Re: [OT] Tomcat dies suddenly

2010-02-24 Thread Christopher Schultz
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Chuck,

On 2/24/2010 10:00 AM, Caldarale, Charles R wrote:
 From: Carl [mailto:c...@etrak-plus.com]
 Subject: RE: Tomcat dies suddenly

 the core files on my systems were in several directories
 
 I wonder if the above is a clue to what's going on.  I've always seen
 core files written to the current directory of the dying process,
 never scattered around arbitrarily.  Tomcat's current directory
 should be $CATALINA_HOME/bin;

Mine never is, but I run using catalina.sh, which doesn't execute a 'cd'
anywhere. Maybe this happens when running as a Windows service or
something, but I don't see this behavior when running on *NIX.

 if one of the webapps is changing the
 current directory, could that be contributing to the failure by
 confusing other code or the JVM?  (Or is this just another of the
 many red herrings?)

I suppose that's possible. Carl, are the core files all from the same
run? If so, something is very very wrong. Otherwise, maybe the reason
why you couldn't find any traces of your crash was that your CWD was
changing from what you expected it to be to some random subdirectory.
shrug

- -chris
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Re: [OT] Tomcat dies suddenly

2010-02-24 Thread Carl

Chris,

As I said in an email a minute ago, I use a cron process to stop Tomcat, 
copy in new war's and restart Tomcat at 1:00AM.  The script is pretty 
simple:


JAVA_HOME=/usr/local/java; export JAVA_HOME

cd /usr/local/tomcat/bin
./shutdown.sh
sleep 60

rm -rf /usr/local/tomcat/webapps/livonia
rm -rf /usr/local/tomcat/webapps/default
rm -rf /usr/local/tomcat/webapps/paragon

cp /usr/local/tomcat_wars/etrak-plus.war 
/usr/local/tomcat/webapps/livonia.war


cp /usr/local/tomcat_wars/etrak-plus.war 
/usr/local/tomcat/webapps/default.war


cp /usr/local/tomcat_wars/etrak-plus.war 
/usr/local/tomcat/webapps/paragon.war


cp /usr/local/tomcat_wars/etrak-plus.war /usr/local/tomcat/webapps/test.war

sleep 30

strace -o /usr/local/tomcat/logs/trace_log.txt 
/usr/local/tomcat/bin/startup.sh


exit

I am reworking the strace part to rotate the logs.

Thanks,

Carl


- Original Message - 
From: Christopher Schultz ch...@christopherschultz.net

To: Tomcat Users List users@tomcat.apache.org
Sent: Wednesday, February 24, 2010 10:15 AM
Subject: Re: [OT] Tomcat dies suddenly



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Chuck,

On 2/24/2010 10:00 AM, Caldarale, Charles R wrote:

From: Carl [mailto:c...@etrak-plus.com]
Subject: RE: Tomcat dies suddenly

the core files on my systems were in several directories


I wonder if the above is a clue to what's going on.  I've always seen
core files written to the current directory of the dying process,
never scattered around arbitrarily.  Tomcat's current directory
should be $CATALINA_HOME/bin;


Mine never is, but I run using catalina.sh, which doesn't execute a 'cd'
anywhere. Maybe this happens when running as a Windows service or
something, but I don't see this behavior when running on *NIX.


if one of the webapps is changing the
current directory, could that be contributing to the failure by
confusing other code or the JVM?  (Or is this just another of the
many red herrings?)


I suppose that's possible. Carl, are the core files all from the same
run? If so, something is very very wrong. Otherwise, maybe the reason
why you couldn't find any traces of your crash was that your CWD was
changing from what you expected it to be to some random subdirectory.
shrug

- -chris
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Re: [OT] Tomcat dies suddenly

2010-02-24 Thread Pid

On 24/02/2010 15:15, Christopher Schultz wrote:

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Hash: SHA1

Chuck,

On 2/24/2010 10:00 AM, Caldarale, Charles R wrote:

From: Carl [mailto:c...@etrak-plus.com]
Subject: RE: Tomcat dies suddenly

the core files on my systems were in several directories


I wonder if the above is a clue to what's going on.  I've always seen
core files written to the current directory of the dying process,
never scattered around arbitrarily.  Tomcat's current directory
should be $CATALINA_HOME/bin;


I usually see dumps in $CATALINA_HOME/logs, which is where I am 
habitually if I'm starting up from a script.



p



Mine never is, but I run using catalina.sh, which doesn't execute a 'cd'
anywhere. Maybe this happens when running as a Windows service or
something, but I don't see this behavior when running on *NIX.



if one of the webapps is changing the
current directory, could that be contributing to the failure by
confusing other code or the JVM?  (Or is this just another of the
many red herrings?)


I suppose that's possible. Carl, are the core files all from the same
run? If so, something is very very wrong. Otherwise, maybe the reason
why you couldn't find any traces of your crash was that your CWD was
changing from what you expected it to be to some random subdirectory.
shrug

- -chris
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Re: [OT] Tomcat dies suddenly

2010-02-24 Thread Konstantin Kolinko
2010/2/24 Carl c...@etrak-plus.com:
 rm -rf /usr/local/tomcat/webapps/livonia
 rm -rf /usr/local/tomcat/webapps/default
 rm -rf /usr/local/tomcat/webapps/paragon
1). test  webapp not mentioned
2). note that there are also webapp files in the work/ directory and
there might be a context file in a subdirectory of conf (e.g.
conf/Catalina/localhost/)   If you need a 100% clean run, you may want
to consider explicitly removing all the files from the webapp working
directory in work/.

 strace -o /usr/local/tomcat/logs/trace_log.txt
 /usr/local/tomcat/bin/startup.sh

Note that startup.sh  (aka catalina.sh start) will spawn a new process.
I have never used strace myself, but it unlikely will be able to follow that.

You should try catalina.sh run instead.


Best regards,
Konstantin Kolinko

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Re: [OT] Tomcat dies suddenly

2010-02-17 Thread Ognjen Blagojevic

André Warnier wrote:
Now I am very curious, because I happen to have supplied the media 
archive management software used by a very large broadcasting 
organisation, where a similar story happened to the server running ditto 
software (this was a few years ago).  Right after that incident, the 
organisation in question purchased a second server and a second copy of 
the software, and asked a partner of mine to design a failover solution.
Of course we do not want to name anyone precisely, but it would be funny 
if this was the same incident.

?


You turned adversity into advantage. Good business lesson. :)

I believe it is not the same company, mine was educational institution, 
and the incident was more than 10 years ago. Anyway, it is good to know 
that fellow developers and administrators are facing the same problems, 
around the globe.


-Ognjen

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Re: [OT] Tomcat dies suddenly

2010-02-17 Thread André Warnier

Carl wrote:
... I was thinking maybe Andre could do the same for my

servers, you know, with his telepathy thingie and all.

You are confusing people.  The telepath on this list is Pid. He is 
particularly good at guessing the OS, JVM, Tomcat version etc.. of 
people who post here without specifying them.
Chuck is our resident servlet spec authority and general enforcer, with 
a special interest in memory allocation and GC issues.
Christopher is more into esoteric code-splitting stuff, with sidelines 
in alphabets, sessions and performance issues.  Then there is an 
assorted series of intermittent characters with various specialties.  We 
also have a couple of official buffoons.  And then of course there are 
Mark and Filip, the top gurus and fathers of us all, who sometimes 
condescend to offer their pearls of wisdom to us peons when we really 
stray off base. They are the ones who create the partition, we merely 
try to play the tune. As for me, I am just a spectator mostly, happiest 
when I get some not-too-technical tidbit which I think I can handle just 
with ze little grey cells, as a mythical compatriot of mine would say. 
They did not help too much in the present case though.  Apart from Mark 
and Filip, we all had rich uncles in America who left us their fortune, 
which explains why we can stick around here instead of doing any real work.



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Re: [OT] Tomcat dies suddenly

2010-02-17 Thread Peter Crowther
On 17 February 2010 13:55, André Warnier a...@ice-sa.com wrote:
 We also have a couple of official buffoons.

