Splunk website monitoring Thread limit reached

[Ramesh_Euddham]

Hello all,

We have encountered a performance issue with our website monitoring inputs. It appears that the thread limit reached, causing multiple input executions to be skipped. This led to a significant load on our server, and eventually, the website monitoring app stopped functioning.

2025-08-19 15:59:59,634 WARNING Thread limit has been reached and thus this execution will be skipped for stanza=XXXX, thread_count=200
2025-08-19 15:59:59,567 WARNING Thread limit has been reached and thus this execution will be skipped for stanza=XXXX, thread_count=200
2025-08-19 15:59:59,537 WARNING Thread limit has been reached and thus this execution will be skipped for stanza=XXXX, thread_count=200
2025-08-19 15:59:59,387 WARNING Thread limit has been reached and thus this execution will be skipped for stanza=XXXX, thread_count=200
2025-08-19 15:59:59,360 WARNING Thread limit has been reached and thus this execution will be skipped for stanza=XXXX, thread_count=200
2025-08-19 15:59:59,332 WARNING Thread limit has been reached and thus this execution will be skipped for stanza=XXXX, thread_count=200
2025-08-19 15:59:59,300 WARNING Thread limit has been reached and thus this execution will be skipped for stanza=XXXX, thread_count=200
2025-08-19 15:59:59,236 WARNING Thread limit has been reached and thus this execution will be skipped for stanza=XXXX, thread_count=200
2025-08-19 15:59:59,209 WARNING Thread limit has been reached and thus this execution will be skipped for stanza=XXXX, thread_count=200
2025-08-19 15:59:59,182 WARNING Thread limit has been reached and thus this execution will be skipped for stanza=XXXX, thread_count=200
2025-08-19 15:59:59,156 WARNING Thread limit has been reached and thus this execution will be skipped for stanza=XXXX, thread_count=200
2025-08-19 15:59:59,131 WARNING Thread limit has been reached and thus this execution will be skipped for stanza=XXXX, thread_count=200
2025-08-19 15:59:59,105 WARNING Thread limit has been reached and thus this execution will be skipped for stanza=XXXX, thread_count=200

This is happening frequently  and restarting Splunk isn't helping. 

If anyone has experienced similar issues or has suggestions on how to manage thread limits more effectively  your input would be greatly appreciated

[livehybrid]

Hi @Ramesh_Euddham 

Under the Configuration page/tab for the Website Monitoring app, what do you have under Thread Limit? 

It sounds like you have more website checks configured than the amount of threads and the add-on is skipping some of your checks. Consider increasing this limit to see if this resolves the issue.

The relevant code for this is at https://raw.githubusercontent.com/LukeMurphey/splunk-website-monitoring/442d08de5bbfed4a879de3b537ea...

https://raw.githubusercontent.com/LukeMurphey/splunk-website-monitoring/442d08de5bbfed4a879de3b537ea...

[Ramesh_Euddham]

Hi @livehybrid,

I initially increased the thread limit to 300, but it continued to hit the maximum threshold, causing failures when processing new inputs. Interestingly, the issue was resolved when I reduced the limit to 100.

However, after upgrading to Splunk Enterprise version 9.4.5, the problem resurfaced. I’ve now lowered the thread limit to 50, and it appears to be stable again.

Any insights or recommendations to help prevent this issue from recurring in the future would be greatly appreciated.