std::chrono is much slower than native requests...?

[Paul Smith]

On Sat, 2019-07-06 at 18:29 +0300, Alexander Monakov wrote:
> ^ this is a problem, your libstdc++ library is configured to use the syscall
> directly instead of letting the libc go via the VDSO fastpath.

Oh snap!

I'm fully aware of the VDSO situation but I didn't grok the fact that
the syscall meant I wasn't using it.

Hm, this code is built with a sysroot designed to work on Red Hat EL
6.5 and newer systems; I suppose the RHEL 6.5 glibc must not have used
the clock_gettime VDSO (or if it did my GCC configure doesn't find it).

OK, that gives me a clear direction.

Thanks Alexander!