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Vitalis Tiknius <vt@vt.fermentas.lt> writes: > i simultaneously burned (audio mode, without scsi emulation) and ripped cd's > under 2.6.0-test2-mm2. devices are: > > ../ide/host0/bus1/target0/lun0/cd (Teac CD-W552E) > ../ide/host0/bus1/target1/lun0/cd (Teac DV-516E). > > mobo is Intel 875. software is k3b-0.9, cdrtools-2.01_alpha18, grip-3.1.1, and > cdparanoia-3.9.8 with all paranoia options on. > > when burning and ripping are performed separately, their speeds are approx. > 42x and 6.3x. when simultaneously, 12x and 1.6x with no options touched. > > although devices are on the same controller (my first controller is > SATA) and on the same bus, i'd rather expect linear and not almost > square-law throughput regression observed. are the things expected > to go this way, or there is some room for optimizations, etc.? The first thing to do is to use separate cables for those devices, and see if it helps. -- Måns Rullgård mru@users.sf.net - 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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