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Posted to users@wicket.apache.org by David R Robison <dr...@openroadsconsulting.com> on 2008/11/10 23:03:45 UTC
Size of session cache
Is there a convenient way to tell the size of user's session cache? David
--
David R Robison
Open Roads Consulting, Inc.
103 Watson Road, Chesapeake, VA 23320
phone: (757) 546-3401
e-mail: drrobison@openroadsconsulting.com
web: http://openroadsconsulting.com
blog: http://therobe.blogspot.com
book: http://www.xulonpress.com/book_detail.php?id=2579
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Re: Question on PageMap
Posted by Erik van Oosten <e....@grons.nl>.
> I am not sure what the default is set to
Look at the constructors of DiskPageStore.
> My end goal is to try and squeeze more performance out of my application.
If that is your goal you are on the wrong track. The disk store is a
rotating logging based, mostly write-only store. Logging based as new
content is written sequentially from start to end of the file, rotated
because when the file is full it starts at byte 0 thereby overwriting
old pages. It is mostly write-only as only when a user presses the back
button data may be read back from the page store.
Early removal of data will only mean more disk-head movements making it
slower instead of faster.
Regards,
Erik.
David R Robison wrote:
> I have been monitoring the size of the pm-null file stored in the Work
> directory from Tomcat. I assume that it is the serialized version of
> the PageMap. I have an application where, if I navigate from page A to
> page B and then back to page A, the pm-null file keeps growing. I
> understand that I can set the maximum number of pages saved in the
> PageMap but I am not sure what the default is set to. Also, if I am
> leaving a page with a form and do not intend to return to that page
> and submit its values, do I even need it in the PageMap? Is there a
> way I can remove my page from the PageMap when I know I am no longer
> going to need its values? My end goal is to try and squeeze more
> performance out of my application. I hope this is understandable...
> any thoughts?
>
--
Erik van Oosten
http://www.day-to-day-stuff.blogspot.com/
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Question on PageMap
Posted by David R Robison <dr...@openroadsconsulting.com>.
I have been monitoring the size of the pm-null file stored in the Work
directory from Tomcat. I assume that it is the serialized version of the
PageMap. I have an application where, if I navigate from page A to page
B and then back to page A, the pm-null file keeps growing. I understand
that I can set the maximum number of pages saved in the PageMap but I am
not sure what the default is set to. Also, if I am leaving a page with a
form and do not intend to return to that page and submit its values, do
I even need it in the PageMap? Is there a way I can remove my page from
the PageMap when I know I am no longer going to need its values? My end
goal is to try and squeeze more performance out of my application. I
hope this is understandable... any thoughts?
--
David R Robison
Open Roads Consulting, Inc.
103 Watson Road, Chesapeake, VA 23320
phone: (757) 546-3401
e-mail: drrobison@openroadsconsulting.com
web: http://openroadsconsulting.com
blog: http://therobe.blogspot.com
book: http://www.xulonpress.com/book_detail.php?id=2579
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Re: Size of session cache
Posted by Johan Compagner <jc...@gmail.com>.
See:
/**
* Creates a new {@link DiskPageStore} instance.
*
* @param maxSizePerPagemap
* the maximum size of pagemap file (in bytes)
* @param maxSizePerSession
* the maximum size of session (in bytes)
* @param fileChannelPoolCapacity
* the maximum number of concurrently opened files (higher
number improves
* performance under heavy load).
*
*/
public DiskPageStore(int maxSizePerPagemap, int maxSizePerSession, int
fileChannelPoolCapacity)
{
this(getDefaultFileStoreFolder(), maxSizePerPagemap,
maxSizePerSession,
fileChannelPoolCapacity);
}
On Tue, Nov 11, 2008 at 2:37 PM, David R Robison <
drrobison@openroadsconsulting.com> wrote:
> The size the session takes up on the disk. David
>
>
> Johan Compagner wrote:
>
>> which size exactly are you talking about?
>>
>>
>> On Mon, Nov 10, 2008 at 11:03 PM, David R Robison <
>> drrobison@openroadsconsulting.com> wrote:
>>
>>
>>
>>> Is there a convenient way to tell the size of user's session cache? David
>>>
>>> --
>>>
>>> David R Robison
>>> Open Roads Consulting, Inc.
