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On 10/08/2010 19:53, David Conde wrote:
<blockquote
cite="mid:AANLkTinukYFeKg5-eBQ8DBFJKx_yZg-aoXQu5ikCDF9e@mail.gmail.com"
type="cite">Just to let people know, I've worked around this by
only creating one SessionConfig object and caching it i.e
"StatelessKnowledgeSession ksession =
kbase.newStatelessKnowledgeSession((KnowledgeSessionConfiguration)getSessionConfig());".
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<div>What seemed to be happening was ChainedProperties was trying
Classloader lookups that were very slow when running in an OSGi
environment.
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</div>
<div>Also with how the OSGi bundles are built the org.drools
package is split and it makes it difficult to load up certain
classes. I ended up having to use reflection to load up the
SessionConfiguration class from a specific bundle. Maybe it's
to do with how I'm importing the drools bundles into my
project but it's one to watch out for if your using drools
with OSGi.</div>
</div>
</blockquote>
in general you shouldn't be looking up concrete implementations,
just using what the factory services provide in drools-api; so the
split packages shouldn't impact. I made a few of the services
avaiable as osgi factory services, see docs for more details.<br>
<br>
Mark<br>
<blockquote
cite="mid:AANLkTinukYFeKg5-eBQ8DBFJKx_yZg-aoXQu5ikCDF9e@mail.gmail.com"
type="cite">
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<div><br>
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<div>Thanks,</div>
<div>Dave <br>
<br>
<div class="gmail_quote">On 10 August 2010 17:46, David Conde
<span dir="ltr"><<a moz-do-not-send="true"
href="mailto:dconde@calomtech.com">dconde@calomtech.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;">
ChainedProperties lives
in org.drools.util.ChainedProperties and is created in
SessionConfiguration(). The call is called
during StatelessKnowledgeSession ksession =
kbase.newStatelessKnowledgeSession();.
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<div class="h5">
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<br>
<div class="gmail_quote">
On 10 August 2010 17:36, Pavel Tavoda <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:pavel.tavoda@gmail.com"
target="_blank">pavel.tavoda@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt
0pt 0pt 0.8ex; border-left: 1px solid rgb(204,
204, 204); padding-left: 1ex;">
Can't you avoid using ChainedProperties, what is
it? Can you send<br>
piece of code where you create session?<br>
<br>
Pavel<br>
<br>
<br>
2010/8/10 David Conde <<a
moz-do-not-send="true"
href="mailto:dconde@calomtech.com"
target="_blank">dconde@calomtech.com</a>>:<br>
<div>
<div>> Hi Pavel,<br>
> I've changed it over to use a stateless
session and I'm seeing the<br>
> same behavior. I've done some debugging
and it seems to be very slow loading<br>
> up the SessionConfiguration due to all of
the loading that happens in<br>
> ChainedProperties.<br>
> Thanks,<br>
> Dave<br>
><br>
> On 10 August 2010 13:53, Pavel Tavoda
<<a moz-do-not-send="true"
href="mailto:pavel.tavoda@gmail.com"
target="_blank">pavel.tavoda@gmail.com</a>>
wrote:<br>
>><br>
>> Interesting. Normally it should be
fast. Try to change your patter and<br>
>> load binary compiled serialized
package from disk. You can find it in<br>
>> documentation.<br>
>> Also consider using stateless
session. Do you really need stateful<br>
>> session?<br>
>><br>
>> Pavel<br>
>><br>
>> 2010/8/9 David Conde <<a
moz-do-not-send="true"
href="mailto:dconde@calomtech.com"
target="_blank">dconde@calomtech.com</a>>:<br>
>> > Is it possible that this might
be invoking the compiler when a session<br>
>> > is<br>
>> > created? I have all of the init
code in the service start call and<br>
>> > stored as<br>
>> > members of the service for reuse
but I must create a new knowledge<br>
