System performance enhancements for rpd, Packet Forwarding Engine, and kernel

Performance of the routing protocol process (rpd), the Packet Forwarding Engine, and the kernel is enhanced to speed up the process with which the rpd learns the route states and changes, and reflects these changes in the ASIC-based Packet Forwarding Engine residing in the line cards. The key enhancements are faster route download rates when a router comes up after a reboot, or when you add a new line card, and faster update of the data plane in convergence scenarios. We recommend disabling daemons, such as Layer 2 address learning process (l2ald) and connectivity-fault management process (cfmd) -if they are not required- to improve system performance. 

To maximize route download performance, increase the priority of the route-install job in the krt module of rpd. To increase the route-install job priority, configure the dynamic-route-install-job-priority statement at the [edit routing-options forwarding-table] hierarchy level. The dynamic-route-install-job-priority option is disabled by default. You can also specify the threshold-length and the recover-length. 

• threshold-length-The priority of a job in the krt-queue is increased when the number of entries in the krt-queue exceeds this value. By default, the threshold-length is 50000. 
• recover-length-The priority of a job in the krt-queue is restored to the default priority when the number of entries in the krt-queue falls below this value. By default, the recover length is 45000. 

The dynamic-route-install-job-priority configuration option is available. Configuring the dynamic-route-install-job-priority option might not be required in future software releases because of system changes.