Re: GNU make 3.99.92 release candidate is available

[Paul Smith]

On Wed, 2013-09-25 at 12:14 +0200, Boris Kolpackov wrote:
> I just got a new box setup for development and was shocked to find
> out that make 3.99.XX is about 50% slower than on my old box.

I'm not sure I fully understood the situation.

This comment makes it sound like same version of make (same code) is 50%
slower on the new system.  Is that what you meant?

> Needless to say, this is bad news for me since now I have to wait
> longer for make to even start the compilation. So any ideas here
> are welcome.

Obviously there's not much we can do ourselves, if it's not a differnce
in the make code.  You'll have to do some testing.  Use perf, or compile
with gprof support, or similar, and try to figure out where the slowdown
is happening.

If it's truly that the same make binary takes 50% longer on one system
than the other, especially on do-nothing builds, I would suggest
checking out the filesystem and disk differences.  The only really
variable thing in a do-nothing make build is the amount of time it takes
to stat all the files.