[Libguestfs] [PATCH v2 0/7] tests/qemu: Add program for tracing and analyzing boot times.

[Richard W.M. Jones]

v1 was here:

  https://www.redhat.com/archives/libguestfs/2016-March/thread.html#00157

Not running the 'hwclock' command reduces boot times considerably.
However I'm not sure if it is safe.  See the question I posted on
qemu-devel:

  http://thread.gmane.org/gmane.comp.emulators.qemu/402194

At the moment, about 50% of the time is consumed by SeaBIOS.  Of this,
about ⅓rd is SGABIOS (it contains a useless ¼s sleep waiting for a
keypress ... ffs!), and the other ⅔rds is something else in SeaBIOS.
Simply removing SGABIOS improves boot times to below 2s, but at a cost
that we cannot see any messages from SeaBIOS so further measurement
and therefore improvement becomes impossible.  I'm going to try to fix
SeaBIOS/SGABIOS first.  See also:

  http://thread.gmane.org/gmane.comp.emulators.qemu/402196

Rich.