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Re: [Xen-devel] [PATCH net-next] xen-netfront: try linearizing SKB if it occupies too many slots

On Fri, May 16, 2014 at 07:21:08AM -0700, Eric Dumazet wrote:
> On Fri, 2014-05-16 at 14:11 +0100, Wei Liu wrote:
> > It's not that common to trigger this, I only saw a few reports. In fact
> > Stefan's report is the first one that comes with a method to reproduce
> > it.
> > 
> > I tested with redis-benchmark on a guest with 256MB RAM and only saw a
> > few "failed to linearize", never saw a single one with 1GB guest.
> Well, I am just saying. This is asking order-5 allocations, and yes,
> this is going to fail after few days of uptime, no matter what you try.

Hmm... I see what you mean -- memory fragmentation leads to allocation
failure. Thanks.


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