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Re: Apple Catalina Appears to Introduce Massive Jitter - SOLVED!
From: Doug Barton <dougb () dougbarton us>
Date: Fri, 30 Oct 2020 14:57:08 -0700
I would hesitate to blame BT. I have a macbook pro from ~1 year ago, on Catalina, and I use BT extensively ... mouse, keyboard, and headset. I do have location services trimmed down to just find my mac.
I ran: ping -c 1000 -i 0.1 <router address> 1000 packets transmitted, 998 packets received, 0.2% packet loss round-trip min/avg/max/stddev = 1.255/2.378/9.095/0.634 msOne thing that may contribute to blaming BT however is if you are using wifi on 2.4G only, and/or preferring it, as BT operates in the same frequency range neighborhood. My macbook is connected using 5G.
Happy to compare other settings if there is interest. Doug On 10/30/20 12:08 PM, Mark Tinka wrote:
Hi all.So I may have fixed this for my end, and hopefully others may be able to use the same fix.After a tip from Karl Auerbach and this link: https://developer.apple.com/forums/thread/97805 ... I was able to fix the problem by disabling Bluetooth.However, disabling Bluetooth was not enough. I also had to disable all Location Services.After that, I re-enabled Location Services and only allowed for two features:- NetSpot - Find My MacWith just those two location services, as well as Bluetooth disabled, I have no more high jitter.App performance like Zoom and Youtube uploads are now crisp, with 0.0% packet loss.So looks like that Bluetooth is a huge problem. Confirmed by opening the "Console" app, and adding "scan" in the filter bar, top right.A peak latency of 13.5ms after 300 packets: Marks-MacBook-Pro.local (172.16.0.239) 2020-10-30T21:06:05+0200 Keys: Help Display mode Restart statistics Order of fields quit Packets Pings Host Loss% Snt Last Avg Best Wrst StDev 1. 172.16.0.254 0.0% 300 3.1 4.8 2.2 13.5 1.9 Mark.
Current thread:
- Re: Apple Catalina Appears to Introduce Massive Jitter, (continued)
- Re: Apple Catalina Appears to Introduce Massive Jitter Mark Tinka (Oct 29)
- Re: Apple Catalina Appears to Introduce Massive Jitter Cory Sell via NANOG (Oct 30)
- Re: Apple Catalina Appears to Introduce Massive Jitter Mark Tinka (Oct 29)
- Re: Apple Catalina Appears to Introduce Massive Jitter J. Hellenthal via NANOG (Oct 29)
- Re: Apple Catalina Appears to Introduce Massive Jitter J. Hellenthal via NANOG (Oct 29)
- Re: Apple Catalina Appears to Introduce Massive Jitter Niels Bakker (Oct 29)
- Re: Apple Catalina Appears to Introduce Massive Jitter Mark Tinka (Oct 29)
- Re: Apple Catalina Appears to Introduce Massive Jitter David Curado (Oct 30)
- Re: Apple Catalina Appears to Introduce Massive Jitter Mark Tinka (Oct 29)
- Re: Apple Catalina Appears to Introduce Massive Jitter - SOLVED! Mark Tinka (Oct 30)
- Re: Apple Catalina Appears to Introduce Massive Jitter - SOLVED! Doug Barton (Oct 30)
- Re: Apple Catalina Appears to Introduce Massive Jitter - SOLVED! J. Hellenthal via NANOG (Oct 30)
- Re: Apple Catalina Appears to Introduce Massive Jitter - SOLVED! Mark Tinka (Oct 31)
- Re: Apple Catalina Appears to Introduce Massive Jitter - SOLVED! Mark Tinka (Oct 31)
- Re: Apple Catalina Appears to Introduce Massive Jitter - SOLVED! Aaron Atac via NANOG (Oct 30)
- Re: Apple Catalina Appears to Introduce Massive Jitter colin johnston (Oct 29)
- Re: Apple Catalina Appears to Introduce Massive Jitter colin johnston (Oct 29)
- Re: Apple Catalina Appears to Introduce Massive Jitter Mark Tinka (Oct 29)
- Re: Apple Catalina Appears to Introduce Massive Jitter Mark Tinka (Oct 29)
- Re: Apple Catalina Appears to Introduce Massive Jitter Aaron C. de Bruyn via NANOG (Oct 29)
- Re: Apple Catalina Appears to Introduce Massive Jitter Peter Beckman (Oct 29)