Failed to start thread - pthread_create failed (EAGAIN) for attributes:

Products

• CA Performance Management - Usage and Administration
• CA Mediation Manager
• DX NetOps

Issue/Introduction

In Mediation Manager, we are constantly getting the warning for the below message under /opt/CA/CAMM/LC/DS/logs/CAMM-Delivery-System-STD-OUTPUT-*.log

[warning][os,thread] Failed to start thread - pthread_create failed (EAGAIN) for attributes: stacksize: 1024k, guardsize: 0k, detached.

Environment

All supported releases

Cause

This is due to hitting the OS cap for the number of processes, this is the ulimit -u setting.  In essence, Mediation Manager is trying to do too many things at once according to the operating system and it is being limited.

Resolution

Increase the ulimit -u value, even to a possible max of 65536.