High CPU Usage!

Hello

I did a fresh Ubuntu install (Ubuntu 15.10, i'm using kernel 4.2 RC8 with open source driver for my HD 7770)

Screen:
http://i.imgur.com/ZyHLTBP.png

And XOrg log in attachment

 

I'm also experiencing this on 15.04 Ubuntu Gnome. Doesn't seem to be laggy though

 

I'm also seeing high CPU usage on open: Ubuntu 14.04

 

I'm also experiencing Unity taking a whole core for itself

 

Also experiencing high CPU usage in an empty project. Intel i5 with HD4000 and Ubuntu Gnome 15.04

 

I'm also getting this on arch linux. The windows version running on wine takes about 40~50% so it looks like there's something going on.

 

This is a known issue - idle cpu usage is (much) higher than it needs to be.

 

Same problem in login screen (I'm on xubuntu 14.04) - top reports 100% CPU usage.

 

in debian 8

 

http://forum.unity3d.com/threads/unity-on-linux-release-notes-and-known-issues.350256/

 

Still less CPU usage than chrome's pepper flash.

Mmm.. maybe I'll wait to give the linux editor a shot.

 

OK, since everyone's chiming in, I also experience this bug, Arch Linux.

 

Thanks. I hadn't bothered to read it yet. Like everyone else apparently.

 

I also have 100% of utilization of whole core when Unity is doing nothing.
I even read known issue report and failed to realize that "Idle CPU usage is higher than it should be" means 100% for whole core.

 

Hopefully people aren't using apple machines to test the linux editor. For whatever reason, apple decided to go back to dual core... and make models with GPUs more expensive. My 2012 mac is more powerful than the 2015 mac (of the same price). Anyone using a 'modern' Apple computer that they didn't spend at least 3k on will get 50% hardware utilization from this bug if they are running linux

 

Which specific line are you referring to? The iMacs have quads as well as duals.

 

The minis I was looking into desktops for future purchases, but no way will that be from apple. The computers at work couldn't even run the unreal editor lol. It just wouldn't be worth the money I'd need to put in to get a GPU and a decent amount of RAM. I might as well wait for the nvidia pascal

Spoiler: Rant?

I'm putting a new computer off for a while. I'm accepting the reality of population count on dedicated machines. I enjoy CoD because it's fast paced and there's always people playing. On dedicated systems, that is. On PC, the community starts between 50k and 100k, then over a few months drops down to 1k to 4k. It's crazy. On ps3 the call of duty game from 3 years ago has 130,000 people still! I prefer PC for most things, but I am settling for console gaming for multiplayer games. I bought a 3ds solely to play monster hunter and now I'm buying a PS4 solely to play cal of duty. If I wanted the highest player count I suppose xbox one would be the better option, but as long as the games have over 100,000 people there's no trouble in finding games.

 

The high cpu usage is related to the tab "game". when i reduce the size of this tab, the cpu drops to 30% ... sometimes ...

 

I get 100% CPU core-cycling while on the startup splash screen


Once inside the editor it settles at 40% on all cores

 

I'm experiencing this same bug. It makes the editor unusable as cpu gets really hot and the fan is running on high speed all the time.

Minimizing or closing game or scene view has no effect.

Attached: Top screenshot with cores. (The computer is a laptop)

 

Very grateful for the Linux port, all!

I have the same issue, Debian Sid 64-bit on a Thinkpad T410, Nvidia driver 340.96, Unity Editor 5.3.1f1. Varies between a constant 50% and 100% usage of a single core, even when I have nothing in it running.

 

6 month now and issue still exist.... c'mon

Unity 5.3.3f1+20160223

 

Same here on fedora 23, ivy bridge i5, 8GB of ram, gtx 650ti.

 

One of cores works at 100%.
Ubuntu 14.04.
Intel(R) Celeron(R) 2957U @ 1.40GHz,
Haswell-ULT Integrated Graphics Controller

 

Could be worse, at least we can run it on Linux

 

Same issue. Ubuntu 15.04 x64, Intel i5 Quad core, HP Spectre laptop, 8Gb RAM.

100% regardless of splash screen, idle editor, new project prompt, etc.

 

I'm only getting a steady 30% in 5.4, but if I open an asset store window it quickly bumps random cores to 100% until I close it again. I didn't try 5.3.4 yet, so I can't say if it's fixed there.

Edit: Spoke too soon, CPU usage still occasionally jumps to (and stays at) 100% on one core.

 

100% cpu, and Unity can't start. I see only 2 windows: one gray, and second dark green with unity logo.

All versions after 5.2.2f1, including latest 5.4.0b10 are affected. 5.2.2f1 without this bug, but has some over interesting bugs

Centos 7, Core2Quard, GeForce GTX 275

I see, in release notes:

Release Notes:

• Really actually fix "gray welcome window" issue

Probably it's my bug, and actually it's not fixed.

From
~/.config/unity3d/Editor.log:

Using monoOptions --debugger-agent=transport=dt_socket,embedding=1,defer=y,address=0.0.0.0:56252
Desktop is 1920 x 1080 @ 60 Hz

Selecting FBConfig
GLX_FBCONFIG_ID=237
GLX_BUFFER_SIZE=24
GLX_DOUBLEBUFFER=1
GLX_RED_SIZE=8
GLX_GREEN_SIZE=8
GLX_BLUE_SIZE=8
GLX_ALPHA_SIZE=0
GLX_DEPTH_SIZE=24
GLX_STENCIL_SIZE=8
GLX_SAMPLES_ARB=0
GLX_SAMPLE_BUFFERS_ARB=0
GLX_STEREO=0
GLX_CONFIG_CAVEAT=NONE

Error: execv(npm): No such file or directory

(Filename: /home/builduser/buildslave/unity/build/Editor/Platform/Linux/EditorUtility.cpp Line: 36)

ListPackages failed, output:
Error: execv(npm): No such file or directory

(Filename: /home/builduser/buildslave/unity/build/Editor/Platform/Linux/EditorUtility.cpp Line: 36)

InstallEditorPackages failed, output: process_set_termination_details: error looking up process handle 0x401

installJavascriptPackages failed

(Filename: /home/builduser/buildslave/unity/build/Runtime/Utilities/Argv.cpp Line: 168)


LICENSE SYSTEM [2016320 8:30:12] No start/stop license dates set

LICENSE SYSTEM [2016320 8:30:12] Next license update check is after 2016-03-20T22:23:14

[0320/083012:ERROR:gpu_process_transport_factory.cc(402)] Failed to establish GPU channel.
Error loading file:///%2Fhome%2Fshaggycat%2F.local%2Fshare%2Funity3d%2FPackages%2Fnode_modules%2Funity-editor-home%2Fdist/index.html#/project/recent


(Filename: /home/builduser/buildslave/unity/build/Editor/Platform/Interface/NativeWebViewWindow.cpp Line: 50)

​

 

Fixed by this solution:

http://forum.unity3d.com/threads/unity-of-linux-mint-17-3-doesnt-work.391254/

 

Same problem. 1 core is constantly at 100% usage in 5.3.4

 

Hello here. Got the same problem on Mint 17 with Unity 5.3.

Possible workaround : always stay in Game Mode (in fact, nope. See my edit)

So the problem is about "idle". That's strange, but if you don't want your Unity using 100% of the core, you can just enter Game mode. Unity will be reasonable and drop to ~20-40% CPU (for me).
But you can't exit Game mode : stopping or pausing it will increase the CPU usage again.

I'm not sure this is a good thing, but for the moment it's much more efficient to have a demo running than nothing at all. If you don't need the game screen, you should just make it as small as possible before running it.
--
EDIT : I don't know Unity, I'm still looking tutorials, and I didn't see what you do while in Game mode is removed when exiting Game mode. Not such a good workaround in the end.

