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Date: Fri, 10 Sep 2010 08:42:00 +0100 From: Nix <nix@...eri.org.uk> To: Artur Skawina <art.08.09@...il.com> Cc: Thomas Gleixner <tglx@...utronix.de>, Venkatesh Pallipadi <venki@...gle.com>, Damien Wyart <damien.wyart@...e.fr>, John Drescher <drescherjm@...il.com>, linux-kernel@...r.kernel.org Subject: Re: [BISECTED] 2.6.35.*: horrible (exponential? >linear) slowdown to unusability (HPET) On 10 Sep 2010, Artur Skawina spake thusly: > I'm seeing this too, except here it happens every couple of days of uptime, > lasts for a few minutes, and then goes away. Which made bisecting a bit > impractical... Thank you for doing it. I just happened to be the lucky sod for whom it was consistently going wrong. :) > HW is similar; x64 and X58/82801JI/ICH10, tsc clocksrc. > Did that printk trigger? No. (hm, odd. spindle:~# cat /sys/devices/system/clocksource/clocksource0/current_clocksource tsc spindle:~# grep -i tsc /proc/timer_list spindle:~# grep -i hpet /proc/timer_list Clock Event Device: hpet set_next_event: hpet_legacy_next_event set_mode: hpet_legacy_set_mode I suspect current_clocksource doesn't do what we think it does, or the clocksource and 'clock event device' are not the same.) -- 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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