is such case (heavy load) compared to tomcat?
thanks and regards
Prince
- Original Message -
From: Angus Mezick
To: Tomcat Users List
Sent: Tuesday, August 05, 2003 6:37 PM
Subject: RE: how to suppor 3 concurrent users
With that many users you are going to HAVE to cluster if for no other
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To: Tomcat Users List [EMAIL PROTECTED]
Sent: Tuesday, August 05, 2003 6:37 PM
Subject: RE: how to suppor 3 concurrent users
With that many users you are going to HAVE to cluster if for no other
reason than to provide backup for system maintanence. As to how many,
the answer is it depends
?
--Angus
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 05, 2003 10:25 AM
To: Tomcat Users List
Subject: RE: how to suppor 3 concurrent users
Sorry for being thick but Im a bit confused as to when you are doing
anything with the sessions? If I
[mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 05, 2003 10:52 AM
To: Tomcat Users List
Subject: Re: how to suppor 3 concurrent users
I have always wondered how serious load balancing was done :)
Is this technique documented anywhere?
I would love to read up on it.
Thanks
Angus Mezick
Angus Mezick [EMAIL PROTECTED]
05/08/2003 15:11
Please respond to Tomcat Users List
To: Tomcat Users List [EMAIL PROTECTED]
cc:
Subject:RE: how to suppor 3 concurrent users
Doesn't seem to have that much of an effect. I guess I should profile
it though. I don't
, August 05, 2003 9:17 AM
To: 'Tomcat Users List'
Subject: RE: how to suppor 3 concurrent users
I always wondered about how high-profile sites like Ebay and Amazon
updated their systems because they never seem to place
messages at their
sites regarding system downtime for routine
If you use Resin/J:Rockit/NewISys 2100, you can do at least 4,000
cocurent users w/ sub second response time. (test your app w/ free
DiselTest - part of Jasic and linked on basicPortal.com, other links
there to)
NewIsys is a 1U.
A 19 rack can hold 40. You need 3-4 racks.
He.net charges $400 per
: RE: how to suppor 3 concurrent users
Sorry for being thick but Im a bit confused as to when you are doing
anything with the sessions? If I make a request to one
server, then go on
to another for the next request, how does server 2 get my
session from
server 1 without server 1
any change is made to it?
Pete
Angus Mezick [EMAIL PROTECTED]
05/08/2003 15:11
Please respond to Tomcat Users List
To: Tomcat Users List [EMAIL PROTECTED]
cc:
Subject:RE: how to suppor 3 concurrent users
Doesn't seem to have that much of an effect
Angus,
doesnt using a shared jdbc based session manager slow the whole thing down
a lot? Why dont you just use session persistence?
Pete
terabytes of disk while
only have 2 GB of memory. Seems to be an easy trade.
--Angus
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 05, 2003 9:40 AM
To: Tomcat Users List
Subject: RE: how to suppor 3 concurrent users
Angus
Oh OK cool so it is how I thought - presumably you dont use the session
very much (in terms of sending stuff to it) or else there would be one
serious amount of db work!
Pete
With that many users you are going to HAVE to cluster if for no other
reason than to provide backup for system maintanence. As to how many,
the answer is it depends on the hardware you are going to use and the
types of load your webapp puts on the system. When you say 30k
concurrent users do you
I would also do a serious reality check on the 30,000 concurrent users
number. After going through something like the drill below you will find
that you have architected yourself one big system. The sticker shock
alone might be enough for people to go back and seriously reconsider their
numbers.
: Friday, August 02, 2002 9:21 AM
To: Tomcat Users List
Subject: Re: how to suppor 3 concurrent users
hi Angus,
from ur reply what i understand is, first I have to develop
the application
(with maximum tuning possible from scripting side) and the
deploy it on a
server and load test
but I had have 2 or 3 terabytes of disk while
only have 2 GB of memory. Seems to be an easy trade.
--Angus
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 05, 2003 9:40 AM
To: Tomcat Users List
Subject: RE: how to suppor 3 concurrent users
individually while the other nodes support user requests, or
perhaps it's done differently. Can you explain, thanks!
Raffi
-Original Message-
From: Angus Mezick [mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 05, 2003 9:07 AM
To: Tomcat Users List
Subject: RE: how to suppor 3 concurrent users
build a model like
- each user is on the site for n Minutes
- each user makes n requests
- the mean time between to page requests is n seconds
- each page request creates n http requests
- specify the average size for an http request
- specify the average ratio of request/db access
.
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