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Subject: Re: Use of contiguous physical memory in cxgbe driver
From: Adrian Chadd <adrian@freebsd.org>
To: John Baldwin <jhb@freebsd.org>
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Cc: FreeBSD Net <freebsd-net@freebsd.org>,
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On 12 February 2014 11:46, John Baldwin <jhb@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