[rescue] Re: intel vs. sun- for real

Kurt Mosiejczuk kurt at csh.rit.edu
Tue Jul 30 12:54:46 CDT 2002


On Sun, 21 Jul 2002 s at avoidant.org wrote:

> We're currently doing tar over ssh, then gzip -9.

Oog.  SSH is really going to punish the sparcs...  they don't
have the hardware bit rotate the x86 have (well, had until P4).
That is probably contributing to your load problems.  A crypto
accelerator would help, except I don't know of any version of
SSH that will use them directly (except perhaps under OpenBSD,
and then probably only on x86)

Also consider bringing gzip down to like -6.  Giving it -9
says to it you don't really care about CPU usage, just get it
as small as possible.  A lesser setting may not hurt you much
compression wise and may gain you some good speed.

> We're also working on a new, custom backup solution. We tried Amanda for
> a while, and gave it up. My cubemate and I are working on it.

The only thing I find REALLY hurts AMANDA is the lack of tape spanning.
Once they solve that, I think it'll be a great choice for many places.

--Kurt



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