Yeah!!! I forgot that in this function I got not pooled db connection. So,
after I turned the pooling on it became 0 to 10 ms (on PIII 600 with 256
RAM) to invoke this function!!! Great indexes!!
So given these numbers I may throw away all these transaction attributes and
f.ex. always specify requires, since it doesnot affect perfomance...
Regards,
Savotchkin Egor
Web-technologies department
eMail: [EMAIL PROTECTED]
CJSC "SoftPro" - Billing systems
tel: (+7-095) 755-5655 (3135)
web-site: http://www.cboss.ru
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Robert Krueger
Sent: Saturday, December 16, 2000 2:57 PM
To: Orion-Interest
Subject: Re: ejb performance
At 14:28 16.12.00 , you wrote:
>Hi all!
> I made some tests to find out how transactions affect
> performance. I called
>a sessionless' ejb empty function with different transaction attributes. It
>turned out that call time mean was about 250 ms and it almost not changed
>depending on attributesn (Requires, supports, ...). So, does transactions
>have so little impact on perfomance???
> Why it takes about 250ms to invoke an empty function on ejb? Is
> it because
>ejb are distrubuted objects? What else could affect the ejb performance?
>
>Regards,
> Savotchkin Egor
you must have made a mistake 250ms is ridiculously slow. that's 4 calls per
sec!!!! please check your setup. this doesn't reflect our observations at
all. even with transactions that's way too slow or are you by any chance
using a 386 with 4 Meg RAM and a nojit VM ;-)).
regards,
robert
>Web-technologies department
>eMail: [EMAIL PROTECTED]
>CJSC "SoftPro" - Billing systems
>tel: (+7-095) 755-5655 (3135)
>web-site: http://www.cboss.ru
>
(-) Robert Kr�ger
(-) SIGNAL 7 Gesellschaft f�r Informationstechnologie mbH
(-) Br�der-Knau�-Str. 79 - 64285 Darmstadt,
(-) Tel: 06151 665401, Fax: 06151 665373
(-) [EMAIL PROTECTED], www.signal7.de
