On 08/08/2017 04:04 AM, Vladimir Sementsov-Ogievskiy wrote:

>>>> Throttling "guaranties" that there will not be more than one
>>>> request. But
>>>> what prevent less than one, i.e. zero, like in my reproduction?
>>> Yes, I understand. Can we somehow make sure that at least one iteration
>>> is made? I'd really like to keep the functional test for block job
>>> throttling. I suppose a simple 'sleep 0.1' would do the trick, though
>>> it's not very clean.
>>> Kevin
>> I've started with 'sleep 0.5', now there are >100 successful
>> iterations... The other way is to check in test that there was 0 or 1
>> requests, but for this it looks better to rewrite it in python.
> is sleep for ms portable?

Sadly, sub-second sleep is a GNU coreutils feature; I suspect the BSD
machines may fail to parse it.  (Of course, we could do some sort of
'sleep $SMALL', where $SMALL is 0.5 if sleep supports it, and 1 otherwise).

Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

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