[appengine-java] Re: GAE takes 28 sec to read just 200 records
> 17. I09-03 09:46AM 31.994 > > vik.sakshum.sakshumweb.jsp.model.jdo.PMF : Loading PMF in > com.google.apphosting.runtime.security.userclassloa...@8fcc7b > > 18. I09-03 09:46AM 41.622 Don't you think it's a strange way to "benchmark" things by including known one-off operations like creating a PMF ? Personally that ought to be included in application startup timings, rather than "time taken to read 200 records". --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-java@googlegroups.com To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~--~~~~--~~--~--~---
[appengine-java] Re: GAE takes 28 sec to read just 200 records
Hie Strange to hear that if it is creating PMF again Should it do it just once when i logged in? In the logging process I do get an instance of PMF. So, why it is doing that again? Any advise what may be going wrong here? Thankx and Regards Vik Founder www.sakshum.com www.sakshum.blogspot.com On Thu, Sep 3, 2009 at 10:25 PM, datanucleus wrote: > > >17. I09-03 09:46AM 31.994 > > > >vik.sakshum.sakshumweb.jsp.model.jdo.PMF : Loading PMF in > > com.google.apphosting.runtime.security.userclassloa...@8fcc7b > > > >18. I09-03 09:46AM 41.622 > > Don't you think it's a strange way to "benchmark" things by including > known one-off operations like creating a PMF ? > Personally that ought to be included in application startup timings, > rather than "time taken to read 200 records". > > > > --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-java@googlegroups.com To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~--~~~~--~~--~--~---
[appengine-java] Re: GAE takes 28 sec to read just 200 records
Based on one of your recent posts, it seems like multiple
PersistenceManagerFactory instances are being created by different
classloaders. Since this is an expensive operation, this could explain why
you're experiencing such slow performance. Did you follow Toby's suggestion
in the last post?
-
1) Are you maybe loading that singleton class in different classloaders?
Try logging the classloader object reference that tries to create the
PersistenceManagerFactory. You can add a static initializer ABOVE
pmfInstance.
static {
logger.log(Level.SEVERE, "Loading PMF in " + PMF.class.getClassLoader()");
}
-
- Jason
On Thu, Sep 3, 2009 at 10:03 AM, Vik wrote:
> Hie
> Strange to hear that if it is creating PMF again
>
> Should it do it just once when i logged in? In the logging process I do get
> an instance of PMF. So, why it is doing that again?
> Any advise what may be going wrong here?
>
>
> Thankx and Regards
>
> Vik
> Founder
> www.sakshum.com
> www.sakshum.blogspot.com
>
>
> On Thu, Sep 3, 2009 at 10:25 PM, datanucleus wrote:
>
>>
>> >17. I09-03 09:46AM 31.994
>> >
>> >vik.sakshum.sakshumweb.jsp.model.jdo.PMF : Loading PMF in
>> > com.google.apphosting.runtime.security.userclassloa...@8fcc7b
>> >
>> >18. I09-03 09:46AM 41.622
>>
>> Don't you think it's a strange way to "benchmark" things by including
>> known one-off operations like creating a PMF ?
>> Personally that ought to be included in application startup timings,
>> rather than "time taken to read 200 records".
>>
>>
>>
>
> >
>
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[appengine-java] Re: GAE takes 28 sec to read just 200 records
Hie
yeah I did that..
and what I get are two different values from this block
At first time of app startup
vik.sakshum.sakshumweb.jsp.model.jdo.PMF : Loading PMF in
com.google.apphosting.runtime.security.userclassloa...@1f7cdc7
and in another flow
vik.sakshum.sakshumweb.jsp.model.jdo.PMF : Loading PMF in
com.google.apphosting.runtime.security.userclassloa...@1e6f0ef
So, it means it is trying to load it in two different class loaders. So, how
should I fix it?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Sat, Sep 5, 2009 at 5:14 AM, Jason (Google) wrote:
> Based on one of your recent posts, it seems like multiple
> PersistenceManagerFactory instances are being created by different
> classloaders. Since this is an expensive operation, this could explain why
> you're experiencing such slow performance. Did you follow Toby's suggestion
> in the last post?
> -
> 1) Are you maybe loading that singleton class in different classloaders?
> Try logging the classloader object reference that tries to create the
> PersistenceManagerFactory. You can add a static initializer ABOVE
> pmfInstance.
>
> static {
> logger.log(Level.SEVERE, "Loading PMF in " +
> PMF.class.getClassLoader()");
> }
> -
>
> - Jason
>
> On Thu, Sep 3, 2009 at 10:03 AM, Vik wrote:
>
>> Hie
>> Strange to hear that if it is creating PMF again
>>
>> Should it do it just once when i logged in? In the logging process I do
>> get an instance of PMF. So, why it is doing that again?
>> Any advise what may be going wrong here?
