Re: [Qemu-devel] [PULL 00/41] Migration queue

[Peter Maydell]

On 18 May 2018 at 11:19, Peter Maydell <address@hidden> wrote:
> On 11 May 2018 at 14:41, Peter Maydell <address@hidden> wrote:
>> Hi. I get some test failures here:
>>
>> S390x host:
>> TEST: tests/migration-test... (pid=57456)
>>   /ppc64/migration/deprecated:                                         OK
>>   /ppc64/migration/bad_dest:                                           OK
>>   /ppc64/migration/postcopy/unix:                                      OK
>>   /ppc64/migration/precopy/unix:                                       OK
>>   /ppc64/migration/xbzrle/unix:
>> Unexpected 32 on dest_serial serial
>> **
>> ERROR:/home/linux1/qemu/tests/migration-test.c:144:wait_for_serial:
>> code should not be reached
>> FAIL
>
> It turns out that this one is an intermittent that we've seen
> before (I just hit it again this morning on an unrelated test run
> on an x86-64 host, and last time it was on a ppc host).
> In this mail Laurent tracked it down to an overly optimistic
> setting for downtime-limit in migration-test.c:
> https://lists.gnu.org/archive/html/qemu-devel/2018-02/msg00107.html
>
> Can we push that up to something that we won't hit even if the
> test is being run on a machine that's under CPU load, please?

Also, it would be nice if the test reported failure to converge
with an error including the phrase "failed to converge" rather
than obscure stuff about serial :-)

thanks
-- PMM