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kn
33 lines
759 B
Plaintext
33 lines
759 B
Plaintext
Cap the maximum number of detected cores to 4; on many-cpu systems, kernel
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locking takes significant cpu time. This could be revised as SMT in OpenBSD
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improves, and the value can be overridden in /etc/gitconfig if needed e.g.
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[grep]
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threads = 8
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[index]
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threads = 8
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[pack]
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threads = 8
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Index: thread-utils.c
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--- thread-utils.c.orig
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+++ thread-utils.c
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@@ -18,6 +18,8 @@
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# endif
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#endif
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+#define MIN(a,b) (((a)<(b))?(a):(b))
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+
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int online_cpus(void)
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{
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#ifdef NO_PTHREADS
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@@ -53,7 +55,7 @@ int online_cpus(void)
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# endif /* HW_AVAILCPU */
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len = sizeof(cpucount);
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if (!sysctl(mib, 2, &cpucount, &len, NULL, 0))
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- return cpucount;
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+ return MIN(cpucount, 4);
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#endif /* defined(HAVE_BSD_SYSCTL) && defined(HW_NCPU) */
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#ifdef _SC_NPROCESSORS_ONLN
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