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From: David Miller <davem@davemloft.net>
To: herbert@gondor.apana.org.au
Cc: satoshi.oshima.fk@hitachi.com, johnpol@2ka.mipt.ru,
	netdev@vger.kernel.org, haoki@redhat.com,
	yoshfuji@linux-ipv6.org, yumiko.sugita.yf@hitachi.com
Subject: Re: [RFC/PATCH 0/3] UDP memory usage accounting
Date: Fri, 28 Sep 2007 21:51:59 -0700 (PDT)	[thread overview]
Message-ID: <20070928.215159.58440039.davem@davemloft.net> (raw)
In-Reply-To: <20070928.214737.120464821.davem@davemloft.net>

From: David Miller <davem@davemloft.net>
Date: Fri, 28 Sep 2007 21:47:37 -0700 (PDT)

> Per-user limits are not necessarily the answer.

Seeing myself say this reminds me that it seems to have been missed in
all of this that we do have a limit per user already.

There is a per-socket send buffer limit, and there is a per-user open
file descriptor limit.  Multiply the two to determine how much system
memory the user can consume using sockets.

This is why I view a lot ofthis work as quite pointless.  We already
have limits, but nobody wants to use them for performance reasons :-)

  reply	other threads:[~2007-09-29  4:52 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-09-21 12:18 [RFC/PATCH 0/3] UDP memory usage accounting Satoshi OSHIMA
2007-09-21 12:58 ` Evgeniy Polyakov
2007-09-27 18:51   ` Hideo AOKI
2007-09-28 13:26   ` Satoshi OSHIMA
2007-09-29  3:21     ` Herbert Xu
2007-09-29  4:47       ` David Miller
2007-09-29  4:51         ` David Miller [this message]
2007-09-29  5:20           ` Herbert Xu
2007-10-01 13:56             ` Satoshi OSHIMA
2007-09-29  5:55         ` Herbert Xu
2007-10-01 13:57           ` Satoshi OSHIMA

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