netdev - Re: [PATCH v2] IPVS: logging sizeof(struct ip_vs

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Message-ID: <4A6E8EED.8050600@gmail.com>
Date:	Tue, 28 Jul 2009 07:38:53 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Simon Horman <horms@...ge.net.au>
CC:	David Miller <davem@...emloft.net>, heder@...gle.com,
	netdev@...r.kernel.org, lvs-users@...uxvirtualserver.org,
	malcolm@...dbalancer.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] IPVS: logging sizeof(struct ip_vs_conn) on startup

Simon Horman a écrit :
> 
> Surprisingly its a very common question amongst users,
> because they want to know how much memory they need.
> It is of course all a bit silly, because the amount of
> memory used by the connection table is usually very small,
> but people still ask.
> 

If SLUB is used 

$ cat /sys/kernel/slab/ip_vs_conn/object_size

If SLAB is used, take fourth column of :

$ grep ip_vs_conn /proc/slabinfo

BTW these take into account L1 cache size alignment
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