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Date: Mon, 21 Jan 2013 23:57:06 +0100 From: Olivier Doucet <webmaster@...ux.com> To: "Rafael J. Wysocki" <rjw@...k.pl> Cc: Borislav Petkov <bp@...en8.de>, linux-kernel@...r.kernel.org Subject: Re: Performance issue since 3.2.6 Good evening, >> I'll try to track this commit. > > Thanks a lot! I failed to find a working version today with CONFIG_PM=y (tested 3.2.6, 3.2.5, 3.2.0, 3.0.1, 2.6.32.8). I'll try older kernels tomorrow. I'm very sceptical now : how can a bug with such a big impact (25% performance drop) can survive for so many years, with no one seeing it ? Good point is that benchmark can be easily done (it took less than an hour to test a new version). If you have patches to be tested, feel free to ask :) In the meanwhile, do you think I can compile a working 3.7 kernel ? Maybe by activating / deactivating specific options ? Olivier -- 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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