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Forum Discussion

haeoraki_127471's avatar
haeoraki_127471
Icon for Nimbostratus rankNimbostratus
Apr 22, 2004

About GLOBAL_STATISTIC_TOTAL_CONNECTIONS

Two nodes connect to BIG-IP device.   When I check the value of GLOBAL_STATISTIC_TOTAL_CONNECTIONS, it   is 0 at first.     When I connect to one node with web browser, the val...
dev
devops
iControl
v4
Joe_Pruitt's avatar
Joe_Pruitt
Apr 23, 2004
First of all, I'm assuming that you are connecting to a node through a VIP. This is not explicitly stated in your message and it could be inferred that when you said "connect to node" you meant directing the browser to the ip address of the node, and not the VIP that is managed by.

 

 

Assuming that you are going through a VIP, the curernt connections represent the number of connections that are active at the time you request the statistic. If you are just using a browser to connect to a web page, then odds are the browser is not keeping a session open to the node but creating and then tearing it down after the page is rendered. Then you are requesting the statistic after the connection is already torn down by the browser so the statistic request will show 0 current connections. The only way to really test this is to throw a bunch of parallel recursive GET's (wget and curl come to mind as useful client side tools) and then monitor the statistics while connections are being made.

 

 

As for the total connections issue. Total connections represent a running total of all the connections that have come in through the given VIP or Pool (depending on which statistic you are getting). This is a counter that should never drop back to 0 unless you specifically reset the statistics or the counter rolls over past the 32bit boundary of an integer.

 

 

You might try getting the statistics for the specific VIP or Pool that you are flowing traffic through and see if the values are correct there. I'm not sure why the global total connections don't go up with parallel browser requests.

 

 

I've tried to answer this the best I can, but this really isn't an iControl development question, but one of the functionality of the BIG-IP. If you need further assistance with how the BIG-IP's statistics are generated, I'd recommend you contact our BIG-IP support group where you can get a better answer.

 

 

F5 Technical Support

 

Email: support@f5.com

 

Phone: 206-272-6888

 

Web: http://www.f5.com/support/

 

AskF5: http://tech.f5.com/

 

 

If find out more information on the total connections issue, I'll post it here.

 

 

-Joe