I have a Cisco 4506/Sup V with approx. 30 VLANs all with HSRP virtual interfaces using rapid spanning tree. S/W revision is 12.2
Pinging the local HSRP interface in a VLAN from a PC with 500ms delays between each ping has good latency response, average is <2ms (over 30000 pings). However the max ping can sometimes be up to 3-500ms RTT.
Should this be expected? I've done a 'show proc cpu' and CPU usage seems fine. Also a 'show platform health' and from what I can tell the values seem reasonable. There are no ACLs used, basic QoS is implemented (expedite TX-queue 3).