From: "Jason A. Donenfeld" <Jason@zx2c4.com>
To: Baptiste Jonglez <baptiste@bitsofnetworks.org>
Cc: WireGuard mailing list <wireguard@lists.zx2c4.com>
Subject: Re: Performance of Wireguard on Infiniband 40G
Date: Sun, 14 May 2017 01:45:22 +0200 [thread overview]
Message-ID: <CAHmME9rowGrGgBoWaVzh0OjFrFKj95Ub__fT+SGYLD4SKYRpiw@mail.gmail.com> (raw)
In-Reply-To: <20170513073721.GD22218@tuxmachine.polynome.dn42>
Hey again,
On Sat, May 13, 2017 at 9:37 AM, Baptiste Jonglez
<baptiste@bitsofnetworks.org> wrote:
> - Debian jessie
> - Linux 3.16.43-2
One small and unfortunate thought just occurred to me: the backporting
to really old kernels I'm pretty sure is way less efficient than newer
kernels on the RX, due to some missing core fast-path APIs in the old
kernels. In particular, I had to wrap the UDP layer with some nasty
hacks to get packets out, whereas newer kernels have an elegant API
for that which integrates in the right place. Just a thought... I
haven't actually done concrete measurements though.
Jason
prev parent reply other threads:[~2017-05-13 23:34 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-13 7:37 Baptiste Jonglez
2017-05-13 22:52 ` Jason A. Donenfeld
2017-05-14 9:55 ` Baptiste Jonglez
2017-05-14 10:48 ` Greg KH
2017-05-14 10:49 ` Jason A. Donenfeld
2017-05-13 23:45 ` Jason A. Donenfeld [this message]
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