Hi Chuck
All instances are setup with -Xms64m -Xmx512m (about 10G used for 250
instances running and 32G RAM on each server ). I dont really know
about the concurrent sessions, I would say 50 or 100 on a single
server. And I do not use dispatcher. I use default WO configurations.
No i'm not using Wonder's version as my WO (5.3 version) configuration
files are generated by a shell script. I'll give a try to Wonder version
Chuck Hill a écrit :
On Feb 26, 2010, at 10:42 AM, Caristan William wrote:
I'm not about to run 1000 instances on a
single prod server. But we indeed have about 1000 prod instances
dispatched on 3 servers.
That is impressive. Can you release any other information on this? How
much memory is allocated to each? How many concurrent sessions does
each serve (on average)? Are you using concurrent request dispatching?
Are you using JavaMonitor to manage these? If so, are you using
Wonder's JavaMonitor? Anjo added some features to help manage large
deployments. I am curious if you are finding them useful.
And I already faced 2 default limit problems
(64 for apache adaptor and 255 for -WOWorkerThreadCountMax wotaskd
parameter). So I'd would like to be aware about any other limit
problem, and not to have to solve it when already in emergency. Then I
would like to check if it's possible to have lets say 600 instance in a
single server.
It should be, if you have enough RAM. The other bottle neck is
probably I/O to the database.
About your link, I also found this page, and
already tried /etc/rc.common, no success. I didn't tried WindowServer
wrapper as wotaskd is launched from system boot, not from GUI; So I was
not sure about that. I'll give it a try antway.
I tried this wrapper not on widowServer but on /sbin/launchd and ... I
broke my test server, does not boot anymore :/
Ouch! :-)
Chuck
Timo Hoepfner a écrit :
Hi,
about 1000 instances seems to be a lot, are you sure you are on the
right track with this deployment?
Here's an older hint. Some infos in the comments, especially the ones
at the very bottom might still be helpful:
http://www.macosxhints.com/article.php?story=200311151254441
Timo
Am 26.02.2010 um 15:22 schrieb Caristan William:
Hi
I'm trying to run about one thousand webobjects instances on Mac OSX
Server 10.5.3.
Then i recompiled apache adaptor and setup wotaskd with
-WOWorkerThreadCountMax.
I have
root# sysctl -n kern.maxproc
2500
root# sysctl -n kern.maxprocperuid
1000
But I have a last problem with max user processes at system level for
appserver user.
I setup ulimit -u in
/System/Library/WebObjects/JavaApplications/wotaskd.woa/wotaskd wich is
run as appserver user. But this user is not allowed to setup more than
ulimit -u 532:
root# sudo -u appserver ulimit -u 533
/usr/bin/ulimit: line 4: ulimit: max user processes: cannot modify
limit: Operation not permitted
root# sudo -u appserver ulimit -u 532
root#
It's possible in current shell if it's allowed by root nefore:
root# ulimit -u 1024
root# sudo -u appserver ulimit -u 1024
root#
Does anyone know to setup system to launch wotaskd with such ulimit -u?
Thanks.
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Cordialement,
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Cellule Bases de Données & Exploitation
CARISTAN William
Administrateur BdD
tél. : 33 (0)5 4000 60 11
[email protected]
www.univ-bordeaux.fr/tic
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