Slow JMS Performance
Hi,
I'm using WL7.1 SP2 for a JMS based application. The database is SQLServer 2000,
and the JMS queues are persistent on this DB.
A client outside the Weblogic Server connects and fires lots of JMS messages to
the application. These messages are consumed by a pool of MDB's.
I don't think it's performing as well as it could.
For example, if I un-deploy my application, and fire 80,000 JMS messages at the
server, it takes around 10 minutes to persist these messages to the queues. All
good so far.
However, with the application deployed, the same number of messages take around
3 hours. The messages are consumed and processed as fast as they can be persisted
to the JMS queue. It's almost as if the messages are being synchronysly put on
the queue, ie. control is not returned to the client until the message is consumed
and processed. Unless I'm misunderstanding this, as soon as the messages is successfully
persisted to the JMS queue, control should be passed back to the client.
What I'd expect to happen is that the client would take around the same time post
the messages to the JMS Queue, ie. about 10 minutes - and the Pending Message
count to increase on the WL Server. Once all 80,000 messages were on the queue,
the Pending Message count would gradually go down as the messages were processed.
If I'm misunderstanding the way this works, please let me know. If you need any
further info, please ask and I'll post the answers.
Thanks,
Richard Kenyon
EDS - UK
No problem.
Performance is one of my hot-buttons, so I can't help but
noting that when it comes to queueing, or even asynchronous
invokes in general, slowing down the requester is often
goodness. It helps put "back-pressure" on the requesting
application, and so helps prevent a permanently growing
request backlog that the slower request handling
applications could never dig their way out of.
Tom
P.S. An updated version of the JMS performance
guide will be released in the next few weeks. It has
corrections, adds information about 8.1 features, and
expands information in a number of areas. I'll post
a link in the newsgroup when it comes out.
Richard Kenyon wrote:
> Thanks Tom,
>
> I suspected (and hoped!) that this would be the answer. I just needed
> clarification that I wasn't being stupid :-)
>
> I'll have a look at the Performance guide you mentioned.
>
> Thanks,
> Richard Kenyon
> EDS - UK
>
> "Tom Barnes" <[email protected]> wrote in message
> news:[email protected]...
>
>>When the application is active, it is forcing the server to do
>>other work as well. In effect you are sharing a limited
>>resource. Transactions (if applicable), your
>>application code, your application receives, etc.
>>In effect, the sender is slowed down because it
>>is competing with the MDB application for resources.
>>I suggest you read the JMS Performance
>>Guide white-paper on dev2dev.bea.com.
>>
>>Tom
>>
>>Richard Kenyon wrote:
>>
>>>Hi,
>>>
>>>I'm using WL7.1 SP2 for a JMS based application. The database is
>>
> SQLServer 2000,
>
>>>and the JMS queues are persistent on this DB.
>>>
>>>A client outside the Weblogic Server connects and fires lots of JMS
>>
> messages to
>
>>>the application. These messages are consumed by a pool of MDB's.
>>>
>>>I don't think it's performing as well as it could.
>>>
>>>For example, if I un-deploy my application, and fire 80,000 JMS messages
>>
> at the
>
>>>server, it takes around 10 minutes to persist these messages to the
>>
> queues. All
>
>>>good so far.
>>>
>>>However, with the application deployed, the same number of messages take
>>
> around
>
>>>3 hours. The messages are consumed and processed as fast as they can be
>>
> persisted
>
>>>to the JMS queue. It's almost as if the messages are being synchronysly
>>
> put on
>
>>>the queue, ie. control is not returned to the client until the message
>>
> is consumed
>
>>>and processed. Unless I'm misunderstanding this, as soon as the messages
>>
> is successfully
>
>>>persisted to the JMS queue, control should be passed back to the client.
>>>
>>>What I'd expect to happen is that the client would take around the same
>>
> time post
>
>>>the messages to the JMS Queue, ie. about 10 minutes - and the Pending
>>
> Message
>
>>>count to increase on the WL Server. Once all 80,000 messages were on the
>>
> queue,
>
>>>the Pending Message count would gradually go down as the messages were
>>
> processed.
>
>>>If I'm misunderstanding the way this works, please let me know. If you
>>
> need any
>
>>>further info, please ask and I'll post the answers.
>>>
>>>Thanks,
>>>Richard Kenyon
>>>EDS - UK
>>>
>>
>
>
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i read the BEA WebLogicTM JMS Performance Guide (July 31, 2003) and have some
questioon:
http://dev2dev.bea.com/products/wlserver/whitepapers/WL_JMS_Perform_GD.jsp
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Well, I must admit I was the primary author, so you will have
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Yuval Avni wrote:
> Hi All,
>
> i read the BEA WebLogicTM JMS Performance Guide (July 31, 2003) and have some
> questioon:
> http://dev2dev.bea.com/products/wlserver/whitepapers/WL_JMS_Perform_GD.jsp
> The only thing that indicates performance in the whole document is page 60 with
> the 3 examples.
> the problem there is that the arithmetic just doesn't work.
>
> All examples use a 100 Mbit link at 80% efficiency, which gives 10 mbyte/sec.
>
> Example 1: Messages of length 1Mbyte, 2 operations: (Calculating in IN Kbytes)
> 10000/(1000*2) = 5. Bravo !!!
>
> Example 2: Message length 50kbyte, 10 operations : 10000/(50*10) = 20. (Am i wrong
> ? not 160 as the document says). Out of each 10 operations, 1 is write (send)
> and 9 are receive (read) , so each subscriber gets 2 messages per second, and
> not 18 as the document says.
>
> Example 3: Message size 50kByte, 2 Operations (because of the Multicast). 10000/(50*2)
> = 100 , and not 800. each subscriber gets 50 per second, and not 89.
>
> The arithmetic is simple, you can do it on your fingers - no need for excel.
>
> Can you, Please
>
> 1. Explain the calculations
> 2. Supply real life, Measured statistics that DO take into consideration server
> power, Memory constraints and other trivial, but necessary, facts of life...
>
> Thanks yuval
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hi ,
I tried to find some numbers , about how much messages (in the diffrerent
categories - ptp or pub/sub) can a weblogic server
can stand - messages / sec , or some benchmarks,
but i didn't find any on the web ..
any one has any idea / link for such benchmark / performance test ???
I would appriciate any answer !
thanks!
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on dev2dev.bea.com. This guide has no numbers, but
it has general guidelines. Performance is not just
numbers...
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in all cases. The policy may have a dramatic effect
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Amir Ben-Amots wrote:
> hi ,
>
> I tried to find some numbers , about how much messages (in the diffrerent
> categories - ptp or pub/sub) can a weblogic server
> can stand - messages / sec , or some benchmarks,
>
> but i didn't find any on the web ..
>
> any one has any idea / link for such benchmark / performance test ???
>
> I would appriciate any answer !
>
> thanks!
>
>
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EXTREMELY SLOW XQUERY PERFORMANCE AND SLOW DOCUMENT INSERTS.
Resolution History
12-JUN-07 15:01:17 GMT
### Complete Problem Description ###
A test file is being used to do inserts into a schemaless XML DB. The file is inserted and then links are made to 4
different collection folders under /public. The inserts are pretty slow (about
15 per second and the file is small)but the xquery doesn't even complete when
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CREATE OR REPLACE TYPE "XDB"."RESOURCEARRAY" AS VARRAY(500) OF VARCHAR2(256);
PROCEDURE AddOrReplaceResource(
resourceUri VARCHAR2,
resourceContents SYS.XMLTYPE,
public_collections in ResourceArray
) AS
b BOOLEAN;
privateResourceUri path_view.path%TYPE;
resource_exists EXCEPTION;
pragma exception_init(resource_exists,-31003);
BEGIN
/* Store the document in private folder */
privateResourceUri := GetPrivateResourceUri(resourceUri);
BEGIN
b := dbms_xdb.createResource(privateResourceUri, resourceContents);
EXCEPTION
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END LOOP;
COMMIT;
END;
FUNCTION GetPrivateResourceUri(
resourceUri VARCHAR2
) RETURN VARCHAR2 AS
BEGIN
return concat('/ems/docs/',REGEXP_SUBSTR(resourceUri,'[a-zA-z0-9.-]*$'));
END;
### Info for XML Querying ###
Here is the XQuery and a sample of the output follows:
declare namespace c2ns="urn:xmlns:NCC-C2IEDM";
for $cotEvent in collection("/public")/event
return
<cotEntity>
{$cotEvent}
{for $d in collection("/public")/c2ns:OpContextMembership[c2ns:Entity/c2ns:EntityIdentifier
/c2ns:EntityId=xs:string($cotEvent/@uid)]
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$d
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start="2007-03-
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hae="0.0"/><de
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UPDATE
=======
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OS X Lion- Reinstall Mac OS X
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While creating Billing, system is very slow..performance issue
Hi,
While creating Billing, system is very slow. How can I debugg and provide the analysis where is the exact problem.
This is showing performance issue.
Waiting for kind response.
Best Regards,
Padhy
Moderator Message : Duplicate post locked.
Edited by: Vinod Kumar on May 12, 2011 10:59 AMhi,
Chk the links
http://help.sap.com/saphelp_nw04/helpdata/en/4a/e71f39488fee0ce10000000a114084/content.htm
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How may secondary indices I can create on the ODS?
Deletion of ODS index
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