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sand87ch's avatar
sand87ch
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Dec 05, 2022

BigIP F5 LTM fails during Load testing

My Set up has a BIGIP single CPU hosted on AWS.This sits in front of a node API i use for load testing. Now when i send a 1K_1krpm request..i.e., 5000 requests in 5 mins to my node api via the BIG I...
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Kai_Wilke's avatar
Kai_Wilke
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Dec 06, 2022

Hi Sand87ch,

you could flush your logs via SSH.

 

[itacs@kw-f5-dev:Active:Standalone] / # > /var/log/ltm
[itacs@kw-f5-dev:Active:Standalone] / # > /var/log/audit
[itacs@kw-f5-dev:Active:Standalone] / # > /var/log/messages

 

 

Instead of flushing those logs, you could just use tail your ltm log during your tests to see what happens...

 

[itacs@kw-f5-dev:Active:Standalone] / # tail -f /var/log/ltm

 

 

If the default logs wont give you a clue whats happening, you may turn on TCP-RST logging and repeat the test again...

Configuring the BIG-IP system to log TCP RST packets (f5.com)

Cheers, Kai

 

sand87ch's avatar
sand87ch
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Dec 07, 2022

Hi Kai,

I will do this.Meanwhile following this doc viz., https://techdocs.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/ltm-implementations-12-1-0/27.html  i made some changes and tested.

However still the errors keep coming in jmeter like the screenshot posted yesterday.

I made the changes in my Big IP VE ,nodes and pools.i set the following in my BIGIP VE

virtual server advanced section

And set the request queue depth to yes in pools but without any success.

  • Kai_Wilke's avatar
    Kai_Wilke
    Icon for MVP rankMVP
    Dec 07, 2022

    I would recommend to remove such limits, if you dont have the need to restict one VS from consuming too much network ressources, so that other VS can continue to work stable.

    Cheers, Kai