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The OS/Subsystem panel displays information about the amount of CPU being used by all processes. It also indicates the amount of System Memory and System Disk being used, and reports on any errors. This panel includes:
CPU Usage
Indicates the amount of CPU used by all processes on the monitored server.
System Disk
Indicates the percentage of system disk space being used, showing the amount of used space and the amount of free space.
Top CPU Consumer
Indicates the top consumer of processing resources.
Top Memory Consumer
Indicates the top consumer of memory.
System Memory
Indicates the amount of system memory that is used by all processes on the monitored server.
Ping Time
Indicates the amount of time it takes the computer running the diagnostic console to ping the target server.
Network Output Queue
Shows the number of packets waiting to be sent from the target server. The network output queue can help alert you to problems the server is experiencing with network connectivity.
Theoretical Bandwidth
Indicates the level of network traffic graphed against a "theoretical" maximum bandwidth. The maximum bandwidth is calculated by totaling the capacity of all network devices reported by the operating system. If you are running on an Ethernet network, the actual maximum is approximately 50% of the theoretical bandwidth because of the methods involved in sending data. Having the actual bandwidth equal the theoretical bandwidth is only possible using full duplex Ethernet. Token passing network topologies, such as Token ring and FDDI, enable a theoretical maximum bandwidth much closer to the actual bandwidth.
The Lync/Skype Diagnostic Console contains the following message flows that show the amount of information being sent to various components in your Lync/Skype environment.
UCWA App Req Rec/Sec
Shows the number of UCWA application creation requests received per second.
Web Push Notification Req/Sec
The per second rate of sent push notifications by the MCX mobility service.
SIP Msgs In/Sec
Shows the per-second rate of the incoming messages on the SIP protocol processing layer of the server.
SIP Msgs Out/Sec
Shows the per-second rate of the outgoing messages on the SIP protocol processing layer of the server.
Bytes Sent/Sec (between Connections and OS/Subsystem)
Shows the number of bytes sent from the ASMCU service and the application sharing transport (per second).
Bytes Received/Sec(between Connections and OS/Subsystem)
Shows the number of bytes received by the ASMCU service and the application sharing transport (per second).
DB Query / Sec
Indicates the number of Address Book database queries per second.
HTTP Proxy Req / Sec
Shows the number of HTTP proxy requests per second.
Req Drop / Sec
Indicates the number of incoming requests dropped (per second) because they could not be processed (due to insufficient routing information, bad headers, server resource allocation failure, and so on).
Resp Drop / Sec
Indicates the number of incoming responses dropped (per second) because they could not be processed (due to insufficient routing information, bad headers, server resource allocation failure, and so on).
Bytes Read/Sec(between Server Health and OS/Subsystem)
Shows the rate at which data is being read from the disk, network, and device subsystems of the Windows server that is hosting the server. The data is read primarily from the disk subsystem.
Bytes Written/Sec(between Server Health and OS/Subsystem)
Shows the rate at which data is being written to the disk, network, and device subsystems of the Windows server that is hosting the server. The data is written primarily to the disk subsystem.
Each drilldown page contains displays that provide you with specific information about the components of your system. Drilldowns mainly use two different types of displays – tables and charts. Drilldowns have the following features:
AD
Shows the status of the Active Directory servers available to the Lync Server 2013 or the Skype for Business 2015 server including:
DNS
Shows the status of the DNS (Domain Name System) servers used by this the Lync Server 2013 or the Skype for Business 2015 server including:
Connections
Shows the number of active connections for conferences, calls, and chat rooms:
Mobile Clients
Shows detailed information for mobile clients including:
AB Health State
Shows graphs that contain the following information:
AB Processing Time
Web Req Queue
You can drill down to see requests awaiting completion - The total number of requests currently being processed by application.
Lync/Skype Services
If you drilldown on the Lync/Skype Services spinner, you can view the key services status, memory consumption, and CPU consumption for the following server roles:
You can see the status of the services on each server. If one or more of the required services are not running, the server will set an alarm.
IIS Services
Shows the detailed information about individual IIS services, such as the World Wide Web Publishing Server. You can view each service status, memory consumption, and CPU consumption.
MCU Health State
Individual graphs show the current health of the different types of conferences:
CMS Replication
Indicates if the current status of the Central Management Store (CMS) replication for this server is up to date by showing the following details:
Database Queue Latency (ms)
In the drilldown you can see that database latency is determined by the following values:
OS/Subsystem
Individual graphs provide information about:
Shows all the processes on the server and how much CPU that each process is using, how much physical memory (MB) that each process is using, and the amount of virtual memory allocated to each process.
Represents the number of packets that are waiting to be sent through the network from the target server. Graphs are provided that show:
Shows details about the amount of kilobytes sent (per second), kilobytes received (per second), and the total number of kilobytes processed (per second).
A metric is an individual piece of information that UC Diagnostics has collected about the performance of a system, such as perfmon counters. The information may be a numeric value (a number or percentage), a string of text, or some other piece of data.
Each time the UC Diagnostics window is refreshed, UC Diagnostics retrieves the latest value of the metric, which can be displayed in a drilldown or on the home page.
The Metric editor allows you to view and edit the properties of UC Diagnostics metrics, including their thresholds and severities. You can open the Metric editor for a component or a drilldown by right-clicking on the component and choosing Metrics from the invoked shortcut menu.
When you open the Metric editor, the General tab is open by default. Several metrics contain data source descriptions for the metric. The data source descriptions use the following list of functions.
max(x)
the maximum of a set of values in list x
max(x,y)
the maximum of x and y
min(x)
the minimum of a set of values in list x
count(x)
the number of values in list x
sum(x)
the sum of a set of values in list x
if(x,y,z)
if x is true, then return y, otherwise, return z
snull(x)
if x could not be collected, then return true
avg(x)
the average of values in list x
The perfmon counter is visible in the Metric help section in the General tab.
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