Hi staff.
I have many systems with INTEL DQ57TM motherboards and 8.2-RELEASE-p9 and something of that has IRQ rate problems.
As you can see:
(I read many threads in this forum about ehci0 problems and a PR onfreebsd FreeBSD's bugtrack systems but not one solves my situation.)
I can't recompile the kernel. I can't do the upgrade to 8.3 or 9.x so I played with sysctl (in loader.conf) and BIOS changes but none worked. After several tests I found a workaround. If I boot the system WITHOUT VGA and USB keyboard connected, I can see:
and
It seems to work! But if I connect VGA or keyboard, the IRQ percentage fires up to 50% and I need to reboot to remove this state.
I hope this message can be a (little) help for someone.
See you.
I have many systems with INTEL DQ57TM motherboards and 8.2-RELEASE-p9 and something of that has IRQ rate problems.
As you can see:
Code:
[CMD]vmstat -i[/CMD]
interrupt total rate
irq16: ehci0 5593560975283 218059
irq19: atapci1 1859170078 72
irq23: ehci1 51303168 2
cpu0: timer 51303136367 2000
irq256: em0 22273614942 868
cpu1: timer 51303136241 2000
cpu2: timer 51303136241 2000
cpu3: timer 51303136241 2000
Total 5822957608561 227002
Code:
PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND
11 root 171 ki31 0K 64K CPU3 3 6938.8 100.00% {idle: cpu3}
11 root 171 ki31 0K 64K RUN 1 6555.8 100.00% {idle: cpu1}
11 root 171 ki31 0K 64K CPU0 0 6727.4 98.10% {idle: cpu0}
11 root 171 ki31 0K 64K CPU2 2 4903.6 66.16% {idle: cpu2}
12 root -64 - 0K 256K WAIT 2 2173.9 38.77% {irq16: ehci0}
(I read many threads in this forum about ehci0 problems and a PR on
I can't recompile the kernel. I can't do the upgrade to 8.3 or 9.x so I played with sysctl (in loader.conf) and BIOS changes but none worked. After several tests I found a workaround. If I boot the system WITHOUT VGA and USB keyboard connected, I can see:
Code:
PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND
11 root 171 ki31 0K 64K RUN 0 55:38 96.00% {idle: cpu0}
11 root 171 ki31 0K 64K CPU2 2 56:02 95.46% {idle: cpu2}
11 root 171 ki31 0K 64K CPU1 1 55:17 94.68% {idle: cpu1}
11 root 171 ki31 0K 64K CPU3 3 55:51 89.45% {idle: cpu3}
4637 89 48 0 11808K 6880K getblk 2 0:29 11.08% imapd
Code:
[CMD]ms4# vmstat -i[/CMD]
interrupt total rate
irq16: ehci0 2 0
irq19: atapci1 1056444 297
irq23: ehci1 2 0
cpu0: timer 7104349 1999
irq256: em0 266398 74
cpu1: timer 7104231 1999
cpu2: timer 7104230 1999
cpu3: timer 7104230 1999
Total 29739886 8370
It seems to work! But if I connect VGA or keyboard, the IRQ percentage fires up to 50% and I need to reboot to remove this state.
I hope this message can be a (little) help for someone.
See you.