 

what do you mean fixed by this solution? are you still talking about the high cpu usage?

also, is anyone NOT having this issue?

 

Would be nice to know about probability that this bug will be fixed in this year. Is it in some queue, if so then it should be bug #1 - that is most cruel problem that makes almost impossible to use it on Linux, and the other bugs should be deferred for later.

 

Any updates to this issue? This is absolutely driving me insane. It spins up my CPU fan really loud while I'm working.

 

Unity3D is using one of my cores 100% in idle. I attached a screenshot showing that.

Personally, I don't feel like this is making a big difference in general performance. I'm running a very big and quiet CPU cooler though, so I don't notice a sudden spike in spin speed.

 

This did turn out to be quite annoying on a Laptop, can confirm.

 

same behavior here...

 

If they wouldn't would they search for "unity high cpu usage" ??

Can someone confirm if it is resolved at 5.4.0b13?

 

it's not fixed with 5.4.0b13

 

5.4.0b13 seems to slightly improve things for me. The CPU usage is high, but it never seems to hit 100% on any core unless I have the game view tab open. This is how it looks in the scene view, with lighting disabled:


Oddly, turning the lighting on in the scene view brings the CPU usage down even more, maxing out at about 50% in my case. Notice how the CPU usage suddenly drops when I enable the lighting:

 

Same thing here, and CPU usage dramatically drops for me when I play a game in the editor to 10-15%

 

Yet another in the High CPU category on a laptop. Makes it unusable because my lap can't take the heat.
Ubuntu 15.10 on Intel® Core™ i7-5500U CPU @ 2.40GHz × 4

 

Arch Linux 5.4f1 from AUR, can confirm, 100% CPU usage only on one core at all times (idle or not). Uninstalling for now, since I'm on a laptop.

 

Hi all, i figured out a workaround by using cpulimit

before
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5772 yifengs+ 20 0 2166256 321184 156624 R 103.8 2.0 0:12.05 Unity

Unity is using 100% of one CPU core, then limit its CPU usage to 20%
# cpulimit -p 5772 -l 20

after
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5772 yifengs+ 20 0 2176208 333740 156700 R 19.4 2.0 0:29.92 Unity

The usage is limited around 20%. Though Unity runs a little slower, but my laptop won't burn my hands any more

 

Here's a perf file I recorded. Obviously I don't have symbols, but as I understand it you can resymbolicate if you have them. This is Unity 5.3.4f1 on Ubuntu 15.10, 64 bit i7. Recorded with
perf record -g -- /opt/Unity/Editor/Unity

 

Would using 'nice' be better than cpulimit (hard limit) ? Can't tested it out sadly, installing Unity again would blow past my metered internet quota >.<

 

nice doesn't work, still over 100% with nice set to +19 (presumably cpu would drop below 100% for unity if I started several other cpu intensive processes but that probably wouldn't help)

If I run cpulimit at less than 50 unity definitely slows (especially when playing) but possibly to get a compromise that generates significantly less heat. Oddly; unregulated, it only seems to go up to around 100 when it's not doing anything, it drops down to around 50 when playing!

 

Not exactly relevant but is there a way to enforce minimum cpu frequency on linux(mint) cause seting the governor to power save doesn't appear to work...

 

Found the solution to setting max-min freq. You need cpufrequtils. This is one more workaround NOT a solution
1 install cpufrequtils
2 go Sudo
3 cpufreq-set -u x (where x is in Mhz e.g 2400000 for 2.4Ghz)
for more help type cpufreq-set -h
Hope this helps. Yes it limits system processing power but you won't waste your battery as fast as possible.

 

Can someone confirm if there is any change in v5.4.0b16 ? Also i currently am at 5.3.4 is it worth upgrading ?? Is the latest stable/better than before or worse?