On 2020/2/14 19:46, Eric Blake wrote:
> On 2/13/20 9:27 PM, Keqian Zhu wrote:
>> At the tail stage of throttle, VM is very sensitive to
>> CPU percentage. We just throttle 30% of remaining CPU
>> when throttle is more than 80 percentage.
>>
>> This doesn't conflict with cpu_throttle_increment.
>>
>> This may make migration time longer, and is disabled
>> by default.
>>
>> Signed-off-by: Keqian Zhu <zhukeqi...@huawei.com>
>> ---
>> Cc: Juan Quintela <quint...@redhat.com>
>> Cc: "Dr. David Alan Gilbert" <dgilb...@redhat.com>
>> Cc: Eric Blake <ebl...@redhat.com>
>> Cc: Markus Armbruster <arm...@redhat.com>
>
>> +++ b/qapi/migration.json
>> @@ -532,6 +532,12 @@
>> # auto-converge detects that migration is not
>> making
>> # progress. The default value is 10. (Since 2.7)
>> #
>> +# @cpu-throttle-tailslow: Make throttle slower at tail stage
>> +# At the tail stage of throttle, VM is very
>> sensitive to
>> +# CPU percentage. We just throttle 30% of remaining
>> CPU
>> +# when throttle is more than 80 percentage. The
>> default
>> +# value is false. (Since 4.1)
>
> The next release is 5.0, not 4.1.
Thanks for reminding me.
>
Thanks,
Keqian
