Apache OpenOffice (AOO) Bugzilla – Issue 29120
Presentation loads slides and remains stuck for some seconds after slide displayed
Last modified: 2017-05-20 11:08:34 UTC
When playing a presentation, there are slides which load just fine, but after the slide is displayed correctly (which takes a very short time), the presentation is stuck for several seconds. During this time there is a sand clock mark on the bottom left corner of the screen. I don't know the reason for this, as this occurs for both text-only slides as well as slides with large images. My disk does not work during that time (LED inactive), so I believe it is not a disk read time. This phenomenon prevents rapid skipping of slides. It actually limits the speed of changing slides. For example, if I press the PgDn button twice, the second press would have no effect: the first would change the slide, but the second would fall in the period of time of the sand clock. Only after about 5 seconds I can press PgDn again. This problem does not occur in edit mode, where I walk through slides very fast. It exists in earlier versions of OpenOffice as well.
Reassigned to Christian.
The hour glass is visible when the next slide will be prepared to show. The time the preparation needs (the hour glass is visible) depends on the content of the slide.
In this case, a very significant performance improvement is necessary in that part of the code. It is unreasonably slow. I work on a Pentium III 850MHz, 256M RAM laptop, but I cannot page up and down between pages smoothly. When in front of a class, this waiting time is highly bothering. I want to go back a slide, but I have to wait for the *next* slide to render. Preparing next slide is not interruptible, so moving to previous slide is waiting in vain. In addition, I exported the presentation to PDF, and tested the transition. Transition between PDF pages is by far faster and smoother than by the OpenOffice.org (680m36 and 1.1.1) presentation of the same slides. Therefore, if one has no special effects in the presentation, one's best way to present it is by PDF export. I believe this is not the intention of OpenOffice.org presenter. At first, I thought maybe I should now change this issue to ``Enhancement'', but I refrain from that, due to its high severity. I believe people may even avoid using OpenOffice.org because of so poor performance. As far as I remember, M$ PowerPoint has much better performance (I haven't been working with it for over a year or two I believe, but I can't remember such slow transitions).
I reopen the issue
Please have a look if the preparation of the slide become faster in the new presentation engine.
Thorsten, please raise this issue to OOo 2.0 and set it to fixed when you finished with the performance tweaks for the new presentation engine
Reset assigne to the default "issues@openoffice.apache.org".