Do you know how it can be explained? piątek, 13 lutego 2026 o 17:18:49 UTC+1 r r napisał(a):
> Hi, > > let's look at the example: > > The system is running with the following kernel parameters: > > isolcpus=10, nohz_full=10, nohz=on, idle=poll, intel_pstate=disable. > > We have a thread *T* that uses Thread.onSpinWait() while polling a > lock-free shared queue. In this context, the *task interval* refers to > the time elapsed between adding consecutive tasks to the queue. > > When thread *T* is pinned to CPU #10 and the task interval is set to 1ms, > the average task execution time is *100 µs*. However, when the task > interval is increased to 40ms on the same pinned core, the average > execution time significantly degrades to *250 µs*. > > In contrast, when thread *T* is unpinned, the performance remains much > more consistent. At a 1ms task interval, the average execution time is *110 > µs*, and it only slightly increases to *120 µs* when the interval is > extended to 40ms. > -- You received this message because you are subscribed to the Google Groups "mechanical-sympathy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion, visit https://groups.google.com/d/msgid/mechanical-sympathy/0680ae97-fea7-46ca-b3d9-9cf563785c55n%40googlegroups.com.
