You are viewing a plain text version of this content. The canonical link for it is here.
Posted to users@tapestry.apache.org by denis queffeulou <de...@air2web.com> on 2008/09/01 14:13:59 UTC
Re: T4.1.5 possible ognl cache problem
I've made another test with 4.1.5 which gives:
34,2% 90528 invocations on ExpressionCache.getCompiledExpression
25,4% 90300 invocations on Ognl.compileExpression
The test is made of 5 pages which returns XML and has run for about 2 hours.
I'm not sure to be able to test with 4.1.6 in the next days.
--
Denis
> Jesse, could you comment on this? I haven't tried profiling my apps, but the
> repeated calls to Ognl.compileExpression are worrisome if Denis got his
> numbers right. Are there any ognl-related changes in 4.1.6? Denis, maybe you
> could repeat your profiling with the latest snapshot, so hopefully something
> could still be done for this before 4.1.6 is released.
>
> Kalle
>
>
> On Thu, Aug 28, 2008 at 5:08 AM, denis queffeulou <
> denis.queffeulou@air2web.com> wrote:
>
>
>> Hi all,
>>
>> I'm making some profiling on an web app made with Tapestry 4.1.5 which
>> returns XML.
>> The result are disappointing as the average access time (got with JMeter)
>> is around 2000ms.
>>
>> In JProfiler, I found that OGNL expressions compilation uses 40% of
>> processing time.
>> As the JMeter script is requesting always the same page on the webapp, I'm
>> wondering why the expressions are always compiled. The cache seems not to be
>> used:
>>
>> 31896 invocations on ExpressionCache.getCompiledExpression
>> 31140 invocations on Ognl.compileExpression
>>
>> Is there someone to give me a clue to have better performances ?
>>
>> Thanks
>>
>> PS: sorry for double posting in dev list, I had some problems to subscribe
>> to users.
>> --
>> Denis Queffeulou
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>> For additional commands, e-mail: users-help@tapestry.apache.org
>>
>>
>>
>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
For additional commands, e-mail: users-help@tapestry.apache.org
Re: T4.1.5 possible ognl cache problem
Posted by denis queffeulou <de...@air2web.com>.
No, i've checked all my html (it's not a single html because we're using
lots of components).
--
denis
> On the page in your production application, you wouldn't be using #this
> anywhere in an OGNL expression, would you?
>
> Kalle
>
>
> On Wed, Sep 3, 2008 at 6:35 AM, denis queffeulou <
> denis.queffeulou@air2web.com> wrote:
>
>
>> I've done a simple webapp and the result is that compileExpression is
>> called 18 times but this doesn't increase. So for that webapp it is Ok.
>> Unfortunately, my main app still have the problem
>> (org.apache.tapestry.disable-caching is not set so takes its default value).
>> The last test I used is to request a single page and the number of calls to
>> compileExpression is the same as the request number (minus 1). It takes
>> about 16% cpu (it depends on the complexity of the page).
>>
>> I don't know what is so different between the two webapps that the ognl
>> cache (something not used directly by my code) seems not to be working.
>>
>> --
>> denis
>>
>>
>> are you sure, you have org.apache.tapestry.disable-caching set to false?
>>
>>> You
>>> can easily check this by looking at Tapestry's exception page.
>>>
>>> 2008/9/1 denis queffeulou <de...@air2web.com>
>>>
>>>
>>>
>>>
>>>> hmmmm,
>>>>
>>>> actually my WAR is a big application and I can't put it in Jira.
>>>> Don't you already have pages with some OGNL expression in test case ?
>>>> I look at the source code and see that a WeakHashMap but even with half
>>>> memory used, the cache hits are not numerous.
>>>>
>>>> Is there any configuration to tweak ? (I'm not in debug mode).
>>>> Perhaps it's not a bug.
>>>>
>>>> Anyway I've made a issue in Jira (2635).
>>>>
>>>>
>>>> Can you attach a War-File to a an issue in Jira? If so, I promise to
>>>> have
>>>>
>>>>
>>>>
>>>>> a
>>>>> look at it :).