And a plethora of unofficial ones

- Peter

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RE: [OT] Tomcat dies suddenly

2010-02-16 Thread Jeffrey Janner
Reminds me of a story from an old-timer friend of mine.
This was back in the day of shuddertext-based terminals/shudder.
The company he worked for had a military contract to install bunch of terminals 
in an office building at a local airbase.  A few days after the workers moved 
in, his company got a call that something was wrong.  About every few seconds, 
every terminal would get a string of random characters, each terminal getting a 
different string.  After puzzling over the problem for a bit, he happened to 
look out the window and see the nearby radar dish sweep past the building at 
the same time the odd characters appeared.  They checked a few random cables 
and found that the installers had used unshielded cables to save a few pennies. 
 According to him, they spent the weekend wrapping the major cable bundles in 
foil as a stop-gap until they could come in and replace all the cables.

-Original Message-
From: George Sexton [mailto:geor...@mhsoftware.com] 
Sent: Sunday, February 14, 2010 10:58 AM
To: 'Tomcat Users List'
Subject: RE: [OT] Tomcat dies suddenly





 -Original Message-
 From: André Warnier [mailto:a...@ice-sa.com]
 Sent: Saturday, February 13, 2010 3:28 PM
 To: Tomcat Users List
 Subject: Re: [OT] Tomcat dies suddenly
 
 Caldarale, Charles R wrote:


 Since we must have by now exhausted all the normal  causes of such
 errors, maybe we should recommend
 a) a visual inspection of the systems, to see if there are any pinsize
 holes, or paint flaking off or so
 b) the installation of a surveilance camera, to check if the SegFaults
 are synchronous with any visible phenomenon (sparks, Cerenkow
 radiation,
 etc.)
 c) moving the systems to the basement ?

There's a story in a book I once read where a computer system crashed every 
morning around the same time. No one could figure it out. Finally, the head of 
IS goes down to the computer room at the expected time. In walks a maintenance 
man who comes in, opens the cabinet for the computer, and plugs a floor 
polisher into a spare outlet in the cabinet. When the maintenance man activates 
the polisher, boom, the system crashed.

When asked by his boss what the problem was, he told him it was a buffer 
problem.

http://www.amazon.com/Devouring-Fungus-Jennings-Karla/dp/0393307328

I used to have a Novell server that would mysteriously reboot every few days. 
In my case, the server was on the same circuit as a laser printer, and both 
were plugged into a Haworth cubicle outlet. Periodically, load was too much and 
it would causes a server reboot. We brought in another circuit NOT on the 
inadequate cubicle wiring system, and the problem went away.

George Sexton
MH Software, Inc.
http://www.mhsoftware.com/
Voice: 303 438 9585


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Re: [OT] Tomcat dies suddenly

2010-02-16 Thread Mark H. Wood
Heh, when I was in another building I was issued an ADDS Viewpoint
terminal which would, every so often, begin typing all by itself and
quite at random.  Eventually we determined that my cubicle was
directly underneath an arc welding station in the welding shop one
floor up, and when welding classes were in session the EMI was picked
up by my keyboard.

(Written from one of my xterms.)

-- 
Mark H. Wood, Lead System Programmer   mw...@iupui.edu
Friends don't let friends publish revisable-form documents.


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Re: [OT] Tomcat dies suddenly

2010-02-16 Thread André Warnier

Ognjen Blagojevic wrote:


I heard almost the same story in the last company I used to work. The 
only differences are: instead of floor polisher it was a vacuum cleaner, 
and there was no spare outlet... :)


Now I am very curious, because I happen to have supplied the media 
archive management software used by a very large broadcasting 
organisation, where a similar story happened to the server running ditto 
software (this was a few years ago).  Right after that incident, the 
organisation in question purchased a second server and a second copy of 
the software, and asked a partner of mine to design a failover solution.
Of course we do not want to name anyone precisely, but it would be funny 
if this was the same incident.

?

