MC-153712Java using more 100% CPU on macOS/linux
Minecraft 1.13.2 using 10-60% CPU
Minecraft 19w12a - 1.14.3 using 100-300% CPU
Minecraft 1.14.4+ using 100-200% CPU
Confirmed: macOS Catalina/Mojave/High Sierra
Confirmed: MacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- RAM: 8gb
Confirmed: MacBook Pro 15" (2018)
- CPU: Intel Core i7 8750H (6 x 2.2)
- GPU: Radeon Pro 555X 4gb
- RAM: 16gb ram
MacBook is very hot and even turns off during the game.
Environment
OS: MacOS Catalina/Mojave/High Sierra
Java: Last version
MacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- RAM: 8gb
MacBook Pro 15" (2018)
- CPU: Intel Core i7 8750H (6 x 2.2)
- GPU: Radeon Pro 555X 4gb
- RAM: 16gb ram
Linked Issues
is duplicated by2
Attachments11
![[Helper] gaspoweredpick](../../../data/avatars/users/80904.png){kind=small}
Created Issue:
Java using 100-150% CPU
Minecraft 1.13.2 using 10-40% CPU
Minecraft 1.14+ using 100-200% CPUMacBook is very hot and even turns off during the game.
Environment
Minecraft Java 1.14, 1.14.1, 1.14.2
MacOS High Sierra (10.13.6)MacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- ram 8gb
Java using 100-150% CPUJava using 100-200% CPU
Minecraft Java 1.14, 1.14.1, 1.14.2
MacOS High Sierra (10.13.6)
Last version javaMacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- ram 8gb
Minecraft Java 1.14, 1.14.1, 1.14.2
MacOS High Sierra (10.13.6)
Last version javaMacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- ram 8gb
Minecraft Java 1.14, 1.14.1, 1.14.2, 1.14.3-pre1
MacOS High Sierra (10.13.6)
Last version javaMacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- ram 8gb
Minecraft 1.13.2 using 10-40% CPU
Minecraft 1.14+ using 100-200% CPUMacBook is very hot and even turns off during the game.
UPD: 1.14.3 I see a warning in the menu (screen)
Minecraft 1.13.2 using 10-40% CPU
Minecraft 1.14+ using 100-200% CPUMacBook is very hot and even turns off during the game.
UPD: 1.14.3-pre1: I see a warning in the menu (screen)
Minecraft 1.13.2 using 10-40% CPU
Minecraft 1.14+ using 100-200% CPUMacBook is very hot and even turns off during the game.
UPD: 1.14.3-pre1: I see a warning in the menu (screen). My MacBook Pro using openGL 4.1, why i see it
Minecraft 1.13.2 using 10-40% CPU
Minecraft 1.14+ using 100-200% CPUMacBook is very hot and even turns off during the game.
UPD: 1.14.3-pre1: I see a warning in the menu (screen). My MacBook Pro using openGL 4.1, why i see it?
Minecraft 1.13.2 using 10-40% CPU
Minecraft 1.14+ using 100-200% CPUMacBook is very hot and even turns off during the game.
UPD: 1.14.3-pre1: I see a warning in the menu (screen). My MacBook Pro using openGL 4.1, why i see it?
Снимок экрана 2019-06-03 в 20.21.35.png
Java using 100-200% CPU (MacOS)
Minecraft Java 1.14, 1.14.1, 1.14.2, 1.14.3-pre1, 1.14.3-pre2
MacOS High Sierra (10.13.6)
Last version javaMacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- ram 8gb
![[Mod] Michael Wobst](../../../data/avatars/users/37868.png){kind=small}
relates to
is duplicated by
Minecraft Java 1.14, 1.14.1, 1.14.2, 1.14.3-pre1, 1.14.3-pre2, 1.14.3-pre3
MacOS High Sierra (10.13.6)
Last version javaMacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- ram 8gb
Minecraft Java*:* 1.14, 1.14.1, 1.14.2, 1.14.3-pre1, 1.14.3-pre2, 1.14.3-pre3
MacOS High Sierra (10.13.6) / MacOS Mojave (10.14.5)
Last version javaMacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- ram 8gb
Minecraft
1.13.2 using 10-40% CPU
Minecraft1.14+ using 100-200% CPUMacBook is very hot and even turns off during the game.
