# High CPU Utilization & Response Time on Wowza Server

**URL:** <https://community.wowza.com/t/high-cpu-utilization-response-time-on-wowza-server/47412>\
**Category:** Wowza Streaming Engine\
**Created:** [August 22, 2016, 2:19pm UTC](https://community.wowza.com/t/high-cpu-utilization-response-time-on-wowza-server/47412 "2016-08-22T14:19:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Anish\_Kumar](https://avatars.discourse-cdn.com/v4/letter/a/b487fb/32.png) [@Anish\_Kumar](https://community.wowza.com/u/Anish_Kumar)\
**Post date:** [August 22, 2016, 2:19pm UTC](https://community.wowza.com/t/high-cpu-utilization-response-time-on-wowza-server/47412/1 "2016-08-22T14:19:54Z")

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We are facing very high response time in delivering the chunks ( Chunk Size 6 sec) to requested server. Whenever there is request/network utilization on Wowza server for more than 2.5 -3 Gbps, response time increases to 20-30 sec and when utilization is less than 2 Gbps , response time is less than 1 sec . At same time CPU Utilization increases from 10 % to 70% . And most of CPU is consumed by java process.

We are using HP DL 380 Gen 8 with 192 GB RAM and CPU 48 Cores. Network Interface is of 20 Gbps bonding.

OS is CentOS 6.5 with Kernel Version 2.6.32-431.el6.x86\_64.

Wowza Version : 4.2.0

We are using Wowza for VOD Content Streaming into HLS.

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**Author:** ![Andrew\_Ramberg](https://avatars.discourse-cdn.com/v4/letter/a/7c8e57/32.png) [@Andrew\_Ramberg](https://community.wowza.com/u/Andrew_Ramberg)\
**Post date:** [September 5, 2016, 11:47am UTC](https://community.wowza.com/t/high-cpu-utilization-response-time-on-wowza-server/47412/2 "2016-09-05T11:47:40Z")

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Hello,

Have you already run through the tuning guide?

[Performance Tuning Guide](https://www.wowza.com/docs/how-to-do-performance-tuning)

The latest installers starting with 4.2.0 include a tuned version of Java but if the installation but with a system that has a large amount of CPU cores like this, it may still be helpful to run through the manual tuning instructions.

Best regards,

Andrew

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**Author:** ![Shozab\_Ali](https://avatars.discourse-cdn.com/v4/letter/s/22d042/32.png) [@Shozab\_Ali](https://community.wowza.com/u/Shozab_Ali)\
**Post date:** [September 10, 2023, 4:19pm UTC](https://community.wowza.com/t/high-cpu-utilization-response-time-on-wowza-server/47412/3 "2023-09-10T16:19:37Z")

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Hy anish. Did you find any solution to your problem? I also have high spec server, 24 cpus, 24gb ram, 20gbps nic. But then traffic goes beyong 2gbps, streams start to pixelate. Cpu utilization of single cpu reaches 90% and other 23 cpus are under 20%. Done all the tuning steps mentiined by wowza articles but in vain. Any help pls