Re: [linuxsh-dev] Re: Slow 32 bytes long "mov" delta - HitachiSH4(7750),SolutionEngine(MS7750SE01E)

[Vladimir D. <vdo...@wa...>]

Hi,

I just tested with latest 2.4.17. Approximatly a new kernel runs 3-4 times
faster but
i still got the same problem....

Thanks,
vlad

kaz Kojima wrote:

> Vladimir Doukhanine <vdo...@wa...> wrote:
> >> Vladimir Doukhanine <vdo...@wa...> wrote:
> >>> If I copy data from one place to another after each megabyte (delta
> >>> between src and dst)
> >>> there is some kind of "black hole" 32 bytes long in which processor
> >>> works 15 times
> >>> slower.
> >>
> >> Which version of kernel are you testing?
> >
> > 2.4.5
>
> 2.4.5 kernel has SH-4 cache and other problems. Can you please
> get and test newer kernel?
>
>         kaz
>
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