Re: [PATCH v2] migration/ram: Yield periodically to the main loop

[Juan Quintela]

Juan Quintela <address@hidden> wrote:
> Yury Kotov <address@hidden> wrote:
>> Usually, incoming migration coroutine yields to the main loop
>> while its IO-channel is waiting for data to receive. But there is a case
>> when RAM migration and data receive have the same speed: VM with huge
>> zeroed RAM. In this case, IO-channel won't read and thus the main loop
>> is stuck and for instance, it doesn't respond to QMP commands.
>>
>> For this case, yield periodically, but not too often, so as not to
>> affect the speed of migration.
>>
>> Signed-off-by: Yury Kotov <address@hidden>
>
> Reviewed-by: Juan Quintela <address@hidden>

Nack.

The idea is good.  But it fails migration-test to fail from time to time
(50% of the time on my laptop).

Will investigate why this is failing.

Later, Juan.