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From: Nick Piggin <nickpiggin@yahoo.com.au>
To: David Miller <davem@davemloft.net>
Subject: Re: 2.6.24-rc2: Network commit causes SLUB performance regression with tbench
Date: Wed, 14 Nov 2007 09:55:03 +1100
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On Wednesday 14 November 2007 09:27, Nick Piggin wrote:

> > 2) Try removing NETIF_F_SG in drivers/net/loopback.c's dev->feastures
> >    setting.
>
> Will try that now.

Doesn't help (with vanilla kernel -- Herbert's patch applied).

data_len histogram drops to 0 and goes to len (I guess that's not
surprising).

Performance is pretty similar (ie. not good).

I'll look at allocator patterns next.