Kofax Communication Server 9.1.1 - Manual (Page 46)

Environment Guide Version 3.00.04
46 © Copyright Kofax, Inc. All information is subject to change without notice.
5.4.3 Checking Network Latency
In order to verify whether there are any network bottlenecks the easiest way is to observe so called round-
trip-time (RTT) values between particular nodes communicating through the network (note that the primary-
secondary network latency is observed by the dedicated remote disk network delay counter).
The RTT counter is the time that elapses between sending a data request from one node to the other and
receiving a data response back in the sending node.
TCOSS provides following Windows performance counters to observe the network communication
between:
1. TCOSS and LS1 servers and/or TC/FoIP servers:
TCOSS Links\Avg. Packet-Ack Time ms
TCOSS Links\Peak Packet-Ack Time ms
The counters indicate basically network round-trip-time between the TCOSS and LS1 or TC/FoIP
servers. However, the value may include and additional delay of 0 … 300ms that may have occurred
during handling of the packet on the responding node.
2. TCOSS storage and media servers:
TCOSS Links\Avg. Round Trip Time ms
TCOSS Links\Peak Round Trip Time ms
The counters indicate the real network round-trip-time between the storage and connected media
servers (do not include any delay on the media server)
For the detailed description of these counters, please refer to the TCOSS System Manual.
Select TCOSS Links counters to add them in the Windows performance monitor (in the example below we
want to observer 2 LS1 servers connected as nodes L.10 and L.20: