Re: system 20% busy at all times?

Hi,

On Feb 19, 2013, at 17:58, Adrian Chadd <adrian_at_freebsd.org> wrote:
> Try top -HS .. to try and break down the kernel threads.

ACPI is eating the cycles, according to top:

    0 root         8    0     0K   496K -       2   1:13 27.88% kernel{acpi_task_2}
    0 root         8    0     0K   496K -       0   1:13 25.68% kernel{acpi_task_1}
    0 root         8    0     0K   496K CPU1    1   1:07 23.68% kernel{acpi_task_0}

I got an off-list hint that the machine in question requires "device mptable" instead of relying on ACPI. I will try that.

As for dtrace, a complete buildworld/installworld cycle didn't change things, I still get:

# dtrace -n 'syscall:::entry { _at_num[execname] = count(); }'
dtrace: invalid probe specifier syscall:::entry { _at_num[execname] = count(); }: "/usr/lib/dtrace/psinfo.d", line 90: failed to resolve type kernel`struct thread * for identifier curthread: Module is no longer loaded

Thanks for all the help!

Lars