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Date: Thu, 8 Dec 2016 11:06:56 +0000
From: Mel Gorman <mgorman@techsingularity.net>
To: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Christoph Lameter <cl@linux.com>, Michal Hocko <mhocko@suse.com>,
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        Joonsoo Kim <iamjoonsoo.kim@lge.com>, Linux-MM <linux-mm@kvack.org>,
        Linux-Kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mm: page_alloc: High-order per-cpu page allocator v7
Message-ID: <20161208110656.bnkvqg73qnjkehbc@techsingularity.net>
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On Thu, Dec 08, 2016 at 11:43:08AM +0100, Jesper Dangaard Brouer wrote:
> > That's expected. In the initial sniff-test, I saw negligible packet loss.
> > I'm waiting to see what the full set of network tests look like before
> > doing any further adjustments.
> 
> For netperf I will not recommend adjusting the global default
> /proc/sys/net/core/rmem_default as netperf have means of adjusting this
> value from the application (which were the options you setup too low
> and just removed). I think you should keep this as the default for now
> (unless Eric says something else), as this should cover most users.
> 

Ok, the current state is that buffer sizes are only set for netperf
UDP_STREAM and only when running over a real network. The values selected
were specific to the network I had available so milage may vary.
localhost is left at the defaults.

-- 
Mel Gorman
SUSE Labs