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
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[email protected]
www.univ-bordeaux.fr/tic
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Practical WebObjects - for developers who want to increase their
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