>>> 103 Watson Road, Chesapeake, VA 23320
>>> phone: (757) 546-3401
>>> e-mail: drrobison@openroadsconsulting.com
>>> web: http://openroadsconsulting.com
>>> blog: http://therobe.blogspot.com
>>> book: http://www.xulonpress.com/book_detail.php?id=2579
>>>
>>> This e-mail communication (including any attachments) may contain
>>> confidential and/or privileged material intended solely for the
>>> individual
>>> or entity to which it is addressed. If you are not the intended
>>> recipient,
>>> you should immediately stop reading this message and delete it from all
>>> computers that it resides on. Any unauthorized reading, distribution,
>>> copying or other use of this communication (or its attachments) is
>>> strictly
>>> prohibited. If you have received this communication in error, please
>>> notify
>>> us immediately.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
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>>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>>> For additional commands, e-mail: users-help@wicket.apache.org
>>>
>>>
>>>
>>>
>>
>>
>>
>
> --
>
> David R Robison
> Open Roads Consulting, Inc.
> 103 Watson Road, Chesapeake, VA 23320
> phone: (757) 546-3401
> e-mail: drrobison@openroadsconsulting.com
> web: http://openroadsconsulting.com
> blog: http://therobe.blogspot.com
> book: http://www.xulonpress.com/book_detail.php?id=2579
>
> This e-mail communication (including any attachments) may contain
> confidential and/or privileged material intended solely for the individual
> or entity to which it is addressed. If you are not the intended recipient,
> you should immediately stop reading this message and delete it from all
> computers that it resides on. Any unauthorized reading, distribution,
> copying or other use of this communication (or its attachments) is strictly
> prohibited. If you have received this communication in error, please notify
> us immediately.
>
>
>
>
>
Re: Size of session cache
Posted by David R Robison <dr...@openroadsconsulting.com>.
The size the session takes up on the disk. David
Johan Compagner wrote:
> which size exactly are you talking about?
>
>
> On Mon, Nov 10, 2008 at 11:03 PM, David R Robison <
> drrobison@openroadsconsulting.com> wrote:
>
>
>> Is there a convenient way to tell the size of user's session cache? David
>>
>> --
>>
>> David R Robison
>> Open Roads Consulting, Inc.
>> 103 Watson Road, Chesapeake, VA 23320
>> phone: (757) 546-3401
>> e-mail: drrobison@openroadsconsulting.com
>> web: http://openroadsconsulting.com
>> blog: http://therobe.blogspot.com
>> book: http://www.xulonpress.com/book_detail.php?id=2579
>>
>> This e-mail communication (including any attachments) may contain
>> confidential and/or privileged material intended solely for the individual
>> or entity to which it is addressed. If you are not the intended recipient,
>> you should immediately stop reading this message and delete it from all
>> computers that it resides on. Any unauthorized reading, distribution,
>> copying or other use of this communication (or its attachments) is strictly
>> prohibited. If you have received this communication in error, please notify
>> us immediately.
>>
>>
>>
>>
>>
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>> For additional commands, e-mail: users-help@wicket.apache.org
>>
>>
>>
>
>
--
David R Robison
Open Roads Consulting, Inc.
103 Watson Road, Chesapeake, VA 23320
phone: (757) 546-3401
e-mail: drrobison@openroadsconsulting.com
web: http://openroadsconsulting.com
blog: http://therobe.blogspot.com
book: http://www.xulonpress.com/book_detail.php?id=2579
This e-mail communication (including any attachments) may contain confidential and/or privileged material intended solely for the individual or entity to which it is addressed. If you are not the intended recipient, you should immediately stop reading this message and delete it from all computers that it resides on. Any unauthorized reading, distribution, copying or other use of this communication (or its attachments) is strictly prohibited. If you have received this communication in error, please notify us immediately.
Re: Size of session cache
Posted by Johan Compagner <jc...@gmail.com>.
which size exactly are you talking about?
On Mon, Nov 10, 2008 at 11:03 PM, David R Robison <
drrobison@openroadsconsulting.com> wrote:
> Is there a convenient way to tell the size of user's session cache? David
>
> --
>
> David R Robison
> Open Roads Consulting, Inc.
> 103 Watson Road, Chesapeake, VA 23320
> phone: (757) 546-3401
> e-mail: drrobison@openroadsconsulting.com
> web: http://openroadsconsulting.com
> blog: http://therobe.blogspot.com
> book: http://www.xulonpress.com/book_detail.php?id=2579
>
> This e-mail communication (including any attachments) may contain
> confidential and/or privileged material intended solely for the individual
> or entity to which it is addressed. If you are not the intended recipient,
> you should immediately stop reading this message and delete it from all
> computers that it resides on. Any unauthorized reading, distribution,
> copying or other use of this communication (or its attachments) is strictly
> prohibited. If you have received this communication in error, please notify
> us immediately.
>
>
>
>
>
>
>
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> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>