The eG Installation Guide - eG Innovations

Installing and Configuring on Unix
6. Finally, save the starta script.
7. Restart the agent.
Note:
Figure 2.22: The edited starta script
Before attempting to administer the eG Enterprise system, ensure that sysstat package is installed
on the component to be monitored (check for the existence of the iostat command on the target
system). The DiskActivity Test will not function on Unix environments without the sysstat package.
2.12 Performance Impact of the eG Agent
The resource utilization of an eG agent is dependent on various factors including:
the number of components that are being monitored by the eG agent;
the specific component types to be monitored;
the frequency of monitoring;
whether the agent is monitoring applications in an agent-based or an agentless manner;
For an internal agent monitoring a single application on the server at a 5 minute frequency, the agent
typically consumes 0.1-0.3% of CPU. Network traffic generated by the agent is about 0.05 – 0.2 kbps.
The size of the agent on disk is about 100 MB. While a 32-bit eG agent will consume a heap memory
of 64 MB on an average, the heap memory footprint of a 64-bit agent is 128 MB on an average.
For an agent that monitors multiple applications on a server, or for an agent that monitors
components in an agentless/external manner, the CPU, memory, and network bandwidth usage will be
higher.
2.13 Increasing the Memory of the eG Agent
The eG agent runs as a Java process. The maximum heap memory that can be allocated to a 32-bit
eG agent process is limited to 1.5 GB. The maximum heap memory allocation to a 64-bit eG agent
process on the other hand, is limited to 3 GB. If an eG agent has been configured to monitor many
components, then, you may have to allocate more heap memory to the eG agent. In such a case,
follow the steps below for a Unix agent:
1. Login to the eG agent host.
2. Edit the start_agent script in the /opt/egurkha/bin directory.
3. Look for the entry -Xmx in the file. You will find the following entry:
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