>>>>>
>>>>> 2008/9/1 denis queffeulou <de...@air2web.com>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>> I've made another test with 4.1.5 which gives:
>>>>>>
>>>>>> 34,2% 90528 invocations on ExpressionCache.getCompiledExpression
>>>>>> 25,4% 90300 invocations on Ognl.compileExpression
>>>>>>
>>>>>> The test is made of 5 pages which returns XML and has run for about 2
>>>>>> hours.
>>>>>>
>>>>>> I'm not sure to be able to test with 4.1.6 in the next days.
>>>>>>
>>>>>> --
>>>>>> Denis
>>>>>>
>>>>>>
>>>>>> Jesse, could you comment on this? I haven't tried profiling my apps,
>>>>>> but
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>> the
>>>>>>> repeated calls to Ognl.compileExpression are worrisome if Denis got
>>>>>>> his
>>>>>>> numbers right. Are there any ognl-related changes in 4.1.6? Denis,
>>>>>>> maybe
>>>>>>> you
>>>>>>> could repeat your profiling with the latest snapshot, so hopefully
>>>>>>> something
>>>>>>> could still be done for this before 4.1.6 is released.
>>>>>>>
>>>>>>> Kalle
>>>>>>>
>>>>>>>
>>>>>>> On Thu, Aug 28, 2008 at 5:08 AM, denis queffeulou <
>>>>>>> denis.queffeulou@air2web.com> wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> Hi all,
>>>>>>>>
>>>>>>>> I'm making some profiling on an web app made with Tapestry 4.1.5
>>>>>>>> which
>>>>>>>> returns XML.
>>>>>>>> The result are disappointing as the average access time (got with
>>>>>>>> JMeter)
>>>>>>>> is around 2000ms.
>>>>>>>>
>>>>>>>> In JProfiler, I found that OGNL expressions compilation uses 40% of
>>>>>>>> processing time.
>>>>>>>> As the JMeter script is requesting always the same page on the
>>>>>>>> webapp,
>>>>>>>> I'm
>>>>>>>> wondering why the expressions are always compiled. The cache seems
>>>>>>>> not
>>>>>>>> to
>>>>>>>> be
>>>>>>>> used:
>>>>>>>>
>>>>>>>> 31896 invocations on ExpressionCache.getCompiledExpression
>>>>>>>> 31140 invocations on Ognl.compileExpression
>>>>>>>>
>>>>>>>> Is there someone to give me a clue to have better performances ?
>>>>>>>>
>>>>>>>> Thanks
>>>>>>>>
>>>>>>>> PS: sorry for double posting in dev list, I had some problems to
>>>>>>>> subscribe
>>>>>>>> to users.
>>>>>>>> --
>>>>>>>> Denis Queffeulou
>>>>>>>>
>>>>>>>> ---------------------------------------------------------------------
>>>>>>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>>>>>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>> ---------------------------------------------------------------------
>>>>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>>>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>> For additional commands, e-mail: users-help@tapestry.apache.org
>>
>>
>>
>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
For additional commands, e-mail: users-help@tapestry.apache.org
Re: T4.1.5 possible ognl cache problem
Posted by Kalle Korhonen <ka...@gmail.com>.
On the page in your production application, you wouldn't be using #this
anywhere in an OGNL expression, would you?
Kalle
On Wed, Sep 3, 2008 at 6:35 AM, denis queffeulou <
denis.queffeulou@air2web.com> wrote:
> I've done a simple webapp and the result is that compileExpression is
> called 18 times but this doesn't increase. So for that webapp it is Ok.
> Unfortunately, my main app still have the problem
> (org.apache.tapestry.disable-caching is not set so takes its default value).
> The last test I used is to request a single page and the number of calls to
> compileExpression is the same as the request number (minus 1). It takes
> about 16% cpu (it depends on the complexity of the page).
>
> I don't know what is so different between the two webapps that the ognl
> cache (something not used directly by my code) seems not to be working.
>
> --
> denis
>
>
> are you sure, you have org.apache.tapestry.disable-caching set to false?
