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Date: Thu, 15 Feb 2018 09:38:50 +0100 From: Peter Zijlstra <peterz@...radead.org> To: Matt Fleming <matt@...eblueprint.co.uk> Cc: Jon Maloy <jon.maloy@...csson.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "mingo@...nel.org" <mingo@...nel.org>, "David Miller (davem@...emloft.net)" <davem@...emloft.net>, Mike Galbraith <umgwanakikbuti@...il.com> Subject: Re: Serious performance degradation in Linux 4.15 On Wed, Feb 14, 2018 at 10:46:20PM +0000, Matt Fleming wrote: > Here's some more numbers. This is with RETPOLINE=y but you'll see it > doesn't make much of a difference. Oh, this is also with powersave > cpufreq governor. Hurmph, I'll go have a look when I can boot tip/master again :/ But didn't you bench those patches before we merged them? I can't remember you reporting this..
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