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URL:
https://askubuntu.com/q/1036893
Title:
how to time a certain part of an executable?
ID:
/2018/05/16/how-to-time-a-certain-part-of-an-executable_
Created:
May 16, 2018
Edited: May 16, 2018
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September 15, 2024
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The easiest way is to put the time command in front of the command you are running. For example:
$ time locate display-auto
/etc/cron.d/display-auto-brightness
/home/rick/Downloads/display-auto-brightness
/home/rick/Pictures/display-auto-brightness conky.png
/home/rick/Pictures/display-auto-brightness systray.png
/home/rick/Pictures/display-auto-brightness-config 1.png
/home/rick/Pictures/ps display-auto-brightness.png
/lib/systemd/system-sleep/display-auto-brightness
/mnt/e/etc/cron.d/display-auto-brightness
/mnt/e/lib/systemd/system-sleep/display-auto-brightness
/mnt/e/usr/local/bin/display-auto-brightness
/usr/local/bin/display-auto-brightness
real 0m0.826s
user 0m0.803s
sys 0m0.016s
We are using the locate command to find all the filenames with display-auto in the names. Simply insert the time command in front of the command.
Getting time for portion of script
You can use the $SECONDS variable inside your script to get the time for a portion of it. For example:
SECONDS=0
/bin/egrep -v "^#|^$" $BLOCKEDIPS_XS | while IFS= read -r ip
do
# Append everything to droplist
$IPTABLES -A droplist -i eth0 -s $ip -j LOG --log-prefix " Drop IP List blockxs "
$IPTABLES -A droplist -i eth0 -s $ip -j DROP
done <"$BLOCKEDIPS_XS"
timer stops, shows elapsed time
BlockTime=$SECONDS
echo "Total time to block IPs: $BlockTime Seconds"
In this code the SECONDS is reset to zero and then obtained after a lengthy process occurs.