netdev - Re: [net-next PATCH V2 1/9] net: frag evictor, avoid killing warm frag queues

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Message-ID: <20121130161328.1d589eb9@nehalam.linuxnetplumber.net>
Date:	Fri, 30 Nov 2012 16:13:28 -0800
From:	Stephen Hemminger <shemminger@...tta.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Jesper Dangaard Brouer <brouer@...hat.com>,
	David Miller <davem@...emloft.net>, fw@...len.de,
	netdev@...r.kernel.org, pablo@...filter.org, tgraf@...g.ch,
	amwang@...hat.com, kaber@...sh.net, paulmck@...ux.vnet.ibm.com,
	herbert@...dor.hengli.com.au
Subject: Re: [net-next PATCH V2 1/9] net: frag evictor, avoid killing warm
 frag queues

On Fri, 30 Nov 2012 16:03:29 -0800
Eric Dumazet <eric.dumazet@...il.com> wrote:

> On Fri, 2012-11-30 at 15:47 -0800, Stephen Hemminger wrote:
> > My $.02 is that this would be a good place to introduce lock-free auto
> > resizing hash lists that are in the userspace RCU library.
> > 
> > It would be a non-trivial effort to put this in the kernel, but
> > it would let the table grow transparently.
> 
> Yes, but no ;)
> 
> The current hash is 64 slots, its not like anybody wants it to be one
> million slots.
> 
> 
> 

userspace rcu lfhash has min/max values.
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