>> You
>> can easily check this by looking at Tapestry's exception page.
>>
>> 2008/9/1 denis queffeulou <de...@air2web.com>
>>
>>
>>
>>> hmmmm,
>>>
>>> actually my WAR is a big application and I can't put it in Jira.
>>> Don't you already have pages with some OGNL expression in test case ?
>>> I look at the source code and see that a WeakHashMap but even with half
>>> memory used, the cache hits are not numerous.
>>>
>>> Is there any configuration to tweak ? (I'm not in debug mode).
>>> Perhaps it's not a bug.
>>>
>>> Anyway I've made a issue in Jira (2635).
>>>
>>>
>>> Can you attach a War-File to a an issue in Jira? If so, I promise to
>>> have
>>>
>>>
>>>> a
>>>> look at it :).
>>>>
>>>> 2008/9/1 denis queffeulou <de...@air2web.com>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>> I've made another test with 4.1.5 which gives:
>>>>>
>>>>> 34,2% 90528 invocations on ExpressionCache.getCompiledExpression
>>>>> 25,4% 90300 invocations on Ognl.compileExpression
>>>>>
>>>>> The test is made of 5 pages which returns XML and has run for about 2
>>>>> hours.
>>>>>
>>>>> I'm not sure to be able to test with 4.1.6 in the next days.
>>>>>
>>>>> --
>>>>> Denis
>>>>>
>>>>>
>>>>> Jesse, could you comment on this? I haven't tried profiling my apps,
>>>>> but
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>> the
>>>>>> repeated calls to Ognl.compileExpression are worrisome if Denis got
>>>>>> his
>>>>>> numbers right. Are there any ognl-related changes in 4.1.6? Denis,
>>>>>> maybe
>>>>>> you
>>>>>> could repeat your profiling with the latest snapshot, so hopefully
>>>>>> something
>>>>>> could still be done for this before 4.1.6 is released.
>>>>>>
>>>>>> Kalle
>>>>>>
>>>>>>
>>>>>> On Thu, Aug 28, 2008 at 5:08 AM, denis queffeulou <
>>>>>> denis.queffeulou@air2web.com> wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>> Hi all,
>>>>>>>
>>>>>>> I'm making some profiling on an web app made with Tapestry 4.1.5
>>>>>>> which
>>>>>>> returns XML.
>>>>>>> The result are disappointing as the average access time (got with
>>>>>>> JMeter)
>>>>>>> is around 2000ms.
>>>>>>>
>>>>>>> In JProfiler, I found that OGNL expressions compilation uses 40% of
>>>>>>> processing time.
>>>>>>> As the JMeter script is requesting always the same page on the
>>>>>>> webapp,
>>>>>>> I'm
>>>>>>> wondering why the expressions are always compiled. The cache seems
>>>>>>> not
>>>>>>> to
>>>>>>> be
>>>>>>> used:
>>>>>>>
>>>>>>> 31896 invocations on ExpressionCache.getCompiledExpression
>>>>>>> 31140 invocations on Ognl.compileExpression
>>>>>>>
>>>>>>> Is there someone to give me a clue to have better performances ?
>>>>>>>
>>>>>>> Thanks
>>>>>>>
>>>>>>> PS: sorry for double posting in dev list, I had some problems to
>>>>>>> subscribe
>>>>>>> to users.
>>>>>>> --
>>>>>>> Denis Queffeulou
>>>>>>>
>>>>>>> ---------------------------------------------------------------------
>>>>>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>>>>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>> ---------------------------------------------------------------------
>>>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> For additional commands, e-mail: users-help@tapestry.apache.org
>
>
Re: T4.1.5 possible ognl cache problem
Posted by denis queffeulou <de...@air2web.com>.
I've done a simple webapp and the result is that compileExpression is
called 18 times but this doesn't increase. So for that webapp it is Ok.
Unfortunately, my main app still have the problem
(org.apache.tapestry.disable-caching is not set so takes its default value).
The last test I used is to request a single page and the number of calls
to compileExpression is the same as the request number (minus 1). It
takes about 16% cpu (it depends on the complexity of the page).
