Peter Zijlstra [off-list ref] wrote:

removing
that sysconf() wreckage closed the gap considerably (needing to know
the
number of cpus to optimize locking sounds like a trainwreck all of its
own, needing it _that_ often instead of just once at startup is even
worse).

Yeah, I think it's ridiculous to say that glibc is not doing something stupid and that it's a problem with kernel interfaces.

Do the proc file parsing once and cache the result in a static variable. Doing it over and over again is just crazy.

Adding new system calls because glibc is crazy is insane.

       Linus

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