Minecraft 1.13.2 using 10-40% CPU
Minecraft 19w12a+ using 100-200% CPUMacBook is very hot and even turns off during the game.
BIG TEST: i am in the main menu
18w43a - 19w11b: using 5-10% CPU
19w12a - 1.14-pre3: using 85-110% CPU
Minecraft 1.13.2 using 10-40% CPU
Minecraft 19w12a+ using 100-200% CPUMacBook is very hot and even turns off during the game.
BIG TEST: i am in the main menu
18w43a - 19w11b: using 5-10% CPU
19w12a - 1.14-pre3: using
85-110% CPUMinecraft 1.13.2 using 10-40% CPU
Minecraft 19w12a+ using 100-250% CPUMacBook is very hot and even turns off during the game.
BIG TEST: i am in the main menu
18w43a - 19w11b: using 5-10% CPU
19w12a - 1.14-pre3: using 70-110% CPU
Minecraft Java*:* 1.14, 1.14.1, 1.14.2, 1.14.3-pre1, 1.14.3-pre2, 1.14.3-pre3
MacOS High Sierra (10.13.6) / MacOS Mojave (10.14.5)
Last versionjavaMacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- ram 8gb
Minecraft Java: 19w12a+
OS: MacOS High Sierra (10.13.6) / MacOS Mojave (10.14.5)
Java: Last versionMacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- ram 8gb
![[Mojang] slicedlime](../../../data/assets/gravatar/slicedlime.jpeg){kind=small}
ImportantMinecraft 1.13.2 using 10-40% CPU
Minecraft 19w12a+ using 100-250% CPUMacBook is very hot and even turns off during the game.
BIG TEST: i am in the main menu
18w43a - 19w11b: using 5-10% CPU
19w12a - 1.14.3-pre3: using 70-110% CPU
Minecraft 1.13.2 using 10-40% CPU
Minecraft 19w12a+using 100-250% CPUMacBook is very hot and even turns off during the game.
BIG TEST: i am in the main menu
18w43a - 19w11b: using 5-10% CPU
19w12a - 1.14.3-pre
3: using 70-110% CPUMinecraft 1.13.2 using 10-40% CPU
Minecraft 19w12a+ - 1.14.3-pre4 using 100-250% CPUMacBook is very hot and even turns off during the game.
BIG TEST: i am in the main menu, window mode
18w43a - 19w11b: using 5-10% CPU
19w12a - 1.14.3-pre4: using 70-110% CPU
Minecraft Java: 19w12a+
OS: MacOS High Sierra (10.13.6) / MacOS Mojave (10.14.5)
Java: Last versionMacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- ram 8gb
![[Mojang] Bartosz Bok](../../../data/avatars/users/10122.svg){kind=small}
[Mojang] Bartosz BokUPDATE 1.14.4 pre1:
1.14.4 pre1 Menu: 10-25% CPU
1.14.4 pre1 Game: 100-180% CPUMinecraft 1.13.2 using 10-40% CPU
Minecraft 19w12a+ - 1.14.3-pre4 using 100-250% CPUMacBook is very hot and even turns off during the game.
BIG TEST: i am in the main menu, window mode
18w43a - 19w11b: using 5-10% CPU
19w12a - 1.14.3-pre4: using 70-110% CPU
UPDATE 1.14.4 pre1:
1.14.4 pre1 Menu: 10-25% CPU
1.14.4 pre1 Game: 100-180% CPUMinecraft 1.13.2 using 10-
40% CPU
Minecraft 19w12a+- 1.14.3-pre4using 100-250% CPUMacBook is very hot and even turns off during the game.
BIG TEST: i am in the main menu, window mode
18w43a - 19w11b: using 5-10% CPU
19w12a - 1.14.3-pre4: using 70-110% CPU
UPDATE 1.14.4 pre1/pre5:
1.14.4 pre1/pre5 Menu: 10-25% CPU
1.14.4 pre1/pre5 Game: 100-180% CPU
Minecraft 1.13.2 using 10-60% CPU
Minecraft 19w12a - 1.14.3 using 100-300% CPU
Minecraft 1.14.4-pre1 + using 100-180% CPUMacBook is very hot and even turns off during the game.
