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/README.md
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@@ -224,7 +224,8 @@ Therefore, this avenue is intentionally restricted and only supports `ZSTD_CLEVE
that `zstd` will use for compression, which by default is `1`.
This functionality only exists when `zstd` is compiled with multithread support.
`0` means "use as many threads as detected cpu cores on local system".
The max # of threads is capped at: `ZSTDMT_NBWORKERS_MAX==200`.
The max # of threads is capped at `ZSTDMT_NBWORKERS_MAX`,
which is either 64 in 32-bit mode, or 256 for 64-bit environments.
This functionality can be useful when `zstd` CLI is invoked in a way that doesn't allow passing arguments.
One such scenario is `tar --zstd`.