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| author | the8472 <the8472@users.noreply.github.com> | 2022-07-22 22:18:07 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-07-22 22:18:07 +0200 |
| commit | 2e33c812e8b1bea563893f17ff5edcb7023d5d41 (patch) | |
| tree | b9c882c33a6917c67b4055ca7975bd195d6e470d /library/std/src/thread | |
| parent | b2c410ec572de2e0f3b0b2af0fc6546d0bcd626b (diff) | |
| download | rust-2e33c812e8b1bea563893f17ff5edcb7023d5d41.tar.gz rust-2e33c812e8b1bea563893f17ff5edcb7023d5d41.zip | |
[review] mention that runtime may scale with # of mountpoints
Co-authored-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'library/std/src/thread')
| -rw-r--r-- | library/std/src/thread/mod.rs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/library/std/src/thread/mod.rs b/library/std/src/thread/mod.rs index f02a7de04e5..add93b618a6 100644 --- a/library/std/src/thread/mod.rs +++ b/library/std/src/thread/mod.rs @@ -1575,6 +1575,11 @@ fn _assert_sync_and_send() { /// queried, e.g. due to sandboxing. /// - It may undercount the amount of parallelism if the current thread's affinity mask /// does not reflect the process' cpuset, e.g. due to pinned threads. +/// - If the process is in a cgroup v1 cpu controller, this may need to +/// scan mountpoints to find the corresponding cgroup v1 controller, +/// which may take time on systems with large numbers of mountpoints. +/// (This does not apply to cgroup v2, or to processes not in a +/// cgroup.) /// /// On all targets: /// - It may overcount the amount of parallelism available when running in a VM |