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Subject: Re: [ANNOUNCE] WireGuard Snapshot `0.0.20180620` Available
From: Lonnie Abelbeck <lists@lonnie.abelbeck.com>
In-Reply-To: <CAHmME9r+uOOT_50zG3XQwB79reOhFBysE04=3=btubVQMdbuyQ@mail.gmail.com>
Date: Wed, 20 Jun 2018 17:37:20 -0500
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> On Jun 20, 2018, at 4:24 PM, Jason A. Donenfeld <Jason@zx2c4.com> =
wrote:
>=20
> Hey Lonnie,
>=20
> Thanks for letting me know. Can you tell me if this patch --
> https://=D7=90.cc/GJpT3gVY -- brings the performance back up? And if =
that
> works, can you then try each of those three fragments separate to see
> which one has an actual effect (or perhaps all do).
>=20
> Jason

Hunk #1 only does the trick, though performance is ever so slightly =
slower than before overall.

Is this issue because our project uses CONFIG_PREEMPT=3Dy ?

Data below.

Lonnie

-- 0.0.20180531 reference --
[SUM]   0.00-30.00  sec  2.65 GBytes   758 Mbits/sec  571             =
sender
[SUM]   0.00-30.02  sec  2.64 GBytes   756 Mbits/sec                  =
receiver

-- full patch --  hunk #1, #2 and #3
[SUM]   0.00-30.00  sec  2.53 GBytes   724 Mbits/sec  921             =
sender
[SUM]   0.00-30.01  sec  2.52 GBytes   722 Mbits/sec                  =
receiver

-- hunk #1 only --
[SUM]   0.00-30.00  sec  2.57 GBytes   735 Mbits/sec  807             =
sender
[SUM]   0.00-30.01  sec  2.56 GBytes   733 Mbits/sec                  =
receiver

-- hunk #2 only --
[SUM]   0.00-30.00  sec  1.52 GBytes   434 Mbits/sec   91             =
sender
[SUM]   0.00-30.02  sec  1.51 GBytes   433 Mbits/sec                  =
receiver

-- hunk #3 only --
[SUM]   0.00-30.00  sec  1.51 GBytes   432 Mbits/sec  330             =
sender
[SUM]   0.00-30.03  sec  1.50 GBytes   430 Mbits/sec                  =
receiver