From: "Oskar Liljeblad" <oskar@osk.mine.nu>
To: linux-ide@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Subject: clock drift with two Promise Ultra133 TX2 (PDC 20269) cards
Date: Mon, 2 May 2005 21:28:43 +0200 [thread overview]
Message-ID: <20050502192843.GA3367@oskar> (raw)
I'm running 2.6.11.8 on an server with two Promise Ultra133 TX2 (PDC20269)
PCI cards, same hardware revision (judging from stickers on the cards).
I'm using the CONFIG_BLK_DEV_PDC202XX_NEW driver.
Each card has two connected hard drives. Whenever I read from a disk
on one of the cards (e.g. using 'dd if=/dev/hdX of=/dev/null bs=1M'), and
at the same time read from a disk on the other card, there is heavy
software clock drift. It drifts about 2-5 seconds per minute.
This does not happen if I read from two drives connected on the same
card, or if I read from a drive connected to the motherboard IDE
(VIA vt8233a) and a drive on either of the Promise cards.
Oskar Liljeblad (oskar@osk.mine.nu)
next reply other threads:[~2005-05-02 19:28 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-02 19:28 Oskar Liljeblad [this message]
-- strict thread matches above, loose matches on Subject: below --
2005-05-03 14:18 clock drift with two Promise Ultra133 TX2 (PDC 20269) cards Drew Winstel
2005-05-03 14:18 ` Drew Winstel
2005-05-03 14:40 ` Oskar Liljeblad
2005-05-03 15:13 Drew Winstel
2005-05-03 15:13 ` Drew Winstel
2005-05-03 16:02 ` Oskar Liljeblad
2005-05-03 16:07 Drew Winstel
2005-05-03 16:07 ` Drew Winstel
2005-05-03 17:28 ` Oskar Liljeblad
2005-05-04 17:59 ` Bill Davidsen
2005-05-03 18:29 Drew Winstel
2005-05-03 18:29 ` Drew Winstel
2005-05-04 20:10 ` Oskar Liljeblad
2005-05-05 14:45 Drew Winstel
2005-05-05 14:45 ` Drew Winstel
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