On Nov 5, 2005, at 6:36 AM, James Cicenia wrote:
Sure made me laugh!
Anyway, our little startup company is growing and our Mac Mini has
been holding up remarkably. However, it does look so small and
lonely at the co-location facility! Well, because of politics, and
vendor alliances, I have to port the deployed app to IBM Xseries.
Of course, that does not address my freeze. My freeze has only
happened twice, so, I think it must be a deadlock and will take
measures to find it, ala, p. 92, etc.
My next question is briefly how do the multiple instances work?
Does the same session go to the same instance?
Yes, the instance number is either in the URL (look for /1/ /2/ etc)
or in a cookie named woinst
What manages that? The Apache adaptor?
yes.
If I go to jBoss, can I run multiple instances again?
That I don't know.
Finally, where does one enable concurrent request handling?
WOApplication:
public boolean allowsConcurrentRequestHandling()
Return whether or not concurrent request handling is allowed. This is
a cover method for the property WOAllowsConcurrentRequestHandling and
will return false by default.
Chuck
I need to gather a lot of this information and debug my current
module while it is in beta. It has been great champ up until this
latest issue.
- James Cicenia
On Nov 4, 2005, at 11:30 PM, Chuck Hill wrote:
I have to admit that I found Helge's comments pretty funny.
Perhaps that is why Apple is keeping WO around, the next iPod will
be an iSite. :-P
That said, I know of number of people successfully deploying lower
volume sites on Mac Minis. If the app is well written, tuned, and
not doing too much data intensive stuff you should be able to run
two or three instances comfortably, have concurrent request
handling enabled, and keep response times in the sub-second range.
Buy four and you can have one sharing web server and app hosting,
one covering the database, and two dedicated to serving apps.
That gives you probably at least 7 instances spread over 2.5 GB
(2.5 X 1GB machines). I'd be interested to see what kind of
throughput that could handle. I'd bet it would be pretty
impressive for the price.
Chuck
On Nov 4, 2005, at 4:35 PM, Miguel Arroz wrote:
Hi!
Well, I still have no experience (if everything goes well, I
will have in some monts) but a Mac Mini looks like a great server
for a startup company. Why?
1) It's cheap. You are starting, you do not want to spend 3000
bucks in hardware.
2) It's powerful. Ok, it's not an all-powerful dual G5 server,
but it can handle it for some time. With 1 GB of RAM, it should
be cool (there are hosting services offering 256 MB for your app,
so...).
3) It's cool to have redundancy. Again, for a startup, it's
hard to buy two xServes. It's not hard to buy 2 or even 3 minis.
Even with the OS X Server cost, it's still a lot cheap, and
offers redundancy (and load balance).
Of course, you will not run Apple Store on minis... but for a
startup company, why not? Mini can handle 1 or 2 requests a
second... again, some hosting services are offering WO deployment
on machines with G4 @ 1 Ghz... Mini rocks compared to that!
Yours
Miguel Arroz
On 2005/11/05, at 00:26, Helge Staedtler wrote:
perhaps you should just turn on *some* logging.
often just 5 scattered System.out.println's will give you an
idea of "where"
your app (and which app-instance) hangs. for this you need to
configure a
ppath where to write a logfile. and yeah, page 92 would be
indeed a good
start. :-)
mysql, mac mini with 1GB & tiger server... what kind of contest
are you
taking, "webobjects pico"? are iPod nanos an allowed/valid
target-hardware
for it or does my iPod shuffle also qualify? ;-)
regards,
helge
Am 04.11.2005 22:14 Uhr schrieb "James Cicenia" unter
<[EMAIL PROTECTED]>:
Well -
This has just started to happen now that we launched a new module
that is more transaction intensive. Our concurrent users have
also
been boosted. It is mySQL on a Mac Mini runing TigerOSX Server
with
1Gig. Don't laugh, amazing it has gone this far! I will try
turning
on another instance and see. There was nothing in my log files...
they just stopped with nothing out of the ordinary.
Anyway my next step is to move deployment to Linux. Any
suggestions
here? Redhat? JavaMonitor or jBoss? Licensing?
James Cicenia
On Nov 4, 2005, at 3:01 PM, Chuck Hill wrote:
On Nov 4, 2005, at 12:51 PM, Miguel Arroz wrote:
Any thoughts? Do I need to create multiple instances now? I
only
have one
instance currently.
We very rarely run a single instance.
Is there any advantage in running more than one instance on
the
same server?
Advantage? We only run a single instance if we are desperate for
memory! Running multiple instances allows you to process higher
loads (EOF is only single threaded within the instances) and
provides for much better availability. With only a single
instance, if you recycle it your site is out until it
restarts. As
single instance is only for memory starved machines and very low
traffic sites.
Chuck
--
Coming in 2006 - an introduction to web applications using
WebObjects and Xcode http://www.global-village.net/wointro
Practical WebObjects - for developers who want to increase their
overall knowledge of WebObjects or who are trying to solve
specific
problems. http://www.global-village.net/products/
practical_webobjects
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And we pray it would last" -- Apocalyptica, Life Burns!
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http://www.ipragma.com
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specific problems. http://www.global-village.net/products/
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problems. http://www.global-village.net/products/practical_webobjects
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