Re: [PATCH] quieten OOM killer noise

[Daniel Walker <dwalker@mvista.com>]

On Mon, 4 Jul 2005, Anton Blanchard wrote:

> 
> Hi,
> 
> > Why not just remove the printk's when DEBUG_KERNEL is off. The problem
> > that I've found is that the latency in the system sky rockets when OOM
> > triggers. It's due to the excessive printk usage. 
> > 
> > I'm sure it's not ifdef'ed for a reason , but it would be nice to have an
> > easy way to silence it.
> 
> We've had customer situations where that information would have been
> very useful. Also DEBUG_KERNEL is enabled on some distros so it wouldnt
> help there.
> 
> Id suggest adding a printk level to the printks in mm/oom-kill.c and
> using /proc/sys/kernel/printk to silence them.

The latency problem stems from running printk, so I'm not sure that 
silencing them in this way would help . We could add a debug option just 
for this ? I'm sure OOM has other debugging output . CONFIG_OOM, and 
CONFIG_DEBUG_OOM .

Daniel  

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