<<TECH NOTE: The EXP and SR misses do not currently work on OFBiz due to
a bug introduced a few years ago. All misses are logged as NF (Not
Found).>>
I have to think that this was direct feedback from David Jones. Perhaps
it is resolved now, not sure to be honest.
On 9/4/2014 8:22 AM, Jacques Le Roux wrote:
Le 13/08/2014 20:22, Nick Rosser a écrit :
FWIW -- we went through a lot of performance pains implementing some
high-volume eComm apps. Ended up consulting directly with David Jones
for pointers / advise / strategy etc.
As a result we put together this doc, may be of some help / interest:
http://bigfish.solveda.com/help/guideCachingAndMemory.htm
First section is all about the caching aspects of OFBiz, all the good
DB caching stuff in the framework.
Scroll down to the "memory" section of the doc ... for a discussion
about JVM settings etc.
Interesting, thanks Nick.
I noticed there is a known bug
<<TECH NOTE: The EXP and SR misses do not currently work on OFBiz due
to a bug introduced a few years ago. All misses are logged as NF (Not
Found).>>
Do you have more information about that, is it only on the UI side? Is
it only information missing there, or? Is there a Jira issue open, etc?
Jacques
Nick
On 8/13/2014 12:53 PM, [email protected] wrote:
I agree that looking at just CPU is not a good guide.
IO is usually the issue before cpu. If it was bad code the cpu might
go 100%
before the IO.
But bus, memory etc all play a part.
Did you switch to Postgres? Not sure if Derby is the best for load
testing.
I know with postgres each time a request is used it will use a new
thread
and can make use of multiple CPU.
I am not sure if the JVM uses multiple core, but I imagine it has
some form
of using multiple threads.
Any how I appreciate your sharing you found 20 concurrent users
seems to be
a max.
Not 100% sure, but I know I had to support 250 at my last job, but I
used
many techniques.
For one I had three web servers. My Database server was very high
end with
fiber SAN. I used different app servers for different parts of my
app. I was
using liferay as my portal engine, and I even had a separate server
or some
of our larger clients, while smaller clients used a shared instance.
I guess my point is there are many ways to get an application to
handle the
load.
-----
Joel Fradkin
--
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