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SubjectRe: ext4 memory leak?
On Tue, Dec 07, 2010 at 11:21:20PM +0800, Wu Fengguang wrote:
> On Tue, Dec 07, 2010 at 10:33:51PM +0800, Wu Fengguang wrote:
> > > In a simple dd test on a 8p system with "mem=256M", I find the light
> >
> > When increasing to 10 concurrent dd tasks, I managed to crash ext4..
> > (2 concurrent dd's are OK, with very good write performance.)

What was the dd command line? Specifically, how big were the file
writes? I haven't been able to replicate a leak. I'll try on a small
system seeing if I can replicate an OOM kill, but I'm not seeing a
leak. (i.e., after the dd if=/dev/zero of=/test/$i" jobs) are
finished, the memory utilization looks normal and I don't see any
obvious slab leaks.

- Ted


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