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Date: Thu, 20 Nov 2008 01:06:06 -0800 (PST) From: David Miller <davem@...emloft.net> To: nickpiggin@...oo.com.au Cc: torvalds@...ux-foundation.org, mingo@...e.hu, dada1@...mosbay.com, rjw@...k.pl, linux-kernel@...r.kernel.org, kernel-testers@...r.kernel.org, cl@...ux-foundation.org, efault@....de, a.p.zijlstra@...llo.nl, shemminger@...tta.com Subject: Re: [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28 From: Nick Piggin <nickpiggin@...oo.com.au> Date: Tue, 18 Nov 2008 20:44:10 +1100 > On Tuesday 18 November 2008 07:58, David Miller wrote: > > From: Linus Torvalds <torvalds@...ux-foundation.org> > > Date: Mon, 17 Nov 2008 12:30:00 -0800 (PST) > > > > > On Mon, 17 Nov 2008, David Miller wrote: > > > > It's on my workstation which is a much simpler 2 processor > > > > UltraSPARC-IIIi (1.5Ghz) system. > > > > > > Ok. It could easily be something like a cache footprint issue. And while > > > I don't know my sparc cpu's very well, I think the Ultrasparc-IIIi is > > > super- scalar but does no out-of-order and speculation, no? > > > > I does only very simple speculation, but you're description is accurate. > > Surely it would do branch prediction, but maybe not indirect branch? Right. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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