Slow Response on webserver

The only solution that I was able to use was monitoring the monitor. We have monitors in my company that measure slowness from the client's perspective. Thus we pointed F5 monitors to the results of those monitors. Based on that we determine whether the APP is up or down.

 

 

I hope that helps,

 

Bhattman

Hi Bhattman,

 

 

How i am going to monitor the monitor ????, i did not get it, is this feature in BigIP or do i need to create monitor ??

 

 

thanksss

hi Bhattman,

 

 

any help

 

 

thanksss

Hi, The Bhattman is suggesting using an external monitoring system entirely, not something available with BIG-IP, to monitor client or server performance and then having the BIG-IP health monitor point to something on that system.

 

 

Other options might include;

 

 

1) Lowering your health monitor timers?

 

2) Having the web server generate and update a specific page related to it's performance and using that with a health monitor

 

3) Using a iRule sideband connection somehow

 

4) Using an iRule with a Statistics profile

From experience, if one virtual is slow and none of the other virtuals are slow, then it's not the BIG-IP.

 

Troubleshooting steps outside of the F5:

 

Download and install fiddler2. If you need to decrypt SSL traffic, check the help page on setting that up.

 

Open fiddler2, clear your web cache, and hit the website on the virtual server IP. Highlight the transactions and click the timeline. You can see what is taking so long to load.

 

 

Next, modify your local host file to bypass the F5 and go directly to the server.

 

Clear your webcache, and hit the website again. If it's stil slow, then you know it's the server. Gather the timeline info and foward to your dev/server team. It's on them at this point.

 

Do this for every server in the pool. It's possible that you have a single webserver that is the culprit.

 

 

Good luck.