Re: Drastic jump in the time required for the test suite

From: Eric Wong <e@80x24.org>
Date: Oct 27, 2016, 20:41 UTC
Message-ID: <20161027204129.GA21619@starla>
In-Reply-To: <alpine.DEB.2.20.1610191049040.3847@virtualbox>

Johannes Schindelin <Johannes.Schindelin@gmx.de> wrote:

> I know you are a fan of testing things thoroughly in the test suite, but I
> have to say that it is getting out of hand, in particular due to our
> over-use of shell script idioms (which really only run fast on Linux, not
> a good idea for a portable software).

How much effort would it take to optimize a /bin/sh?

Would replacing uses of fork+execve posix_spawn be fast and portable enough?

Even on Linux, performance sucks for me. I've been hoping dash can use posix_spawn (or using vfork directly) to see if that can help things.

That won't help with subshells, though...

(I'm back to using a Centrino laptop from 2005)