Latency#

Transaction Processing#

Purpose#

Transactions should not be run by nodes over a high latency network, if possible.

Procedure#

  1. Log in on any unified node (multinode unified topology) / application node (modular cluster topology).

  2. Run the following for all the other nodes:

    diag ping <IP>

  3. If any of the average round trip time is higher than 10ms, it is recommended that the nodes in the secondary DC should have voss workers set to 0 on version 11.5.3 and later, or the command app stop voss-queue is run on older versions.

Note

For software versions pre 11.5.3, the app stop voss-queue command needs to be run after every service restart or server reboot.

UC Apps Latency#

Purpose#

Latency between unified nodes and UC apps impacts overall provisioning times against the UC apps. This check is done as part of diagnosis of provisioning performance problems.

Procedure#

For each data center:

  1. Log in on any unified node (multinode unified topology) / application node (modular cluster topology).

  2. Run the following for all the UC apps under investigation:

    diag ping <IP>

  3. Record the output and share results with VOSS L2.