Re: [PATCH] [DISCUSS] Optimizing linux applications with the help of the kernel.

[Jesper Juhl]

On 10/12/06, Amit Choudhary <amit2030@xxxxxxxxx> wrote:
> Hi All,
>
> I just had an idea for improving the performance of linux applications with some help from the
> kernel. Let's say that I have to make a copy of a file. So, I read the input file into a buffer
> and then write the buffer to the output file.
>
> In both these cases the same data is coming from kernel_to_user and then from user_to_kernel. If
> this can be short-circuited, that is, from kernel_to_kernel then the performance can be increased
> a lot.

See the linux specific splice() syscall - "man 2 splice".

--
Jesper Juhl <jesper.juhl@xxxxxxxxx>
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