well, I would say a 50% performance hit is problematic as well.. and
11 sec to load 10k lines on a machine with the power you are
discussing.. still pretty bad.
But yes, the sort is the biggest problem.. I assume you can imagine
our users dont want their app to freeze every time they change a table
sort.
On 1/5/06, Dietrich Streifert <[EMAIL PROTECTED]> wrote:
I was just to curious about this. I changed the
List_View_10.htm user
demo of renderer so that it creates 10000 lines.
Here are the benchmarks:
Reloading: IE6: ~11 sec.; FireFox 1.5: ~5 sec.
Sorting first column: IE6: ~ 54 sec.; FireFox 1.5: ~2 sec.
This is on a P4 3.6 GHz, 2 GByte RAM, retrieving the page from
a VMWare
virtual machine running Solaris9 x86 running on the same real
hardware.
So the main performance degradation is in sorting.
Sebastian Werner schrieb:
> just one question. Are you trying out "renderer" or the
current release?
>
> Sebastian
>
>
> J. Russell Smyth schrieb:
>>> J. Russell Smyth schrieb:
>>>> I am curious about some "construction" decisions. Is
there reasoning
>>>> behind making QxListView from "div" components rather
than "table"? My
>>>> main curiosity is we are evaluating QooxDoo for some
major internal
>>>> applications, and want to make sure we understand as much
as possible
>>>> before making a decision.
>>> The old qooxdoo use sub-node-structures many times. This
is true for
>>> tables, where you need to move the children to the desired
target node,
>>> which is not the real node of the parent itself.
>>
>> I am not able to understand what you are saying here, other
than old
>> qooxdoo
>> used tables?
>>
>>> The new ones layout decisions use divs all over and try to
create as
>>> less as DOM nodes as necessary (as they are performance
critical).
>>
>> Yes, I understand that creating fewer dom nodes if possible
is an
>> advantage, but
>> do you not also discard all of the formatting capaiblities
built
>> natively into
>> table structure?
>>
>> Dont get me wrong, in part I see the elegance of using
div's and your
>> own layout
>> mechanism where possible, but question the value in tabular
data?
>>
>>>> One reason I ask this is we have had to deal with large
tables and
>>>> sorting here, and have had to do some interesting stuff
to make them
>>>> fast - we have at least one app with a requirement for
tables
>>>> containing
>>>> 5000 rows with sorting capability - with IE support a
must. For
>>>> QooxDoo,
>>>> if you load QxListView with 5k rows in the demo, it
dies.. it has
>>>> actually crashed my IE, and when it dosnt, it just falls
asleep.. even
>>>> with only a few k rows, sorting is unacceptably slow...
>>> It really dies? What means "dies" for you?
>>
>> Well, as I stated, it somtimes crashes IE. Other times it
will just
>> spin CPU cycles at about 99% for very long periods of time
(10-20
>> seconds for 5k rows)
>>
>>> Is the loading the problem or
>>> the sorting of the data.
>>
>> each additional 1k items takes progressively longer, so
loading is
>> also a problem - somewhere around 15 seconds to load
>>
>> But the real problem is sorting. And yes, it is MUCH worse
in IE.
>>
>>> To handle sorts of large arrays at client is a
>>> problem because the Internet Explorer has some huge
performance impacts
>>> there (much bigger than Firefox). If you have many items
in your
>>> list it
>>> is probably the best to do the real sorting at the server
and just send
>>> the new data via AJAX to the client.
>>
>> doing this server side is not an option for at least one of
the
>> applications. I myself dont
>> belive that 5k rows of data is human consumable, and
displaying data
>> in this format to me
>> is incorrect, but that is the requirement.
>>
>> Unfortunately, there is an existing in-house custom table
component
>> that is able to sort 5k rows in IE on a moderatly powered
pc (sub what
>> my test machine is) in sub second time, so
>> I wont be able to sell that it is too slow because of ie :)
>>
>> If I can find ways to improve this, based on our in house
solution, I
>> will gladly submit a patch.
>>
>> Thank you for your information!
>> Russell
>>
>>
>> -------------------------------------------------------
>> This SF.net email is sponsored by: Splunk Inc. Do you grep
through
>> log files
>> for problems? Stop! Download the new AJAX search engine
that makes
>> searching your log files as easy as surfing
the web. DOWNLOAD SPLUNK!
>> http://ads.osdn.com/?ad_idv37&alloc_id865&op=click
>> _______________________________________________
>> Qooxdoo-devel mailing list
>> [email protected]
>> https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel
>
>
>
> -------------------------------------------------------
> This SF.net email is sponsored by: Splunk Inc. Do you grep
through log
> files
> for problems? Stop! Download the new AJAX search engine
that makes
> searching your log files as easy as surfing
the web. DOWNLOAD SPLUNK!
> http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click
> _______________________________________________
> Qooxdoo-devel mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel
--
Mit freundlichen Grüßen
Dietrich Streifert
Visionet GmbH
-------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc. Do you grep
through log files
for problems? Stop! Download the new AJAX search engine that
makes
searching your log files as easy as surfing
the web. DOWNLOAD SPLUNK!
http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click
_______________________________________________
Qooxdoo-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel
