by Andrew Brampton 2009-2012
https://github.com/bramp/handy-tools
./persec.py [--interval=<n>] <command>
Runs a command at a set interval, and then displays numerical difference between refreshes. For example, persec.py ifconfig will display the standard ifconfig, with the bytes and packets numbers displayed in per second values.
wlan0 Link encap:Ethernet HWaddr xx:xx:xx:xx:xx:xx
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:539/s errors:0 dropped:0 overruns:0 frame:0
TX packets:517/s errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:104971/s (0.10/s MB) TX bytes:62267/s (0.06/s MB)
cat something | ./hist.py
Reads a sequence of numbers from stdin, and produces a pretty histogram as well as various statistics such as the mean, median, 95th percentile.
<= distibution count
1.92 ************************************************************************ 20
2.17 ****************** 5
2.42 ************** 4
2.67 *** 1
2.92 0
3.17 ********** 3
3.43 ******* 2
3.68 ******************************** 9
3.93 ************************************************** 14
4.18 **************************************************************** 18
4.43 ******************************************* 12
4.68 ****************************************************** 15
4.93 ************** 4
# N: 107, min: 1.67, max: 4.93, mean: 3.4557, var: 12.6348
# median: 3.8, 90%: 4.6, 95%: 4.63, 99%: 4.83
Copyright (c) 2009-2012, Andrew Brampton All rights reserved.
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