ENVIRONMENT
MBP (mid 2015) 16GB i7
PROBLEM
After updating Xcode to 9.3, Xcode becomes very very slow and always in high (400%) CPU usage which makes everything get stuck. Just look at those screenshots.
WHEN USING XCODE
After quitting Xcode:
Auto-complete and breakpoint just can't be used. I need to wait tens of seconds until Xcode has a response. It's not endurable.
Relaunch and reboot doesn't work. And before Xcode 9.3, these issues existed but didn't appear so often.
Related
Has someone noticed the same problem?
Currently installed version are macOS Catalina 10.15.1, Xcode Version 11.2 beta (11B41) .
While opening project - sometimes indexing takes to long, simulator does not launch, and all system slows down.
In activity monitor process swift appears and very fast - during couple of minutes it shows 73-90gb memory use, after which i have to restart, computer stops responding.
I am having trouble with working in Xcode, any help is much appreciated.
I have a MacBook pro(mid-2012)with following configuration(8GB RAM, MacOS Sierra, and 512 GB HDD). I updated my Xcode version from 8.2 to 8.2.1. After updating to that version system not responding properly (till 8.2 it works properly), I have to wait 5 or more minutes for one click. So please help me on that to fix that issue. For that performance issue,
Note: I reinstall MacOS twice but getting the same performance issue again and again when I open Xcode before that it works properly.
Steps to Reproduce:
Open Xcode with any existing project and open simulator from Xcode developer tools then you will see that system is not responding properly.
Expected Results:
If it will work till 8.2 then it will also work in Xcode 8.2.1 in MacBook pro
Following is my system configuration and activity monitor results.
CPU Usage
enter image description here
2: https://i.stack.imgur.com/0lEj3.png system configurtion
4: https://i.stack.imgur.com/WdoZW.png before xcode start
after xcode and simulator both starts cpu usage in activity monitor
CPU usage when both are running.
Check your "Activity Monitor" Mac App, monitor which tasks are taking more memory (%CPU). Try to force quit unused apps / tasks. And try again.
Finder -> Applications -> Activity Monitor
I have a macbook pro(middle-2012) in my home, and I can not use it to write the code any more, because it is too slow, I promise, if you replace a newer macbook pro, I think the issue will not comes.
In my company, I use the company's Macbook pro(2015) or Mac Mini(2014 late), with Xcode 8.2.1.
These there will not get slow, improve the configuration of your hardware.
I recently updated my MacBook Pro (2.3 GHz Intel Core i5) from Lion to Mountain Lion and simultaneously upgraded Xcode to the latest 4.5 version. I've experienced one very irritating problem. While programming I'm used to have a couple of tabs opened at a time. Ever since I updated, each time I switch tabs, Xcode freezes up for a bit (a couple of seconds). Does anyone have a suggestion to solve this problem?
I followed a tip on deleting project.xcworkspace to improve performance. Which seamed to help, but only for a short period of time.
It's a common issue and was fixed in XCode 4.5.1.
https://devforums.apple.com/thread/167765?tstart=0
If you have multiple partitions (maybe a backup of Lion was kept) ensure that xcode really comes from the Mountain Lion partition.
The App Store App update for Xcode seems to take the first Xcode.app it finds and will apply any update to that version. In my case it updated the (inactive) Lion partition, even so I booted from the ML partition.
xcode-select did not complain when I tried to change it to the ML version.
So I ended up doing the great housekeeping:
do a chmod 000 /Volume/<old Lion partition>/Applications/Xcode.app
installed a fresh copy on Xcode.app into /Applications
verify the destination of the dock icon (must point to the ML Xcode.app)
My Xcode is now fast as before and it remains fast. You can get the Xcode dmg and the command line tools from https://developer.apple.com/downloads/index.action. I don't think there is a difference in the binaries, but with the DMG I could see where I dropped the Xcode.app.
I found your question before I discovered a partial solution.
As of today, I find XCode 4.6.1 GUI dog slow for my taste, specially considering that I run on a one year old mac, SSD, compile to a 2GB RAM disk and still have 6GB RAM left. Even Eclipse runs lightning fast compared to XCode
4.5.1 did improve something, but after a long time using XCode I do not have any hope for some of its problems being solved ever.
That being said, I have noticed that "Live issues", the main tool bar and all the panels slow down tab switching to same degree. The biggest offender so far are the navigator panels.
Once I got used to a minimalistic Xcode window, layout some specific task tabs, keep a separate window for xibs and learned the shortcuts to enable/disable the panels, I no longer suffer so much with XCode responsiveness, but there is still some lag that can be clearly felt.
Check that there is not heavy coding on ViewWillDisappear.
Also if you have NSURLConnection or any other having delegate methods should not get called while switching tabs.
My Xcode 3.2.6 is hanging up constantly.
While I'm coding with no apparent reason it starts consuming more and more CPU, CPU temperature rises up to 80 celsius, the fan get exhausted and I'm forced to "force-quit" it and relaunch it to be able to continue working...
It start happening this week and nobody else on my project is having the same troubles.
My OS is Snow leopard 10.6.8
Any ideas on what could be happening?
I had the same exact issue with my Xcode 3.2.6 project... Would start out using one core and if I let it sit, would use all 8 cores of my i7 MBP. Very frustrating having to restart Xcode every 5 minutes.
My issue actually was resolved when I removed an iPhone from the Organizer that was running iOS 5.0.1. Xcode was trying to get information from the iPhone, and wasn't able to, since the iOS SDK requires Xcode 4.x
I also removed all the user settings from within the project's *.xcodeproj package as well; not sure if that had additional effect. removing those without removing the iPhone had no effect, though.
Have you tried doing a "clean" on the target? Have you tried checking your disk with Disk Utility?
I've got MacBook Pro 2011, 15" i7 2GHz 8GB Ram 1333 MHz OS X Lion 10.7.2 all updates installed released to this date.
I have done everything what I can to minimize RAM consumpsion and the only problem I've got at this point is when I run Xcode. I had 4gigs of RAM, than bought 8 gigs and always 've got 10-30 MB of free memory after 3-5 minutes of Xcode running and PAGE INS are 300MB - 700MB. I tried to switch to 32-bit running mode but no change. Can anybody help me please?
Yes. One way is to disable indexing, another is to reduce the number of build processes. These are hidden preferences in Xcode 4 which I have detailed here:
Hidden Features of Xcode 4
I've also made a pretty extensive write up for improving and working with Xcode's resource issues:
Why are xcodebuild and Xcode 4.2 so slow?