Bad Max jitter / Latency
15 Jan 2022 10:12 #231880
by remon_v
Bad Max jitter / Latency was created by remon_v
Hello,
I wanted to try LinuxCNC, so I bought myself a Chinese BOB and a nice small PC with paralllel port (Asrock Q1900B-ITX) but my latency is (very) bad.
when I run the test I see ‘last interval’ around 25000, but the max jitter is over 200.000.
Is my PC so bad or is this fixable somehow?
I wanted to try LinuxCNC, so I bought myself a Chinese BOB and a nice small PC with paralllel port (Asrock Q1900B-ITX) but my latency is (very) bad.
when I run the test I see ‘last interval’ around 25000, but the max jitter is over 200.000.
Is my PC so bad or is this fixable somehow?
Please Log in or Create an account to join the conversation.
- tommylight
-
- Away
- Moderator
-
Less
More
- Posts: 19196
- Thank you received: 6434
15 Jan 2022 10:23 #231882
by tommylight
Replied by tommylight on topic Bad Max jitter / Latency
Try the Debian 7 Wheezy from
linuxcnc.org/downloads/
linuxcnc.org/downloads/
The following user(s) said Thank You: remon_v
Please Log in or Create an account to join the conversation.
15 Jan 2022 20:57 - 15 Jan 2022 21:12 #231929
by remon_v
Replied by remon_v on topic Bad Max jitter / Latency
I think I fixed it now.. with the following edit (still on Debian 10):
GRUB_CMDLINE_LINUX_DEFAULT="quiet isolcpus=1,2,3"
Now the max jitter is below 15.000 ns
GRUB_CMDLINE_LINUX_DEFAULT="quiet isolcpus=1,2,3"
Now the max jitter is below 15.000 ns
Last edit: 15 Jan 2022 21:12 by remon_v.
The following user(s) said Thank You: rodw
Please Log in or Create an account to join the conversation.
Time to create page: 0.065 seconds