[TIMOB-644] table view with large data sets are very slow

GitHub Issue	n/a
Type	Bug
Priority	Medium
Status	Closed
Resolution	Fixed
Resolution Date	2011-04-17T01:53:47.000+0000
Affected Version/s	n/a
Fix Version/s	Release 1.5.0
Components	iOS
Labels	n/a
Reporter	Nolan Wright
Assignee	Blain Hamon
Created	2011-04-15T02:33:34.000+0000
Updated	2011-04-17T01:53:47.000+0000

Description

Base UI => Views => Table Views => Table with Controls

this is very slow to load. this is also a customer issue

Comments

Blain Hamon 2011-04-15

Okay, it's the loading itself that is slow. Looking into this and the good news is that it's not creating unnecessary views. After adding a timestamp feature, the time stamps are such:

   [TIMESTAMP] 291851846.531215 Starting Group 0
   [TIMESTAMP] 291851847.362943 Starting Group 1
   [TIMESTAMP] 291851848.180457 Starting Group 2
   [TIMESTAMP] 291851849.009998 Starting Group 3
   [TIMESTAMP] 291851849.844547 Starting Group 4
   [TIMESTAMP] 291851850.683528 Starting Group 5
   [TIMESTAMP] 291851851.655897 Starting Group 6
   [TIMESTAMP] 291851852.515305 Starting Group 7
   [TIMESTAMP] 291851853.381860 Starting Group 8
   [TIMESTAMP] 291851854.257839 Starting Group 9
   [TIMESTAMP] 291851855.153160 Creating table view
   [TIMESTAMP] 291851855.293800 Adding table view

Meaning that each group of 40 rows took about 0.8 seconds. In comparison, the table view creation was fast, and after adding, the result was maybe half a second or less. In other words, something along the proxy creation or javascript running is the performance hit.

Jeff Haynie 2011-04-15
yeah, i think this might be related to incorrectly placing the proxy property creation on the UI thread - which is should not be in construction time.
Thomas Huelbert 2011-04-15
resolved during the 1.4 release - that said, I will compare the performance of this test case on 1.3 vs 1.4 and log a bug if the perf is lagging on 1.4

valid, has testcase

JSON Source