I don't know what is so different between the two webapps that the ognl
cache (something not used directly by my code) seems not to be working.
--
denis
> are you sure, you have org.apache.tapestry.disable-caching set to false? You
> can easily check this by looking at Tapestry's exception page.
>
> 2008/9/1 denis queffeulou <de...@air2web.com>
>
>
>> hmmmm,
>>
>> actually my WAR is a big application and I can't put it in Jira.
>> Don't you already have pages with some OGNL expression in test case ?
>> I look at the source code and see that a WeakHashMap but even with half
>> memory used, the cache hits are not numerous.
>>
>> Is there any configuration to tweak ? (I'm not in debug mode).
>> Perhaps it's not a bug.
>>
>> Anyway I've made a issue in Jira (2635).
>>
>>
>> Can you attach a War-File to a an issue in Jira? If so, I promise to have
>>
>>> a
>>> look at it :).
>>>
>>> 2008/9/1 denis queffeulou <de...@air2web.com>
>>>
>>>
>>>
>>>
>>>> I've made another test with 4.1.5 which gives:
>>>>
>>>> 34,2% 90528 invocations on ExpressionCache.getCompiledExpression
>>>> 25,4% 90300 invocations on Ognl.compileExpression
>>>>
>>>> The test is made of 5 pages which returns XML and has run for about 2
>>>> hours.
>>>>
>>>> I'm not sure to be able to test with 4.1.6 in the next days.
>>>>
>>>> --
>>>> Denis
>>>>
>>>>
>>>> Jesse, could you comment on this? I haven't tried profiling my apps, but
>>>>
>>>>
>>>>
>>>>> the
>>>>> repeated calls to Ognl.compileExpression are worrisome if Denis got his
>>>>> numbers right. Are there any ognl-related changes in 4.1.6? Denis, maybe
>>>>> you
>>>>> could repeat your profiling with the latest snapshot, so hopefully
>>>>> something
>>>>> could still be done for this before 4.1.6 is released.
>>>>>
>>>>> Kalle
>>>>>
>>>>>
>>>>> On Thu, Aug 28, 2008 at 5:08 AM, denis queffeulou <
>>>>> denis.queffeulou@air2web.com> wrote:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>> Hi all,
>>>>>>
>>>>>> I'm making some profiling on an web app made with Tapestry 4.1.5 which
>>>>>> returns XML.
>>>>>> The result are disappointing as the average access time (got with
>>>>>> JMeter)
>>>>>> is around 2000ms.
>>>>>>
>>>>>> In JProfiler, I found that OGNL expressions compilation uses 40% of
>>>>>> processing time.
>>>>>> As the JMeter script is requesting always the same page on the webapp,
>>>>>> I'm
>>>>>> wondering why the expressions are always compiled. The cache seems not
>>>>>> to
>>>>>> be
>>>>>> used:
>>>>>>
>>>>>> 31896 invocations on ExpressionCache.getCompiledExpression
>>>>>> 31140 invocations on Ognl.compileExpression
>>>>>>
>>>>>> Is there someone to give me a clue to have better performances ?
>>>>>>
>>>>>> Thanks
>>>>>>
>>>>>> PS: sorry for double posting in dev list, I had some problems to
>>>>>> subscribe
>>>>>> to users.
>>>>>> --
>>>>>> Denis Queffeulou
>>>>>>
>>>>>> ---------------------------------------------------------------------
>>>>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>>>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>> For additional commands, e-mail: users-help@tapestry.apache.org
>>
>>
>>
>
>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
For additional commands, e-mail: users-help@tapestry.apache.org
Re: T4.1.5 possible ognl cache problem
Posted by Marcus Schulte <et...@googlemail.com>.
are you sure, you have org.apache.tapestry.disable-caching set to false? You
can easily check this by looking at Tapestry's exception page.
2008/9/1 denis queffeulou <de...@air2web.com>
> hmmmm,
>
> actually my WAR is a big application and I can't put it in Jira.
> Don't you already have pages with some OGNL expression in test case ?
