Re: [OT] tomcat slowing down

2012-05-16 Thread André Warnier

Mikolaj Rydzewski wrote:

On 16.05.2012 17:11, André Warnier wrote:

Mikolaj Rydzewski wrote:

It looks you have some ajax requests


Just curious : how do you see that from the OP's stack trace ?


Just a guess, maybe I'm wrong:

org.ajax4jsf.framework.ajax.AjaxViewRoot.processEvents(AjaxViewRoot.java:180) 


at
org.ajax4jsf.framework.ajax.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:158) 


at
org.ajax4jsf.framework.ajax.AjaxViewRoot.processDecodes(AjaxViewRoot.java:274) 





Oh. I always thought that Ajax was purely a client-side thing (Asynchronous 
Javascript etc..).
Maybe this is only a name coincidence ?
From a server point of view, there should not be anything special distinguishing 
Ajax-triggered requests from others, not so ?
Of course, perhaps one has one of these nifty real-time Ajax-driven popups which poll the 
server every 0.1 second for an update to some graphic gimmick..
Which would of course provide some clue as to a gradual slowdown of some webserver, as the 
poor thing struggles to keep up.

Mere loose and unfounded speculation of course, on the base of at best flimsy 
evidence.
Let's wait to see what the real data says.





-
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org



RE: [OT] tomcat slowing down

2012-05-16 Thread Caldarale, Charles R
 From: André Warnier [mailto:a...@ice-sa.com] 
 Subject: Re: [OT] tomcat slowing down

 I always thought that Ajax was purely a client-side thing

It may be so in this case as well - the stack traces include use of HttpClient, 
so the webapp may actually be hung up waiting on some external resource.

 - 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.


-
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org



Re: [OT] tomcat slowing down

2012-05-16 Thread Christopher Schultz
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

André,

On 5/16/12 11:43 AM, André Warnier wrote:
 Oh. I always thought that Ajax was purely a client-side thing 
 (Asynchronous Javascript etc..). Maybe this is only a name
 coincidence ?

There are libraries that make accepting Ajax requests easier (e.g.
parsing XML, unpacking JSON objects, etc.). So one could call this
Ajax support I suppose.

- -chris
-BEGIN PGP SIGNATURE-
Version: GnuPG/MacGPG2 v2.0.17 (Darwin)
Comment: GPGTools - http://gpgtools.org
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAk+z2EQACgkQ9CaO5/Lv0PB1ZQCfbRIMEfGs9Wju056OeSUuMXt+
ZHMAoI42R6EA0q37uXqcp5fS8QCyQMKw
=b92R
-END PGP SIGNATURE-

-
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org



Re: [OT] tomcat slowing down

2012-05-16 Thread André Warnier

Christopher Schultz wrote:

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

André,

On 5/16/12 11:43 AM, André Warnier wrote:
Oh. I always thought that Ajax was purely a client-side thing 
(Asynchronous Javascript etc..). Maybe this is only a name

coincidence ?


There are libraries that make accepting Ajax requests easier (e.g.
parsing XML, unpacking JSON objects, etc.). So one could call this
Ajax support I suppose.

I was looking at Wicket in Wikipedia, and although much of that is unfamiliar to me, it 
sounds like there might indeed be DHTML and Ajax components involved.
Now I also can't imagine that someone would release an application that brings a server 
down to its knees with 10 users, but maybe some misconfiguration can achieve that.


-
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org



Re: [OT] tomcat slowing down

2012-05-16 Thread Pid
On 16/05/2012 18:01, André Warnier wrote:
 Christopher Schultz wrote:
 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1

 André,

 On 5/16/12 11:43 AM, André Warnier wrote:
 Oh. I always thought that Ajax was purely a client-side thing
 (Asynchronous Javascript etc..). Maybe this is only a name
 coincidence ?

 There are libraries that make accepting Ajax requests easier (e.g.
 parsing XML, unpacking JSON objects, etc.). So one could call this
 Ajax support I suppose.

 I was looking at Wicket in Wikipedia, 

That sir, is because you are not an Englishman.  However, I can assure
you, that we are very familiar with the wicket.  What ho'!


p

 and although much of that is
 unfamiliar to me, it sounds like there might indeed be DHTML and Ajax
 components involved.
 Now I also can't imagine that someone would release an application that
 brings a server down to its knees with 10 users, but maybe some
 misconfiguration can achieve that.
 
 -
 To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
 For additional commands, e-mail: users-h...@tomcat.apache.org
 


-- 

[key:62590808]



signature.asc
Description: OpenPGP digital signature


RE: [OT] tomcat slowing down

2012-05-16 Thread Caldarale, Charles R
 From: Pid [mailto:p...@pidster.com] 
 Subject: Re: [OT] tomcat slowing down

  I was looking at Wicket in Wikipedia, 

 That sir, is because you are not an Englishman.  However, I can assure
 you, that we are very familiar with the wicket.  What ho'!

Howzat?

 - 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.


-
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org



Re: [OT] tomcat slowing down

2012-05-16 Thread André Warnier

Pid wrote:

On 16/05/2012 18:01, André Warnier wrote:

Christopher Schultz wrote:

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

André,

On 5/16/12 11:43 AM, André Warnier wrote:

Oh. I always thought that Ajax was purely a client-side thing
(Asynchronous Javascript etc..). Maybe this is only a name
coincidence ?

There are libraries that make accepting Ajax requests easier (e.g.
parsing XML, unpacking JSON objects, etc.). So one could call this
Ajax support I suppose.

I was looking at Wicket in Wikipedia, 


That sir, is because you are not an Englishman.  However, I can assure
you, that we are very familiar with the wicket.  What ho'!


Well exactly.  The only familiarity I previously had with the word wicket, was as some 
bit of wood carefully balanced on top of two other bits of wood, with some white-attired 
gentleman armed with another (wider) piece of wood in front, seemingly very anxious not to 
let another bloke viciously toss the first bit of wood off the second ones by means of 
something looking like a bigger golf ball.  And of course as a term in the mysterious kind 
of point-scoring ritual that goes with the same, along with other keywords like inning, 
not outs and such.


So, in my mind - before I consulted Wikipedia - I had this picture of some kind of graphic 
browser applet, mostly popular in the UK and Indian markets, which one could use to 
superimpose the lastest results of such games worldwide upon one's professional workspace, 
with real-time updates.
But then, from previous experience watching the game on TV, I still could not quite figure 
out how even the real-time updates of 10 simultaneous tournaments for tens of users, could 
possibly overwhelm a Tomcat server, given the apparent pace of said game.


So that is why I checked Wikipedia, to see if my understanding was sufficient.
And to my utter relief, I realised it wasn't, and that the word wicket also seemed to 
cover some client-server software architectural feature, where indeed data may be 
exchanged by means of Ajax calls and such, but the data in question could be related to 
faster-moving matters, thus validating my initial suspicions, after a fashion.


-
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org