netdev - Re: [RFC/PATCH 0/3] UDP memory usage accounting

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Message-Id: <E1IbSt7-000091-00@gondolin.me.apana.org.au>
Date:	Sat, 29 Sep 2007 11:21:05 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	satoshi.oshima.fk@...achi.com (Satoshi OSHIMA)
Cc:	johnpol@....mipt.ru, netdev@...r.kernel.org, haoki@...hat.com,
	yoshfuji@...ux-ipv6.org, yumiko.sugita.yf@...achi.com
Subject: Re: [RFC/PATCH 0/3] UDP memory usage accounting

Satoshi OSHIMA <satoshi.oshima.fk@...achi.com> wrote:
>
> In such case, from 300 to 500MB memory consumption will
> be fatal. Users can easily open 1000 sockets per process
> under default ulimit. If such sockets hold messages but
> user processes don't receive it. Almost all slab will
> be occupied by sk_buff.

Well the solution to that is to have a per-user limit rather
than a system-wide limit.  Otherwise any user can stop system
daemons from using UDP.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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