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Re: [OT] Tomcat dies suddenly

2010-02-16 Thread Peter Crowther
An ex-colleague of mine tells the story (which may well be apocryphal, but
is good fun) of being called to an industrial estate in South Wales to debug
a problem where floppy disks in the office would mysteriously wipe
themselves - pretty much every floppy in the office, at the same time.  It
happened very occasionally, but with no hard disks and the company's
financial accounts stored on floppies, this caused considerable problems.
They'd been through the usual
did-you-stick-it-to-the-filing-cabinet-with-a-fridge-magnet questions, and
everyone in the office swore they were taking all reasonable precautions.

Eventually she solved the problem when she saw the crane from the scrapyard
next door swing a big load of scrap past the office window, all dangling
from the large electromagnet at the end of the line... all she could do was
recommend they moved offices or stuck a mu-metal cage round the room.

- Peter

On 16 February 2010 18:57, Mark H. Wood mw...@iupui.edu wrote:

 Heh, when I was in another building I was issued an ADDS Viewpoint
 terminal which would, every so often, begin typing all by itself and
 quite at random.  Eventually we determined that my cubicle was
 directly underneath an arc welding station in the welding shop one
 floor up, and when welding classes were in session the EMI was picked
 up by my keyboard.

 (Written from one of my xterms.)

 --
 Mark H. Wood, Lead System Programmer   mw...@iupui.edu
 Friends don't let friends publish revisable-form documents.



Re: [OT] Tomcat dies suddenly

2010-02-16 Thread Hassan Schroeder
On Tue, Feb 16, 2010 at 3:17 PM, Peter Crowther
peter.crowt...@melandra.com wrote:
snip/

Oh, now we're on magnet stories? :-)

Back in the day, I was working as an IBM CE in downtown SF. One
of our branch specialists and I were in an elevator headed out to a
customer's office with a piece of telecom test equipment that had a
very powerful magnet on its back to attach to the system cabinet.

Chatting away, we only realized as we left the elevator that the guy
standing next to us was holding a removable disk pack in a plastic
cake-cover -- right next to the test box. Always wondered how that
turned out for him when that pack got mounted...

-- 
Hassan Schroeder  hassan.schroe...@gmail.com
twitter: @hassan

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Re: [OT] Tomcat dies suddenly

2010-02-14 Thread Carl

Jorge,

If the problem was easy, there wouldn't be the number of threads.

I am running the standard JVM from Sun, in fact, have tried two versions.

The boxes are not the problem because the problem appears on two very 
different boxes.


Thanks,

Carl

- Original Message - 
From: Jorge Medina cerebrotecnolog...@gmail.com

To: Tomcat Users List users@tomcat.apache.org
Sent: Sunday, February 14, 2010 12:44 AM
Subject: Re: [OT] Tomcat dies suddenly


There have been 144 messages on this thread...and you have spent already
months trying to solve the problem...I think it will be more cost effective
to replace the boxes, run a standard JVM from Sun..and close this
thread!

On Sat, Feb 13, 2010 at 6:11 PM, Caldarale, Charles R 
chuck.caldar...@unisys.com wrote:


 From: André Warnier [mailto:a...@ice-sa.com]
 Subject: Re: [OT] Tomcat dies suddenly

 Maybe we should also investigate if the SegFaults are simultaneous with
 anyone specific entering the room where the servers are.

Ah yes, the old nylon underwear problem...

Or the pizza with plutonium toppings.

 - Chuck


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Re: [OT] Tomcat dies suddenly

2010-02-14 Thread Carl

Anthony,

Very certain it is not the hardware, am running Sun JVM, could be the OS. 
May be my next step (CentOS.)


Thanks,

Carl
- Original Message - 
From: anthonyvie...@gmail.com

To: Tomcat Users List users@tomcat.apache.org
Sent: Sunday, February 14, 2010 1:01 AM
Subject: Re: [OT] Tomcat dies suddenly


CentOS, Sun JVM, IBM Hardware = 100% Uptime

On Sat, Feb 13, 2010 at 9:44 PM, Jorge Medina
cerebrotecnolog...@gmail.comwrote:


There have been 144 messages on this thread...and you have spent already
months trying to solve the problem...I think it will be more cost 
effective

to replace the boxes, run a standard JVM from Sun..and close this
thread!

