Messages in this thread | | | Subject | Re: [PATCH] 2.6 ide-cd DMA ripping | From | Sean Neakums <> | Date | Sun, 07 Mar 2004 12:04:04 +0000 |
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Jens Axboe <axboe@suse.de> writes:
> On Sat, Mar 06 2004, Sean Neakums wrote: >> Jens Axboe <axboe@suse.de> writes: >> >> > Hi, >> > >> > 2.6 still uses PIO for CDROMREADAUDIO cdda ripping, which is less than >> > optimal of course... This patch uses the block layer infrastructure to >> > enable zero copy DMA ripping through CDROMREADAUDIO. >> > >> > I'd appreciate people giving this a test spin. Patch is against >> > 2.6.4-rc1 (well current BK, actually). >> >> Applied successfully to 2.6.4-rc1-mm2, and it works great. For some >> reason, on two different machines, ripping with cdparanoia used to >> somehow crowd out the serial port, but now everything just works. > > cd ripping was highly cpu intensive when it ran in pio, so it's very > likely that this screwed up your serial port communication. It doesn't > matter with the patch, but had you used hdparm -u1 on your cd device > on an unpatched kernel, you would have had better luck.
I had a look, just for pig iron, and hdparm -u on one of the machines reports that it is already enabled. That machine is SMP with two 1.13GHz PIIIs. I can't check the other machine as the drive in question is no longer functional. - 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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