[mythtv-commits] Ticket #477: mythlcdserver extremely ineffecient on large menus, regression from pre-mythlcdserver.

[MythTV]

#477: mythlcdserver extremely ineffecient on large menus, regression from pre-
mythlcdserver.
------------------------------------+---------------------------------------
 Reporter:  eskil <myth at eskil.org>  |       Owner:  ijr
     Type:  enhancement             |      Status:  new
 Priority:  minor                   |   Milestone:     
Component:  mythmusic               |     Version:     
 Severity:  medium                  |  ------------------------------------+---------------------------------------
 The new mythlcdserver is very ineffecient when handling large menus. The
 way that UIManagedTreeListType updates the menu is to call
 LCD::switchToMenu from the ::Draw method. It passes the entire list of
 entries to this call.

 Pre-mythlcdserver, that was ok, since it was an in-process operation. Now
 that list get's sent to mythlcdserver via a socket, and mythlcdserver then
 decides which subportion to display.

 In my case, when navigating in mythmusic, it transfers a menu with over
 10000 items - 100% cpu load and the menu does not keep up.

 I'm guessing this can be fixed by changing LCD::switchToMenu, to include
 the logic that depending on the lcdHeight determines which elements are
 visible, and then only send those across to the mythlcdserver.

-- 
Ticket URL: <http://svn.mythtv.org/trac/ticket/477>
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