The scheduling priority is equivalent to the nice command in UNIX. It sets the execution priority for a process, which determines in what order the operating system runs processes.
In general, the priority range spans from 0 to 20. However, different operating systems interpret these values differently.
The lower the value, the higher the priority (faster execution). To raise the priority of the agent to high, you must enter a negative number. However, raising the priority to high is not advisable because it uses significantly more system resources and can cause other applications to crash. The following list provides the ranges of values of priority:
These systems have a default process priority. The PATROL priority is added to the default priority to determine the agent's process priority on the OS.
default process priority + agentPriority = agent process priority on the OS
This configuration variable affects the priority of the agent process on the Windows platform. The agent's default priority is normal. To change the agent process's priority, you must use the Windows Task Manager.
Windows priorities in order of highest to lowest are:
In addition, Windows 2000 offers priorities of AboveNormal and BelowNormal.
To set the priority for the PATROL Agent, specify ranges for the /AgentSetup/AgentTuning/agentPriority variable as prescribed in the following list:
The higher the value, the higher the priority (faster execution). The current process's priority is the default priority.
Priorities range from 0 to 63, where 63 is the highest.
Priorities range from 0 to 31, where 31 is the highest.
The /AgentSetup/AgentTuning/agentPriority configuration variable specifies the operating system scheduling priority for the PATROL Agent process.
Format and type of data | Numeric, not applicable |
Default value | 10 |
Minimum and maximum | 0, 19 |
Override | None |
Dependencies | None |
Recommendation | The agent process is given a medium priority so that it does not interfere with the processes of the application that it is monitoring. |
The /AgentSetup/AgentTuning/userPriority configuration variable specifies the operating system scheduling priority for processes created by the PATROL Agent. These processes are external processes that the agent spawns from the main run queue.
Format and type of data | Numeric, not applicable |
Default value | 0 |
Minimum and maximum | 0, 20 |
Override | None |
Dependencies | None |
Recommendation | None |
The /AgentSetup/AgentTuning/procCachePriority configuration variable specifies the operating system scheduling priority for the process that refreshes the process cache.
Format and type of data | Numeric, not applicable |
Default value | 10 |
Minimum and maximum | 0, 20 |
Override | None |
Dependencies | None |
Recommendation | None |
The /AgentSetup/AgentTuning/procCacheSchedPriority configuration variable specifies the Internal PATROL Agent scheduling priority for the process that refreshes the process cache.
Format and type of data | Numeric, not applicable |
Default value | 1 |
Minimum and maximum | 0, 20 |
Dependencies | None |
Recommendation | Set this process high (0, 1, or 2). The PATROL process cache must be refreshed before other internal agent processes run. |