Use of contiguous physical memory in cxgbe driver

[Adrian Chadd]

On 12 February 2014 11:46, John Baldwin <jhb at freebsd.org> wrote:

> Is this because UMA keeps lots of mbufs cached in your workload?  The physmem
> buddy allocator certainly seeks to minimize fragmentation.  However, it can't
> go yank memory out of UMA caches to do so.

I'll ask you on irc, but where's that happening? My read of the code
is that once it grabs a larger page and fragments it, it's lost.


-a