Performance

[Lee McKenna]

Marc Mutz wrote:

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>On Monday 19 November 2001 18:43, Lee McKenna wrote:
><snip>
>
>>For the record book :) I ran the following tests using gpg 1.0.6,
>>1024bit key, on a PIII/800, 256MB RAM, SCSI/IDE RAID, stock FreeBSD
>>4.3 release, on a file size 3363088179 (3.3GB).  CAST5 is the
>>fastest, 3DES slowest.  All others are relatively close.
>>
><snip>
>
>If you use gnupg from rpm's (or equivalent on FreeBSD), you could try 
>recompiling gpg with --march=pentiumpro. This should speed things up a 
>bit (maybe even twice; by base64 encoder doubled it's speed by using 
>this option). Alternatively, you could use icc, if that runs under 
>FreeBSD. That should give you another 15-20%.
>

I installed the FreeBSD "package", so I am not sure of the compile time 
flags that were used.  I will grab the sources and try a recompile.

When I use gpg on these large files the CPU is pegged at 98%, and disk 
i/o is just under 5MB/s.  I'm pretty much convinved at this point that 
encrypt/decrypt speed is bound by the CPU and the only thing I can do is 
get a faster processor.

What is icc, and how could that help my cause?

Thanks for your help, it is much appreciated.  

--Lee