Performance enhancements

[Marvin P. Dickens]

> THis may all be well & true, however it still doesnt' address the fact
> that disabling swap is not a performance enhancement, but rather a
> performance degradation.
> 
> -- 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Lonni J Friedman				netllama at linux-sxs.or

Not so.  Here is a quote directly from the "Swap-Mini-Howto":

"It is now feasible (in the Linux 2.5.40 timeframe) to eliminate 
swap devices (partitions) completely and not be penalized in 
performance."

Performance gain proof in networking swap vs no swap: 

Results of netperf TCP/IP Stream performance tests on Linux/MVME-162 
and Linux/MVME-167 are found here:

http://www.esrf.fr/computing/cs/sysadmin/rtk/emlinux/doc/netperf/vmetcpstream.htm


Performance gain proof as related to I/O. Go to the  linux-audio-dev mailing list
and query for "swap" and you'll get tons of info supporting my position. Go to the 
kernal (Developer list)  mailing list and you'll find tons of info supporting my 
position.

Lonnie, This fact is nothing new... It's been a fact since the invention of the 
hard drive. How can you make the claim that a swap partition on a hard drive is 
faster than 10ns RAM? Swap pages vs RAM is Snail vs Jackrabbit. For the record, 
I'll say it one more time: " I know alot of people do not want to run a system 
without a swap space." Lonnie, you are one of them which is fine with me. But, 
don't mix fact with fiction by claiming that using a swap space is a performance
enhancement. It' an insurance policy for underprovisioned machines.


Best

Peck


Best

Peck