Sourcetree 2.7 (144): High CPU load on Mac OS High Sierra 10.13.2

I recently updated to Sourcetree 2.7 (144) and I've noticed very high CPU load when operating on a Bitbucket HTTPS git repo - just typical commits and pushes.

It first came to my attention when I noticed the fan on my Mac OS High Sierra 10.13.2 machine was blasting after using Sourcetree for just a while. The CPU load in Activity Monitor showed >150%.

Even when it was idle, the CPU load would drift between 60-150%.

The machine specs are MacBook Pro, 2.8 GHz Core i7, 16 GB RAM, 185GB of free disk space on a 1TB SSD.


11 answers

2 votes

We've had a couple reports about this and will investigate shortly. Thanks for the info.

Brian Ganninger
Senior Mac Developer, Sourcetree

Also experiencing this, but only when the interface is visible. If Sourcetree is running, but no windows are open, then it will eventually lower it's CPU usage. But open the main window, and back up to between 100% and 130%.

Screen Shot 2018-01-04 at 15.37.23.png

This is still happening with the latest build (152).

Build 150 fixed it for me. 152 also still good on my side.

I've installed build 152 - and while it seems a bit better, there is still what seems like a high idle CPU around 60%. Additionally, I noticed spindump firing up after running SourceTree. The log file indicated a high rate of idle wakeups:


Date/Time:       2018-01-12 14:22:36.973266 -0500

OS Version:      Mac OS X 10.13.2 (Build 17C205)

Architecture:    x86_64

Report Version:  19


Command:         Sourcetree

Path:            /Applications/

Version:         2.7 (152)

Parent:          launchd [1]

PID:             6935


Event:           wakeups

Wakeups:         45001 wakeups over the last 6 seconds (7027 wakeups per second average), exceeding limit of 150 wakeups per second over 300 seconds

Action taken:    none

Duration:        6.40s

Steps:           3


Hardware model:  MacBookPro11,5

Active cpus:     8


Fan speed:       3539 rpm



Powerstats for:  Sourcetree [6935]

UUID:            BDA3F21B-4C84-312A-93C9-F5FAD260A32E

Start time:      2018-01-12 14:22:40 -0500

End time:        2018-01-12 14:22:42 -0500

Microstackshots: 3 samples (100%)

Primary state:   1 samples Frontmost App, Kernel mode, Effective Thread QoS User Interactive, Requested Thread QoS User Interactive, Override Thread QoS Unspecified

User Activity:   0 samples Idle, 3 samples Active

Power Source:    0 samples on Battery, 3 samples on AC

  2 NSApplicationMain + 804 (AppKit) [0x7fff54ee0f1a]

    2 -[NSApplication run] + 764 (AppKit) [0x7fff54f11d6d]

      2 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 3044 (AppKit) [0x7fff556b2b4c]

        2 _DPSNextEvent + 2085 (AppKit) [0x7fff54f1cf5f]

          2 _BlockUntilNextEventMatchingListInModeWithFilter + 64 (HIToolbox) [0x7fff56c51914]

            2 ReceiveNextEventCommon + 613 (HIToolbox) [0x7fff56c51b96]

              2 RunCurrentEventLoopInMode + 286 (HIToolbox) [0x7fff56c51e26]

                2 CFRunLoopRunSpecific + 483 (CoreFoundation) [0x7fff57939d23]

                  1 __CFRunLoopRun + 1654 (CoreFoundation) [0x7fff5793a626]

                    1 _kernelrpc_mach_port_insert_member_trap + 10 (libsystem_kernel.dylib) [0x7fff7f37f762]

                  1 __CFRunLoopRun + 2427 (CoreFoundation) [0x7fff5793a92b]

                    1 __CFRunLoopDoTimers + 346 (CoreFoundation) [0x7fff5794332a]

                      1 __CFRunLoopDoTimer + 1822 (CoreFoundation) [0x7fff57943afe]

                        1 __CFRepositionTimerInMode + 135 (CoreFoundation) [0x7fff5790e1b7]

