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Foglight Experience Monitor 5.8.1 - Metric Reference Guide

Foglight Experience Monitor metric categories
General metric categories Application-oriented categories Service-oriented categories Web services category Content-oriented categories Infrastructure-oriented categories Types of metrics How standard metrics are calculated End-User Access Speed Network Latency Instrumented metric: Load Time Time frames in which metrics are viewed
Metric definitions
Non-system category metrics
Access Speed Access Speed Distribution Alarm Application Time Cipher Suite Not Found City Clicks per Session Client IP Command Byte Volume - Server Command Byte Volume - User Command Client Time Command Completion Time Command Count Command Data Size - Server Command Data Size - User Command Initial Response Time Command Initial Response Time Distribution Command Network Latency Command Processing Time Command Processing Time Percentile Command Processing Time Service Level Command Timeout Count Component List Size Connection Closed Count Connection Count Connection Duration Connection Established Count Connection Open Wait Count Connection Reset Count Connection Timeout Count Duration End-to-End Time for Dialup Users (0-56k) End-to-End Time for ISDN Users (56k-128k) End-to-End Time for Low-End Broadband Users (128k-384k) End-to-End Time for High-End Broadband Users (384k-728k) End-to-End Time for T1/Lan Users (> 728k) End-to-End Time Service Level Error Count (HTTP 4xx Client Errors) Error Count (HTTP 5xx Server Errors) Fault Actor Fault Code Fault Detail Fault String Fault Subcodes Field Out of Range Hit Count Hit End-To-End Time Hit Redirect Ratio Hit Size Incomplete SSL Key Invalid SSL Content Invalid SSL Handshake Type Invalid SSL Key Invalid SSL Record Length Invalid SSL State Invalid SSL Version Number IP Packet Byte Volume - Server IP Packet Byte Volume - User IP Packet Count - Server IP Packet Count - User IP Packet Size - Server IP Packet Size - User ISP Load Time Load Time Percentile Login Name Missing Reusable Secret Missing SSL Key Other Requests Page Access Speed Distribution Page Client Time Page Connection Count Page Download Attempts Page Download Size Page Element Count Page End-to-End Time Page End-To-End Time Distribution Page End-To-End Time Percentile Page Exit Count Page Network Latency Page Peak Count per Second Page Processing Time Page Processing Time Distribution Page Processing Time Percentile Page Redirect Ratio Page Stop Count Page Stop Rate Page Stop Time Page Think Time Page Timeout Count Page Views Path Count Path Duration Path End-To-End Time Path End-to-End Time Percentile Processing Load Percentage Processing Time Service Level Referrer Request Code Count Response Code Count Service Abort Count Service Client Time Service Count Service Duration Service End-to-End Time Service End-to-End Time Distribution Service End-to-End Time Percentile Service Network Latency Service Peak Count per Second Service Processing Load Percentage Service Processing Time Service Processing Time Distribution Service Processing Time Percentile Service Processing Time Service Level Service Request Count per Second Service Started Count Service Think Time Service Timeout Count Session Count Session Key Site Stickiness SOAP Operation Client Time SOAP Operation Completion Time SOAP Operation Completion Time Distribution SOAP Operation Consumer Overhead Ratio SOAP Operation Count SOAP Operation End-To-End Time SOAP Operation End-to-End Time Distribution SOAP Operation End-to-End Time Percentile SOAP Operation Failure Count SOAP Operation Initial Response Time SOAP Operation Network Latency SOAP Operation Peak Count per Second SOAP Operation Processing Time SOAP Operation Processing Time Distribution SOAP Operation Processing Time Percentile SOAP Operation Provider Overhead Ratio SOAP Operation Success Count SOAP Operation Success Ratio SOAP Operation Think Time SOAP Operation Timeout Count SOAP Transaction Abort Count SOAP Transaction Client Time SOAP Transaction Completion Time SOAP Transaction Completion Time Distribution SOAP Transaction Count SOAP Transaction Duration SOAP Transaction End-to-End Time SOAP Transaction End-to-End Time Distribution SOAP Transaction End-to-End Time Percentile SOAP Transaction Initial Response Time SOAP Transaction Network Latency SOAP Transaction Peak Count per Second SOAP Transaction Processing Time SOAP Transaction Processing Time Distribution SOAP Transaction Processing Time Percentile SOAP Transaction Processing Time Service Level SOAP Transaction Request Peak Count per Second SOAP Transaction Think Time SOAP Transaction Timeout Count SSL Memory Error Step Started Count Step Completion Count Step Abort Count Step Timeout Count Subnet