ddidderr/zstd-rs
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reduce Max nb Workers to 64 in 32-bit mode

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and restored limit to 256 when in 64-bit mode
(it was reduced to 200 to give more room for 32-bit).

This should fix test instability issues
using lot of threads in 32-bit environments.
This commit is contained in:
Yann Collet
2021-05-12 13:10:25 -07:00
parent b35c250bf3
commit cb0cad9b79
5 changed files with 9 additions and 6 deletions
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programs/zstd.1.md
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@@ -115,7 +115,8 @@ the last one takes effect.
* `-T#`, `--threads=#`:
Compress using `#` working threads (default: 1).
If `#` is 0, attempt to detect and use the number of physical CPU cores.
In all cases, the nb of threads is capped to ZSTDMT_NBWORKERS_MAX==200.
In all cases, the nb of threads is capped to `ZSTDMT_NBWORKERS_MAX`,
which is either 64 in 32-bit mode, or 256 for 64-bit environments.
This modifier does nothing if `zstd` is compiled without multithread support.
* `--single-thread`:
Does not spawn a thread for compression, use a single thread for both I/O and compression.