Hi,
On Tue, May 17, 2016 at 04:25:35PM +0200, Markus Mohrhard wrote:
Did you by chance have an opportunity to also ran "make" from scratch on
that machine? I assume/hope it wont take the 70 min + 11 min = 82 min. a
straight addition would make one assume, because make will use idle job slots
during a full build.
real 83m37.618s
user 493m30.052s
sys 29m44.404s
Ah ok, so these add up pretty linear in both user and real.
And then the following time make (therefore again only executing tests):
real 9m16.741s
user 45m31.208s
sys 0m37.516s
Thats interesting as it should be comparable with:
real 6m37.479s
user 45m4.740s
and while it is for CPU time it isnt for wall time by a factor of 50%. So seems
we have quite some variance here ...
P.S.: For reference, the output of "time make build-nocheck" would be
helpful too (aka a noop incremental build time overhead in make/dep parsing
etc.)
real 0m38.787s
user 0m16.300s
sys 0m0.896s
Expected I guess -- and it seems heavily I/O bound, this is single threaded
and the CPU is waiting 2/3rds of the time.
Thanks for the additional numbers!
Best,
Bjoern
Context
- Re: Some thoughts about our tests and the build time (continued)
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