Setting minimum guaranteed bandwidth with 8 queues
When 10 Mbps ports on a switch are configured in QoS for eight outbound queues (the default), and the guaranteed minimum bandwidth is set for 5 Mbps or less for a given queue, then packets in the lower-priority queues may be discarded on ports that are oversubscribed for extended periods of time. If the oversubscription cannot be corrected, HPE recommends reconfiguring the switch to operate with four outbound queues. The command to do this is:
switch(config)# qos queue-config 4-queues