[Bloat] Hardware upticks

[Steinar H. Gunderson]

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 */
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