On Tue, Jan 05, 2016 at 04:53:14PM -0800, Stephen Hemminger wrote: >> Also, I've never ever seen the actual context switch turn up high in a perf >> profile. Is this because of some sampling artifact? > Yes, especially with Intel processors getting more and more SSE/floating point > registers.
But those are not saved on context switch to the kernel, no? (Thus the rule of no floating-point in the kernel.) Only if you switch between userspace processes. /* Steinar */ -- Homepage: https://www.sesse.net/ _______________________________________________ Bloat mailing list [email protected] https://lists.bufferbloat.net/listinfo/bloat
