3
votes
1answer
251 views

Measuring load - %CPU in top is different than %us

When I run TOP on a remote server, I see a very small system utilization (3.8%us). However, for the actual process I am seeing 29.6% of the CPU. Since this server has 8 CPU cores, is the %CPU the ...
2
votes
3answers
173 views

finding kernel space programs [duplicate]

how can we determine %sy process that is Consuming CPU. In the following case there is no netfilter and traffic is under 1 mbps.but still system process are taking too much cpu and cpu usage for ...
0
votes
1answer
374 views

CentOS 5: is %wa too high or optimal?

i have question about waiting for HDD. I'm not sure what is optimal %wa. Server running browser game, i know that there is a lot hdd writing but im not sure what is optimal %wa. Server running 8 ...
2
votes
2answers
261 views

Monitor CPU usage over period of time on Ubuntu

Is there some way to monitor my CPU usage over a period of time, e.g. get a graph that shows CPU% vs. date/time? I occasionally see high load using htop, but I'd like to see what's happening ...
2
votes
3answers
1k views

Diagnosing high CPU waiting

I have a monitoring server that is running icinga/collectd/graphite with about 50 hosts. I have noticed high load/slugging performance on the box. If you take a look at top, you'll see: Cpu(s): ...
0
votes
1answer
333 views

top command occupied high cpu usage

My system is SUSE 10 and I observe that top occupies 57% CPU usage when I use it. I don't have too many processes: ps -eLf | wc -l 106 Here are top's stats: cat /proc/2913/stat 2913 (top) R ...
0
votes
2answers
290 views

Load Average cpu linux server

i have a problem with the load average on server, I'm using on server When I check the processor - with "top" command I see that : top - 04:27:37 up 39 min, 1 user, load average: 0.78, 0.77, 0.77 ...
0
votes
2answers
400 views

Top not showing processes using CPU resources

I have this output from top for the top 10 processes sorted by CPU usage descending: top - 11:19:58 up 1:46, 2 users, load average: 3.22, 3.48, 3.34 Tasks: 66 total, 5 running, 61 sleeping, ...
2
votes
1answer
449 views

top, w, ps showing wrong CPU times

I've spotted this trait recently on some of my Ubuntu servers (10.04.2) on Amazon EC2 (not noticed this on any physical boxes), and can't quite comprehend how it's getting these figures. They can't be ...
2
votes
2answers
223 views

More in depth TOP command?

I recently came across a screenshot that looks to be using the "top" command, but it is showing a lot more in-depth info in terms of CPU usage: The program shows detail down to which plugin in ...
4
votes
7answers
3k views

High CPU load but top processes in top all around 0%

We have a server with unusual high load and cpu util, but we can't figure out why. When we run top all the procs seem to be very low cpu. http://cl.ly/2d1g0K3q261r0R0K3e35 Is there a better way to ...
2
votes
1answer
199 views

EC2 instance CPU in thousands

I started a new instance (c1.medium) and top show some crazy cpu usage PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 9561 ubuntu 20 0 84888 ...
2
votes
2answers
2k views

top: What does cpu usage mean?

I have several processes right now running at 100%. Is it 100% of the alloted resources to the process? UPDATE Take a look at this for example: top - 06:01:13 up 5 days, 22:19, 2 users, load ...
0
votes
1answer
669 views

What is normal SCSI error handling process (scsi_eh_3) CPU time usage?

Last week I got setup with a new dedicated server that is running 4x SCSI drives in RAID 10 on CentOS. The machine is pretty lightly loaded at the moment and has been running for 8 days. The process ...
2
votes
5answers
735 views

%CPU for a process

Looking at the output of top on our server, one of my colleagues told me that the fact that some processes got less than 100 "%CPU" was because I was running too many processes. He added that based on ...
10
votes
5answers
4k views

Confused by CPU values in Unix 'top' command

In the screenshot below, the overall CPU is being reported as 3% but the mysqld process is reported as using 57%. Is this 57% of the overall 3% and thus mysqld is only using about 1.5% of the CPU? ...