These are great tips! Can I have your permission to post
these on my blog, along with your name, to give you credit?
-Brandon
From: Axapta-Knowledge-Village@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Malcolm Burtt
Sent: Thursday, December 15, 2005 6:29 AM
To: Axapta-Knowledge-Village@yahoogroups.com
Subject: RE: [Axapta-Knowledge-Village] Load balancing the AOS
Hi Brandon
Well, I guess you'd look at the
following...
1. Is my AOS processor bound and not able to take
additional processors?
2. Is my AOS memory bound and not able to take additional
memory?
3. Is my AOS network bound and not able to take another
network card?
4. Is my AOS disk bound (unlikely on an AOS) and disk
performance not able to be improved?
If the answer to any of the above is "yes" and your AOS
machine is not providing ant other service that could be relocated to another
server then you need to ask.
Is it more cost effective to add a new AOS (and cluster the
two) or replace my existing AOS with a better specified machine that will not
suffer the same resource deficiency? Note that, if your server is not
memory bound but your Ax32Serv process has hit its 2GB memory limit then you are
effectively memory bound. If your server has more than 4Gb RAM (i.e. enough for
2 x 2Gb plus sufficient for the operating system to continue to function) and
the processor capacity to handle the extra load then you could consider adding
an extra AOS instance on the same machine and clustering the two
instances.
You might also consider that adding a newer AOS might
result in a slightly imbalanced cluster. AFAIK The AOS load balancing picks the
AOS with the least number of users on it. So, if you have two machines and
one is newer (and therefore likely to be higher specified) its possible that
users one the newer AOS will receive a better user experience than those on the
older machine. Its not a particularly big problem but might complicate things
for you as your needs expand again and the performance starts to dip for some
users but not others (i.e. "why the hell is user A complaining when user B is
not and why the hell did user B complain yesterday when user A did
not").
Good luck
Malcolm Burtt
Touchstone
Our Trusted Solutions - Your Optimised
Business
From: Axapta-Knowledge-Village@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Brandon George
Sent: 14 December 2005 18:31
To: Axapta-Knowledge-Village@yahoogroups.com
Subject: [Axapta-Knowledge-Village] Load balancing the AOS
Hello
All,
In light of my current progress to improve performance of Axapta, I
am working through some idea's. I was wondering, what do you base load balancing
for the AOS on? To explain further, what amount of users, or usage, etc. does
one look at to say "You know what we need... we need to add another AOS and do
load balancing!"
I am
trying to find this out, but can't find much documentation on this. I am also
really unsure of how to Google this topic, because it does not pull up much
help.
Anyway, any advice on this topic would be great. Has anyone ever went
from a single AOS to two AOS's load balanced?
thanks,
Brandon
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