diff options
Diffstat (limited to 'qa/pconf/network/tcp_dropped_conns')
| -rw-r--r-- | qa/pconf/network/tcp_dropped_conns | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/qa/pconf/network/tcp_dropped_conns b/qa/pconf/network/tcp_dropped_conns new file mode 100644 index 0000000..4b03184 --- /dev/null +++ b/qa/pconf/network/tcp_dropped_conns @@ -0,0 +1,42 @@ +#pmieconf-rules 1 +# + +rule network.tcp_dropped_conns + default = "$rule$" + predicate = +"some_host ( + ( 100 * ( network.tcp.drops $hosts$ + + network.tcp.conndrops $hosts$ + + network.tcp.timeoutdrop $hosts$ ) / + network.tcp.connects $hosts$ ) > $threshold$ && + network.tcp.connects $hosts$ > 20 count/minute +)" + enabled = no + version = 1 + help = +"There is some TCP connection activity (at least 20 connections +per minute) and the average ratio of TCP dropped connections to +successful connections exceeds threshold percent during the last +sample interval. +High drop rates indicate either network congestion (check the packet +retransmission rate) or an application like a Web browser that is +prone to terminating TCP connections prematurely, perhaps due to +sluggish response or user impatience."; + +string rule + default = "high number of dropped TCP connections" + modify = no + display = no; + +percent threshold + default = 20 + help = +"Maximum acceptable percentage of dropped TCP connections per new +TCP connection, in the range 0 (not expecting any connections to be +dropped) to 100 (expect most connections to be dropped)."; + +string action_expand + default = "%v%@%h" + display = no + modify = no; + |