> I look at the source code and see that a WeakHashMap but even with half
> memory used, the cache hits are not numerous.
>
> Is there any configuration to tweak ? (I'm not in debug mode).
> Perhaps it's not a bug.
>
> Anyway I've made a issue in Jira (2635).
>
>
> Can you attach a War-File to a an issue in Jira? If so, I promise to have
>> a
>> look at it :).
>>
>> 2008/9/1 denis queffeulou <de...@air2web.com>
>>
>>
>>
>>> I've made another test with 4.1.5 which gives:
>>>
>>> 34,2% 90528 invocations on ExpressionCache.getCompiledExpression
>>> 25,4% 90300 invocations on Ognl.compileExpression
>>>
>>> The test is made of 5 pages which returns XML and has run for about 2
>>> hours.
>>>
>>> I'm not sure to be able to test with 4.1.6 in the next days.
>>>
>>> --
>>> Denis
>>>
>>>
>>> Jesse, could you comment on this? I haven't tried profiling my apps, but
>>>
>>>
>>>> the
>>>> repeated calls to Ognl.compileExpression are worrisome if Denis got his
>>>> numbers right. Are there any ognl-related changes in 4.1.6? Denis, maybe
>>>> you
>>>> could repeat your profiling with the latest snapshot, so hopefully
>>>> something
>>>> could still be done for this before 4.1.6 is released.
>>>>
>>>> Kalle
>>>>
>>>>
>>>> On Thu, Aug 28, 2008 at 5:08 AM, denis queffeulou <
>>>> denis.queffeulou@air2web.com> wrote:
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>> Hi all,
>>>>>
>>>>> I'm making some profiling on an web app made with Tapestry 4.1.5 which
>>>>> returns XML.
>>>>> The result are disappointing as the average access time (got with
>>>>> JMeter)
>>>>> is around 2000ms.
>>>>>
>>>>> In JProfiler, I found that OGNL expressions compilation uses 40% of
>>>>> processing time.
>>>>> As the JMeter script is requesting always the same page on the webapp,
>>>>> I'm
>>>>> wondering why the expressions are always compiled. The cache seems not
>>>>> to
>>>>> be
>>>>> used:
>>>>>
>>>>> 31896 invocations on ExpressionCache.getCompiledExpression
>>>>> 31140 invocations on Ognl.compileExpression
>>>>>
>>>>> Is there someone to give me a clue to have better performances ?
>>>>>
>>>>> Thanks
>>>>>
>>>>> PS: sorry for double posting in dev list, I had some problems to
>>>>> subscribe
>>>>> to users.
>>>>> --
>>>>> Denis Queffeulou
>>>>>
>>>>> ---------------------------------------------------------------------
>>>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> For additional commands, e-mail: users-help@tapestry.apache.org
>
>
--
Marcus Schulte
http://marcus-schulte.blogspot.com
Re: T4.1.5 possible ognl cache problem
Posted by denis queffeulou <de...@air2web.com>.
hmmmm,
actually my WAR is a big application and I can't put it in Jira.
Don't you already have pages with some OGNL expression in test case ?
I look at the source code and see that a WeakHashMap but even with half
memory used, the cache hits are not numerous.
Is there any configuration to tweak ? (I'm not in debug mode).
Perhaps it's not a bug.
Anyway I've made a issue in Jira (2635).
> Can you attach a War-File to a an issue in Jira? If so, I promise to have a
> look at it :).
>
> 2008/9/1 denis queffeulou <de...@air2web.com>
>
>
>> I've made another test with 4.1.5 which gives:
>>
>> 34,2% 90528 invocations on ExpressionCache.getCompiledExpression
>> 25,4% 90300 invocations on Ognl.compileExpression
>>
>> The test is made of 5 pages which returns XML and has run for about 2
>> hours.
>>
>> I'm not sure to be able to test with 4.1.6 in the next days.