Minecraft Java: 19w12a+
OS: MacOS High Sierra (10.13.6) / MacOS Mojave (10.14.5)
Java: Last versionMacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
ram8gbOS: MacOS High Sierra (10.13.6) / MacOS Mojave (10.14.5)
Java: Last versionMacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- RAM: 8gb
![[Mojang] Adrian Östergård](../../../data/assets/gravatar/nighter.jpeg){kind=small}
is duplicated by
@slicedlime, your response makes me want to stop contributing to this community effort to help your company fix its bugs.
UPDATE 1.14.4
pre1/pre5:1.14.4
pre1/pre5Menu: 10-25% CPU
1.14.4pre1/pre5Game: 100-180% CPU
Minecraft 1.13.2 using 10-60% CPU
Minecraft 19w12a - 1.14.3 using 100-300% CPU
Minecraft 1.14.4-pre1+ using 100-180% CPUMacBook is very hot and even turns off during the game.
UPDATE 1.14.4:
1.14.4 Menu: 10-25% CPU
1.14.4 Game: 100-180% CPU
Minecraft 1.13.2 using 10-60% CPU
Minecraft 19w12a - 1.14.3 using 100-300% CPU
Minecraft 1.14.4+ using 100-180% CPUMacBook is very hot and even turns off during the game.
OS: MacOS High Sierra (10.13.6) / MacOS Mojave (10.14.5)
Java: Last versionMacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- RAM: 8gb
MacBook
relates to
OS: MacOS High Sierra (10.13.6) / MacOS Mojave (10.14.5)
Java: Last versionMacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- RAM: 8gb
MacBook
OS: MacOS High Sierra (10.13.6) / MacOS Mojave (10.14.5) / macOS Catalina (10.15.4)
Java: Last versionMacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- RAM: 8gb
OS: MacOS
High Sierra (10.13.6) / MacOS Mojave (10.14.5) / macOS Catalina (10.15.4)
Java: Last versionMacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- RAM: 8gb
OS: MacOS Catalina/Mojave/High Sierra
Java: Last versionMacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- RAM: 8gb
OS: MacOS Catalina/Mojave/High Sierra
Java: Last versionMacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- RAM: 8gb
MacBook Pro 15" (2018)
- CPU: Intel Core i7 8750H (6 x 2.2)
- GPU: Radeon Pro 555X 4gb
- RAM: 16gb ram
UPDATE 1.14.4:
1.14.4 Menu: 10-25% CPU
1.14.4 Game: 100-180% CPU
Minecraft 1.13.2 using 10-60% CPU
Minecraft 19w12a - 1.14.3 using 100-300% CPU
Minecraft 1.14.4+ using 100-180% CPUMacBook is very hot and even turns off during the game.
Minecraft 1.13.2 using 10-60% CPU
Minecraft 19w12a - 1.14.3 using 100-300% CPU
Minecraft 1.14.4+ using 100-200% CPUMacBook is very hot and even turns off during the game.
Minecraft 1.13.2 using 10-60% CPU
Minecraft 19w12a - 1.14.3 using 100-300% CPU
Minecraft 1.14.4+ using 100-200% CPU
Confirmed: macOS Catalina/Mojave/High Sierra
Confirmed: MacBook Pro 13" (2017)
- CPU: Intel Core i5 7360U
- GPU: Intel Iris Plus 640
- RAM: 8gbConfirmed: MacBook Pro 15" (2018)
- CPU: Intel Core i7 8750H (6 x 2.2)
- GPU: Radeon Pro 555X 4gb
- RAM: 16gb ramMacBook is very hot and even turns off during the game.
relates to
![[Helper] Johnibur](../../../data/avatars/users/28381.png){kind=small}
Java using100-200% CPU (MacOS)Java using more 100% CPU (MacOS)
![[Mod] violine1101](../../../data/avatars/users/92858.png){kind=small}
Java using more 100% CPU(MacOS)Java using more 100% CPU on macOS/linux
![[Helper] Misode](../../../data/avatars/users/93314.png){kind=small}
![[Mod] turbo](../../../data/avatars/users/92867.png){kind=small}
Every 1.14 build has been at 50% and up, never below, during idle of the client, as well as in-game. On MacBook / MacBook Pro / iMac.
