UNIX Resource Monitoring

The UNIX Resources monitor shows the UNIX resources measured during the test run. This graph helps you determine the impact of Vuser load on the various system resources.

Set up the UNIX monitoring environment

This task describes how to configure the UNIX environment before setting up the UNIX monitor.

  1. Verify whether the rstatd daemon is already configured

    The rstatd daemon might already be configured, because when a machine receives an rstatd request, the inetd on that machine automatically activates the rstatd.

    • The rup command reports various machine statistics, including rstatd configuration. Run the following command on the UNIX machine to view the machine statistics:

    • >rup host

    • You can also use lr_host_monitor and see if it returns any relevant statistics.

    • If the command returns meaningful statistics, the rstatd daemon is already configured and activated. If not, or if you receive an error message, the rstatd daemon is not configured.

  2. Configure the rstatd daemon

    If the rstatd daemon is not yet configured, follow these steps to configure it:

    1. On the UNIX machine, run the command: su root

    2. Go to /etc/inetd.conf and look for the rstatd row (it begins with the word rstatd). If it is commented out (with a #), remove the comment directive, and save the file.

    3. From the command line, run:

    4. kill -1 inet_pid

      where inet_pid is the pid of the inetd process. This instructs the inetd to rescan the /etc/inetd.conf file and register all daemons which are uncommented, including the rstatd daemon.

    5. Run rup again.

      If the command still does not indicate that the rstatd daemon is configured, contact your system administrator.

  3. Configure the monitor for a UNIX machine over a firewall (optional)

    To monitor a UNIX machine over a firewall, you must run a UNIX utility called rpcinfo and identify the rstatd's port number.

    Run rpcinfo -p <hostname>. You will receive a list of all RPC servers registered in the host's portmapper, along with the port number. This list will not change until rstatd is stopped and rerun.

    Some firewalls allow you to open an RPC program number instead of a port. In such cases, open program 100001. If are prompted to include a version number, specify versions 3 and 4.

  4. Configure the monitor measurements from the monitor profile.

    For task details, see Configure the UNIX Resource monitor below.

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Configure the UNIX Resource monitor

  1. Configure the UNIX Resources monitor from the monitor profile

    For task details, see Create and configure monitor profiles.

  1. Specify which resources you want to measure

    The following default measurements are available for the UNIX machine:

    Measurement

    Description

    Average load

    Average number of processes simultaneously in Ready state during the last minute.

    Collision rate

    Collisions per second detected on the Ethernet.

    Context switches rate

    Number of switches between processes or threads, per second.

    CPU utilization

    Percent of time that the CPU is utilized.

    Disk rate

    Rate of disk transfers.

    Incoming packets error rate

    Errors per second while receiving Ethernet packets.

    Incoming packets rate

    Incoming Ethernet packets per second.

    Interrupt rate

    Number of device interrupts per second.

    Outgoing packets errors rate

    Errors per second while sending Ethernet packets.

    Outgoing packets rate

    Outgoing Ethernet packets per second.

    Page-in rate

    Number of pages read to physical memory, per second.

    Page-out rate

    Number of pages written to pagefiles and removed from physical memory, per second.

    Paging rate

    Number of pages read to physical memory or written to pagefiles, per second.

    Swap-in rate

    Number of processes being swapped in.

    Swap-out rate

    Number of processes being swapped out.

    System mode CPU utilization

    Percent of time that the CPU is utilized in system mode.

    User mode CPU utilization

    Percent of time CPU is utilized in user mode.

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