Messages in this thread |  | | From | "LA Walsh" <> | Subject | RE: IDE0 /dev/hda performance hit in 2217 on my HW - more info - maybe extended partitions | Date | Tue, 14 Nov 2000 16:16:08 -0800 |
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It seems to be the output of vmstat that isn't matching things. First it says it's getting near 10M/s, but if you divide 128M/27 seconds, it's more like 4.7. So where is the time being wasted? It's not in cpu either.
Now lets look at hda7 where vmstat reported 2-3meg/sec. Again, the math says it's a rate near 5. So it still doesn't make sense.
> -----Original Message----- > From: linux-kernel-owner@vger.kernel.org > [mailto:linux-kernel-owner@vger.kernel.org]On Behalf Of Andries Brouwer > Sent: Monday, November 13, 2000 4:59 PM > To: LA Walsh > Cc: lkml > Subject: Re: IDE0 /dev/hda performance hit in 2217 on my HW - more info > - maybe extended partitions > > > On Mon, Nov 13, 2000 at 03:47:27PM -0800, LA Walsh wrote: > > > Some further information in response to a private email, I did > hdparm -ti > > under both > > 2216 and 2217 -- they are identical -- this may be something weird > > w/extended partitions... > > What nonsense. There is nothing special with extended partitions. > Partitions influence the logical view on the disk, but not I/O. > > (But the outer rim of a disk is faster than the inner side.) > > Moreover, you report elapsed times > 0:27, 0:22, 0:24, 0:28, 0:21, 0:24, 0:27 > where is this performance hit? > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > Please read the FAQ at http://www.tux.org/lkml/ >
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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