On Sunday 19 August 2001 02:32, you wrote: > >Just thought you might be interested: > > > >Soltek SL-75KAV motherboard, 1GHz Athon, 128MB RAM > >Chipset: North Bridge VIA VT8363A (KT-133A) and South Bridge VIA > > VT82C686B > > > >I haven't as yet tried burning CD-R but CDRW using gtoaster > >works fine. > > Well heck, that sounds pretty good. But you say you've > not tried buring a CD in your CDRW? gtoaster is used for > what, if not burning CDs -- sorry, I'm still a newbie. > > >udma2: > > [root@localhost skinky]# hdparm -tT /dev/hda: > > Timing buffer-cache reads: 128 MB in 0.79 seconds =162.03 MB/sec > > Timing buffered disk reads: 64 MB in 3.09 seconds = 20.71 MB/sec > > Hmmmm, in my WinME world, Norton Utilities System Information > does a drive test and I get speeds like the these on "logical > benchmark", by which it means using cached (buffered) reads > and writes, even with DMA *turned off*. > > There's another benchmark called "physical" which measures > physical reads. When I turn on DMA, performance jumps a > lot where my drives are ranked between mid-range and high > end vs. between mid-range and low end. Seems this other > benchmark is more telling as to whether DMA is in the > picture. > > civileme said specifically that hdparm would NOT show that > dma had been switched off on bootup by the kernel, once > it detected that VIA chipset. Seems possible to me that > you're not getting udma performance. > > I'd be interested if you manage to burn a CD though, and > if you do so at drive-rated speed. > > Kirby Hi Kirby Sorry I didn't make that very clear, I'll rephrase: I have burned a few data files onto CD-RW with gtoaster but I haven't tried burning to CD-R as yet. And since it was my first go at burning in linux, I only burned at 4x. I'll have a go at burning CD-R today, one at 4x (as I had to in Windoze) and one at 10x (HP 9310i max write speed). After reading Tom's and Civileme's messages re VIA I'm totally confused. I don't know how to change my setup - the udma or PIO thing - or whether its even possible. I suppose I'll just have to leave things as they are for now. What's worse, I'm upgrading my system in a week's time and now I don't know what to buy! Anyway, will post the results of my attempt at burning CD-R later. Cheers skinky
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