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  #1  
Old
Junior Guru Wannabe
 
Join Date: Aug 2005
Posts: 99

What's Causing Server Overload? top info included


I ran top but I can't decipher it. Any help is appreciated, thanks. I've attached a file with a few seconds of top output.
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File Type: txt log.txt (20.7 KB, 138 views)



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  #2  
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Performance Specialist
 
Join Date: Dec 2004
Location: New York, NY
Posts: 10,524
Paste the results of

ps auxf

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  #3  
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Junior Guru Wannabe
 
Join Date: Aug 2005
Posts: 99
Here's the results of ps auxf and I also ran top again. My server was fine then all of a sudden - overload! It's been like this for hours now.
Attached Files
File Type: txt log2.txt (31.0 KB, 153 views)

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  #4  
Old
Junior Guru
 
Join Date: Dec 2001
Location: Northern Virginia
Posts: 238
From the results, it doesn't look like your server (VPS) is causing the high load. It could be from other servers on the same physical box.

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  #5  
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Junior Guru Wannabe
 
Join Date: Aug 2005
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Really? I thought I was supposed to be isolated from other VPSes. It's happening again and I can't find the problem.

  #6  
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Aspiring Evangelist
 
Join Date: Dec 2005
Posts: 400
You are isolated from other VPSes but the Hardware Node could still have "hog" VPSes running on same NOde.

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  #7  
Old
Newbie
 
Join Date: Mar 2006
Posts: 6
Does the performance seem bad on the system? High load could be due to processes waiting on an event, like a disk sleep. For example if 5 processes are working on an nfs mount, and it becomes unavailable, with the hard mount option, the load average will be 5, even if there's no other work being done on the system.

To check for these run cat /proc/[0-9]*/status | grep -i "disk sleep"

Also do you see swapping if you run vmstat

  #8  
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Junior Guru Wannabe
 
Join Date: Aug 2005
Posts: 99
I ran both and got this, I don't know what it means.


root@vps [~]# cat /proc/[0-9]*/status | grep -i "disk sleep"
State: D (disk sleep)
State: D (disk sleep)
cat: /proc/27744/status: No such file or directory


root@vps [~]# vmstat
procs memory swap io system cpu
r b swpd free buff cache si so bi bo in cs us sy id wa
0 1 3194452 27876 1705116 2165928 9 8 21 4 15 1 6 1 17 0

  #9  
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Junior Guru Wannabe
 
Join Date: Nov 2004
Location: Quebec City
Posts: 39
Quote:
Originally Posted by jbwebhosting
You are isolated from other VPSes but the Hardware Node could still have "hog" VPSes running on same NOde.
Hum...

So, what you're saying is that it's possible that another VPS can cause problems that affect others on the same Node?

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