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Posted to users@httpd.apache.org by "VanderHart, Robert" <Ro...@umassmed.edu> on 2002/06/05 17:41:33 UTC
When do processes need to be killed?
I'm a relative newbie on Apache. We're running Linux 7/Apache 1.3.12.
Lately I've noticed there's a process (see below) called CANamingAdapter
that seems to keep running up CPU time. The process itself is a ColdFusion
server process that controls the data store for application management
features.
I've killed the process using kill -9, but it immediately comes back under a
different PID and then keeps running up time. It's not taking up much %CPU
or %MEM, so I'm not certain how to interpret the high number under TIME.
It seems most of the documentation I've read discusses how to kill
processes, but not if/when they should be killed. Any
suggestions/help/direction would be most appreciated.
(I apologize if the table below doesn't render correctly on your screen; it
is best viewed as plain text).
____________________________________________________________________________
____
163 processes: 162 sleeping, 1 running, 0 zombie, 0 stopped
CPU states: 8.5% user, 2.9% system, 0.0% nice, 88.4% idle
Mem: 127696K av, 122728K used, 4968K free, 49012K shrd, 38464K
buff
Swap: 72252K av, 32712K used, 39540K free 32768K
cached
PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND
9067 nobody 13 0 21168 16M 6824 S 6.8 13.2 1:39 cfserver
9276 rvanderh 8 0 1128 1128 812 R 2.3 0.8 0:00 top
23565 root 3 0 1300 800 460 S 1.1 0.6 78:21
CANamingAdapter
1125 nobody 3 0 16692 10M 176 S 0.9 8.2 13:11 java
8999 apache 1 0 5180 2652 2320 S 0.1 2.0 0:00 httpd
1 root 0 0 120 72 48 S 0.0 0.0 0:06 init
2 root 0 0 0 0 0 SW 0.0 0.0 0:08 kflushd
3 root 0 0 0 0 0 SW 0.0 0.0 0:09 kupdate
4 root 0 0 0 0 0 SW 0.0 0.0 0:00 kpiod
5 root 0 0 0 0 0 SW 0.0 0.0 1:36 kswapd
6 root -20 -20 0 0 0 SW< 0.0 0.0 0:00 mdrecoveryd
61 root 0 0 0 0 0 SW 0.0 0.0 0:00 khubd
372 root 0 0 220 168 120 S 0.0 0.1 0:00 syslogd
382 root 0 0 496 184 156 S 0.0 0.1 0:00 klogd
397 rpc 0 0 88 0 0 SW 0.0 0.0 0:00 portmap
413 root 0 0 0 0 0 SW 0.0 0.0 0:00 lockd
414 root 0 0 0 0 0 SW 0.0 0.0 0:00 rpciod
424 rpcuser 0 0 120 0 0 SW 0.0 0.0 0:00 rpc.statd
439 root 0 0 64 0 0 SW 0.0 0.0 0:00 apmd
490 root 0 0 128 48 28 S 0.0 0.0 0:00 automount
543 nobody 0 0 128 24 16 S 0.0 0.0 0:00 identd
____________________________________________________________________________
___
Robert J. Vander Hart
Electronic Resources Librarian
The Lamar Soutter Library
University of Massachusetts Medical School
55 Lake Avenue N
Worcester MA 01655
Voice: (508) 856-3290
Fax: (508) 856-5899
Email: Robert.VanderHart@umassmed.edu
Web: http://library.umassmed.edu
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Re: When do processes need to be killed?
Posted by Lee Fellows <lf...@4lane.com>.
As a general rule, iff they are interferring with the normal running
of the system. Time, by itself, is meaningless.
On Wed, 2002-06-05 at 11:41, VanderHart, Robert wrote:
> I'm a relative newbie on Apache. We're running Linux 7/Apache 1.3.12.
> Lately I've noticed there's a process (see below) called CANamingAdapter
> that seems to keep running up CPU time. The process itself is a ColdFusion
> server process that controls the data store for application management
> features.
>
> I've killed the process using kill -9, but it immediately comes back under a
> different PID and then keeps running up time. It's not taking up much %CPU
> or %MEM, so I'm not certain how to interpret the high number under TIME.
