Re: new loop aes and speedup

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Newsmail wrote:
> is there any sence that maybe with this new loop-aes version Jari announced
> not so long time ago , we could notice speedups? or is this some illusion
> of my part (kernel 2.4)?

2.4 kernels have faster loop than 2.2 kernels, so if you upgraded from 2.2
kernel to 2.4 kernel, you may see better performance.

> 2nd question: if we compile loop-aes with -O6 by editing the linux
> makefile, could we notice speedups, or its not recommended at all to use
> -O6? I'M using gcc-3.2.1

Please don't change the optimization level in kernel Makefile. Kernel code
needs to cope with interrupts and other processes modifying data in a way
not detectable by the compiler. Too high optimization level may optimize
away code that is required for correct operation.

Regards,
Jari Ruusu <jari.ruusu@pp.inet.fi>

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Archive:       http://mail.nl.linux.org/linux-crypto/


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