[Anthill-pro] What CPU usage is expected by Anthill server?

[Peter Steele]

Here's an interesting snapshot: This is the first few lines from the
"top" command:

 

top - 15:26:49 up 64 days,  2:14,  3 users,  load average: 0.10, 0.20,
0.25

Tasks: 143 total,   1 running, 142 sleeping,   0 stopped,   0 zombie

Cpu(s): 19.8% us,  0.2% sy,  0.0% ni, 79.9% id,  0.0% wa,  0.0% hi,
0.2% si

Mem:   4109408k total,  3990708k used,   118700k free,    89004k buffers

Swap:  8385920k total,      144k used,  8385776k free,  3012000k cached

 

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND


 7778 root      18   0  530m 300m 8972 S   40  7.5 238:02.05 java


30397 root      16   0  7348 1068  772 R    0  0.0   0:29.29 top


    1 root      16   0  4756  556  460 S    0  0.0   0:01.23 init


    2 root      RT   0     0    0    0 S    0  0.0   0:01.91 migration/0


 

As you can see, process 7778 is current the top CPU user. This is the
Anthill server. I rebooted the server just two days ago and it as
already consumed over 238 minutes of CPU time. Nothing else comes close
to this, and the system has been up for 64 days. This seems to be
pointing to some kind of problem. What should we expect as far as CPU
usage is concerned for the Anthill server process?

 

From: anthill-pro-bounces at lists.urbancode.com
[mailto:anthill-pro-bounces at lists.urbancode.com] On Behalf Of Peter
Steele
Sent: Wednesday, May 21, 2008 1:21 PM
To: AnthillPro user and support list.
Subject: RE: [Anthill-pro] What CPU usage is expected by Anthill server?

 

The server still seems to be a CPU hog, with it almost always being the
number one process on the "top" list, even when the system is largely
idol. We've added 40+ agents recently, but I did not check the server's
CPU usage before adding all the new agents, and I also did not what the
CPU usage was before upgrading to 3.5. Fortunately the command failures
we were seeing the other day appear to have stopped after the reboot,
although the GUI is still very slow to respond to many typical commands.
For example, it just took 30 seconds for Anthill to respond to a click
on a project displayed in the "Your Active Projects" column of the
Dashboard. This seems to be slower than what it was in 3.4.12, but as I
indicated we have added a lot of agents lately. We'll be adding more as
well, exceeding 100 agents in the next while. Is there anything we
should do to improve performance?

 

From: anthill-pro-bounces at lists.urbancode.com
[mailto:anthill-pro-bounces at lists.urbancode.com] On Behalf Of Steve
Boone
Sent: Wednesday, May 21, 2008 9:39 AM
To: AnthillPro user and support list.
Subject: Re: [Anthill-pro] What CPU usage is expected by Anthill server?

 

Peter,

Has this been happening in a regular basis?  

What happened after the restart?



On Wed, May 14, 2008 at 6:44 PM, Peter Steele <psteele at maxiscale.com>
wrote:

We've noticed some very slow feedback from the Anthill server today,
even coming back with failures for some operations. The Unix top command
is showing the ah3server process as taking as much as 100% CPU at times,
and is consistently the top 1 or 2 processes on the system. There are
just two builds going on, and both of course are running on agent
systems, not the server. I don't recall seeing this before. We upgraded
to 3.5 yesterday and I am wondering if that might be to blame. It's
certainly very slow right now; I'll restart the server as soon as the
builds are done...

 


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