Re: Extreme system overhead on large IP27

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On Tue, 24 Oct 2006 17:44:41 +0200 (CEST), "Karl-Johan Karlsson" <creideiki+linux-mips@xxxxxxxxxxxxx> wrote:

> 2. Timekeeping is broken. The clock in /proc/driver/rtc seems correct, but
> the system clock advances at about 1/16 of real time.

Is this problem still happen if you disabled CONFIG_OPROFILE ?

> 3. When booting, the kernel started, did a bit of initialization,
> restarted, and did everything all over again, this time going all the way.

It is not a problem.  Your log is usual ERALY_PRINTK behaviour.

>    [17179569.184000] Linux version 2.6.19-rc3 (root@viggen) (gcc version
> 4.1.1 (Gentoo 4.1.1)) #2 SMP Tue Oct 24 16:49:51 CEST 2006
>    [17179569.184000] ARCH: SGI-IP27
...
>    [17179569.184000] Using 1.250 MHz high precision timer.

These lines are printed by initial console driver (ioc3).

>    [17179569.184000] Linux version 2.6.19-rc3 (root@viggen) (gcc version
> 4.1.1 (Gentoo 4.1.1)) #2 SMP Tue Oct 24 16:49:51 CEST 2006
>    [17179569.184000] ARCH: SGI-IP27

And rest are printed by standard console driver (8250).

---
Atsushi Nemoto


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