4 ms·
Critical sections are unfair also. Could be differences in spin count you are seeing.
by NeillC 3y ago
Critical sections are unfair also. Could be differences in spin count you are seeing.
- Tringi 3y agoSome time ago I did some test, 256 threads competing on a small number of cache lines, and found out that all, CreateMutex, CRITICAL_SECTION and SRWLOCK, were quite fair. The most successful thread was only 25%, 15% and 9% ahead of the least successful one. On the contrary, in my simple usermode spinlock the unfairness would be 1000% or even 2000%.