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Message Icon Topic: Introduction-to-Loadrunner-Part-8

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Mithi25
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Quote Mithi25 Replybullet Topic: Introduction-to-Loadrunner-Part-8
    Posted: 02Nov2009 at 11:44pm

LoadRunner Monitors

  • LoadRunner Controller is integrated with real-time monitoring capabilities.
  • Real-time monitoring helps to record all the system and application related information during the entire run of the test with definite sampling interval. This would help to isolate, identify and resolve performance bottlenecks through the analysis of the data collected through the various system counters collected during monitoring.


List of Key LoadRunner Monitors

  • Windows Resource Monitor
  • Unix Resource Monitor
  • Web Server Monitors (Apache, IIS, iPlanet)
  • Database Monitors (Oracle, DB2, SQL Server, Sybase)
  • Application Server Monitors (Weblogic, Websphere, Oracle 9i Apps Server)
  • ERP/CRM Server Resource Monitors (Siebel, SAP, Peoplesoft)
  • Middleware Resource Monitors (Tuxedo, IBM MQ Series)
  • J2EE Performance Monitors

    Object
    Measurement
    Description
    Web Service
    Bytes Sent/sec
    The rate at which the data bytes are sent by the Web service
    Web Service
    Bytes Received/sec
    The rate at which the data bytes are received by the Web service
    Web Service
    Get Requests/sec
    The rate at which HTTP requests using the GET method are made. Get requests are generally used for basic file retrievals or image maps, though they can be used with forms.
    Web Service
    Post Requests/sec
    The rate at which HTTP requests using the POST method are made. Post requests are generally used for forms or gateway requests.
    Web Service
    Maximum Connections
    The maximum number of simultaneous connections established with the Web service
    Web Service
    Current Connections
    The current number of connections established with the Web service
    Web Service
    Current NonAnonymous Users
    The number of users that currently have a non-anonymous connection using the Web service
    Web Service
    Not Found Errors/sec
    The rate of errors due to requests that could not be satisfied by the server because the requested document could not be found. These are generally reported to the client as an HTTP 404 error code.
    Process
    Private Bytes
    The current number of bytes that the process has allocated that cannot be shared with other processes.

    Websphere Application Server

    Measurement
    Description
    MemoryFree
    The amount of free memory remaining in the Java Virtual Machine
    MemoryTotal
    The total memory allocated for the Java Virtual Machine
    MemoryUse
    The total memory in use within the Java Virtual Machine

    DataSource
    Resources related to a specific data source specified by the "name" attribute
    ConnectionCreates
    The number of connections created
    ConnectionDestroys
    The number of connections released
    ConnectionPoolSize
    The average size of the pool, i.e., number of connections
    ConnectionAllocates
    The number of times a connection was allocated
    ConnectionWaiters
    The average number of threads waiting for a connection
    ConnectionWaitTime
    The average time, in seconds, of a connection grant
    ConnectionTime
    The average time, in seconds, that a connection is in use
    ConnectionPercentUsed
    The average percentage of the pool that is in use
    ConnectionPercentMaxed
    The percentage of the time that all connections are in use

    Oracle Database Server

    Measurement
    Description
    CPU used by this session
    This is the amount of CPU time (in 10s of milliseconds) used by a session between the time a user call started and ended.
    Bytes received via SQL*Net from client
    The total number of bytes received from the client over Net8
    Logons current
    The total number of current logons
    Opens of replaced files
    The total number of files that needed to be reopened because they were no longer in the process file cache
    User calls
    Oracle allocates resources (Call State Objects) to keep track of relevant user call data structures every time you log in, parse, or execute. When determining activity, the ratio of user calls to RPI calls gives you an indication of how much internal work gets generated as a result of the type of requests the user is sending to Oracle.
    SQL*Net roundtrips to/from client
    The total number of Net8 messages sent to, and received from, the client
    Bytes sent via SQL*Net to client
    The total number of bytes sent to the client from the foreground process(es)
    Opened cursors current
    The total number of current open cursors
    DB block changes
    Closely related to consistent changes, this statistic counts the total number of changes that were made to all blocks in the SGA that were part of an update or delete operation. These are changes that are generating redo log entries and hence will be permanent changes to the database if the transaction is committed. This statistic is a rough indication of total database work and indicates (possibly on a per-transaction level) the rate at which buffers are being dirtied.
    Total file opens
    The total number of file opens being performed by the instance. Each process needs a number of files (control file, log file, database file) to work against the database

    Resource for Hands-on

    • Mercury Web tours Application
    • Mercury Demo Web Application Readme.doc
    • User’s Guide for VUGen, Controller & Analysis
    • LoadRunner for the Web 8.1 Student Workbook (LR7WEB-BOOK-04a.pdf)
    • Correlation Guide (Correlation.doc)
    • Case Study on Flight Booking System.



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