Graph: Obsidian consistently eating 8-20% CPU at idle

mitzimbj · June 23, 2020, 9:37pm

Steps to reproduce

Launch Obsidian
Wait
Watch it eat 8-20% CPU

Expected result

When in the background, I don’t expect 8-20% CPU usage

Actual result

8-20% CPU Usage

Environment

Operating system: macOS 10.15.5
Obsidian version: 0.7.3

Additional information

None

WhiteNoise · June 23, 2020, 9:54pm

please let us know if you can think of anything else that can help us to reproduce this.

ksandvik · June 23, 2020, 10:18pm

Is this over time, just now the use is minimal with my MacOSX 10.14.6:

mitzimbj · June 23, 2020, 10:25pm

Here’s mine. I launched an hour or so ago, and has eaten up all that CPU time.

mitzimbj · June 23, 2020, 10:38pm

Here’s my UI. It may be a rendering thing. I tried loading without the customCSS, but the CPU profile didn’t change.

WhiteNoise · June 23, 2020, 10:41pm

Thanks. I may suggest to selectively close things to pinpoint the issue.
Start with keeping the graph closed. Then try to use only the default css.

WhiteNoise · June 23, 2020, 10:47pm

how many notes do you have in your vault?

Silver · June 24, 2020, 3:25am

Weird, so it sounds like the graph view is eating CPU while you’re not interacting with it…

Let us know if graph view is the cause; we can debug from there. Thanks!

mitzimbj · June 24, 2020, 4:54am

not many, around 100 or so.

WhiteNoise · June 24, 2020, 4:55am

@mitzimbj what model/year is your mac?

It’s useful to figure out if you are redering using the CPU or GPU.

mitzimbj · June 24, 2020, 4:56am

It’s the graph.

mitzimbj · June 24, 2020, 4:59am

It’s a 2019 15" MBP and it’s eating both CPU and GPU time.

Licat · June 24, 2020, 5:43am

Graph view stops re-rendering about 1 second after nothing has changed - That includes zooming, panning and dragging nodes around.

For me at least, the CPU and GPU usage stops. If it doesn’t for you, can you open the developer tools and take a performance sample for 2 seconds.

Here’s what mine looks like: You can see at the beginning, after I dragged the graph, it renders for about 1 second, the graph on top has many yellow peaks. Then it stops the graph becomes flat at the bottom.

mitzimbj · June 24, 2020, 2:10pm

I have a saved performance profile I captured. It’s 45 seconds.
After starting the capture, I did the following things, with a few seconds in between:

Opened the graph
Move the graph to the side bar
Resized the graph.
Sat idle

At the end of the 45 seconds, Obsidian was constantly eating 9% of my CPU.

The file is 10MB, so I can’t share on the forums. DM me in Discord (same name) and we can figure out how to get file to you securely.

scmwiz · June 25, 2020, 7:19am

I see the same thing. About 10% cpu usage by Obisidian Helper (GPU). Th graph view is shown in one of the panes (1/4 window) but no other interaction. 5 year old MBP, running Mojave & Obsidian 0.7.3. 133 .md files. The usage goes down as soon as I switch away from the graph view. I didn’t do anything more than clicking on cmd-G. No zooming/panning either.

ttunguz · June 30, 2020, 4:48pm

I have the same issue. Without any files open, CPU on a MBP 16inch (2020) with i9 processor and 16GB of ram is > 100%.

Console logs here

Dor · June 30, 2020, 5:34pm

Anyone have this problem who doesn’t have a MPB?

WhiteNoise · June 30, 2020, 5:48pm

We should have a fix for this in 0.7.5