Thinkpad T14s Gen4 - Keyboard delay?

[DaLynX]

Hi,

I just installed freebsd on a Lenovo Thinkpad T14s Gen4 AMD.

I had to disable uart1 (hint.uart.1.disabled="1") and then was able to install, but from the installer on, the keyboard is slow. It takes 0,2 to 0,5 seconds to register me typing a key. And it misses some if I do not wait.

Any idea what could cause that and how to fix it?

 

[tingo]

Look for interrupt storms. There shouldn't be any, but you never know.

 

[DaLynX]

Oh. How does one do that?

 

[richardtoohey2]

top would be one way, trying to find a better way on FreeBSD:

CPU:  0.3% user,  0.0% nice,  0.5% system,  0.0% interrupt, 99.2% idle

EDIT: vmstat -i seems to be the thing to look at:

% vmstat -i
interrupt                          total       rate
irq9: acpi0                            1          0
irq16: ehci0                     1564901          1
irq23: ehci1                     2341139          2
cpu0:timer                      75661226         49
cpu1:timer                      74856638         48
cpu2:timer                      71215860         46
cpu3:timer                      71719662         46
irq32: nvme0:admin                    12          0
irq33: nvme0:io0                  293373          0
irq34: nvme0:io1                  325666          0
irq35: xhci0                     6069361          4
irq36: bge0                       641754          0
irq38: ahci0                     1282406          1
Total                          305971999        196