Bad Performance and "U0003413 Socket call 'send(31511)' returned error code '32'. Broken pipe" errors

Products

• CA Automic Workload Automation - Automation Engine

Issue/Introduction

Error Message :
U0003413 Socket call 'send(31511)' returned error code '32'.
Broken pipe

If experiencing an overall degradation in the performance of the Automation Engine (AE) and are seeing the following symptoms:

• The Performance of the system decreases in general.
• The UI User facing bad performance or UI freezes for some minutes.
• The automated processing seems to be not influence that much.
• The number of records in the MQCP-Tables goes up to several thousand, the system can bring it down to a normal value for a short time. Than the number of records got up again.

In the CP logs the following Socket errors messages are issued over and over:
 

20160203/114402.109 - U0003413 Socket call 'send(31511) returned error code '32'.
20160203/114402.109 -          Broken pipe
20160203/114402.109 - U0003413 Socket call 'send(31511)' returned error code '32'.
20160203/114402.109 -          Broken pipe
...

 

Cause

Root Cause:

The size of the TCP/IP Message Buffer within the operation system is too small for the needs of the Automation Engine environment.

Resolution

The size of the TCP/IP Message Buffer within the operating system is too small for the needs of the Automation Engine environment.
Change TCP/IP Message Buffer from 128kB to 4MB.

Linux Environments

Set the following parameters:
 

net.core.rmem_max = 4194304
net.core.wmem_max = 4194304
net.core.rmem_default = 262144
net.core.wmem_default = 262144
net.ipv4.tcp_mem = 4194304 4194304 4194304
net.ipv4.tcp_wmem = 4096 262144 4194304
net.ipv4.tcp_rmem = 4096 262144 4194304

Fix Status: No Fix

Fix Version(s):
N/A

Additional Information

Workaround :
N/A