Just tested it yet again in 1.14.3 pre-1, and it's no different.
Linux users are also reporting this, it's not limited to Mac.
The fans on the system go mental, just trying to run the game for an hour. Unlike any mc version before.
https://imgur.com/a/ndhHAAp
Floris, As part of the test, I went to the map and pressed ESC, watching the processor. The problem is that at 1.13 I played comfortably, the MacBook did not warm up so much, and did not turn off, at higher graphics settings. In 1.14 I have the minimum graphics settings, the MacBook heats up and turns off. Sorrry my english, im using google translate
Yep, me too. High CPU usage with 1.14 on MacBook Pro 15", 2018
Mojang please answer? Very unpleasant when the MacBook turns off. At 1.13 everything was fine
Yes, it is well known that CPU usage is enormously high in 1.14 compared to 1.13.2.
I think this issue is related to: https://bugs.mojang.com/browse/MC-138550
Kamil, my minecraft server on Lunix works well. The client on the macos does not lag, does not hang, everything is fast and healthy. But on MacOS, the processor is 100-300% loaded and the laptop heats up very quickly, and turns off after a while. There are such problems in Windows, otherwise it would have been fixed long ago. I think this is a client problem on MacOS.
1.14.3 pre 2 doesn't address this by the way.
I still get 1.12.2 and 1.13.2 running without hitting 25% during stress, and fans dont even kick in.
1.14.3 pre 2 on macbook pro 2016 and imac 2017 and two older linux boxes, and it is 55% and up, rpm of fans blow to 3500 and things are only climbing, activity monitor showing other clients running at 12% 10% 19% 22% .. and 1.14.3 pre 2 at 492%
It's a clear difference.
I rather not have the fans on 24/7 for just running a singleplayer session or a server for a friend, or whatever i do in 1.13.2 without any stress to the system.
BIG TEST: i am in the main menu
18w43a - 19w11b: using 5-10% CPU
19w12a - 1.14-pre3: using 70-110% CPU
this problem appeared 19w12a
1.14.3-pre4 the problem is not fixed
Playing Minecraft on my 13" MacBook Pro without any mods typically drains the battery down from 100% to around 30% after one hour. This is anecdotal, but I don't remember Minecraft using that much battery life before 1.14. I noticed the excessive fan noise as early as the first 1.14 snapshot.
greedino, It is obvious. If the game consumes 200-300% CPU, then naturally the MacBook quickly heats up and discharges. For me, the big problem is that it turns off due to heat during a long game. Hopefully the developers will start working on this issue soon.
I'm on an oldie iMac (2011) playing on Java and 1.14, and it heats up too, mostly on the top part, you couldn't keep your hands on it for too long. It's so hot I have to pause it for a while cause I'm afraid to push it too far.
1.14.4 pre1
Menu: 10-25% CPU
Game: 100-180% CPU
mb. reopened?
Yeah, game still gets up to 200% in the larger window, 100% in the smaller one.
UP 1.14.4-pre5
1.14.4 pre1/pre5 Menu: 10-25% CPU (its god)
1.14.4 pre1/pre5 Game: 100-180% CPU (its not okay)
Still don't know why this hasn't been reopened when it hasn't been fixed. My report even got closed as a duplicate.
The fact that a computer game uses up computing resources when in-game is not a bug.
But after all, in the old versions of the game, everything was fine, and here the problem is regardless of the configuration of the iron.
slicedlime, look up comments
My MacBook Pro 13 2017: Intel Core i5 7360U (2 x 2.3), Intel Iris Plus Graphics 640, 8gb ram
Comments: MacBook Pro 15 2018: Intel Core i7 8750H (6 x 2.2), Radeon Pro 555X 4gb, 16gb ram
" The fact that a computer game uses up computing resources when in-game is not a bug."
