TIBCO LogLogic LMI - explanation of message drops as shown in 'watchqueue' p.2

TIBCO LogLogic LMI - explanation of message drops as shown in 'watchqueue' p.2

book

Article ID: KB0072063

calendar_today

Updated On:

Products

TIBCO LogLogic Enterprise Virtual Appliance

Description

TIBCO LogLogic administrators could wonder where the system collects and aggregate the metrics for message dropped and which level are the drops happening. We can find this metrics in the CLI's 'watchqueue' page 2. 

Issue/Introduction

This article explains the message drops in 'watchqueue' page 2

Environment

RHEL

Resolution

The 'watchqueue' page 2 shows a line (in the middle) like:  
 

Packet Drops:  MAC Drops : 0(0.00/s)  IP Drops : 0(0.00/s)  UDP Drops : 4529866(0.00/s)
 
The MAC drops - occurs on the Network Interface Card and can be shown by bellow command:
 

Logapp root:~ 0$ /usr/sbin/ethtool -S eth0 2>/dev/null | grep rx_dropped | awk '{print $2}'
Logapp root:~ 0$

 
The IP drops occurs on the OS level and can be displayed with following command:
 

Logapp root:~ 0$ netstat -s -w | grep 'incoming packets discarded'
    0 incoming packets discarded

 
Finally, the UDP drops occurs on application level and can be showed with below command:
 

Logapp root:~ 0$ cat /proc/net/snmp | grep Udp | grep -v InErrors | awk '{print $4}' | head -1
4529866