Success Ratio Success Ratio (with Client Errors) Success Ratio (with Server Errors) TCP Command Client Time TCP Command Completion Time TCP Command Count TCP Command Initial Response Time TCP Command Initial Response Time Percentile TCP Command Network Latency TCP Command Processing Time TCP Connection Open Peak Count per Second TCP Queue Size TCP Control Segment Byte Volume - Client TCP Control Segment Byte Volume - Server TCP Control Segment Count - Client TCP Control Segment Count - Server TCP Control Segment Size - Client TCP Control Segment Size - Server TCP Data Segment Byte Volume - Client TCP Data Segment Byte Volume - Server TCP Data Segment Count - Client TCP Data Segment Count - Server TCP Data Segment Size - Client TCP Data Segment Size - Server TCP Duplicate Resend Segment Byte Volume - Client TCP Duplicate Resend Segment Byte Volume - Server TCP Duplicate Resend Segment Count - Client TCP Duplicate Resend Segment Count - Server TCP Duplicate Resend Segment Size - Client TCP Duplicate Resend Segment Size - Server TCP Fragmented Segment Byte Volume - Client TCP Fragmented Segment Byte Volume - Server TCP Fragmented Segment Size - Client TCP Fragmented Segment Size - Server TCP Fragmented Segment Count - Client TCP Fragmented Segment Count - Server TCP Invalid Checksum Segment Byte Volume - Client TCP Invalid Checksum Segment Byte Volume - Server TCP Invalid Checksum Segment Size - Client TCP Invalid Checksum Segment Size - Server TCP Invalid Checksum Segment Count - Client TCP Invalid Checksum Segment Count - Server TCP Payload Byte Volume - Client TCP Payload Byte Volume - Server TCP Resend Segment Byte Volume - Client TCP Resend Segment Byte Volume - Server TCP Resend Segment Count - Client TCP Resend Segment Count - Server TCP Resend Segment Size - Client TCP Resend Segment Size - Server TCP Segment Byte Volume - Client TCP Segment Byte Volume - Server TCP Segment Count - Client TCP Segment Count - Server TCP Segment Size - Client TCP Segment Size - Server TCP Timeout Count - Syn TCP Timeout Count - Idle TCP Timeout Count - Half Open TCP Urgent Segment Byte Volume - Client TCP Urgent Segment Byte Volume - Server TCP Urgent Segment Count - Client TCP Urgent Segment Count - Server TCP Urgent Segment Size - Client TCP Urgent Segment Size - Server Unexpected Client Hello Message Unexpected Server Hello Message Unknown Key Exchange Unload Time Unload Time Percentile User Agent User Count User Stickiness
System category metrics
Agent Memory Consumption Warnings Agent Restarts Baseline Partition Size Backup Errors Checksum Errors Client Segments Count Client Segments Missing Client Segments Missing Rate Communication Errors Connection Errors Connections Started Connections Dropped CPU1 Temperature CPU2 Temperature CPU Core 1 Utilization CPU Core 2 Utilization CPU Core 3 Utilization CPU Core 4 Utilization CPU Core 5 Utilization CPU Core 6 Utilization CPU Core 7 Utilization CPU Core 8 Utilization CPU Utilization Database Load Errors Database Load Time Database Partition Usage Database Records Loaded Datastore Inode Usage Datastore Partition Usage Day Partition Size Excessive Data Volume FxV Bytes Transmitted FxV Discards FxV Hits Transmitted Hour Partition Size Log Partition Usage Memory Consumption Warnings Memory Utilization Metric Table Entries Metric Table Size Minute Partition Size Monthly Partition Size OS Partition Usage Packet Drop Rate Packet Errors Packet Errors - Port 1 Packet Errors - Port 2 Packet Errors - Port 3 Packet Errors - Port 4 Packet Errors - Port 5 Packet Errors - Port 6 Packet Errors - Port 7 Packet Errors - Port 8 Packets Captured Packets Captured – Port 1 Packets Captured – Port 2 Packets Captured – Port 3 Packets Captured – Port 4 Packets Captured – Port 5 Packets Captured – Port 6 Packets Captured – Port 7 Packets Captured – Port 8 Packets Dropped Packets Dropped – Port 1 Packets Dropped – Port 2 Packets Dropped – Port 3 Packets Dropped – Port 4 Packets Dropped – Port 5 Packets Dropped – Port 6 Packets Dropped – Port 7 Packets Dropped – Port 8 Packets Processed Packets Processed – Port 1 Packets Processed – Port 2 Packets Processed – Port 3 Packets Processed – Port 4 Packets Processed – Port 5 Packets Processed – Port 6 Packets Processed – Port 7 Packets Processed – Port 8 RAID Array Degraded Relation Table Entries Relation Table Size Resource Table Entries Resource Table Size SiteMinder Errors Server Segments Count Server Segments Missing Server Segments Missing Rate SOAP Error Rate SOAP Errors SOAP Message Count SOAP XML Errors SSL Connection Errors SSL Connections Released SSL Connections Started SSL Connection Error Rate Swap Partition Usage System Temperature Tmp Partition Usage Total Table Size Value Count Table Entries Value Count Table Size Weekly Partition Size

