Comments on: Tips and tricks: How do I capture the output of “top” to a file? http://www.redhatmagazine.com/2008/04/16/tips-and-tricks-how-do-i-capture-the-output-of-top-to-a-file/ Red Hat Magazine Thu, 24 Jul 2008 16:06:19 +0000 http://lyceum.ibiblio.org/?v=1.0.2 by: vikas sharma http://www.redhatmagazine.com/2008/04/16/tips-and-tricks-how-do-i-capture-the-output-of-top-to-a-file/#comment-81905 Fri, 09 May 2008 13:31:02 +0000 http://www.redhatmagazine.com/2008/04/16/tips-and-tricks-how-do-i-capture-the-output-of-top-to-a-file/#comment-81905 This command is similar to ps command give ps -el > /usr/process.txt This command is similar to ps command
give ps -el > /usr/process.txt

]]> by: mesrik http://www.redhatmagazine.com/2008/04/16/tips-and-tricks-how-do-i-capture-the-output-of-top-to-a-file/#comment-71294 Sat, 26 Apr 2008 05:06:54 +0000 http://www.redhatmagazine.com/2008/04/16/tips-and-tricks-how-do-i-capture-the-output-of-top-to-a-file/#comment-71294 Just to point out that you certainly can use pipes too. Here's snippet from my quick radiusguard script that makes sure radiusd stays running and does not take more than 20% of the cpu. ... runlevel=$(who -r | sed 's/.*run-level *\([3-5]\) .*$/\1/') if [ $(chkconfig --list radiusd | grep -c "$runlevel:on") -eq 1 ]; then # get radiusd cpu usage CPU_USAGE=$(top -b -n 1 |\ awk '/^[0-9]+ radiusd/ { cpu = $9 } END { printf("%i\n", length(cpu) == 0 ? -1 : cpu); }') export CPU_USAGE echo "$CPU_USAGE" >/var/tmp/radiusguard.last if [ $CPU_USAGE -eq -1 ]; then act 'service radiusd stop ; service radiusd start' else if [ $CPU_USAGE -ge 20 ]; then act 'service radiusd restart' fi fi fi act is a function that sends email on event including outputs of the commands run. Runlevel is checked against chkconfig so that it won't run berzerk when startup script is intentionally disabled or similar situations. Needed that script before last upgrade with radius, it just was occationally acting a cpu hog or died mysterioysly. Cpu hogging was really bad, it rendered the LDAP service in the same host unuseable. Cheers, :-) riku Just to point out that you certainly can use pipes too.

Here’s snippet from my quick radiusguard script that makes sure radiusd stays running and does not take more than 20% of the cpu.

…
runlevel=$(who -r | sed ’s/.*run-level *\([3-5]\) .*$/\1/’)

if [ $(chkconfig –list radiusd | grep -c “$runlevel:on”) -eq 1 ]; then
# get radiusd cpu usage
CPU_USAGE=$(top -b -n 1 |\
awk ‘/^[0-9]+ radiusd/ { cpu = $9 }
END { printf(”%i\n”, length(cpu) == 0 ? -1 : cpu); }’)
export CPU_USAGE
echo “$CPU_USAGE” >/var/tmp/radiusguard.last
if [ $CPU_USAGE -eq -1 ]; then
act ’service radiusd stop ; service radiusd start’
else
if [ $CPU_USAGE -ge 20 ]; then
act ’service radiusd restart’
fi
fi
fi

act is a function that sends email on event including outputs of the commands run. Runlevel is checked against chkconfig so that it won’t run berzerk when startup script is intentionally disabled or similar situations.

Needed that script before last upgrade with radius, it just was occationally acting a cpu hog or died mysterioysly. Cpu hogging was really bad, it rendered the LDAP service in the same host unuseable.

Cheers,

:-) riku

]]> by: Saida do Top para um arquivo « Tecnologia Livre! http://www.redhatmagazine.com/2008/04/16/tips-and-tricks-how-do-i-capture-the-output-of-top-to-a-file/#comment-69299 Tue, 22 Apr 2008 00:11:22 +0000 http://www.redhatmagazine.com/2008/04/16/tips-and-tricks-how-do-i-capture-the-output-of-top-to-a-file/#comment-69299 [...] Fonte: Red Hat Magazine [...] […] Fonte: Red Hat Magazine […]

]]> by: Jim Campbell http://www.redhatmagazine.com/2008/04/16/tips-and-tricks-how-do-i-capture-the-output-of-top-to-a-file/#comment-67438 Wed, 16 Apr 2008 19:34:37 +0000 http://www.redhatmagazine.com/2008/04/16/tips-and-tricks-how-do-i-capture-the-output-of-top-to-a-file/#comment-67438 This is a very simple, but very helpful tip. Thanks! This is a very simple, but very helpful tip. Thanks!

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