linuxgeek: Re: [LINUX_Newbies] Script

Thursday, November 12, 2020

Re: [LINUX_Newbies] Script

hello
is this script ok or dangerous?

does it kill a task or a browser?

Can I type in line by line into a terminal?

Is it fine to limit CPU of all browsers?

Regards Sophie

The following script will limit the CPU usage of all browser processes
to $LIMIT percent CPU. Note that the limit is per process not total over
all processes, so you may want to set it quite low to actually have an
effect.

LIMIT=10 # Hard-code a limit of 10% CPU as an example.

# Kill child processes (stop limiting CPU) on script exit.
for sig in INT QUIT HUP TERM; do
trap "
    pkill -P $$
    trap - $sig EXIT
    kill -s $sig "'"$$"' "$sig"
done
trap cleanup EXIT

# Find and limit all child processes of all browsers.
for name in firefox firefox-esr chromium chrome
do
    for ppid in $(pgrep "$name")
    do
        cpulimit --pid="$ppid" --limit="$LIMIT" &
        for pid in "$ppid" $(pgrep --parent "$ppid")
        do
            cpulimit --pid="$pid" --limit="$LIMIT" &
        done
    done
done