Messages in this thread | | | Date | Wed, 2 Apr 2003 17:17:55 +1200 | From | "leon j. breedt" <> | Subject | ASUS P4PE spurious hdparm -tT results...UPDATE |
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hi,
i'm still getting the same weird negative test results for the WDC WD800JB-00CRA1 drive on 2.4.21-pre6:
/dev/hda: Timing buffer-cache reads: -3008 MB in 0.00 seconds = -inf kB/sec Timing buffered disk reads: -1504 MB in 0.00 seconds = -inf kB/sec Hmm.. suspicious results: probably not enough free memory for a proper test.
however...i noticed that when i booted up with kernel 2.4.20-xfs_pre6 (the Gentoo 1.4rc3 LiveCD kernel), i didn't get strange test results.
the difference between the two seemed to be that the 2.4.20-xfs_pre6 kernel initialized the drive in mdma2 mode, and didn't support udma5 for the IDE layer in that version of the kernel. so maybe this is a bug that's crept in since 2.4.21 and better ICH4 support days?
the IDE layer in that version of the kernel is based on a version from www.linuxdiskcert.org, i'm not sure how different that is from the version Alan & c have been working on.
any ideas what may cause this, for just the WDC drive and not the IBM? both are on the same channel..
thanks, leon. - 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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