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Top Forums UNIX for Dummies Questions & Answers linux tomcat load average issue Post 302545956 by dhavaln on Wednesday 10th of August 2011 05:07:34 AM
Old 08-10-2011
linux tomcat load average issue

Hello I am running a liferay application in tomcat on one of my hosted linux machine having 4GB of ram and 1 CPU.

I get the tomcat response really slow and with much digging I found that the cpu might be loaded and can be tracked with top command.

The following is the output of top command:

Code:
top - 17:07:28 up 142 days, 21:40,  2 users,  load average: 24.64, 14.98, 7.41
Tasks:  84 total,   1 running,  83 sleeping,   0 stopped,   0 zombie
Cpu0  :  1.2%us,  0.7%sy,  0.1%ni, 92.9%id,  1.6%wa,  3.2%hi,  0.3%si,  0.0%st
Mem:   4025136k total,  3880476k used,   144660k free,   242620k buffers
Swap:  4128760k total,       64k used,  4128696k free,  2538028k cached


In the above load average values I consider 24.64 is the load in last one minute.

Is it the expected or normal value??
 

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ruptime(1)						      General Commands Manual							ruptime(1)

NAME
ruptime - show status of local machines SYNOPSIS
DESCRIPTION
outputs a status line for each machine on the local network that is running the daemon. status lines are formed from packets broadcast once every 3 minutes between daemons (see rwhod(1M)) on each host on the network. Each status line has a field for the name of the machine, the status of the machine (up or down), how long the machine has been up or down, the number of users logged into the machine, and the 1-, 5- and 15-minute load averages for the machine when the packet was sent. The status of the machine is reported as ``up'' unless no report has been received from the machine for 11 minutes or more. The length of time that the machine has been up is shown as: Load averages are the average number of jobs in the run queue over the last 1-, 5- and 15-minute intervals when the packet was sent. An example status line output by might be: The above status line would be interpreted as follows: is presently ``up'' and has been up for 1 day, 5 hours and 15 minutes. It currently has 7 users logged in. Over the last 1-minute inter- val, an average of 1.47 jobs were in the run queue. Over the last 5-minute interval, an average of 1.16 jobs were in the run queue. Over the last 15-minute interval, an average of 0.80 jobs were in the run queue. If a user has not used the system for an hour or more, the user is considered idle. Idle users are not shown unless the option is speci- fied. Options If no options are specified, the listing is sorted by host name. Options change sorting order as follows: Sort by load average. Sort by up time. Sort by the number of users. Reverse the sort order. DIAGNOSTICS
No status report files in Ask the system administrator to check whether the daemon is running. AUTHOR
was developed by the University of California, Berkeley. FILES
Data files SEE ALSO
rwho(1), rwhod(1M). ruptime(1)
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