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New Member

Issues with a http get keepalive

We are having a issue with some keepalives that are causing our web servers to run really slow. I have explained the environment below and provided some configs from the CSS

I would appreciate any insight you could provide as to why this issue is occuring and how we might avoid them.

Thanks,

Jim

Environment:

CSS 11150 with 4.01 (Build 19) code.

We have 2 applications that connect to backend oracle databases. In order to monitor the database connections, we wrote an asp page for each application that queries the database and returns a normal status web page if a connection was established. If the database connection can not be obtained, an error web page is returned. We created 2 services with a keepalive method of get pointing to the asp page we wrote with the expectation that it would create a checksum for the normal web page.

Issue:

The problem we are having is that when we activate these two services, the web server that is running the applications slow down considerably. In addition to the speed issues, we also sometimes get a page cannot be displayed error from the application. If you get a page cannot be displayed error but hit refresh in your browser the application comes back. If we suspend the services the server speeds back up and we have no issues with the application.

Configuration:

**************************Service**********************

service web02qi-compoint-SMDR

ip address 172.28.1.102

keepalive type http

keepalive frequency 10

keepalive maxfailure 2

keepalive method get

keepalive uri "/keepalive/compointkeepalive.asp"

service web02qi-issuestrk-SMDR

ip address 172.28.1.102

keepalive type http

keepalive frequency 10

keepalive maxfailure 2

keepalive method get

keepalive uri "/keepalive/crmdbcheck.asp"

************************Owner*************************

content compoint1

protocol tcp

port 80

url "/dataproducts/*"

add service redirect-compoint

vip address 172.28.1.100

balance aca

add service web02qi-compoint-SMDR

active

content compoint2

protocol tcp

port 80

url "/dpcompoint/*"

add service redirect-compoint

vip address 172.28.1.100

balance aca

add service web02qi-compoint-SMDR

active

content issuestrk

protocol tcp

port 80

url "/crmdpd/*"

add service redirect-issuestrk

vip address 172.28.1.100

add service web02qi-issuestrk-SMDR

balance aca

active

1 REPLY
New Member

Re: Issues with a http get keepalive

What happen if you remove your uri in the service, do the server speed return to normal? What is the serivce 'redirect-compoint'? Try to remove any unnecessary commands such as balance aca to see if anything changes?

What is the response time of your keepalive asp pages? What happen if you run this asp page on another computer while you're access the application on differnent computer? Trying to simulate what CSS is trying to do and see what happen.

If nothing else works, try to upgrade to the version 5.0.

Hope this help.

Brad

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