Stopping performance data collection, Increasing the maximum number of ldevs – HP XP Performance Advisor Software User Manual

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If you are collecting performance data for the first time on the array, it takes longer than usual for

PA XP to get the data. Subsequent performance data collection on the array is as per the time

specified in the Frequency text box.

NOTE:

To ensure optimal performance and results, the maximum number of LDEVs for data

collection is 6000. This is the total number of LDEVs across all arrays that are visible to a

particular host agent. You can decrease the total number of LDEVs visible to a host agent,

by restricting the LDEVs that visible to the host. You can increase the maximum number

of LDEVs visible to a host agent, by increasing the number of LDEVs that are visible to

the host. For information on increasing the number of LDEVs that are visible to the Host

Agent, see

Stopping performance data collection

The Data Collection Configuration screen allows you to specify whether or not you want to collect

performance data. To stop collecting performance data on a command device, complete the following

steps:

Select a row in the list box to highlight the command device(s) that you want to stop collecting

data on.

Select Collect Performance Data.

Select Stop Data Collection.

Click Submit. Performance data collection on the command device stops.

Increasing the maximum number of LDEVs

To ensure optimal performance and results, the maximum number of LDEVs for data collection is restricted

to 6000. To increase the maximum number of LDEVs to 16000, increase the amount of memory given

to the JVM when you start the host agent and management station services. You can do this for the

management station and the host station.

For the management station

To increase the maximum number of LDEVs for the management station, complete the following steps:

Open the file: HPSS\pa\tomcat\conf\wrapper.properties

Edit the last line of the following file from:
wrapper.cmd_line=$(wrapper.javabin) -Dhpss.home.dir= $(hpss_home)

-Xmx384m -Xrs -classpath $(wrapper.class_path)$(wrapper.startup_class)

-config $(wrapper.server_xml -home $(wrapper.tomcat_home)
to
wrapper.cmd_line=$(wrapper.javabin) -Dhpss.home.dir= $(hpss_home)

-Xms256M -Xmx512M -Xrs -classpath $(wrapper.class_path)

$(wrapper.startup_class) -config $(wrapper.server_xml -home

$(wrapper.tomcat_home)

For the host agent on UNIX/Linux hosts

To increase the maximum number of LDEVs for the host agent on a UNIX or Linux host, complete the

following steps:

Open the file: /opt/sanmgr/hostagent/sbin/HA_trigger

Edit the following line from:

HP StorageWorks Performance Advisor XP Software user guide