deliverytimes.pl - MRTG
script to display average mail delivery delay.
v.1.0 - 10/19/2003
Overview
This script
will display an average of the mail delivery delay for messages
disposed of within the last X minutes, where X is your MRTG interval.
It will give you an average delivery delay for non-spam, and another
for spam. The average is displayed in seconds.
Operation:
- Determine
the Message IDs of all messages with "Stat=Sent" in
the log for the given interval. This indicates the message has
been disposed of.
- Look back
to see when each Message ID was received and compute the distance
in seconds.
- If a MailScanner
log line is found for the Message ID that indicates the message
was Spam, it is recorded as such. Otherwise it is "non
spam".
- Average
delay for Spam and non-spam outputted.
Note:
This was written for Sendmail style logs. If a postfix user wants
to send me some sample log lines, I'll include support...
Downloading
The perl script
can be found here. Refer to the next section for configuration information.
Implementation
Modify the interval
line in the deiverytimes.pl file if you're not on a 5 minute interval
with MRTG.
$IntMins = "5";
# Set this to your MRTG interval
Place the deliverytimes.pl
file wherever you like to keep your MRTG scripts. Add a similar
entry to your mrtg.cfg file:
# Mail Delivery
Times
Target[delivery]: `/usr/local/mrtg-2/bin/deliverytimes.pl`
Title[delivery]: Mail Delivery Time
PageTop[delivery]: <H1>Mail Delivery Time</H1>
XSize[delivery]: 360
YSize[delivery]: 75
Kilo[delivery]: 60
kMG[delivery]: s,m,hr
MaxBytes[delivery]: 100000
YLegend[delivery]: Time
ShortLegend[delivery]:
Options[delivery]: growright,nopercent,gauge
Legend1[delivery]: Non-Spam Delivery Time
Legend2[delivery]: Spam Delivery Time
LegendI[delivery]: Non-Spam Delivery Time
LegendO[delivery]: Spam Delivery Time
Colours[delivery]: DKBLUE#61A0DF,DKBLUE#0000DD,BLUE#003366,BLUE#000044
Sample
Graphs
Here are some
sample graphs. (Take note of the big drop in delivery time on Tuesday
morning. This was a result of an upgrade from Spam Assassin 2.55
to 2.60-1. Pretty obvious performance improvement!!)
`Daily' Graph (5 Minute Average)
| Max
Non-Spam Delivery Time |
181.0
s time |
|
Average
Non-Spam Delivery Time |
5.0
s time |
|
Current
Non-Spam Delivery Time |
1.0
s time |
| Max
Spam Delivery Time |
18.0
s time |
|
Average
Spam Delivery Time |
4.0
s time |
|
Current
Spam Delivery Time |
2.0
s time |
`Weekly' Graph (30 Minute Average)
| Max
Non-Spam Delivery Time |
54.0
s time |
|
Average
Non-Spam Delivery Time |
7.0
s time |
|
Current
Non-Spam Delivery Time |
3.0
s time |
| Max
Spam Delivery Time |
26.0
s time |
|
Average
Spam Delivery Time |
8.0
s time |
|
Current
Spam Delivery Time |
5.0
s time |
Feedback
/ Questions
If you find
this script useful, please let us know. Also, if you have any suggestions
on modification for non-Sendmail systems, they would be welcome
too.
E-Mail: contact@csma.biz.
|