>
> It seems most of the documentation I've read discusses how to kill
> processes, but not if/when they should be killed. Any
> suggestions/help/direction would be most appreciated.
>
> (I apologize if the table below doesn't render correctly on your screen; it
> is best viewed as plain text).
>
> ____________________________________________________________________________
> ____
> 163 processes: 162 sleeping, 1 running, 0 zombie, 0 stopped
> CPU states: 8.5% user, 2.9% system, 0.0% nice, 88.4% idle
> Mem: 127696K av, 122728K used, 4968K free, 49012K shrd, 38464K
> buff
> Swap: 72252K av, 32712K used, 39540K free 32768K
> cached
>
> PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND
> 9067 nobody 13 0 21168 16M 6824 S 6.8 13.2 1:39 cfserver
> 9276 rvanderh 8 0 1128 1128 812 R 2.3 0.8 0:00 top
> 23565 root 3 0 1300 800 460 S 1.1 0.6 78:21
> CANamingAdapter
> 1125 nobody 3 0 16692 10M 176 S 0.9 8.2 13:11 java
> 8999 apache 1 0 5180 2652 2320 S 0.1 2.0 0:00 httpd
> 1 root 0 0 120 72 48 S 0.0 0.0 0:06 init
> 2 root 0 0 0 0 0 SW 0.0 0.0 0:08 kflushd
> 3 root 0 0 0 0 0 SW 0.0 0.0 0:09 kupdate
> 4 root 0 0 0 0 0 SW 0.0 0.0 0:00 kpiod
> 5 root 0 0 0 0 0 SW 0.0 0.0 1:36 kswapd
> 6 root -20 -20 0 0 0 SW< 0.0 0.0 0:00 mdrecoveryd
> 61 root 0 0 0 0 0 SW 0.0 0.0 0:00 khubd
> 372 root 0 0 220 168 120 S 0.0 0.1 0:00 syslogd
> 382 root 0 0 496 184 156 S 0.0 0.1 0:00 klogd
> 397 rpc 0 0 88 0 0 SW 0.0 0.0 0:00 portmap
> 413 root 0 0 0 0 0 SW 0.0 0.0 0:00 lockd
> 414 root 0 0 0 0 0 SW 0.0 0.0 0:00 rpciod
> 424 rpcuser 0 0 120 0 0 SW 0.0 0.0 0:00 rpc.statd
> 439 root 0 0 64 0 0 SW 0.0 0.0 0:00 apmd
> 490 root 0 0 128 48 28 S 0.0 0.0 0:00 automount
> 543 nobody 0 0 128 24 16 S 0.0 0.0 0:00 identd
> ____________________________________________________________________________
> ___
>
>
>
> Robert J. Vander Hart
> Electronic Resources Librarian
> The Lamar Soutter Library
> University of Massachusetts Medical School
> 55 Lake Avenue N
> Worcester MA 01655
>
> Voice: (508) 856-3290
> Fax: (508) 856-5899
> Email: Robert.VanderHart@umassmed.edu
> Web: http://library.umassmed.edu
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
>
>
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Re: When do processes need to be killed?
Posted by Pietro Cagnoni <pc...@mclink.net>.
it's a little offtopic...
VanderHart, Robert wrote:
> I'm a relative newbie on Apache. We're running Linux 7/Apache 1.3.12.
> Lately I've noticed there's a process (see below) called CANamingAdapter
> that seems to keep running up CPU time. The process itself is a ColdFusion
> server process that controls the data store for application management
> features.
if you use ColdFusion, maybe you need it running!
> I've killed the process using kill -9, but it immediately comes
back under a
> different PID and then keeps running up time. It's not taking up much %CPU
> or %MEM, so I'm not certain how to interpret the high number under TIME.
the TIME column is the cpu time the process used since it started.
from what i see in your top output, it's a very little load: keep
it active (ie don't kill it) if it doesn't cause you problems.
since it looks like you're new to unix in general (my apologies if
you're not) remember that kill -9 doesn't allow the killed process
to terminate properly, so use it just if you absolutely need it.
hope it helps.
pietro.
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