It's not unreasonable to assume as more content is added to the game, the resources required for it will go up. If you are having performance issues, I have some suggestions that come from personal experience:
@[Helper] Matthew
I do all of that and even then, my 2017 MBP (16 GB Ram) gets too hot to touch above the keyboard, even in 1.14.4 prereleases.
1.14 simply should not be this unoptimised for the mac, to the point that it is unplayable for some users (especially when from 1.13 to 1.14, the official requirements for the game did not change).
@[Helper] Matthew. My settings:
MacBook Pro 13 2017: Intel Core i5 7360U (2 x 2.3), Intel Iris Plus Graphics 640, 8gb ram
)
using CPU (game): 100-180% (ITS NOT NORMAL)
using CPU (menu): 10-25% (Mojang tnx for fixing
Neither the game settings nor the hardware reduces the CPU using. At Christopher Patrtan MacBook is several times more powerful than mine and the problem persists. The problem is not that the game lags, everything works fine at 60 fps. The problem is that the game consumes a lot of CPU resources, the laptop heats up, the cooling does not cope
@[Helper] Matthew
Even with the render distance at 2 chunks it still consistently stays around 80-110% CPU usage, and that's after the 250% when entering the world. That's with all the other settings down like OP has in the comment above. My computer specs are in the bug report I made that was closed as a duplicate of this one, which was made after mine. Still don't entirely get that, but as long as the issue is being taken care of I'm not troubled.
As OP has stated, the problem is the computer heats up; If I put my hand near it, I can feel the hot air being blown out by the fan, which is also very audibly working pretty hard. The cause of this behavior is the abnormal CPU usage. Now, this is not something that was an issue in 1.12, so I'm inclined to believe that this is a bug, introduced somewhere around 1.13.2 from what I've recorded of trying to figure it out.
I find it completely unacceptable that we are being told to do things to mitigate the problem that we've already tried and found to not work. Turning down the render distance does not work. Turning down the resolution does not work. Bringing the graphics settings down does not work. The only thing that works is reverting to a version that does not have the bug.
Even with 640x480, max 60 FPS, render 5 chunks, fast graphics, VSync off, clouds off, particles off, smooth lighting off, entity shadows off, and biome blend off, just standing in a world is ~100% of CPU. Loading the world gets up to 340% CPU. Doing anything (in a world or in menu) is ~50-100% CPU for the launcher as well. That's almost as much as a 300+ modpack in 1.12.2, which is simply unacceptable.
That's just Vanilla 1.14.4 Pre-Release 6 on a 2017 MacBook Pro.
It's the middle of December, 1.15 is out, and guess what's still not fixed? Minecraft eats my CPU, meaning that I can't play it. Mojang, seriously, reopen this.
NOT FIXED 1.15.1
1.15.2 also has the bug.
So, what are we supposed to do now since it's been marked as fixed when it isn't? How do we get this reopened and properly seen to?
PROBLEM SOLVER FOR ME
I used a software nammed cputhrottle (a bit hard to install and to understand) to cap my Minecraft CPU use to 100%, it works better than I expected, i have 60fps Good Quality with Macbook pro 15'' 2018, no overheating, no fan noise. Enjoy !
Hey. Any news on that? I assume that somebody from dev team can reproduce this but anyway I'm attaching a shapshot of Minecraft in idle mode: Main-2020-04-10.snapshot
Alexey, what is it?
p.s I have already scored. No one is going to correct processor consumption on the Mac OS, alas.
> Alexey, what is it?
@Gobbi, it's YourKit CPU snapshot of Minecraft in idle mode (in menu). I guess someone in Mojang should be familiar with such stuff.
> No one is going to correct processor consumption on the Mac OS, alas.
We shouldn't yield on their ignorance.
Surely they'll get around to it eventually, right? I mean, it'd be a shame to force paying customers to be unable to play past 1.12.2 just by leaving a reported problem unfixed. Certainly they can't have forgotten about us.
Backhanded remarks aside, I'm kinda starting to lose hope, too.
