netdev - Re: [PATCH net-next] dev: add support of flag IFF

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <524EAF64.8000801@6wind.com>
Date:	Fri, 04 Oct 2013 14:07:00 +0200
From:	Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:	David Miller <davem@...emloft.net>, stephen@...workplumber.org
CC:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] dev: add support of flag IFF_NOPROC

Le 03/10/2013 21:09, David Miller a écrit :
> From: Stephen Hemminger <stephen@...workplumber.org>
> Date: Thu, 3 Oct 2013 10:46:27 -0700
>
>> What about speeding up proc or sysfs? Or providing a bulk create/destroy.
>
> +1 +1 +1
>
> This will benefit more people than the just the envisioned users for
> this IFF_NOPROC thing.
>
> I really don't want to take the IFF_NOPROC approach.
>
Of course optimizing /proc and /sysfs is a good option, but any optimizations
will never be as fast as disabling them for some well known netdevices.

Note also that the memory consumption is significantly less with this flag:
for 20000 dummy interfaces:
without the flag: 463,84Mo
with the flag: 297,45Mo
the gain is 166Mo (35%)
--
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