Hello,
I have a Linux RHE box + CFML-7.02 in a Dual Processor
Dual Core hardware.
I configured this server to handle up to 30 simultaneous process,
but it´s having a strange behave in the pics moments.
Yesterday it had 30 processes running and an average of other 30
process queued about 30 minutes.
In that moment it took about 80 seconds to show a webpage that
is shown in 8 seconds in normal situations.
I thought some function ou query could being getting too many resources
from the server.
So, I enabled coldfusion debugging and checked the output.
In debugging output every process (function/query) seemed to be running
fast,
for example, supposing I have a "index.cfm" with the follow content:
index.cfm
--------------------
<cfsilent>
<cfset stPage = CreateObject( "component", "home" ).processPage() />
</cfsilent>
<cfinclude template="mainpage.cfm" />
--------------------
and "mainpage.cfm" has some <cfoutput query>'s and some other functions.
The debug output looked like that:
--------------------
50000ms - index.cfm
400ms - mainpage.cfm
300ms - CFC[ home.cfc | processPage() ]
250ms - CFC[ home.cfc | getInfo() ]
200ms - CFC[ home.cfc | function_1() ]
150ms - CFC[ home.cfc | function_2() ]
100ms - CFC[ home.cfc | function_3() ]
--------------------
It seems all the processment runs fine, and when the Coldfusion receives
the returns and would show the result it slows the process for some reason.
Still in that moment I checked the server
- load (uptime) was between 2.5 and 3.0
- The CPU usage was about 55%
- Database (another hardware) showed no SQL query running and 21 active
connections (sleep).
- % of alocated memory was about 35%
After the site cames to the normal, I checked the total page hits in
that moment
and compared with the fast moments, but I didn´t see any difference that
could justify that behave.
After the whole analyzes I got the conclusion that the system is much faster
with 10 simultaneous process than with 30 simultaneous process in pics
moments, but I didn´t figured out why, once the system load didn´t show
any overload signal.
Is there another thing to be tuned that I forgot?
Is there a way to have a Coldfusion server handling more then 10
simultaneous
requests efficiently in one hardware with two processors (standard license)?
Any help would be appreciated,
Ronan
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