On Sat, Feb 13, 2010 at 6:11 PM, Caldarale, Charles R 
chuck.caldar...@unisys.com wrote:

  From: André Warnier [mailto:a...@ice-sa.com]
  Subject: Re: [OT] Tomcat dies suddenly
 
  Maybe we should also investigate if the SegFaults are simultaneous 
  with

  anyone specific entering the room where the servers are.

 Ah yes, the old nylon underwear problem...

 Or the pizza with plutonium toppings.

  - Chuck


 THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY
 MATERIAL and is thus for use only by the intended recipient. If you
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RE: [OT] Tomcat dies suddenly

2010-02-14 Thread George Sexton




 -Original Message-
 From: André Warnier [mailto:a...@ice-sa.com]
 Sent: Saturday, February 13, 2010 3:28 PM
 To: Tomcat Users List
 Subject: Re: [OT] Tomcat dies suddenly
 
 Caldarale, Charles R wrote:


 Since we must have by now exhausted all the normal  causes of such
 errors, maybe we should recommend
 a) a visual inspection of the systems, to see if there are any pinsize
 holes, or paint flaking off or so
 b) the installation of a surveilance camera, to check if the SegFaults
 are synchronous with any visible phenomenon (sparks, Cerenkow
 radiation,
 etc.)
 c) moving the systems to the basement ?

There's a story in a book I once read where a computer system crashed every 
morning around the same time. No one could figure it out. Finally, the head of 
IS goes down to the computer room at the expected time. In walks a maintenance 
man who comes in, opens the cabinet for the computer, and plugs a floor 
polisher into a spare outlet in the cabinet. When the maintenance man activates 
the polisher, boom, the system crashed.

When asked by his boss what the problem was, he told him it was a buffer 
problem.

http://www.amazon.com/Devouring-Fungus-Jennings-Karla/dp/0393307328

I used to have a Novell server that would mysteriously reboot every few days. 
In my case, the server was on the same circuit as a laser printer, and both 
were plugged into a Haworth cubicle outlet. Periodically, load was too much and 
it would causes a server reboot. We brought in another circuit NOT on the 
inadequate cubicle wiring system, and the problem went away.

George Sexton
MH Software, Inc.
http://www.mhsoftware.com/
Voice: 303 438 9585


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RE: [OT] Tomcat dies suddenly

2010-02-14 Thread George Sexton
Most IS people by nature are problem solvers. We like puzzles, and we like
solving them. This is a useful exercise because someday this problem or
something similar will happen to someone else.

If it's really bugging you, no one is forcing you to read the messages. Why
don't you just ignore them?


George Sexton
MH Software, Inc.
http://www.mhsoftware.com/
Voice: 303 438 9585
 

 -Original Message-
 From: Jorge Medina [mailto:cerebrotecnolog...@gmail.com]
 Sent: Saturday, February 13, 2010 10:45 PM
 To: Tomcat Users List
 Subject: Re: [OT] Tomcat dies suddenly
 
 There have been 144 messages on this thread...and you have spent
 already
 months trying to solve the problem...I think it will be more cost
 effective
 to replace the boxes, run a standard JVM from Sun..and close this
 thread!
 
 On Sat, Feb 13, 2010 at 6:11 PM, Caldarale, Charles R 
 chuck.caldar...@unisys.com wrote:
 
   From: André Warnier [mailto:a...@ice-sa.com]
   Subject: Re: [OT] Tomcat dies suddenly
  
   Maybe we should also investigate if the SegFaults are simultaneous
 with
   anyone specific entering the room where the servers are.
 
  Ah yes, the old nylon underwear problem...
 
  Or the pizza with plutonium toppings.
 
   - Chuck
 
 
  THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE
 PROPRIETARY
  MATERIAL and is thus for use only by the intended recipient. If you
 received
  this in error, please contact the sender and delete the e-mail and
 its
  attachments from all computers.
 
 


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Re: [OT] Tomcat dies suddenly

2010-02-14 Thread Carl

George,

Been there.   In Brookfield (CT), under certain circumstances, when someone 
would use the copier (not on the same circuit), the Novell server would go 
down.