Lurker here, also frustrated with +100% cpu usage from innocuously launching the game with no further interaction, sharing my findings of in-game configuration that resulted in dropping in-play cpu usage down to around 20%, in the hope it helps someone:
MacBook12,1 - 8 GB 2.7 GHz Dual-Core Intel Core i5 running macOS Catalina 10.15.4
Minecraft 1.15.2, Oracle Java Version 8 Update 241, -Xmx1G.
Graphics: Fast; Smooth Lighting: OFF; VSync: ON; Brightness: Moody; Fullscreen: ON; Mipmap Levels: 4; Render Distance: 12 chunks; Max Framerate: 30fps; View Bobbing: OFF; Clouds: OFF; Particles: Minimal; Entity Shadows: OFF.
Dropping the max frame rate afforded the most noticeable benefit, and allocating more than 1GB memory seemed pointless as it anecdotally used no more than 500MB in play.
Can confirm for MacBook Pro 16" Base Model, Late 2019. 20w19a confirmed. Fans running and overheating. This is killing my computer so in the meantime I will be playing 1.8.9. Mojang this is a serious issue for MacOS users - please fix it!
Can confirm for 20w20a & 20w20b. CPU: 1.13.2 - 70%, 1.14 - 400%, 1.15 - 300%
I am a speedrunner but this bug prevents me from speedrunning. This is a HUGE bug; PLEASE FIX IT MOJANG!
I am not even using a Macbook, i am using a Lenovo Y520 with Windows 10, and i am having this issue as well. Minecraft java CPU usage is passing 100% at sometimes. This was not happening in 1.13.2, also not much happening in 1.14.4 for me. But with 1.15.2 it is happening, and starts to lag my computer when this happens. Would be nice if it is fixed.
I'm not sure if it helps, but I attached a debug report in 20w21a. The game doesn't quite seem to keep up, even after the span of around 5 minutes.
for the meantime, try to set graphics from fancy to fast, minimal particles and clouds off. Also try and turn off other apps in the process
This is insane. I am experiencing 600% CPU from opening an application. The elapsed time on this project is crazy! I cannot play the game anymore! 1.14.4 is the worst. My fans are running like crazy! Mojang please do something about this! We cannot play minecraft like this! Even with the graphics from fancy to fast, minimal particles and clouds off and turning off other apps in the process does not work. Its not a computer issue, but a HUGE BUG THAT NEEDS TO BE FIXED IMMEDIATELY.
I feel like this bug is getting worse and worse. My fans were running at FULL BLAST when I was playing 1.14.4 & 1.15.2. 1.13 is ok, and the snapshots are heating up my computer only slightly above normal. PLEASE FIX, as I can no longer play 1.14 or 1.15! I am sorry that I keep adding comments but the elapsed time on this bug is massive. PLEASE FIX in the latest snapshots and consider adding a "1.14/1.15 NEW" so that we speedrunners are not confined to only 1.13 and 1.16.
I have a iMac, and sometimes, the fan gets really loud. I have a 3.6 GHz Quad-Core Intel Core i3. When I'm playing, a process called java uses up 350% cpu while the game is loading, but about 100% in game, about as much as playing chess against the computer (chess doesn't cause the loud fan noise). I wonder why only Minecraft causes the fan noise.
This happens in 20w27a or not?
This bug is present in Mojave 10.14.6 as well on 1.16 - 1.16.2. Bug came out of nowhere.
On Unix systems the total CPU is the sum of all cores, each core using 100%
If on top of that your laptop is overheating (due to dust in the air vents for example) then the kernel starts "using" more CPU so it has time to be idle
Could this be related to the game building data fixers? From my understanding, the game builds these every time it starts up, which is a very multi-threaded CPU-heavy operation. Furthermore, the game does not wait for it to complete before launching to the title screen, but after it is complete, the high CPU usage goes away.
I am buy new MacBook Pro (Apple M1) - this problem fixed!) Minecraft run max remains cold, ans don't turn on
This is not how performance bugs should be fixed. Trust me.
Hi!
Does this issue still occur to anybody after the last update?