Re: tree batching: performance fix for multiple message delete coming soon (hyatt rocks)

[Seth Spitzer]

Seth Spitzer wrote:

 
> When deleting doesn't cause scrolling, I don't think we suffer the same 
> performance problems.

this really seems to be the case.  try this:

task #1
load a 100 mesage folder
scroll down to the bottom, select the last 10 messages
scroll up so the selected messages are off screen
hit delete

vs

task #2
load a 100 message folder
scroll to the top, select the first 10 messages
scroll down so the selected messages are off screen
hit delete

task #2 is much slower than task #1.

using the tree batching APIs we can get #1 ~= #2.
tree batching will also make "select all, delete" faster, too.

My guess is if we are going to two 2 or more scrolls, we should do batching.

-Seth