>>
>>
>> Thankx and Regards
>>
>> Vik
>> Founder
>> www.sakshum.com
>> www.sakshum.blogspot.com
>>
>>
>> On Thu, Sep 3, 2009 at 10:25 PM, datanucleus wrote:
>>
>>>
>>> >17. I09-03 09:46AM 31.994
>>> >
>>> >vik.sakshum.sakshumweb.jsp.model.jdo.PMF : Loading PMF in
>>> > com.google.apphosting.runtime.security.userclassloa...@8fcc7b
>>> >
>>> >18. I09-03 09:46AM 41.622
>>>
>>> Don't you think it's a strange way to "benchmark" things by including
>>> known one-off operations like creating a PMF ?
>>> Personally that ought to be included in application startup timings,
>>> rather than "time taken to read 200 records".
>>>
>>>
>>>
>>
>>
>>
>
> >
>
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To post to this group, send email to google-appengine-java@googlegroups.com
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[appengine-java] Re: GAE takes 28 sec to read just 200 records
hie any updates on this please?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Sat, Sep 5, 2009 at 8:07 PM, Vik wrote:
> Hie
> yeah I did that..
>
> and what I get are two different values from this block
>
> At first time of app startup
> vik.sakshum.sakshumweb.jsp.model.jdo.PMF : Loading PMF in
> com.google.apphosting.runtime.security.userclassloa...@1f7cdc7
>
> and in another flow
> vik.sakshum.sakshumweb.jsp.model.jdo.PMF : Loading PMF in
> com.google.apphosting.runtime.security.userclassloa...@1e6f0ef
>
>
> So, it means it is trying to load it in two different class loaders. So,
> how should I fix it?
>
> Thankx and Regards
>
> Vik
> Founder
> www.sakshum.com
> www.sakshum.blogspot.com
>
>
> On Sat, Sep 5, 2009 at 5:14 AM, Jason (Google) wrote:
>
>> Based on one of your recent posts, it seems like multiple
>> PersistenceManagerFactory instances are being created by different
>> classloaders. Since this is an expensive operation, this could explain why
>> you're experiencing such slow performance. Did you follow Toby's suggestion
>> in the last post?
>> -
>> 1) Are you maybe loading that singleton class in different classloaders?
>> Try logging the classloader object reference that tries to create the
>> PersistenceManagerFactory. You can add a static initializer ABOVE
>> pmfInstance.
>>
>> static {
>> logger.log(Level.SEVERE, "Loading PMF in " +
>> PMF.class.getClassLoader()");
>> }
>> -
>>
>> - Jason
>>
>> On Thu, Sep 3, 2009 at 10:03 AM, Vik wrote:
>>
>>> Hie
>>> Strange to hear that if it is creating PMF again
>>>
>>> Should it do it just once when i logged in? In the logging process I do
>>> get an instance of PMF. So, why it is doing that again?
>>> Any advise what may be going wrong here?
>>>
>>>
>>> Thankx and Regards
>>>
>>> Vik
>>> Founder
>>> www.sakshum.com
>>> www.sakshum.blogspot.com
>>>
>>>
>>> On Thu, Sep 3, 2009 at 10:25 PM, datanucleus
>>> wrote:
>>>
>17. I09-03 09:46AM 31.994
>
>vik.sakshum.sakshumweb.jsp.model.jdo.PMF : Loading PMF in
> com.google.apphosting.runtime.security.userclassloa...@8fcc7b
>
>18. I09-03 09:46AM 41.622
Don't you think it's a strange way to "benchmark" things by including
known one-off operations like creating a PMF ?
Personally that ought to be included in application startup timings,
rather than "time taken to read 200 records".
>>>
>>>
>>>
>>
>> >>
>>
>
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You received this message because you are subscribed to the Google Groups
"Google App Engine for Java" group.
To post to this group, send email to google-appengine-java@googlegroups.com
To unsubscribe from this group, send email to
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For more options, visit this group at
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[appengine-java] Re: GAE takes 28 sec to read just 200 records
hie
any updates please on this
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Tue, Sep 8, 2009 at 7:33 PM, Vik wrote:
> hie any updates on this please?
> Thankx and Regards
>
> Vik
> Founder
> www.sakshum.com
> www.sakshum.blogspot.com
>
>
> On Sat, Sep 5, 2009 at 8:07 PM, Vik wrote:
>
>> Hie
>> yeah I did that..
>>
>> and what I get are two different values from this block
>>
>> At first time of app startup
>> vik.sakshum.sakshumweb.jsp.model.jdo.PMF : Loading PMF in
>> com.google.apphosting.runtime.security.userclassloa...@1f7cdc7
>>
>> and in another flow
>> vik.sakshum.sakshumweb.jsp.model.jdo.PMF : Loading PMF in
>> com.google.apphosting.runtime.security.userclassloa...@1e6f0ef
>>
>>
>> So, it means it is trying to load it in two different class loaders. So,
>> how should I fix it?
>>
>> Thankx and Regards
>>
>> Vik
>> Founder
>> www.sakshum.com
>> www.sakshum.blogspot.com
>>
>>
>> On Sat, Sep 5, 2009 at 5:14 AM, Jason (Google) wrote:
>>
>>> Based on one of your recent posts, it seems like multiple
>>> PersistenceManagerFactory instances are being created by different
>>> classloaders. Since this is an expensive operation, this could explain why
>>> you're experiencing such slow performance. Did you follow Toby's suggestion
>>> in the last post?
