# mysql5.6 mysql process uses 50% CPU all the time.
**URL:** https://forums.percona.com/t/mysql5-6-mysql-process-uses-50-cpu-all-the-time/4202
**Category:** Other MySQL® Questions
**Created:** [May 5, 2015, 1:01pm UTC](https://forums.percona.com/t/mysql5-6-mysql-process-uses-50-cpu-all-the-time/4202 "2015-05-05T13:01:36Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@pintu\_ag23](https://forums.percona.com/u/pintu_ag23)
#### Post date: [May 5, 2015, 1:01pm UTC](https://forums.percona.com/t/mysql5-6-mysql-process-uses-50-cpu-all-the-time/4202/1 "2015-05-05T13:01:36Z")
We are in the process of upgrading mysql from 5.5 to 5.6 and we have upgraded one test instance.
Test instance on 5.5 give the following top output. [COLOR=#FFF0A5]
[COLOR=#FFF0A5]
[COLOR=#FFF0A5]
[COLOR=#FFF0A5]
[COLOR=#FFF0A5]
[COLOR=#FFF0A5]
[COLOR=#13773E]
[COLOR=#FFF0A5]
Test instance on 5.6 give the following top output.
[COLOR=#FFF0A5]
[COLOR=#FFF0A5]
[COLOR=#FFF0A5]
[COLOR=#FFF0A5]
[COLOR=#FFF0A5]
[COLOR=#FFF0A5]
[COLOR=#13773E]
[COLOR=#FFF0A5]
Can you please advice what needs to be done to make CPU utilization lower in 5.6 as 5.5?
Amit
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### Author:  [@pintu\_ag23](https://forums.percona.com/u/pintu_ag23)
#### Post date: [May 13, 2015, 1:54pm UTC](https://forums.percona.com/t/mysql5-6-mysql-process-uses-50-cpu-all-the-time/4202/2 "2015-05-13T13:54:35Z")
Any update about this?
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### Author:  [@jrivera](https://forums.percona.com/u/jrivera)
#### Post date: [May 21, 2015, 4:23pm UTC](https://forums.percona.com/t/mysql5-6-mysql-process-uses-50-cpu-all-the-time/4202/3 "2015-05-21T16:23:24Z")
Run pt-mysql-summary on 5.5 and 5.6 then paste results here.
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### Author:  [@pintu\_ag23](https://forums.percona.com/u/pintu_ag23)
#### Post date: [December 1, 2015, 4:03pm UTC](https://forums.percona.com/t/mysql5-6-mysql-process-uses-50-cpu-all-the-time/4202/4 "2015-12-01T16:03:46Z")
This has been resolved after engaging Vadim (Percona CTO), thanks for your response though.