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Why is splunk-winevtlog.exe crash, low thruput, high cpu and other incorrect eventcode filtering not working?

hrawat_splunk
Splunk Employee
Splunk Employee

splunk-winevtlog.exe crash, low thruput, high cpu  utilization and eventcode filtering not working as expected with 8.1.x/8.2.x/9.0

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1 Solution

hrawat_splunk
Splunk Employee
Splunk Employee

If you have  filtering enabled that will filter more than one event e.g as follows, there is a known issue found with all 8.1.x/8.2.x and 9.0. Next 9.0.1 will have the fix. 8.0.x is not impacted.

 

 

whitelist1 = EventCode="299|342|394|500|501|528|624|627|628|629|630|644|672|4608|4610|4611|4614|4616|4622|4624|4625|4634|4647|4648|4662|4670|4720|4723|4724|4725|4726|4728|4729|4731|4732|4734|4735|4738|4740|4741|4742|4743|4756|4757|4767|4768|4769|4771|4776|4778|4779|4781|4800|4801|4904|4905|4907|4946|4947|4948|5136|5137|5140|5141"

 

 

 

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hrawat_splunk
Splunk Employee
Splunk Employee

If you have  filtering enabled that will filter more than one event e.g as follows, there is a known issue found with all 8.1.x/8.2.x and 9.0. Next 9.0.1 will have the fix. 8.0.x is not impacted.

 

 

whitelist1 = EventCode="299|342|394|500|501|528|624|627|628|629|630|644|672|4608|4610|4611|4614|4616|4622|4624|4625|4634|4647|4648|4662|4670|4720|4723|4724|4725|4726|4728|4729|4731|4732|4734|4735|4738|4740|4741|4742|4743|4756|4757|4767|4768|4769|4771|4776|4778|4779|4781|4800|4801|4904|4905|4907|4946|4947|4948|5136|5137|5140|5141"

 

 

 

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Thundercat88
Observer

Hi, 

I am interested to know more if there is tactical remediation to this issue affecting 8.2.X? before upgrading to version 9.0

We are seeing very high CPU utilisation in our AWS EC2 instances, which has meant we have to restart the Splunk universal forwarder.

Appreciate if Splunk have a remediation for this.

Many thanks.

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