                          1 __CFArmNextTimerInMode + 621 (CoreFoundation) [0x7fff5790e66d]

                            1 <User mode>

  1 _pthread_wqthread + 1387 (libsystem_pthread.dylib) [0x7fff7f4c41ca]

    1 _dispatch_worker_thread3 + 101 (libdispatch.dylib) [0x7fff7f2016ed]

      1 _dispatch_root_queue_drain + 515 (libdispatch.dylib) [0x7fff7f201941]

        1 _dispatch_source_invoke + 620 (libdispatch.dylib) [0x7fff7f202018]

          1 _dispatch_continuation_pop + 472 (libdispatch.dylib) [0x7fff7f212e76]

            1 _dispatch_client_callout + 8 (libdispatch.dylib) [0x7fff7f1ffd50]

              1 ??? (Sourcetree + 2746683) [0x102eb693b]

                1 ??? (Sourcetree + 2747263) [0x102eb6b7f]

                  1 ??? (Sourcetree + 2747605) [0x102eb6cd5]

                    1 ??? (Sourcetree + 732931) [0x102ccaf03]

                      1 ??? (Sourcetree + 731468) [0x102cca94c]

                        1 ??? (Sourcetree + 729390) [0x102cca12e]

                          1 ??? (Sourcetree + 1590826) [0x102d9c62a]

                            1 ??? (Sourcetree + 1590312) [0x102d9c428]

                              1 ??? (Sourcetree + 1589609) [0x102d9c169]

                                1 ??? (Sourcetree + 1588912) [0x102d9beb0]

                                  1 <User mode, Effective Thread QoS Default, Requested Thread QoS Default>


  Binary Images:

         0x102c18000 -        0x102fb3fff  com.torusknot.SourceTreeNotMAS 2.7 (152) <BDA3F21B-4C84-312A-93C9-F5FAD260A32E> /Applications/

      0x7fff54edb000 -     0x7fff55d38fff 6.9 (1561.20.106) <7A71ACCF-2DF5-3557-BB22-3A9FC9F71CCF> /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit

      0x7fff56c22000 -     0x7fff56f27ff7 2.1.1 <ADBE7A1B-0402-369C-A6F3-494E8CACD619> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox

      0x7fff578b5000 -     0x7fff57d55fff 6.9 (1450.16) <23F8373A-FA3F-37A2-BA5B-70061BFCCD21> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation

      0x7fff7f1fe000 -     0x7fff7f237ff7  libdispatch.dylib (913.30.4) <7D0E3183-282B-3FEE-A734-2C0ADC092084> /usr/lib/system/libdispatch.dylib

      0x7fff7f36d000 -     0x7fff7f392ff7  libsystem_kernel.dylib (4570.31.3) <D2E842AA-3B8D-31BF-8234-8C1BE11CFE32> /usr/lib/system/libsystem_kernel.dylib

      0x7fff7f4c1000 -     0x7fff7f4ccfff  libsystem_pthread.dylib (301.30.1) <ABA848E1-6978-3B42-A3A7-608B2C36FA93> /usr/lib/system/libsystem_pthread.dylib

Still happening to me in build 152 after upgrading from mac OS Sierra to High Sierra.

I spoke too soon. 152 still has this problem.

Hi @Brian Ganninger I'm also experiencing this problem on build 152. The last few days I've noticed my CPU even sitting as high as 100%. As far as I can tell from using Activity Monitor's "Sample Process" tool, it's all in the NS drawing API, and primarily occurs when I have a repository workspace window open (not just the repo browser). And restarting SourceTree only brings it down from 100% to nearer 30-40%.

It's been almost 2 months since your above message. Can you please provide an update? This issue makes it tough to work without being plugged into the wall outlet, since it drains the battery.

Now that we've wrapped up 2.7 and 2.7.1 we're able to dedicate the next release focused solely on performance and reliability across the board.

Thanks for the update - I look forward to the upcoming releases.

