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Re: Load Average >=1, mips kernel 2.6.10

To: Mandeep Ahuja <ahuja@aksysnetworks.com>
Subject: Re: Load Average >=1, mips kernel 2.6.10
From: Ralf Baechle <ralf@linux-mips.org>
Date: Tue, 22 Jul 2008 22:29:02 +0100
Cc: linux-mips@linux-mips.org
In-reply-to: <48863A41.2020303@aksysnetworks.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <48863A41.2020303@aksysnetworks.com>
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User-agent: Mutt/1.5.18 (2008-05-17)
On Tue, Jul 22, 2008 at 01:51:29PM -0600, Mandeep Ahuja wrote:

> I have an embedded system thats has mips processor. I recently updated  
> to Kernel 2.6.10 from 2.4.17.
> I was able to run the kernel and mount the jffs2 file system.
>
> When the system starts the load average is low like 0.02 but, after  
> about 2 minutes it becomes 1.00 and as long as the system is idle it  
> stays at 1.00. If the system is not idle it would go up to like 1.21 but  
> eventually come down  to 1.00 but NEVER goes below 1.
>
> There is no application running on the system. Only the busybox. Top  
> shows all processes sleeping.
>
> this is the version of kernel
> Linux version 2.6.10_dev-malta-mips2_fp_len (gcc version 3.4.6)
>
> Is there something holding the processor continuously? does anyone have  
> any idea whats going on?.
>
> I need to figure this one out before I start my application on it!.

Usually the reason would be something like a process stuck in
noninterruptible sleep state.  That's status "D" in the ps output.  Such
a process can't be killed and generally if a process is in this state for
extended time this would be considered a bug.

  Ralf

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