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

[Philippe Mathieu-Daudé]

On 6/23/20 7:07 PM, Thomas Huth wrote:
> On 23/06/2020 17.39, Philippe Mathieu-Daudé wrote:
>> On 6/23/20 4:56 PM, 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.
>>
>> Please also mention we can do this since 1de8e4c4dcf which allow
>> marked the s390x job as "unstable" and allow it to fail.
>>
>> But if nobody is going to look at it, instead lets disable
>> it until someone figure out the issue:
>>
>> -- >8 --
>> diff --git a/.travis.yml b/.travis.yml
>> index 74158f741b..364e67b14b 100644
>> --- a/.travis.yml
>> +++ b/.travis.yml
>> @@ -507,6 +507,7 @@ jobs:
>>
>>      - name: "[s390x] Clang (disable-tcg)"
>>        arch: s390x
>> +      if: false # Temporarily disabled due to issue testing migration
>> (see commit 6d1da867e65).
>>        dist: bionic
>>        compiler: clang
>>        addons:
> 
> Sorry, but that looks wrong. First, the disable-tcg test does not run
> the qtests at all. So this is certainly the wrong location here.

Indeed, this is the previous job:

-- >8 --
diff --git a/.travis.yml b/.travis.yml
index 74158f741b..b399e20078 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -464,6 +464,7 @@ jobs:
         - CONFIG="--disable-containers
--target-list=ppc64-softmmu,ppc64le-linux-user"

     - name: "[s390x] GCC check-tcg"
+      if: false # Temporarily disabled due to issue testing migration
(see commit 6d1da867e65).
       arch: s390x
       dist: bionic
       addons:
---

> Second,
> if just one of the qtests is failing, please only disable that single
> failing qtest and not the whole test pipeline.

Last time we talked about this Dave was against that option:

https://www.mail-archive.com/qemu-devel@nongnu.org/msg690085.html