Messages in this thread | | | Subject | Re: What to do with all of the USB UHCI drivers in the kernel? | From | Peter Osterlund <> | Date | 23 May 2002 20:16:53 +0200 |
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Greg KH <greg@kroah.com> writes:
> Let me (and the linux-usb-devel list) know about any thoughts you have > pertaining to liking one of the drivers over the other one. Speed > tests, size tests, code pretty tests, comment spelling tests, > documentation tests, you name it, I want to know about it. If you > don't want your comments to be public, send them to me directly and I > will not let anyone else know what you said, but will use the info to > try to pick which one should stay.
I did a simple test reading a bunch of files from a Freecom CDRW drive.
usb-uhci-hcd 17840 0 (unused)
pengo:/cdrw$ time wc petero/mp3/madonna/* ... 188462 1091976 50386286 total
real 1m24.930s user 0m10.440s sys 0m1.360s
uhci-hcd 24608 0 (unused)
pengo:/cdrw$ time wc petero/mp3/madonna/* ... 188462 1091976 50386286 total
real 1m33.095s user 0m12.670s sys 0m11.870s
So the usb-uhci-hcd driver is 27% smaller, gives a 10% higher transfer rate and produces less system load during the data transfers. (About 70% idle time versus 50% idle time on my 233MHz MMX system.)
-- Peter Osterlund - petero2@telia.com http://w1.894.telia.com/~u89404340 - 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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