High CPU usage when idle

Fontbase keeps oscillating between 10% and 30% of CPU usage when idle.

  • Windows 11 x64
  • Windows 11 Pro 22H2 22622.590
  • FontBase version 2.17.5

Hello @joaocrfonseca, thank you for the post, welcome to the forum and sorry for the delay.
Does the increased CPU usage still persist?
Initially it’s an expected process since FontBase is processing and identifying fonts.
Thank you again,
FontBase Dev Team

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yes ik very well bcz i’m aslo a gamer but dw and if you want any type of calculation then plz visit our page basic calculator

same as me, fontbase to take to much cpu resource,

This is also happening on Mac. I’m starting to wonder if FontBase isn’t mining bitcoin with my CPU. This is needs to be fixed. FontBase is the blood of my work, and I feel is having an stroke now.

Hello @ignaciogiri, thank you for the post and welcome to the forum:)
Did you have a chance to have a look at my post above?
How long has this been happening for?
As for mining - if it were true all of us here and FontBase would be filthy rich and flying private jets all over, but for better or worse that’s not the case:) No, there is no mining or anything of that sort, the only situation where this could happen is, as mentioned above, when FontBase is processing the fonts that were loaded into it, which enables not just viewing the fonts themselves, but also using different search parameters in advanced search etc.
Hope this helps,
FontBase Dev Team

I was joking about the mining. I am pushing FontBase a lot since I have 100k fonts deactivated and 2.5k activated. Clearly there are few fonts that may cause some conflicts in which the FontBase Helper (Renderer) won’t stop spinning. I’d like to know how could I identify those conflicts so I can fix it.

Does this help?


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I see, I see, thanks:)
Oh wow, 100k, nice :heart_eyes:
Most likely FontBase is just trying to process all of these fonts, and that’s a lot of font for one FontBase:) It will stop eventually. Some of this processing goes on without stopping you from using the fonts, so even when the fonts are open in FontBase and are fully usable, there are still some things the application needs to figure out about them, and that’s what you’re seeing as the additional CPU usage.
Sorry for the inconvenience,
Hope this helps :pray:

I switched from Fontexplorer x to Fontbase Lifetime and installed it 8 days ago. And the CPU is still ± 31% on my 2019MP. About 10.000 fonts in total, but only ± 15 are activated through Fontbase.

How to solve this?

Hello @Steward, thank you for the post and welcome to the forum :pray:
Given the considerable number of fonts you have it’s taking FontBase a while to analyse all of them, but it should end very soon since it’s already been 8 days. Not a permanent thing by any means.
Please bear with us,
FontBase Dev Team

Thanks Yuriy, good to know. Will see if another week solves this issue.

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Hello @yuriy , The CPU load is still around 30% on both my 2019MBP and 2019MP. Where to start to solve this? I know I have a lot of old useless fonts, how can I track the fonts that causes the CPU load?

All fonts are located on an external Thunderbolt NVME with ±2600 MB/s read & write speed, so that should not be a problem, right?

Thanks, Steward

Hello @Steward, thank you for the update :pray:
The location shouldn’t be a problem, you’re correct.
Are fonts added on that drive regularly, or is there a constant number of them?
Thank you again,

The numbers were constant fro 1,5 months at least.

For a test, With a Hazel rule I now moved all fonts older than creation date 2010-01-01 (about 4.000) to a different folder, not watched by fontbase. There are now 5509 fonts in total, where Google fonts is 5210. So about 300 in the whatched folders.

There were many fonts from 1994 to now, in FontExplorer that was not an issue, so never really sorted it…

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Can Chinese fonts cause the issue? I use several Chinese fonts which are very large off course due to the big number of characters. They are easily 10mb per font weight.

Well, after almost 2 months of font rendering this is solved now. It appears that the FontBase helper is getting overheated when using many folders.
I use to have a subfolder for each font-vendor and a folder per font family, getting a few thousands of folders and 5000 fonts. As a test I removed all folders leaving 5000 fonts in just 1 folder: now CPU is down to below 1% (within 10 minutes).

So the advice of waiting weeks/months was not helping at all. Keeping the folder count low did the trick to solve the CPU issue.

Oh dear, thank you @Steward for the investigation :pray: Sorry for not being to help with this faster :pensive:
Not a common case, but a considerable one for sure. Will make sure to include this information in investigating and resolving any potential future issues.
Sorry again and thank you so so much :pray: