Richard Fish wrote: > Alexander Veit wrote: > > > geometry = 4867/255/63, sectors = 78198750, start = 0 > > geometry = 65535/16/63, sectors = 40037760000, start = 0 > > > > > > Well, the obvious thing for me is the difference in the drive > geometries > between the two systems...the 2.6 kernel is seeing the entire drive > while the 2.4 kernel is only seeing ~39G worth. I remember seeing a > message somewhere that LBA48 addressing was pretty slow on some > systems. I'm googling now, if I find anything I'll post a followup.
Another difference is the kernel version Gentoo 2.6.11, Knoppix 2.4.23. I've just tried Knoppix 3.8.1 which comes with Linux kernel 2.6.11, and surprise, when tweaking the hd params with the same values (except geometry) as before /dev/hda: multcount = 16 (on) IO_support = 1 (32-bit) unmaskirq = 1 (on) using_dma = 1 (on) keepsettings = 0 (off) readonly = 0 (off) readahead = 8 (on) geometry = 65535/16/63, sectors = 78198750, start = 0 the buffered read performance is 17,44 MB/sec as with Gentoo. What does this mean? Alex -- gentoo-user@gentoo.org mailing list
