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LibreOffice Impress very slow

asked 2020-05-02 02:47:09 +0200

dominic03 gravatar image

So I started LibreOffice Impress to make a presentation for school, but it ran extremely slow on even the most basic tasks (IE typing, formatting text)

The CPU usage seemed to constantly cap out at 25%.

Version: 6.1.5.2 CPU: x4 1.5GHz ARM Cortex-a72 -- overclocked to 2.147 GHz RAM: 4GB LPDDR4 Storage device: 32GB microSD card C10 U1 GPU: VideoCore 6 (Raspberry Pi 4)

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Who's distro are you using? you may want to look here, http://pi.wecraftalot.com/ The maintainer of this distro uses pi's extensively and has been making optimizations where he can. He might be better to ask about this.

AdmFubar gravatar imageAdmFubar ( 2020-05-03 01:41:47 +0200 )edit

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answered 2020-05-02 09:27:49 +0200

heldzzz gravatar image

CPU usage of 25 % in a quad core setup usually means, that one of the four cores is totally busy. Since Impress is not parallelizing (running on more than one CPU core) I think there's nothing you can do except running it on better hardware ;-). Other suggestions would be to decrease CPU load of Impress somehow. Is it really Impress that's blocking the CPU (have a look in top for example)? Which distribution are you using? Is Impress maybe rendering in software and not on the GPU? Is it helpful to decrease the screen resolution (that would point into the software rendering assumption)?

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With the CPU thing, that's what I thought was happening. It is in fact 'soffice' taking the CPU. I am using Raspbian; I don't know how I'm rendering, but I can try the resolution thing later.

dominic03 gravatar imagedominic03 ( 2020-05-03 02:44:02 +0200 )edit
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Asked: 2020-05-02 02:47:09 +0200

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Last updated: May 02