[Audit-test-developer] suite speedups, test fixes, generic suite improvements

[Jiri J. <jja...@re...>]

Hi,
yet another batch of changes from our team is here.

This time, it's mostly about making the suite faster, with related
changes all around the idea. Aside from those, a new "make rerun"
feature is included, which re-runs only non-PASSed tests, along with
a few generic fix-ups.

There are several important things I'd like to point out.
First, the discussed issue of "making lblnet_tst_server inetd-only"
no longer exists, I managed to create a solution which retains the
original standalone daemon functionality, second, the
"TCP RST related tests" change is included, and third, there's one
more similar change in this patchset I would like to point out
explicitly - patch 15. I'd really like some comments on that one.

All changes are RHEL-6.2 compatible, I've tested both base and mls
runs of the suite without fails or errors.


Since this patch series is mainly about suite speedups, I should
probably provide some benchmarks. When trying to generate those,
I encountered an issue with tcp_syn_retries behaving differently
on RHEL6.2, RHEL6.3+ and RHEL7 (described in patch 04), so I had
to do three separate runs.
The following is a "time make run" of the three networking-related
buckets combined (network, netfilter, netfilebt):

RHEL6.2,  default tcp_syn_retries, upstream suite = 101 minutes
RHEL6.2,  default tcp_syn_retries, patched suite  = 43  minutes
RHEL6.2,  custom  tcp_syn_retries, patched suite  = 37  minutes

RHEL6.3+, default tcp_syn_retries, upstream suite = 118  minutes
RHEL6.3+, default tcp_syn_retries, patched suite  = 69  minutes
RHEL6.3+, custom  tcp_syn_retries, patched suite  = 37  minutes

and based on known default value of tcp_syn_retries on RHEL7, we can
simulate a RHEL7 full-pass run on RHEL6.3+:

(RHEL7),  default tcp_syn_retries, upstream suite = 136 minutes
(RHEL7),  default tcp_syn_retries, patched suite  = 90  minutes
(RHEL7),  custom  tcp_syn_retries, patched suite  = 37  minutes

IOW, this patchset speeds up things on RHEL6.2 by 64 minutes,
on RHEL6.3+ by 81 minutes and on RHEL7 by 99 minutes (or 1h39m),
counting only the networking-related buckets, on our hardware.
More speed improvements come from patches 07 and 22.


Please see commit messages of respective patches for more information,
the patches are attached via In-Reply-To/References to this mail.

Thanks for the review,
Jiri