[rt-users] Re: Performance issues with rt3 - old topic new again..

[Cees de Groot]

John Schubert  <jschubert at linearcorp.com> said:
>Sounds like a similar experience I had (I was the original author of
>this thread).  Everyone said memory was an issue, but I think it was
>CPU.  I had a 25-30 second wait, but I only had one P2 333 CPU.  Once
>going to 677MHz (or thereabouts) with 512 MB of RAM, wait time went to
>practically zero. 
>
>Just my humble opinion (which seems to be always wrong nowadays).
>
Well, I think it is. The CPU you dropped in is twice as fast, so you would
expect waits to go to 12-15 secs. You experienced an order of magnitude
speed-up (at least), which the CPU upgrade couldn't have given you.
However, you doubled RAM as well (in violation of the ceteris paribus
rule ;-)), so that must have been the case.

In general under Linux, if you have 100$ to spend and you have to
choose CPU or RAM, spend it on RAM. For example, I just ordered a new
mobo+CPU+memory setup, and stepped down with the CPU speed a bit to make
sure I could afford 1G of PC400 RAM.

-- 
Cees de Groot               http://www.tric.nl     <cg at tric.nl>
tric, the new way           helpdesk/ticketing software, VoIP/CTI, 
                            web applications, custom development