Can please anybody verify if this is a bug in Jonas/Jeremie or in our code?
The fact that it doesn't happen with RMI points more towrds Jeremie, but in
project of our size everything is possible 8-).
Regards,
Miroslav Halas
Software Architect
Compuware Corp.
15305 Dallas Parkway Suite 900
Addison, TX 75001
phone: 9720-960-0960
fax: 972-960-8489
email: [EMAIL PROTECTED]
-----Original Message-----
From: Halas, Miroslav [mailto:[EMAIL PROTECTED]]
Sent: Sunday, December 10, 2000 5:31 AM
To: [EMAIL PROTECTED]
Cc: Nolen, Randy
Subject: RE: Bug in Jonas/Jeremie - Increasing Thread count
With more testing this weekend I have discovered following.
If I run the Jonas with Jeremie on a computer which is not connected to the
network or with network interface disabled, the thread count doesn't
increase and remains constant (Jonas + web server + 60 beans starts with 92
threads). If I am connected to the network and I start reading beans from
the database, the thread count starts increasing (Jonas + web server + 60
beans starts with 101 threads) This was verified on two different computers
(Dell Latitude laptop with 3Com adapter running W2K Pro with SP1 and Micron
Millenia Max GS Desktop with 3Com and Kingston adapters running W2K Advanced
Server with SP1).
Jonas with RMI runs just fine in both cases.
Does this sounds like problem with Jonas/Jeremie or our configuration?
Regards,
Miro Halas
-----Original Message-----
From: Halas, Miroslav [mailto:[EMAIL PROTECTED]]
Sent: Friday, December 08, 2000 6:07 PM
To: [EMAIL PROTECTED]
Cc: Nolen, Randy
Subject: Bug in Jonas/Jeremie - Increasing Thread count
Looking hrough the Jonas mailing list I coulnd't find any similar issue so I
want to ask about situation we have discovered.
This week we switched from Jonas 2.0 to Jonas 2.1.1 and then to Jonas 2.2.2
running on JEREMIE
Sice then we are seeing this problem. Every time we call to Jons to retrieve
some entity beans, the thread count for the Jonas process keeps increasing.
We are using CMP and are running on Windows 2000. We have tried both, JDK
1.2.2.006 and JDK 1.3.0.001 with no difference. To see number of thread we
use Windows NT Task Manager Processes tab with thread count enabled.
This problem doesn't occur when using Jonas 2.2.2 using RMI.
The numbers I list here are thread counts from the comparison test we did
(60 beans deployed)
Jonas 2.0 using JEREMIE Jonas 2.1.1/2.2.2 using JEREMIE
Jonas 2.1.1/2.2.2 using RMI
Initial 23
~102 105
Retrieved
~10 beans 23 ~142
105
+ ~24 beans 23 ~187
105
+~8 beans 23 ~199
105
+~40beans 23 ~264
105
+~900beans 23 ~1400
105
One symtom of the problem is that it takes a long time to shutdown or kill
Jonas since all the thread needs to be destroyed. Another symptom is the
impact on performance (about 50% slower).
>From this test we guess that the problem is not in Jonas itself but in
JEREMIE (whatever was changed since version 2.0). Can please anybody verify
if you saw similar problems and suggest what can we do to solve it?
Regards,
Miroslav Halas
Software Architect
Compuware Corp.
15305 Dallas Parkway Suite 900
Addison, TX 75001
phone: 9720-960-0960
fax: 972-960-8489
email: [EMAIL PROTECTED]
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