>>
>> --
>> Denis
>>
>>
>> Jesse, could you comment on this? I haven't tried profiling my apps, but
>>
>>> the
>>> repeated calls to Ognl.compileExpression are worrisome if Denis got his
>>> numbers right. Are there any ognl-related changes in 4.1.6? Denis, maybe
>>> you
>>> could repeat your profiling with the latest snapshot, so hopefully
>>> something
>>> could still be done for this before 4.1.6 is released.
>>>
>>> Kalle
>>>
>>>
>>> On Thu, Aug 28, 2008 at 5:08 AM, denis queffeulou <
>>> denis.queffeulou@air2web.com> wrote:
>>>
>>>
>>>
>>>
>>>> Hi all,
>>>>
>>>> I'm making some profiling on an web app made with Tapestry 4.1.5 which
>>>> returns XML.
>>>> The result are disappointing as the average access time (got with JMeter)
>>>> is around 2000ms.
>>>>
>>>> In JProfiler, I found that OGNL expressions compilation uses 40% of
>>>> processing time.
>>>> As the JMeter script is requesting always the same page on the webapp,
>>>> I'm
>>>> wondering why the expressions are always compiled. The cache seems not to
>>>> be
>>>> used:
>>>>
>>>> 31896 invocations on ExpressionCache.getCompiledExpression
>>>> 31140 invocations on Ognl.compileExpression
>>>>
>>>> Is there someone to give me a clue to have better performances ?
>>>>
>>>> Thanks
>>>>
>>>> PS: sorry for double posting in dev list, I had some problems to
>>>> subscribe
>>>> to users.
>>>> --
>>>> Denis Queffeulou
>>>>
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>> For additional commands, e-mail: users-help@tapestry.apache.org
>>
>>
>>
>
>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
For additional commands, e-mail: users-help@tapestry.apache.org
Re: T4.1.5 possible ognl cache problem
Posted by Marcus Schulte <et...@googlemail.com>.
Can you attach a War-File to a an issue in Jira? If so, I promise to have a
look at it :).
2008/9/1 denis queffeulou <de...@air2web.com>
> I've made another test with 4.1.5 which gives:
>
> 34,2% 90528 invocations on ExpressionCache.getCompiledExpression
> 25,4% 90300 invocations on Ognl.compileExpression
>
> The test is made of 5 pages which returns XML and has run for about 2
> hours.
>
> I'm not sure to be able to test with 4.1.6 in the next days.
>
> --
> Denis
>
>
> Jesse, could you comment on this? I haven't tried profiling my apps, but
>> the
>> repeated calls to Ognl.compileExpression are worrisome if Denis got his
>> numbers right. Are there any ognl-related changes in 4.1.6? Denis, maybe
>> you
>> could repeat your profiling with the latest snapshot, so hopefully
>> something
>> could still be done for this before 4.1.6 is released.
>>
>> Kalle
>>
>>
>> On Thu, Aug 28, 2008 at 5:08 AM, denis queffeulou <
>> denis.queffeulou@air2web.com> wrote:
>>
>>
>>
>>> Hi all,
>>>
>>> I'm making some profiling on an web app made with Tapestry 4.1.5 which
>>> returns XML.
>>> The result are disappointing as the average access time (got with JMeter)
>>> is around 2000ms.
>>>
>>> In JProfiler, I found that OGNL expressions compilation uses 40% of
>>> processing time.
>>> As the JMeter script is requesting always the same page on the webapp,
>>> I'm
>>> wondering why the expressions are always compiled. The cache seems not to
>>> be
>>> used:
>>>
>>> 31896 invocations on ExpressionCache.getCompiledExpression
>>> 31140 invocations on Ognl.compileExpression
>>>
>>> Is there someone to give me a clue to have better performances ?
>>>
>>> Thanks
>>>
>>> PS: sorry for double posting in dev list, I had some problems to
>>> subscribe
>>> to users.
>>> --
>>> Denis Queffeulou
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
>>> For additional commands, e-mail: users-help@tapestry.apache.org
>>>
>>>
>>>
>>>
>>
>>
>>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> For additional commands, e-mail: users-help@tapestry.apache.org
>
>
--
Marcus Schulte
http://marcus-schulte.blogspot.com