Re: [PATCH] Revert "tests/migration: Reduce autoconverge initial bandwidth"

[Thomas Huth <thuth@redhat.com>]

On 30/06/2020 15.07, Michael S. Tsirkin wrote:
> On Tue, Jun 23, 2020 at 10:57:02AM -0400, Michael S. Tsirkin wrote:
>> This reverts commit 6d1da867e65f ("tests/migration: Reduce autoconverge initial bandwidth")
>> since that change makes unit tests much slower for all developers, while it's not
>> a robust way to fix migration tests. Migration tests need to find
>> a more robust way to discover a reasonable bandwidth without slowing
>> things down for everyone.
>>
>> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> 
> What's the conclusion here? Should I merge this?

Fine for me (from the s390x side). The test should not run with TCG in 
the CI for s390x ... if it still does, we have to have another closer 
look at the check there instead.

  Thomas


> 
>> ---
>>   tests/qtest/migration-test.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/tests/qtest/migration-test.c b/tests/qtest/migration-test.c
>> index dc3490c9fa..21ea5ba1d2 100644
>> --- a/tests/qtest/migration-test.c
>> +++ b/tests/qtest/migration-test.c
>> @@ -1211,7 +1211,7 @@ static void test_migrate_auto_converge(void)
>>        * without throttling.
>>        */
>>       migrate_set_parameter_int(from, "downtime-limit", 1);
>> -    migrate_set_parameter_int(from, "max-bandwidth", 1000000); /* ~1Mb/s */
>> +    migrate_set_parameter_int(from, "max-bandwidth", 100000000); /* ~100Mb/s */
>>   
>>       /* To check remaining size after precopy */
>>       migrate_set_capability(from, "pause-before-switchover", true);
>> -- 
>> MST
> 
>