From: Nix <nix@esperi.org.uk>
To: Artur Skawina <art.08.09@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Venkatesh Pallipadi <venki@google.com>,
Damien Wyart <damien.wyart@free.fr>,
John Drescher <drescherjm@gmail.com>,
linux-kernel@vger.kernel.org
Subject: Re: [BISECTED] 2.6.35.*: horrible (exponential? >linear) slowdown to unusability (HPET)
Date: Fri, 10 Sep 2010 08:42:00 +0100 [thread overview]
Message-ID: <87eid282pj.fsf@spindle.srvr.nix> (raw)
In-Reply-To: <4C8982EF.8030705@gmail.com> (Artur Skawina's message of "Fri, 10 Sep 2010 02:59:27 +0200")
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.)
next prev parent reply other threads:[~2010-09-10 7:42 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-05 0:51 2.6.35.*: horrible (exponential? >linear) slowdown to unusability (ACPI idle?) Nix
2010-09-06 5:32 ` Damien Wyart
2010-09-06 20:27 ` Nix
2010-09-07 5:36 ` Damien Wyart
2010-09-08 21:24 ` Nix
2010-09-08 21:35 ` John Drescher
2010-09-08 22:25 ` Nix
2010-09-09 22:34 ` [BISECTED] 2.6.35.*: horrible (exponential? >linear) slowdown to unusability (HPET) Nix
2010-09-09 23:44 ` John Drescher
2010-09-09 23:57 ` Nix
2010-09-10 0:08 ` John Drescher
2010-09-10 0:14 ` John Drescher
2010-09-10 0:59 ` Artur Skawina
2010-09-10 5:36 ` Damien Wyart
2010-09-10 7:42 ` Nix [this message]
2010-09-10 7:47 ` Damien Wyart
2010-09-10 8:37 ` Thomas Gleixner
2010-09-10 9:41 ` Jiri Slaby
2010-09-10 13:22 ` Artur Skawina
2010-09-10 20:13 ` Nix
2010-09-10 20:12 ` Nix
2010-09-14 10:09 ` Thomas Gleixner
2010-09-14 20:17 ` Nix
2010-09-14 22:18 ` Thomas Gleixner
2010-09-14 22:23 ` Artur Skawina
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