Troubleshooting Qos; Troubleshooting Memory And Processor Use For Egress Queue Rate Statistics; Chapter 32 Troubleshooting Qos; And Events - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - QUALITY OF SERVICE CONFIGURATION GUIDE 2010-09-22 Configuration Manual

CHAPTER 32

Troubleshooting QoS

Troubleshooting Memory and Processor Use for Egress Queue Rate Statistics and
Events
Problem
Solution
Related
Documentation
Copyright © 2010, Juniper Networks, Inc.
This chapter provides information for troubleshooting QoS.
QoS topics are discussed in the following sections:
Troubleshooting Memory and Processor Use for Egress Queue Rate Statistics and
Events on page 337
The E Series Broadband Services Routers uses shared processing and memory when it
gathers egress queue rate statistics and events. If sufficient memory is not available, the
statistics gathering is temporarily disabled and the queues are considered to be in failover
mode until memory becomes available.
The router displays a CLI message whenever queues are put into failover mode and when
they recover from failover mode.
NOTE: When an extremely large number of statistics is being gathered over
a short period of time, the router might release the processor to perform more
important tasks. This can result in longer rate periods than you have
configured. For example, if you configured 10,000 queues to gather statistics
every second on a line module, the router might actually lengthen the rate
to 2 seconds or more.
To display the number of queues that are disabled because of no resources, issue the
show egress-queue rates command.
Monitoring Forwarding and Drop Rates on the Egress Queue on page 314
show egress-queue rates
337