Here, we have all new wiring directly from the fuse box with really good 
UPS's in between.


Thanks,

Carl

- Original Message - 
From: George Sexton geor...@mhsoftware.com

To: 'Tomcat Users List' users@tomcat.apache.org
Sent: Sunday, February 14, 2010 11:58 AM
Subject: RE: [OT] Tomcat dies suddenly







-Original Message-
From: André Warnier [mailto:a...@ice-sa.com]
Sent: Saturday, February 13, 2010 3:28 PM
To: Tomcat Users List
Subject: Re: [OT] Tomcat dies suddenly

Caldarale, Charles R wrote:




Since we must have by now exhausted all the normal  causes of such
errors, maybe we should recommend
a) a visual inspection of the systems, to see if there are any pinsize
holes, or paint flaking off or so
b) the installation of a surveilance camera, to check if the SegFaults
are synchronous with any visible phenomenon (sparks, Cerenkow
radiation,
etc.)
c) moving the systems to the basement ?


There's a story in a book I once read where a computer system crashed every 
morning around the same time. No one could figure it out. Finally, the head 
of IS goes down to the computer room at the expected time. In walks a 
maintenance man who comes in, opens the cabinet for the computer, and plugs 
a floor polisher into a spare outlet in the cabinet. When the maintenance 
man activates the polisher, boom, the system crashed.


When asked by his boss what the problem was, he told him it was a buffer 
problem.


http://www.amazon.com/Devouring-Fungus-Jennings-Karla/dp/0393307328

I used to have a Novell server that would mysteriously reboot every few 
days. In my case, the server was on the same circuit as a laser printer, and 
both were plugged into a Haworth cubicle outlet. Periodically, load was too 
much and it would causes a server reboot. We brought in another circuit NOT 
on the inadequate cubicle wiring system, and the problem went away.


George Sexton
MH Software, Inc.
http://www.mhsoftware.com/
Voice: 303 438 9585


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Re: [OT] Tomcat dies suddenly

2010-02-14 Thread Ognjen Blagojevic

George Sexton wrote:

There's a story in a book I once read where a computer system crashed every 
morning around the same time. No one could figure it out. Finally, the head of 
IS goes down to the computer room at the expected time. In walks a maintenance 
man who comes in, opens the cabinet for the computer, and plugs a floor 
polisher into a spare outlet in the cabinet. When the maintenance man activates 
the polisher, boom, the system crashed.


I heard almost the same story in the last company I used to work. The 
only differences are: instead of floor polisher it was a vacuum cleaner, 
and there was no spare outlet... :)


Regards,
Ognjen

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Re: [OT] Tomcat dies suddenly

2010-02-14 Thread Christopher Schultz
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Anthony,

On 2/14/2010 1:01 AM, anthonyvie...@gmail.com wrote:
 CentOS, Sun JVM, IBM Hardware = 100% Uptime

100%, eh? Care to make a wager?

- -chris
-BEGIN PGP SIGNATURE-
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iEYEARECAAYFAkt4aXQACgkQ9CaO5/Lv0PDdqgCdFW5C4rWO4XwCI9/EK9APlk+K
CXIAn3akAol+pBE12guiAz+krXytzV1T
=w3u5
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Re: [OT] Tomcat dies suddenly

2010-02-14 Thread anthonyvierra
ok i left out the cluster part ;)

On Sun, Feb 14, 2010 at 1:21 PM, Christopher Schultz 
ch...@christopherschultz.net wrote:

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1

 Anthony,

 On 2/14/2010 1:01 AM, anthonyvie...@gmail.com wrote:
  CentOS, Sun JVM, IBM Hardware = 100% Uptime

 100%, eh? Care to make a wager?

 - -chris
 -BEGIN PGP SIGNATURE-
 Version: GnuPG v1.4.10 (MingW32)
 Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

 iEYEARECAAYFAkt4aXQACgkQ9CaO5/Lv0PDdqgCdFW5C4rWO4XwCI9/EK9APlk+K
 CXIAn3akAol+pBE12guiAz+krXytzV1T
 =w3u5
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Re: [OT] Tomcat dies suddenly

2010-02-14 Thread Carl

Chris,

You are evil.