Page Processing Time Distribution

Application Component, Application Component by City, Application Component by Country, Application Component by ISP, Application Component by Region, Application Component by Subnet

Distribution Metric

PageProcessingTimeDist

This metric provides a distribution of Page Processing Times. Distribution buckets and ranges are configurable. For more information see Distribution metric.

When a page is delivered by the monitored application its processing time is saved in one of the buckets of this distribution.

Page Processing Time

Page Processing Time Percentile

Application Component, Application Component by City, Application Component by Country, Application Component by ISP, Application Component by Region, Application Component by Server, Application Component by Subnet, City, Country, Enterprise, HTTP Protocol, ISP, Page, Region, Service Step, Service Step by City, Service Step by Country, Service Step by ISP, Service Step by Region, Service Step by Subnet, Site, Subnet, User Agent, User Session

Standard Metric

PageProcessingTimePerc

Percentile metrics provide a means to quantify the quality of service customers are receiving based on the response time that a fixed percentage (usually 95 percent) of users receive. These metrics are commonly referred to as 95th Percentile metrics. The exact percentage the system uses is configurable by the user.

This method has the advantage over relying on the arithmetic mean in that it excludes outliers which can distort the mean.

This metric provides a numeric value that represents the upper level of Page Processing Time achieved by the desired percentage.

To calculate this metric, the system uses a statistical method involving standard deviation rather than tracking each individual event in memory (that approach would be prohibitive in terms of processing requirements and memory consumption).

The percentile metric is calculated using this formula:

where z = standard normal variable corresponding to the desired percentile (usually 95th).

Page Redirect Ratio

Application Component, Application Component by City, Application Component by Country, Application Component by ISP, Application Component by Region, Application Component by Server, Application Component by Subnet, City, Country, Enterprise, HTTP Protocol, ISP, Page, Region, Service Step, Service Step by City, Service Step by Country, Service Step by ISP, Service Step by Region, Service Step by Subnet, Site, Subnet, User Agent, User Session

Percentage Metric

PageRedirectRatio

This metric shows the percentage of hits that are redirected. When a page is requested, one or more hits are requested from the web server. Each requested element could result in the generation of an HTTP redirection response code (3xx).

When a request results in a redirect, the resource is not downloaded. Instead the server usually transmits a new URL with the redirected location of the resource or inform the browser that the resource has not changed since it was last requested. In this latter case, the browser knows it can use a local copy of the requested resource from its cache.

For example, consider a page that consists of 10 elements. When the user browses to this page, 10 separate requests must be made, one for each element. The first 9 elements of the page return an OK status message and download the entire contents of the requested resource. The response for the 10th element returns an 'Object Not Modified' message and no other data is downloaded for the resource. For this page, the page redirect ratio would be 10 percent since only 10 percent of the requested elements within the page resulted in a redirection.

Page Stop Count

Table 91. Page Stop Count

Application Component, Application Component by City, Application Component by Country, Application Component by ISP, Application Component by Region, Application Component by Server, Application Component by Subnet, City, Country, Enterprise, Hit, HTTP Protocol, ISP, Page, Region, Server, Service Step, Service Step by City, Service Step by Country, Service Step by ISP, Service Step by Region, Service Step by Subnet, Site, Subnet, User Agent, User Session

Count Metric

PageStopCount

This metric shows how often a page is halted by the user before the page is completely downloaded. Users halt the page download by clicking the Stop button on their web browser or by closing the browser. Users sometimes stop pages that are taking too long to download. The page that is stopped is uniquely identified by the URL for the primary component in the page download.

Page stops are identified when one or more TCP reset commands are sent before all of the page components in the requested page are downloaded. When a page stop is identified, the page stop count is incrementally increased.

The system does not count every reset as a page stop. Only TCP resets that are sent before all of the page’s content is downloaded are considered part of a page stop. TCP resets that are sent after all of the content has been downloaded are not counted as a page stop indicator. TCP resets are often used to close unwanted connections and do not indicate a page stop. The analysis engine take these differences in TCP resets into account.

Newer browsers do not always send TCP reset commands when the user hits the Stop button. Therefore, this metric does not reliably reflect all page stops that may be occurring on your site.

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