Re: What is upbound of LVS hash table?

To: Horms <horms@xxxxxxxxxxxx>
Subject: Re: What is upbound of LVS hash table?
Cc: LVS <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
From: Wang Haiguang <wanghaig@xxxxxxxxxxxxxxx>
Date: Tue, 15 Aug 2000 11:28:31 +0800 (SST)
There is also a timeout value for each connection,
the default value seems 120 seconds. If both the
client and server have already sent FIN to each 
other. Is the entry for this connection in the 
hash table will be deleted immediately or waiting
for the time out and then drop it?

Wang Haiguang

On Mon, 14 Aug 2000, Horms wrote:

> On Tue, Aug 15, 2000 at 09:33:38AM +0800, Wang Haiguang wrote:
> > 
> > I see from LVS-How-To that the maximum number of
> > connections of LVS is 2^12 by default. I know it
> > can be modified when make the kernel. I what to
> > know what is the maximum value I can specified
> > when complie the kernel.
> This number is _not_ the maximum number of connections, it is the number of
> hash bucket entries. Buckets may contain multiple connections, but this is
> less efficient as the hash bucket is a linked list.
> The real limit is the ammount of memory you have.  Each _empty_ hash bucket
> takes 8 bytes (under ia32).  And by my calculations each connection takes
> 124 bytes (under ia32) for an ip_masq structure.
> -- 
> Horms

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