kirill wrote: > Hi! > > Recently I've upgraded internal cf on my c3000. So now I have a better idea > of what > cf storage performance you can get with c3000 hardwire. > > Benchmark results (2.6.19 kernel, dd if=/dev/hda of=/dev/null):
> 1) unmodified kernel: ~ 2MB/sec > 2) optimized timings, 250ns io cycle: ~ 3MB/sec Well, I tried your patch from the list on 2.6.26-RP. I see 2.33 MB/sec -> 2.63MB/sec improvement on 6 years old 40x card. > 3) optimized timings, DMA patch, 250ns io cycle: ~ 4MB/sec > 4) optimized timings, DMA patch, 120ns io cycle: ~ 5.5MB/sec > 5) optimized timings, DMA patch, 120ns io cycle, different cf card: ~ > 6.3MB/sec > 120ns io cycle = CFA advanced I/O timing mode supported by the card. > DMA patch = ide-cs patch, which adds support for memory-to-memory style DMA to > transfer data from IDE data register to memory buffer. Do you have a patch for these things? Well, I guess that also SD runs slower than it could. PXA270 datasheet[1] says, that it can run 9.75MB/sec on SD. I see 1.8MB/s. [1] http://www.penguin.cz/~utx/zaurus/datasheets/CPU/Intel%20PXA27x%20Processor%20Family%20Developer's%20Manual.pdf page 15-1 -- ________________________________________________________________________ Stanislav Brabec http://www.penguin.cz/~utx/zaurus _______________________________________________ Zaurus-devel mailing list Zaurus-devel@lists.linuxtogo.org http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/zaurus-devel
