I get between 27MB/s and 30MB/s Yuval Scharf
On Tue, 19 Aug 2003 [EMAIL PROTECTED] wrote: > > Hello, > > > > I don't understand your answer Nicolas. > > Because My bus is 33MHz I get 27MB/s. I understand that. > > What I'm asking is if the UDMA(100) means that the HD is > > capable of 100MB/s and the bus holds it back. Does it mean > > that with anewer motherboard my HD will work much faster? > > > > Yuval Scharf > > That's not what it means. Read the Kernel message carefully: > > > > > ide: Assuming 33MHz system bus speed for PIO modes; override with > > That only applies to PIO modes, not DMA modes.Your hard drive had is > operating in DMA mode: > > > > ide0: BM-DMA at 0xff00-0xff07, BIOS settings: hda:DMA, hdb:pio > > If you turn on all the "safe" optimizations for your drive as such: > > hdparm -c1 -d1 -m16 -u1 -A1 -a64 > > and then test it, whatdo you get?That's about the most you'll squeeze > out of it.And there's no way you are ever going to see 100MB/s out of > a single IDE drive, it's just a sales tool.If you get even 50MB/sec > off of UDMA100, you're doing quite well... > > HTH, > > -- > Jason Santos > > > -- > [EMAIL PROTECTED] mailing list > > > -- [EMAIL PROTECTED] mailing list
