Hi Robert,

yes that is my guess but there also is this loop that steps all morphs
(clock, browsers.. ) so I just don't know and I'm not deep into the
innards of Squeak. Just a happy user. And I don't know how VNC handles
the display updates.

So let's wait for someone who knows.

Cheers,

Herbert

Am 13.07.2020 um 17:46 schrieb Robert via Squeak-dev:
> Hi Herbert,
>
> That 15+% cpu load at idle seems to indicate polling I/O, yes?
>
> Kindly,
> Robert
>
>
> On Mon, Jul 13, 2020 at 11:21, Herbert König <herbertkoenig at gmx.net
> <mailto:herbertkoenig at gmx.net>> wrote:
>> Hi Robert,
>>
>> I cannot directly reply but a datapoint:
>> On a PiZeroW an idle Squeak 5.3 uses 15+ % CPU. Also if the Window is
>> minimized. That does not look event driven but maybe tightvnc plays a
>> role here too.
>>
>> Otherwise it runs fine over months at 60 % CPU 24/7 on an A+ since
>> 2014. Outside between -20 and +40 ^C. That's 5.1 currently. I can
>> really recommend using Squeak on a Pi. Unless that constant CPU load
>> cannot be accepted.
>>
>> Cheers,
>>
>> Herbert
>>
>>
>>
>> Am 13.07.2020 um 16:02 schrieb Robert Withers via Squeak-dev:
>>>
>>> Hey y'all, there is a discussion thread on this article [1] about
>>> Smalltalk on a Pi. I commented pointing to Squeak on a Pi. Another
>>> commenter made this statement and I wish to respond.
>>>
>>>     I used a Squeak variant to test hardware and prototype UI ideas.
>>>     Ran like a champ on bare bones 68000, PPC & ARM boards.
>>>
>>>     The only critique I have of using Squeak out of the box is /it’s
>>>     original VM used polling for I/O/. I’m sure there are VMs by now
>>>     that don’t have this problem. And /message dispatch is a bit of
>>>     a pig/ in terms of power usage. But again, a properly JITted
>>>     Smalltalk VM should be fine. I would LOVE IT if Smalltalk or
>>>     Self became /popular for embedded work/.
>>>
>>> K, r
>>>
>>> ---
>>>
>>> [1] Making Smalltalk On A Raspberry Pi -
>>> https://hackaday.com/2020/07/12/making-smalltalk-on-a-raspberry-pi/
>>>
>>>
>>>
>>> On 7/13/20 9:45 AM, Robert Withers wrote:
>>>> Hello everyone!
>>>>
>>>> Does the current cog spur 64-it VM use polling I/O? Or is some other
>>>> mechanism used?
>>>>
>>>> Kindly,
>>>> rabbit
>>>>
>>>
>>
>
>
>

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