Managing Affinity On C1 | C2 | C2+ Servers; Managing Affinity On C4 | C5 Servers - Telestream Lightspeed Live Capture User Manual

Care should be taken to ensure that a processor group is not assigned more workflows
than it can support. See the Resource Utilization tables later in this chapter for specific
processor and codec capacities.
To determine which processor group a given source has been assigned, in Source
Manager, make sure Advanced Mode is enabled
source to view the processor group assignment (in the Affinity column)—as well as CPU
utilization—in real time:

Managing Affinity on C1 | C2 | C2+ Servers

C1 | C2 | C2+ Lightspeed Live Servers have two separate CPU processor groups. When
enabled, processing associated with each Capture | Tape job is assigned to the assigned
CPU on the server's multi-core CPU to prevent inefficient process mapping across CPU
sockets during heavy loads, typically when several sources are capturing concurrently.
You can manually set affinity to a specific socket for any source type on any model. If
you create IP sources in order and use them in order, balancing is automatic. However,
for example, if you delete every other IP source, the remaining sources do not balance
and you can use this control to balance them. If IP sources are maintained long term, it
may be helpful to assign each source a preferred processor.
For both source types—dynamically created sources (IP sources) and permanent
sources (SDI sources)—it is possible to delete dynamically created sources in a way that
leave the remaining sources unbalanced.
Disabling this option during multi-source capturing may result in excessive CPU usage.
When Preferred Processor is disabled, affinity is set to 0.
On a C2+ Lightspeed Live server, with advanced mode enabled
Settings), you can disable manual affinity completely—disable the Preferred Processor
control in the Configure Source dialog. When you disable Preferred Processor, the Live
Source process will attempt to use both sockets.

Managing Affinity on C4 | C5 Servers

On a C4 or C5 server, you can manually set affinities when required for IP
sources.Processor affinities should be balanced for optimal utilization. Generally, SDI 1 |
3 | 5 | 7 are assigned an affinity value of 1. SDI 2 | 4 | 6 | 8 are assigned affinity 2.
Balancing affinities is generally automated. SDI affinities—set automatically. When you
dynamically create sources, you typically don't need to adjust affinities in order and use
them. However, if you delete alternate IP sources, for example, you may be left with
sources that do not balance.
Affinity for a given source is set zero (0) when Preferred Processor is disabled for the
source.
Lightspeed Live Capture User Guide
Lightspeed Live Server Resource Requirements
Balancing CPU Processor Group Affinities
(Managing System Settings). Select a
(Managing System
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