From: Christoph Fritz <chf.fritz@googlemail.com>
To: Daniel J Blueman <daniel@quora.org>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: lockup when C1E and high-resolution timers enabled
Date: Mon, 15 Jun 2015 01:38:38 +0200 [thread overview]
Message-ID: <1434325118.1999.5.camel@googlemail.com> (raw)
In-Reply-To: <CAMVG2st3co7ZkfGDk-BJU8d38oDM6ZUba1Xhuq8Amb4XJ5AUiQ@mail.gmail.com>
On Sun, 2015-06-14 at 23:24 +0800, Daniel J Blueman wrote:
> val=0x$(setpci -s 00:18.3 0xd4.l) # read D18F3xD4
> val=$((val &~(1 << 13))) # clear bit13 (MTC1eEn)
> setpci -d 1022:1603 0xd4.l=$(printf %x $val) # write back
This slows down the whole system dramatically:
- before: MTC1eEn set: Booting takes 11 secs
- after : MTC1eEn cleared: Booting takes 53 secs
next prev parent reply other threads:[~2015-06-14 23:38 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-14 3:13 lockup when C1E and high-resolution timers enabled Daniel J Blueman
2015-06-14 4:39 ` Christoph Fritz
2015-06-14 7:54 ` Daniel J Blueman
2015-06-14 14:49 ` Christoph Fritz
2015-06-14 15:24 ` Daniel J Blueman
2015-06-14 23:38 ` Christoph Fritz [this message]
2015-06-14 16:47 ` Borislav Petkov
2015-06-14 23:05 ` Christoph Fritz
2015-06-15 7:54 ` Borislav Petkov
2015-06-15 8:01 ` Christoph Fritz
2015-06-15 8:10 ` Borislav Petkov
2015-07-13 7:32 ` Christoph Fritz
-- strict thread matches above, loose matches on Subject: below --
2015-06-13 19:53 Christoph Fritz
2015-06-13 20:19 ` Heinz Diehl
2015-06-13 20:58 ` Christoph Fritz
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