>>> -
>>> 1) Are you maybe loading that singleton class in different
>>> classloaders? Try logging the classloader object reference that tries to
>>> create the PersistenceManagerFactory. You can add a static initializer ABOVE
>>> pmfInstance.
>>>
>>> static {
>>> logger.log(Level.SEVERE, "Loading PMF in " +
>>> PMF.class.getClassLoader()");
>>> }
>>> -
>>>
>>> - Jason
>>>
>>> On Thu, Sep 3, 2009 at 10:03 AM, Vik wrote:
>>>
Hie
Strange to hear that if it is creating PMF again
Should it do it just once when i logged in? In the logging process I do
get an instance of PMF. So, why it is doing that again?
Any advise what may be going wrong here?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Thu, Sep 3, 2009 at 10:25 PM, datanucleus
wrote:
>
> >17. I09-03 09:46AM 31.994
> >
> >vik.sakshum.sakshumweb.jsp.model.jdo.PMF : Loading PMF in
> > com.google.apphosting.runtime.security.userclassloa...@8fcc7b
> >
> >18. I09-03 09:46AM 41.622
>
> Don't you think it's a strange way to "benchmark" things by including
> known one-off operations like creating a PMF ?
> Personally that ought to be included in application startup timings,
> rather than "time taken to read 200 records".
>
>
>
>>>
>>> >>>
>>>
>>
>
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You received this message because you are subscribed to the Google Groups
"Google App Engine for Java" group.
To post to this group, send email to google-appengine-java@googlegroups.com
To unsubscribe from this group, send email to
google-appengine-java+unsubscr...@googlegroups.com
For more options, visit this group at
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-~--~~~~--~~--~--~---
[appengine-java] Re: GAE takes 28 sec to read just 200 records
hie
Can anyone please guide on this?
Thankx and Regards
Vik
Founder
www.sakshum.com
www.sakshum.blogspot.com
On Fri, Sep 11, 2009 at 10:24 PM, Vik wrote:
> hie
> any updates please on this
>
> Thankx and Regards
>
> Vik
> Founder
> www.sakshum.com
> www.sakshum.blogspot.com
>
>
> On Tue, Sep 8, 2009 at 7:33 PM, Vik wrote:
>
>> hie any updates on this please?
>> Thankx and Regards
>>
>> Vik
>> Founder
>> www.sakshum.com
>> www.sakshum.blogspot.com
>>
>>
>> On Sat, Sep 5, 2009 at 8:07 PM, Vik wrote:
>>
>>> Hie
>>> yeah I did that..
>>>
>>> and what I get are two different values from this block
>>>
>>> At first time of app startup
>>> vik.sakshum.sakshumweb.jsp.model.jdo.PMF : Loading PMF in
>>> com.google.apphosting.runtime.security.userclassloa...@1f7cdc7
>>>
>>> and in another flow
>>> vik.sakshum.sakshumweb.jsp.model.jdo.PMF : Loading PMF in
>>> com.google.apphosting.runtime.security.userclassloa...@1e6f0ef
>>>
>>>
>>> So, it means it is trying to load it in two different class loaders. So,
>>> how should I fix it?
>>>
>>> Thankx and Regards
>>>
>>> Vik
>>> Founder
>>> www.sakshum.com
>>> www.sakshum.blogspot.com
>>>
>>>
>>> On Sat, Sep 5, 2009 at 5:14 AM, Jason (Google) wrote:
>>>
Based on one of your recent posts, it seems like multiple
PersistenceManagerFactory instances are being created by different
classloaders. Since this is an expensive operation, this could explain why
you're experiencing such slow performance. Did you follow Toby's suggestion
in the last post?
-
1) Are you maybe loading that singleton class in different
classloaders? Try logging the classloader object reference that tries to
create the PersistenceManagerFactory. You can add a static initializer
ABOVE
pmfInstance.
static {
logger.log(Level.SEVERE, "Loading PMF in " +
PMF.class.getClassLoader()");
}
-
- Jason
On Thu, Sep 3, 2009 at 10:03 AM, Vik wrote:
> Hie
> Strange to hear that if it is creating PMF again
>
> Should it do it just once when i logged in? In the logging process I do
> get an instance of PMF. So, why it is doing that again?
> Any advise what may be going wrong here?
>
>
> Thankx and Regards
>
> Vik
> Founder
> www.sakshum.com
> www.sakshum.blogspot.com
>
>
> On Thu, Sep 3, 2009 at 10:25 PM, datanucleus > wrote:
>
>>
>> >17. I09-03 09:46AM 31.994
>> >
>> >vik.sakshum.sakshumweb.jsp.model.jdo.PMF : Loading PMF in
>> > com.google.apphosting.runtime.security.userclassloa...@8fcc7b
>> >
>> >18. I09-03 09:46AM 41.622
>>
>> Don't you think it's a strange way to "benchmark" things by including
>> known one-off operations like creating a PMF ?
>> Personally that ought to be included in application startup timings,
>> rather than "time taken to read 200 records".
>>
>>
>>
>
>
>
>>>
>>
>
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