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

From: Nick Piggin
Date: Wed Nov 14 2007 - 06:03:21 EST


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.
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