V 158 still with the issue

Also noticed about high CPU usage. To fix this temporary need restart sourcetree.

Process `/usr/libexec/nsurlstoraged` taking too many cpu time, after that Source tree may crash.

I've been noticing SourceTree causing slowness on my Mac too.

SourceTree: 2.7 (144)

OS: OSX Sierra (10.12.6)

Processor: 2Ghz Intel Core i7

Memory: 16GB 1333 Mhz DDR3

Screen Shot 2018-01-01 at 5.47.42 PM.png

Same here, %CPU always between 80 and 100%, decreasing battery life significantly. Restart doesn't help, I have to keep Sourcetree turned off.

I removed the version 2.7 of SourceTree and downgrade to 2.5.3. This version works also with high sierra

I've downgraded to 2.6.3 (134) and it is working for me on High Sierra 10.13.2.

This was a great suggestion - works for me as well.

2.6.3(134) works fine too on Mac OS Sierra 10.12.6

This appears to still be the case on 2.7 build 152, High Sierra. Unlike the initial poster, I see the symptom with SSH repositories present, so it is not specific to HTTPS. It wastes approximately 100% of one CPU all the time while running, idle. Ample disk, ample RAM, a couple of versions back there is no such problem, so I don't think there is anything about the machine causing this problem, but rather only a defect in the current source tree. This is... not ideal.

Unfortunately the only workaround I've found for this is to use a different Git tool when operating on battery.

1 vote

I have the same problem. Over 100% CPU Time. I have to Kill the Process all the time. Version 2.7 (152). MAC OS X El Capital 2.5 GHz Intel Core i7, 16GB DDR3

Happening still on

- macOS 10.13.3 (17D47),  MBP 15" Retina 2015, 2.7GHz 16G RAM 

- with SourceTree 2.7.1 (159) git-embedded 2.5.1 git-lfs 2.3.4 

CPU usage for SourceTree process won't go under 40%, with just 1 repo window open, git+ssh from

I tried system git (2.6) and different other repositories. Waited for 15min to "chill down", but still no less than 40% CPU. Laptop fan is blasting continuously...


I can't use the app anymore. I'll do the archive-download of an older version ...

Too bad, it was such a great app about 1 year ago, when it wasn't probably bloated with all the new fancy (useless?) features :-(

Same issue - SourceTree Version 2.7 152, High Sierra 10.13.2.  Cpu above 100% routinely.  I typically have 2-3 SourceTree windows open - but closing the "extras" and getting down to 1 window doesn't change the cpu consumption.  

Per poster above - downgrading to 2.6.3 (134) works great.

I really start wondering if they mine bitcoins in background... Version 152, still present, almost never going below 100%, raising as far as 270%, putting my machine on its knees...

Still the same situation with the new 2.7.1 (159)...

0 vote
Ling Li I'm New Here Monday

I have the same issue on my Mac OS X El Capitan / 10.11.4, with SourceTree 2.7(152). I've downgraded to 2.6.3(134) and the cpu usage drops back down. 

0 vote
Pavlo Kapynos I'm New Here Tuesday

Me too! It gets to the point that I'm looking for alternative.... Tired of high CPU.

Thanks for doing nothing about it.

Suggest an answer

Log in or Join to answer
Community showcase
Brian Ganninger
Published Jan 23, 2018 in Sourcetree

Tip from the team: workflow and keyboard shortcuts

Supported Platforms macOS Sourcetree has a lot to offer and, like many developer tools, finding and using it all can be a challenge, especially for a new user. Everyone might not love ...

276 views 0 3
Read article

Atlassian User Groups

Connect with like-minded Atlassian users at free events near you!

Find a group

Connect with like-minded Atlassian users at free events near you!

Find my local user group

Unfortunately there are no AUG chapters near you at the moment.

Start an AUG

You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs

Groups near you
Atlassian Team Tour

Join us on the Team Tour

We're bringing product updates and pro tips on teamwork to ten cities around the world.

Save your spot