# Logstash 7.9 high CPU, RAM and hangs when a unicode message is received by syslog input

**URL:** <https://discuss.elastic.co/t/logstash-7-9-high-cpu-ram-and-hangs-when-a-unicode-message-is-received-by-syslog-input/269885>\
**Category:** Logstash\
**Created:** [April 12, 2021, 1:36pm UTC](https://discuss.elastic.co/t/logstash-7-9-high-cpu-ram-and-hangs-when-a-unicode-message-is-received-by-syslog-input/269885 "2021-04-12T13:36:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ivorthe3ngine](https://avatars.discourse-cdn.com/v4/letter/i/b782af/32.png) [@ivorthe3ngine](https://discuss.elastic.co/u/ivorthe3ngine)\
**Post date:** [April 12, 2021, 1:36pm UTC](https://discuss.elastic.co/t/logstash-7-9-high-cpu-ram-and-hangs-when-a-unicode-message-is-received-by-syslog-input/269885/1 "2021-04-12T13:36:45Z")

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Hi All, any assistance on this issue would be most appreciated.

On receiving the following message, logstash stopped processing any further incoming messages and began consuming high CPU.

- Version: 7.9.0
- Operating System: RHEL 7
- Config File:  
input {  
syslog {  
codec =\> cef  
port =\> 514  
}  
}
- Sample Data:  
[WARN] 21-04-09 20:39:33 [Ruby-0-Thread-136: :1] plain - Received an event that has a different character encoding than you configured. {:text=\>",\<12\>Apr 0:39:48 hostname \xB0\u0014[17693]: remainder of message redacted", :expected\_charset=\>"UTF-8"

---

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [May 10, 2021, 1:36pm UTC](https://discuss.elastic.co/t/logstash-7-9-high-cpu-ram-and-hangs-when-a-unicode-message-is-received-by-syslog-input/269885/2 "2021-05-10T13:36:46Z")

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