Re: [PATCH] oom: add sysctl to enable slab memory dump

[David Rientjes]

On Fri, 24 Feb 2012, Josef Bacik wrote:

> Um well yeah, I'm rewriting a chunk of btrfs which was rapantly leaking memory
> so the OOM just couldn't keep up with how much I was sucking down.  This is
> strictly a developer is doing something stupid and needs help pointing out what
> it is sort of moment, not a day to day OOM.
>  

If you're debugging new kernel code and you realize that excessive amount 
of memory is being consumed so that nothing can even fork, you may want to 
try cat /proc/slabinfo before you get into that condition the next time 
around, although I already suspect that you know the cache you're leaking.  
It doesn't mean we need to add hundreds of lines of code to the kernel.  
Try kmemleak.
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