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cpu: Set number of threads to number of cores

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Cap this to 2 threads always because we need a low and high priority
thread even with a single core.

Fixes #40713

Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit is contained in:
David Goulet 2022-11-23 13:40:47 -05:00
parent 8713d9762a
commit b9de73e46e
2 changed files with 5 additions and 1 deletions
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4
changes/ticket40713 Normal file
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@ -0,0 +1,4 @@
o Minor feature (cpuworker):
- Always use the number of threads for our CPU worker pool to the number of
core available but cap it to a minimum of 2 in case of a single core.
Fixes bug 40713; bugfix on 0.3.5.1-alpha.

2
src/core/mainloop/cpuworker.c
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@ -129,7 +129,7 @@ cpu_init(void)
always make sure we have at least two threads, so that there will be at
least one thread of each kind.
*/
const int n_threads = get_num_cpus(get_options()) + 1;
const int n_threads = MAX(get_num_cpus(get_options()), 2);
threadpool = threadpool_new(n_threads,
replyqueue,
worker_state_new,