# Server 2 causing application slowness

**URL:** <https://community.f5.com/t/server-2-causing-application-slowness/74519>\
**Category:** Technical Forums\
**Created:** [May 18, 2024, 3:09pm UTC](https://community.f5.com/t/server-2-causing-application-slowness/74519 "2024-05-18T15:09:43Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![blackpier1010](https://avatars.discourse-cdn.com/v4/letter/b/dc4da7/32.png) [@blackpier1010](https://community.f5.com/u/blackpier1010)\
**Post date:** [May 18, 2024, 3:09pm UTC](https://community.f5.com/t/server-2-causing-application-slowness/74519/1 "2024-05-18T15:09:43Z")

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In the production environment, there’s an ongoing issue where traffic from backend server 2 is causing application problems, while traffic from server 1 and server 3 isn’t impacting the customer experience. How can I troubleshoot this in the load balancer?

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<div class="post-metadata">

**Author:** ![Paulius](https://d1p9zq3aats0t8.cloudfront.net/user_avatar/community.f5.com/paulius/32/21698_2.png) [@Paulius](https://community.f5.com/u/Paulius)\
**Post date:** [May 19, 2024, 1:22am UTC](https://community.f5.com/t/server-2-causing-application-slowness/74519/2 "2024-05-19T01:22:50Z")

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You can try using the following tcpdump which will save it to “/shared/tmp/” and then open it up in wireshark to see if you can see any glaring issues.

tcpdump -nni 0.0:nnp host \<server\_2\_IP\> and port \<server\_2\_port\> -w /shared/tmp/server2\_tshoot.pcap

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<div class="post-metadata">

**Author:** ![zamroni777](https://d1p9zq3aats0t8.cloudfront.net/user_avatar/community.f5.com/zamroni777/32/1473_2.png) [@zamroni777](https://community.f5.com/u/zamroni777)\
**Post date:** [May 19, 2024, 1:12pm UTC](https://community.f5.com/t/server-2-causing-application-slowness/74519/3 "2024-05-19T13:12:52Z")

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for quick fix, you can try change the pool’s load balancing method to Fastest (Application)

> **[About Pools | BIG-IP Documentation](https://techdocs.f5.com/en-us/bigip-14-1-0/big-ip-local-traffic-management-basics-14-1-0/about-pools.html#GUID-6FF775B8-860A-4B80-B6E8-19D22DA58741)**
>
> Usage information and technical documentation for BIG-IP and other related F5 products

if the application is http/s based, also ensure that Oneconnect is enabled for HTTP profile assigned to the virtual server.

 ![image_329897.png](https://d20hrnpixdzcsd.cloudfront.net/original/2X/3/3cc6ab53e999cafaf309117a5fe2f9c4d969a3b1.png)