netdev - Re: TUN device performance regression

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1397475759.12568.0.camel@interceptor.in.smoula.net>
Date:	Mon, 14 Apr 2014 13:42:39 +0200
From:	Martin Filip <nexus+kernel@...ula.net>
To:	netdev@...r.kernel.org
Subject: Re: TUN device performance regression

> Hello,
> 
> I've noticed significant TUN device performance drop between 3.13 and
> 3.14 kernels, problem seems to persist until current git version.
> 
> With good kernel I can achieve full 100mbps through openvpn without any
> problem, with problematic kernel TX performance drops down to ~50kbps.
> 
> According to git bisect it seems that root of all evil is commit
> 53d6471cef17262d3ad1c7ce8982a234244f68ec.
> 
> I can confirm that performance is great again with current kernel when I
> revert this one.
> 
I've forgot to mention kernel bug:
https://bugzilla.kernel.org/show_bug.cgi?id=74051

-- 
Martin Filip
e-mail: nexus@...ula.net
jabberID: nexus@...ula.net
http://www.smoula.net


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html