eG Monitoring
 

Measures reported by LSUserSvcConfTest

Every user in the Microsoft Lync server is assigned a Registrar pool, backup registrar pool and a User Services pool. Administrators may want to determine how well the User Services pool is servicing the requests made to it. The LSUserSvcConfTest test exactly serves this purpose.

This test helps administrators figure out the number of conferences in the pool, the Invite and ACK requests sent and received, the requests that were sent to the MCU server and the responses that failed, the number of conferences that were successful etc. This way administrators can identify the load on the user services pool and identify any notable performance issues befor end users start complaining!

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
ConfCount Indicates the number of conferences scheduled in the user services pool. Number  
SprocConf Indicates the rate at which the users joined the conference through sproc calls. Calls/Sec  
INVITERec Indicates the number of invite requests sent to the Focus component to join the conference. Number The Focus is the conference state server. It is implemented as a SIP user agent that is addressable by using a conference URI. The Focus runs in the User Services module of all Front End Servers. All group IM, multiparty A/V, and data collaboration sessions are managed on the server by the Focus.

The Focus is responsible for the following tasks:

  • Initiating conferences
  • Enlisting required conferencing servers
  • Authenticating participants before allowing them to enter a conference
  • Enforcing the policy that specifies whether the meeting organizer is authorized to invite external users
  • Maintaining SIP signaling relationships between conference participants and conferencing servers
  • Managing conference state
  • Accepting subscription to conferences and notifying users of changes in conference state, such as the arrival and departure of participants and the addition or removal of media
  • Maintaining and enforcing conference policies and rosters

The Focus also enables the organizer to lock a meeting so that no more participants can enter after a certain time.

ACKRec Indicates the number of ACK requests dispatched to the Focus component. Number  
FacFail Indicates the number of requests failed to be sent to the MCU server. Number  
FacCallsTimeout Indicates the number of requests that timed out while waiting for a response from the MCU server. Number  
MCUFail Indicates the number of create conference requests that failed to reach the MCU. Number  
ConfReqTimeout Indicates the number of create conference requests that timed out while waiting for a response from the MCU. Number  
ConfLatency Indicates the average time taken to create a conference call. Secs A low value is desired for this measure.
CallLatency Indicates the average time taken to complete a MCU factory call. Secs  
AllocationLatency Indicates the average time taken to complete a full allocation request. Secs  
ConfReqSucc Indicates the number of add conference requests that were successful. Number A high value is desired for this measure.
MediaReq Indicates the number of requests received for media specific commands. Number  
C3PFailRes Indicates the number of CCCP failure responses that were generated locally. Number Ideally, the value of this measure should be zero.
InConfReq Indicates the number of getconference requests received by this service. Number  
Notifications Indicates the number of notifications for the conferences that are in process. Number