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Re: 2.6.24-rc2: Network commit causes SLUB performance regression with tbench

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From: Nick Piggin <nickpiggin@...>
To: David Miller <davem@...>
Cc: <clameter@...>, <netdev@...>, <herbert@...>, <linux-kernel@...>
Subject: Re: 2.6.24-rc2: Network commit causes SLUB performance regression with tbench
Date: Tuesday, November 13, 2007 - 6:55 pm

On Wednesday 14 November 2007 09:27, Nick Piggin wrote:


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.
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Messages in current thread:
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., Nick Piggin, (Tue Nov 13, 7:41 am)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., David Miller, (Tue Nov 13, 9:58 pm)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., Nick Piggin, (Tue Nov 13, 1:36 pm)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., David Miller, (Wed Nov 14, 2:12 am)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., Nick Piggin, (Tue Nov 13, 2:14 pm)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., David Miller, (Wed Nov 14, 2:37 am)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., Nick Piggin, (Tue Nov 13, 6:27 pm)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., David Miller, (Wed Nov 14, 7:10 am)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., Herbert Xu, (Wed Nov 14, 7:48 am)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., David Miller, (Wed Nov 14, 7:46 pm)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., Christoph Lameter, (Wed Nov 14, 9:03 pm)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., Herbert Xu, (Wed Nov 14, 9:11 pm)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., Nick Piggin, (Wed Nov 14, 9:47 pm)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., Nick Piggin, (Wed Nov 14, 8:21 pm)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., David Miller, (Wed Nov 14, 8:27 pm)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., Nick Piggin, (Tue Nov 13, 8:02 pm)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., David Miller, (Wed Nov 14, 8:10 am)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., Christoph Lameter, (Wed Nov 14, 2:33 pm)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., Nick Piggin, (Tue Nov 13, 7:39 pm)
Re: 2.6.24-rc2: Network commit causes SLUB performance regre..., Nick Piggin, (Tue Nov 13, 6:55 pm)