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

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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