Re: Apple Catalina Appears to Introduce Massive Jitter

[Mike Hammett <nanog () ics-il net>]

Have you ruled out local wireless issues, such as a literal side-by-side test? 


Does the problem still exist when wired? 




----- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 

----- Original Message -----

From: "Mark Tinka" <mark.tinka () seacom com> 
To: "Matt Hoppes" <mattlists () rivervalleyinternet net> 
Cc: "NANOG" <nanog () nanog org> 
Sent: Thursday, October 29, 2020 7:31:59 AM 
Subject: Re: Apple Catalina Appears to Introduce Massive Jitter 



On 10/29/20 14:27, Matt Hoppes wrote: 

> Is it actually jitter or is it potentially the wireless network card 
> going into sleep mode? I have seen that type of behavior on Apple 
> products when the cards go into low power mode although I can’t say I 
> have noticed that on my laptop. 

Not, not sleep mode, because I am actively using the device to move data 
to/from the Internet. 

I was actually struggling to upload some files to Youtube last weekend, 
and had to use another computer to do it as I couldn't figure out what 
was going on. That it is how bad the jitter is. 

It seems to be a much bigger problem for the upload direction than the 
download, but it, inevitably creates a symmetrical performance problem. 

Mark.