Thanks,

Carl
- Original Message - 
From: Christopher Schultz ch...@christopherschultz.net

To: Tomcat Users List users@tomcat.apache.org
Sent: Sunday, February 14, 2010 4:21 PM
Subject: Re: [OT] Tomcat dies suddenly



-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Anthony,

On 2/14/2010 1:01 AM, anthonyvie...@gmail.com wrote:

CentOS, Sun JVM, IBM Hardware = 100% Uptime


100%, eh? Care to make a wager?

- -chris
-BEGIN PGP SIGNATURE-
Version: GnuPG v1.4.10 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAkt4aXQACgkQ9CaO5/Lv0PDdqgCdFW5C4rWO4XwCI9/EK9APlk+K
CXIAn3akAol+pBE12guiAz+krXytzV1T
=w3u5
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Re:[OT] Tomcat dies suddenly

2010-02-13 Thread André Warnier



(re relativistic gamma rays, dark energy and all that stuff).


I'll take that back quickly before Chuck does me in. Gamma rays being 
photons, they are always relativistic. Read relativistic protons instead.


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RE: Re:[OT] Tomcat dies suddenly

2010-02-13 Thread Caldarale, Charles R
 From: André Warnier [mailto:a...@ice-sa.com]
 Subject: Re:[OT] Tomcat dies suddenly
 
 Read relativistic protons instead.

Now you're talking about something that can do real damage.  (Unlike a WIMP, 
which seems to be too shy to even show up at the party.)

BTW, I was thinking that since the T105 and T110 were both from the same vendor 
and use the same case, there might be some common design factor causing these 
mysterious segfaults - but they're radically different on the inside (e.g., AMD 
vs. Intel, memory speed and type, slots).  Not much in common, except perhaps 
the power supply.

 - Chuck


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Re: [OT] Tomcat dies suddenly

2010-02-13 Thread André Warnier

Caldarale, Charles R wrote:

From: André Warnier [mailto:a...@ice-sa.com]
Subject: Re:[OT] Tomcat dies suddenly

Read relativistic protons instead.


Now you're talking about something that can do real damage.  (Unlike a WIMP, 
which seems to be too shy to even show up at the party.)

BTW, I was thinking that since the T105 and T110 were both from the same vendor 
and use the same case, there might be some common design factor causing these 
mysterious segfaults - but they're radically different on the inside (e.g., AMD 
vs. Intel, memory speed and type, slots).  Not much in common, except perhaps 
the power supply.

Since we must have by now exhausted all the normal  causes of such 
errors, maybe we should recommend
a) a visual inspection of the systems, to see if there are any pinsize 
holes, or paint flaking off or so
b) the installation of a surveilance camera, to check if the SegFaults 
are synchronous with any visible phenomenon (sparks, Cerenkow radiation, 
etc.)

c) moving the systems to the basement ?




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RE: [OT] Tomcat dies suddenly

2010-02-13 Thread Caldarale, Charles R
 From: André Warnier [mailto:a...@ice-sa.com]
 Subject: Re: [OT] Tomcat dies suddenly
 
 Since we must have by now exhausted all the normal  causes of such
 errors, maybe we should recommend
 a) a visual inspection of the systems, to see if there are any pinsize
 holes, or paint flaking off or so
 b) the installation of a surveilance camera, to check if the SegFaults
 are synchronous with any visible phenomenon (sparks, Cerenkow
 radiation, etc.)
 c) moving the systems to the basement ?

d) exorcism?

 - Chuck


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Re: Re:[OT] Tomcat dies suddenly

2010-02-13 Thread Carl

Chuck,

The cases and even power supplies are very different.  The T105 is destined 
to be a backup server and the T110 is supposed to be the front line guy.


Thanks,

Carl

- Original Message - 
From: Caldarale, Charles R chuck.caldar...@unisys.com

To: Tomcat Users List users@tomcat.apache.org
Sent: Saturday, February 13, 2010 4:38 PM
Subject: RE: Re:[OT] Tomcat dies suddenly



From: André Warnier [mailto:a...@ice-sa.com]
Subject: Re:[OT] Tomcat dies suddenly

Read relativistic protons instead.


