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OpenSCAD using 15% CPU when idle

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nophead

OpenSCAD using 15% CPU when idle

I noticed the latest Windows snapshot 2017.11.12 (git 7cb1e93) is using 15% CPU when doing nothing and not even visible. Not great on a battery powered laptop. What is it doing?

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kintel

Re: OpenSCAD using 15% CPU when idle

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> On Nov 27, 2017, at 9:04 AM, nop head <[hidden email]> wrote:
>
> I noticed the latest Windows snapshot 2017.11.12 (git 7cb1e93) is using 15% CPU when doing nothing and not even visible. Not great on a battery powered laptop. What is it doing?

My first guess is that this is still related to Automatic Reload: https://github.com/openscad/openscad/issues/1237
Easy to verify by turning off automatic reload.

You already improved this quite a bit by caching the file update checks. It should be possible to optimize further by using filesystem-level watchers, which may be a bit OS-dependent.

-Marius

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nophead

Re: OpenSCAD using 15% CPU when idle

Oh, yes, of course. I am surprised how high it is though. stat must be very expensive.

On 27 November 2017 at 14:40, Marius Kintel <[hidden email]> wrote:

> On Nov 27, 2017, at 9:04 AM, nop head <[hidden email]> wrote:
>
> I noticed the latest Windows snapshot 2017.11.12 (git 7cb1e93) is using 15% CPU when doing nothing and not even visible. Not great on a battery powered laptop. What is it doing?

My first guess is that this is still related to Automatic Reload: https://github.com/openscad/openscad/issues/1237
Easy to verify by turning off automatic reload.

You already improved this quite a bit by caching the file update checks. It should be possible to optimize further by using filesystem-level watchers, which may be a bit OS-dependent.

-Marius

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