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Default Parameters for IGELOSMemoryTest
This test reports statistics related to the usage of physical memory of each of the IGEL Endpoints.
This page depicts the default parameters that need to be configured for the IGELOSMemoryTest.
To obtain the ‘inside view’ of performance of the IGEL Endpoints - i.e., to measure the internal performance of the IGEL Endpoints - this test uses a light-weight Endpoint Agent software deployed on each of the IGEL Endpoints. The Endpoint Agents collect performance metrics from the IGEL Endpoints and communicate the metrics to the eG remote agent using TCP protocol. Accordingly, by default, INSIDE VIEW USING parameter is set to TCP.
By default, the detailed diagnosis of the Used physical memory measure of this test reports the number of instances of each process running on the VM, and the aggregated memory usage (in MB and %) of every process across all its instances. For example, if users to a VM are together having 15 instances of Chrome open on the machine at around the same time, then the detailed diagnosis of the Used physical memory measure will compute and display the collective memory usage of all 15 instances against the Application Name, Chrome. From this, you can quickly identify the exact process that is ‘collectively’ (i.e., across its instances) over-utilizing the memory. Sometimes, administrators might want to isolate not just the process, but also similar process arguments that are guilty of abnormal memory consumption. This granular insight will take administrators closer to the root-cause of the memory bottleneck on a desktop. For instance, in the Chrome example above, say 8 of the 15 instances are used to access the same YouTube video, and 7 instances are accessing a shopping site. In such a case, if memory usage is aggregated at the URL-level and not the process-level, then administrators can quickly identify which precise URL is draining memory - the YouTube video? or the shopping site? For this, detailed diagnostics should be grouped by process arguments (eg., URLs) and not just by process/application names. To enable grouping by arguments, set the GROUP PROCESSES WITH ARGUMENTS flag to Yes. By default, this flag is set to No.
By default, MEMORY UTILIZATION IN PERCENT parameter is set to 75 percentage indicating that by default this test will display top-10 memory intensive processes on a VM in the detailed diagnosis of the Physical memory utilized measure only when the memory utilization reaches/exceeds 75 percentage. On the other hand, if the memory utilization is lower than the value specified against this parameter, then, this test displays only topv3 memory intensive processes in the detailed diagnosis of the Physical memory utilized measure so as to conserve storage space on the database. However, this setting can be overridden if required.
The DD FREQUENCY refers to the frequency with which detailed diagnosis measures are to be generated for this test. The default is 1:1. This indicates that, by default, detailed measures will be generated every time this test runs, and also every time the test detects a problem. You can modify this frequency, if you so desire. Also, if you intend to disable the detailed diagnosis capability for this test, you can do so by specifying none against DD FREQUENCY.
When changing default configurations of tests, the values with “$” indicate variables that will be replaced by the eG system according to the specific server being managed - for instance, $hostName is the host/nickname of the target host, $port is the port number of the server being monitored. E.g., for a server xyz:80, $hostName will be changed automatically by the eG manager to “xyz*” and $port will be changed to “80” when configuring a test.
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