>> > session<br>
>> > for each run.<br>
>> > Any ideas?<br>
>> > Thanks,<br>
>> > Dave<br>
>> ><br>
>> > ---------- Forwarded message
----------<br>
>> > From: David Conde <<a
moz-do-not-send="true"
href="mailto:dconde@calomtech.com"
target="_blank">dconde@calomtech.com</a>><br>
>> > Date: 9 August 2010 11:17<br>
>> > Subject: Re: [rules-users] CPU
Spike creating a StatefulKnowledgeSession<br>
>> > using OSGi<br>
>> > To: Rules Users List <<a
moz-do-not-send="true"
href="mailto:rules-users@lists.jboss.org"
target="_blank">rules-users@lists.jboss.org</a>><br>
>> ><br>
>> ><br>
>> > The line that it spikes on
is StatefulKnowledgeSession ksession =<br>
>> >
kbase.newStatefulKnowledgeSession();.<br>
>> > Cheers,<br>
>> > Dave<br>
>> ><br>
>> > On 9 August 2010 11:09, Pavel
Tavoda <<a moz-do-not-send="true"
href="mailto:pavel.tavoda@gmail.com"
target="_blank">pavel.tavoda@gmail.com</a>>
wrote:<br>
>> >><br>
>> >> Is it session creation or
rule compilation?<br>
>> >><br>
>> >> Pavel<br>
>> >><br>
>> >> 2010/8/9 David Conde <<a
moz-do-not-send="true"
href="mailto:dconde@calomtech.com"
target="_blank">dconde@calomtech.com</a>>:<br>
>> >> > Good Morning,<br>
>> >> > I now have drools
running on the Spring DM-Server but I am
seeing a<br>
>> >> > CPU<br>
>> >> > spike when creating
a StatefulKnowledgeSession. I've tested this<br>
>> >> > outside<br>
>> >> > of<br>
>> >> > an OSGi environment and
I don't see the spike. Does anyone know any<br>
>> >> > settings<br>
>> >> > that I can change that
might make this go away?<br>
>> >> > Thanks,<br>
>> >> > Dave<br>
>> >> ><br>
>> >> > --<br>
>> >> > David Conde<br>
>> >> > CTO Calom Technologies<br>
>> >> ><br>
>> >> ><br>
>> >> >
_______________________________________________<br>
>> >> > rules-users mailing
list<br>
>> >> > <a
moz-do-not-send="true"
href="mailto:rules-users@lists.jboss.org"
target="_blank">rules-users@lists.jboss.org</a><br>
>> >> > <a
moz-do-not-send="true"
href="https://lists.jboss.org/mailman/listinfo/rules-users"
target="_blank">https://lists.jboss.org/mailman/listinfo/rules-users</a><br>
>> >> ><br>
>> >> ><br>
>> >><br>
>> >>
_______________________________________________<br>
>> >> rules-users mailing list<br>
>> >> <a moz-do-not-send="true"
href="mailto:rules-users@lists.jboss.org"
target="_blank">rules-users@lists.jboss.org</a><br>
>> >> <a moz-do-not-send="true"
href="https://lists.jboss.org/mailman/listinfo/rules-users"
target="_blank">https://lists.jboss.org/mailman/listinfo/rules-users</a><br>
>> ><br>
>> ><br>
>> ><br>
>> ><br>
>> ><br>
>> ><br>
>> ><br>
>> ><br>
>> >
_______________________________________________<br>
>> > rules-users mailing list<br>
>> > <a moz-do-not-send="true"
href="mailto:rules-users@lists.jboss.org"
target="_blank">rules-users@lists.jboss.org</a><br>
>> > <a moz-do-not-send="true"
href="https://lists.jboss.org/mailman/listinfo/rules-users"
target="_blank">https://lists.jboss.org/mailman/listinfo/rules-users</a><br>
>> ><br>
>> ><br>
>><br>
>>
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target="_blank">rules-users@lists.jboss.org</a><br>
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href="https://lists.jboss.org/mailman/listinfo/rules-users"
target="_blank">https://lists.jboss.org/mailman/listinfo/rules-users</a><br>
><br>
><br>
><br>
>
_______________________________________________<br>
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> <a moz-do-not-send="true"
href="mailto:rules-users@lists.jboss.org"
target="_blank">rules-users@lists.jboss.org</a><br>
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href="https://lists.jboss.org/mailman/listinfo/rules-users"
target="_blank">https://lists.jboss.org/mailman/listinfo/rules-users</a><br>
><br>
><br>
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-- <br>
<div class="im"><br>
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