Re: Increases in build system time

[Andreas Gustafsson <gson%gson.org@localhost>]

Michael van Elst wrote:
> gson%gson.org@localhost (Andreas Gustafsson) writes:
> 
> >mitigations, which I guess is not really surprising.  But the 12% net
> >increase from jemalloc and the 7% increase from vfs_vnode.c 1.63 seem
> >to call for closer investigation.
> 
> Is this also reflected in real time?

Only partly.  With the jemalloc change, the system time increased by
938 seconds, but the real time only increased by 170 seconds, and the
user time decreased by 89 seconds:

  2019.03.08.20.34.24/build_8.log.gz:     4229.21 real     16686.03 user      7932.08 sys
  2019.03.08.20.35.10/build_8.log.gz:     4398.88 real     16597.25 user      8870.49 sys

With the vfs_vnode.c change, the system time increased by 305 seconds,
but the real time only increased by 35 seconds:

  2016.12.14.15.48.55/build_8.log.gz:     3934.44 real     15707.68 user      4243.02 sys
  2016.12.14.15.49.35/build_8.log.gz:     3969.58 real     15718.85 user      4548.50 sys

-- 
Andreas Gustafsson, gson%gson.org@localhost