On Tue, Apr 18, 2023 at 04:52:32PM -0300, Fabiano Rosas wrote:
> Daniel P. Berrangé <berra...@redhat.com> writes:
>
> > There are 27 pre-copy live migration scenarios being tested. In all of
> > these we force non-convergance and run for one iteration, then let it
> > converge and wait for completion during the second (or following)
> > iterations. At 3 mbps bandwidth limit the first iteration takes a very
> > long time (~30 seconds).
> >
> > While it is important to test the migration passes and convergance
> > logic, it is overkill to do this for all 27 pre-copy scenarios. The
> > TLS migration scenarios in particular are merely exercising different
> > code paths during connection establishment.
> >
> > To optimize time taken, switch most of the test scenarios to run
> > non-live (ie guest CPUs paused) with no bandwidth limits. This gives
> > a massive speed up for most of the test scenarios.
> >
> > For test coverage the following scenarios are unchanged
> >
> > * Precopy with UNIX sockets
> > * Precopy with UNIX sockets and dirty ring tracking
> > * Precopy with XBZRLE
> > * Precopy with multifd
> >
> > Signed-off-by: Daniel P. Berrangé <berra...@redhat.com>
>
> ...
>
> > - qtest_qmp_eventwait(to, "RESUME");
> > + if (!args->live) {
> > + qtest_qmp_discard_response(to, "{ 'execute' : 'cont'}");
> > + }
> > + if (!got_resume) {
> > + qtest_qmp_eventwait(to, "RESUME");
> > + }
>
> Hi Daniel,
>
> On an aarch64 host I'm sometimes (~30%) seeing a hang here on a TLS test:
>
> ../configure --target-list=aarch64-softmmu --enable-gnutls
>
> ... ./tests/qtest/migration-test --tap -k -p
> /aarch64/migration/precopy/tcp/tls/psk/match
I never came to a satisfactory understanding of why this problem hits
you. I've just sent out a new version of this series, which has quite
a few differences, so possibly I've fixed it by luck.
So if you have time, I'd appreciate any testing you can try on
https://lists.gnu.org/archive/html/qemu-devel/2023-04/msg03688.html
With regards,
Daniel
--
|: https://berrange.com -o- https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org -o- https://fstop138.berrange.com :|
|: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|
