed: 64.0 MiB 64.0 MiB 0 64.0 MiB not all freed!
reset: 0 0 0 0 ok
touched: 128.5 KiB 128.5 KiB 5.4 MiB -5.3 MiB ok
segments: 1 1 0 1 not all freed!
-abandoned: 0 0 0 0 ok
-cached: 0 0 0 0 ok
pages: 0 0 53 -53 ok
-abandoned: 0 0 0 0 ok
-extended: 0
-noretire: 0
mmaps: 0
commits: 0
threads: 0 0 0 0 ok
searches: 0.0 avg
numa nodes: 1
elapsed: 0.068 s
process: user: 0.061 s, system: 0.014 s, faults: 0, rss: 57.4 MiB, commit: 64.0 MiB
```
## Credits