High interrupts?
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Hi all!
I configured latest release 2.0.1 pfsense.
For 2 days it was working just fine, now all of the sudden I have very high interrupts.
From 34-60%…vmstat -i shows:
interrupt total rate irq4: uart0 7361324 24702 irq16: fxp0 fxp1 3558 11 irq17: fxp2 fxp3 3287 11 irq20: atapci0 3249 10 irq21: uhci0 uhci1* 23 0 cpu0: timer 593503 1991 Total 7964944 26728
Is uart0 the problem here?
This is serial output right?There is almost no traffic on firewall…
Maybe 10-40 Kbps...It was all working fine for 2 days... Today in the morning bam, interrupts were sky high....
Any idea what should I do?
Thanks!
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24k interrupts per second is a high rate, especially for a serial port. Maybe you can disable the COM ports in the BIOS. Does the COM port have a cable connected? Maybe the cable is picking up noise on the UART Rx line and that is causing interrupts.
Maybe you could set the UART speed to a much lower value and that should correspondingly reduce the interrupt rate.
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Hi!
Thanks for suggestion.
I only have:
1. VGA cable connected
2. 3x LAN conncted (2nics in lagg0 for LAN, one nic for other network)
3. 1x WAN connected
4. USB keyboardI`m looking at this from remote location…
Console is not connected... -
What does @maverick_slo:
Console is not connected…
mean? You are using a serial port as the system console but it is not connected?
Please provide output of pfSense shell command```
sysctl kern.tty_nout; sleep 60; sysctl kern.tty_nout
sysctl kern.tty_nin ; sleep 60; sysctl kern.tty_ninDoes the pfSense _top_ command show a high percentage of time in interrupts?
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Huh…
I use VGA and keyboard :)
I should disable Serial port probably since I do not use it...Out: kern.tty_nout: 721880 kern.tty_nout: 721903 and in: kern.tty_nin: 459 kern.tty_nin: 459
last pid: 41605; load averages: 0.78, 0.99, 0.93 up 0+03:04:59 13:49:14 42 processes: 1 running, 41 sleeping CPU: 0.4% user, 0.0% nice, 0.4% system, 58.0% interrupt, 41.3% idle Mem: 41M Active, 17M Inact, 42M Wired, 968K Cache, 25M Buf, 866M Free Swap: 8192M Total, 8192M Free
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Out: kern.tty_nout: 721880 kern.tty_nout: 721903 and in: kern.tty_nin: 459 kern.tty_nin: 459
Lots of uart interrupts that aren't accompanied by tty input characters or output characters uggests to me a noisy uart Rx line.
I should disable Serial port probably since I do not use it…
I think so.
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So basically this should resolve this issue right?
But still… Console port is not plugged anywhere... Strange that this started to happen today...
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Yeah, I disabled console and all com ports, now it`s working great…
Thanks for support!