Ultra Monkey: Load Balancing Statistics

Ultra Monkey: High Availability and Load Balancing Solution for Linux

Load Balancing Statistics

LVS provides statistics that are useful for examining the performance and troubleshooting problems. These are accessed using arguments to ipvsadm -L -n.

Throughput Statistics

--stats can be used to give you information on the amount of data that has passed through LVS. The following example is for direct routing, thus the outbound packets and bytes are zero.

/sbin/ipvsadm -L -n --stats
IP Virtual Server version 1.0.4 (size=4096)
Prot LocalAddress:Port               Conns   InPkts  OutPkts  InBytes
OutBytes
  -> RemoteAddress:Port
TCP  192.168.6.240:http                591     3332        0   520660 0
  -> 192.168.6.4:http                   26      169        0    24025 0
  -> 192.168.6.5:http                  565     3163        0   496635 0

Rate Statistics

--rate can be used to give you information on the rate at which packets are being processed. Again, the example example is for direct routing, thus the outbound packets and bytes are zero.

/sbin/ipvsadm -L -n --rate
IP Virtual Server version 1.0.4 (size=4096)
Prot LocalAddress:Port                 CPS    InPPS   OutPPS    InBPS OutBPS
  -> RemoteAddress:Port
TCP  192.168.6.240:http                  8       48        0     6877 0
  -> 192.168.6.4:http                    4       24        0     3446 0
  -> 192.168.6.5:http                    4       24        0     3431 0

Resetting Statistics
--zero can be used to reset the statistics counters.
```
/sbin/ipvsadm -L -n --rate
```

Examining the connection table

--connection can be used to dump the connection table. This is useful for debuging.

/sbin/ipvsadm -L -n --connection
IPVS connection entries
pro expire state       source             virtual            destination
TCP 01:58  FIN_WAIT    192.168.6.77:46555 192.168.6.240:80   192.168.6.5:80
TCP 01:58  FIN_WAIT    192.168.6.77:46554 192.168.6.240:80   192.168.6.4:80
TCP 00:26  NONE        192.168.6.77:0     192.168.6.240:0    192.168.6.5:0

Copyright © 2000-2005, Horms
Last Updated: Tue May 17 17:37:25 2005 +0900

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