Messages in this thread | | | From | "Oskar Liljeblad" <> | Date | Mon, 2 May 2005 21:28:43 +0200 | Subject | clock drift with two Promise Ultra133 TX2 (PDC 20269) cards |
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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) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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