Now you're talking about something that can do real damage.  (Unlike a 
WIMP, which seems to be too shy to even show up at the party.)


BTW, I was thinking that since the T105 and T110 were both from the same 
vendor and use the same case, there might be some common design factor 
causing these mysterious segfaults - but they're radically different on 
the inside (e.g., AMD vs. Intel, memory speed and type, slots).  Not much 
in common, except perhaps the power supply.


- Chuck


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Re: [OT] Tomcat dies suddenly

2010-02-13 Thread André Warnier

Caldarale, Charles R wrote:

From: André Warnier [mailto:a...@ice-sa.com]
Subject: Re: [OT] Tomcat dies suddenly

Since we must have by now exhausted all the normal  causes of such
errors, maybe we should recommend
a) a visual inspection of the systems, to see if there are any pinsize
holes, or paint flaking off or so
b) the installation of a surveilance camera, to check if the SegFaults
are synchronous with any visible phenomenon (sparks, Cerenkow
radiation, etc.)
c) moving the systems to the basement ?


d) exorcism?

That makes me think about something, specially since Carl mentioned that 
there are children involved.


Maybe we should also investigate if the SegFaults are simultaneous with 
anyone specific entering the room where the servers are.  Like someone 
bringing coffee or pizzas or so ? I swear that I have seen some 
long-running applications mysteriously fail as soon as some specific 
end-users approached a keyboard.  They did not have to even touch the 
keyboard for this to happen.

There are programmers like that too, for that matter.

Surprise visits by big bosses are also among well-known triggering 
factors, as are demos to new users.  But I think in this case we can 
eliminate the first one, since the problem happens several times per 
day.  After the first couple of visits, the surprise element would tend 
to disappear.



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RE: [OT] Tomcat dies suddenly

2010-02-13 Thread Caldarale, Charles R
 From: André Warnier [mailto:a...@ice-sa.com]
 Subject: Re: [OT] Tomcat dies suddenly
 
 Maybe we should also investigate if the SegFaults are simultaneous with
 anyone specific entering the room where the servers are.

Ah yes, the old nylon underwear problem...

Or the pizza with plutonium toppings.

 - Chuck


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Re: [OT] Tomcat dies suddenly

2010-02-13 Thread Jorge Medina
There have been 144 messages on this thread...and you have spent already
months trying to solve the problem...I think it will be more cost effective
to replace the boxes, run a standard JVM from Sun..and close this
thread!

On Sat, Feb 13, 2010 at 6:11 PM, Caldarale, Charles R 
chuck.caldar...@unisys.com wrote:

  From: André Warnier [mailto:a...@ice-sa.com]
  Subject: Re: [OT] Tomcat dies suddenly
 
  Maybe we should also investigate if the SegFaults are simultaneous with
  anyone specific entering the room where the servers are.

 Ah yes, the old nylon underwear problem...

 Or the pizza with plutonium toppings.

  - Chuck


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Re: [OT] Tomcat dies suddenly

2010-02-13 Thread anthonyvierra
CentOS, Sun JVM, IBM Hardware = 100% Uptime

On Sat, Feb 13, 2010 at 9:44 PM, Jorge Medina
cerebrotecnolog...@gmail.comwrote:

 There have been 144 messages on this thread...and you have spent already
 months trying to solve the problem...I think it will be more cost effective
 to replace the boxes, run a standard JVM from Sun..and close this
 thread!

 On Sat, Feb 13, 2010 at 6:11 PM, Caldarale, Charles R 
 chuck.caldar...@unisys.com wrote:

   From: André Warnier [mailto:a...@ice-sa.com]
   Subject: Re: [OT] Tomcat dies suddenly
  
   Maybe we should also investigate if the SegFaults are simultaneous with
   anyone specific entering the room where the servers are.
 
  Ah yes, the old nylon underwear problem...
 
  Or the pizza with plutonium toppings.
 
   - Chuck
 
 
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 received
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