topic Re: wait channel in Operating System - HP-UX

wait channel

Marc Bohnert — Thu, 25 Oct 2001 20:18:08 GMT

HPUX 10.20 kernel

I do a ps -el and get the value from the "WCHAN" column. I would like to know if I can use this vlue to determine what event the associated process is waiting on. What can I do with that value. Can I find it in the kernel address space. Do I have to convert it to something else to be able to locate it in the kernel. Can I run adb /stand/vmunix /dev/kmem and reference it.

Thank you
Marc Bohnert
mbohnert@medplus.com

Re: wait channel

Sridhar Bhaskarla — Thu, 25 Oct 2001 21:22:42 GMT

The one that you see is nothing but a kernel address. I suppose you can get some information from it but I am afraid if you can be able to make anything out of it.

echo "thisaddress/D" |adb -k /stand/vmunix /dev/kmem

-Sri

Re: wait channel

Romeo_Lou — Thu, 15 Apr 2004 04:19:30 GMT

Dear,
I just run some as below, but why always "not found"???

root:>echo "8857f46e/D" |adb -k /stand/vmunix /dev/kmem
8857F46E:
data address not found

root:>echo "ad7380/D" |adb -k /stand/vmunix /dev/kmem
symbol not found

root:>echo "ad73c0/D" |adb -k /stand/vmunix /dev/kmem
symbol not found