svn commit: r353937 - in head/share: man/man5 mk

[Alexey Dokuchaev]

On Tue, Oct 29, 2019 at 08:04:07AM +0100, Dimitry Andric wrote:
> On 27 Oct 2019, at 17:59, Alexey Dokuchaev <danfe at FreeBSD.org> wrote:
> > 
> > On Sat, Oct 26, 2019 at 04:34:14PM +0200, Dimitry Andric wrote:
> ...
> >> I only tested -j24 on a 32-core system, but I could probably repeat the
> >> experiment with lower and higher -j values: [...]
> >> 
> >> So ~2.3% difference in real time, which is not too bad I think.
> > 
> > Well, I'd say it's acceptable. :-/
> 
> I also tested at low (-j4) and high (-j32) levels.  It turns out that at
> low -j levels, the difference is less pronounced, just ~1.1% in real
> time.  And at high -j levels, it is more pronounced, ~4.3% in real time.
> 
> Note also that at high -j levels, the difference in system time seems
> to get more influence, e.g. at low -j the difference is ~4.5%, while at
> high -j the difference is ~7.2%.  I guess it is because dynamic linking
> uses more syscalls.

Yeah, it would be definitely nice if we could optimize runtime linker.
Thanks for conducting these tests by the way, much appreciated, Dimitry!

./danfe