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mcastillo5125

Q: Version 9.0 (10601.1.56.2) Causing high CPU Usage, how to prevent?

I installed the Version 9.0 (10601.1.56.2) update yesterday, now my MacBook Pro (MacBook Pro (Retina, 15-inch, Mid 2014)) fan is out of control. I pulled an activity report and Safari is using a high percentage of cpu and multiple threads. How can I fix this?

MacBook Pro

Posted on Oct 2, 2015 6:36 AM

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Q: Version 9.0 (10601.1.56.2) Causing high CPU Usage, how to prevent?

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  • by Linc Davis,

    Linc Davis Linc Davis Oct 2, 2015 1:08 PM in response to mcastillo5125
    Level 10 (207,973 points)
    Applications
    Oct 2, 2015 1:08 PM in response to mcastillo5125

    From the Safari menu bar, select

              Safari â–¹ Preferences... â–¹ Privacy â–¹ Remove All Website Data...

    and confirm. Test.

  • by dwight.d.s,

    dwight.d.s dwight.d.s Oct 5, 2015 9:15 AM in response to Linc Davis
    Level 1 (0 points)
    Oct 5, 2015 9:15 AM in response to Linc Davis

    I tried this action and haven't noticed any substantial change in CPU usage.  It still seems to work it's way up to 100-200% CPU after only a minute or two.

     

    Dwight

    OS X Yosemite, Apple Macbook Air

    Safari(10601.1.56.2)

  • by Ric Perrott,

    Ric Perrott Ric Perrott Oct 6, 2015 7:59 AM in response to mcastillo5125
    Level 2 (365 points)
    Oct 6, 2015 7:59 AM in response to mcastillo5125

    I am seeing the same exact issue.  Safari 9.0(10601.1.56.2) on Yosemite 10.10.5

     

    Safari routinely climbs to over 200% CPU and stays there until I quit.

  • by dwight.d.s,

    dwight.d.s dwight.d.s Oct 6, 2015 12:28 PM in response to dwight.d.s
    Level 1 (0 points)
    Oct 6, 2015 12:28 PM in response to dwight.d.s

    Update - Since taking the steps provided by Linc Davis, and in my case a reboot, I have been able to run Safari without any significant CPU consumption.  Not sure if I just didn't wait long enough for the purge of website data to complete, but it is much better now.

     

    Thanks,

    Dwight

    OS X Yosemite, Apple Macbook Air

    Safari(10601.1.56.2)

  • by pktspkts,

    pktspkts pktspkts Oct 10, 2015 4:39 AM in response to mcastillo5125
    Level 1 (0 points)
    Oct 10, 2015 4:39 AM in response to mcastillo5125

    I had a similar problem after updating Safari. I have isolated this to the bookmarks. Try doing this:

    1. Shutdown Safari

    2. From cli: mv ~/Library/Safari/Bookmarks.plist ~/Desktop/

    3. Startup Safari

     

    After removing the bookmarks file I do not get the high cpu on Safari. So either something is wrong with my bookmarks file or something else around it. I use xmarks for bookmark syncing and that is not functioning too well either.

  • by Anastasis Andronidis,

    Anastasis Andronidis Anastasis Andronidis Oct 13, 2015 3:07 AM in response to mcastillo5125
    Level 1 (4 points)
    iPhone
    Oct 13, 2015 3:07 AM in response to mcastillo5125

    I followed Linc Davis suggestion, I also restarted my Mac as dwight.d.s suggested but my Safari still going berserk with 130+% CPU :/

     

    What is going on with quality in Apple lately... I am very disappointed...

  • by Ric Perrott,

    Ric Perrott Ric Perrott Oct 13, 2015 11:28 AM in response to Anastasis Andronidis
    Level 2 (365 points)
    Oct 13, 2015 11:28 AM in response to Anastasis Andronidis

    I have tried both removing bookmarks, as well as removing web site data. Neither has helped at all. If I am running Safari, within 10 mins it will start to wind the CPU up over 200% and it will stay there until I quit Safari completely.

     

    I have now switched over to using Google Chrome as my default browser and I have seen no issues whatsoever.

  • by Anastasis Andronidis,

    Anastasis Andronidis Anastasis Andronidis Oct 14, 2015 6:22 AM in response to mcastillo5125
    Level 1 (4 points)
    iPhone
    Oct 14, 2015 6:22 AM in response to mcastillo5125

    Did anyone report that to apple bugs?

  • by Dr. Space Cowboy,

    Dr. Space Cowboy Dr. Space Cowboy Oct 14, 2015 2:39 PM in response to Linc Davis
    Level 1 (10 points)
    Oct 14, 2015 2:39 PM in response to Linc Davis

    I was having the same problem... Safari CPU usage at 120-130% after a couple of minutes, consistently.

     

    I rebooted and updated Flash, and it was better, but still after 10 mins Safari was back at 120-130% CPU.

     

    I then tried your tip, and Safari actually hung when I tried to quit after removing website data... tried it again, and same thing. I then rebooted, and removed website data once more and this time Safari didn't hang when quitting.

     

    I rebooted once more for good measure, and Safari CPU usage now seems back to normal.

     

    Thanks for the workaround Linc, kind of a bizarre bug... something Apple should have caught.

     

    EDIT: I spoke too soon... just took a little longer this time (maybe 15 minutes), but Safari CPU usage again went up to ~130%. I may be imagining it, but it seems to depend on what web sites you visit...

  • by Dr. Space Cowboy,

    Dr. Space Cowboy Dr. Space Cowboy Oct 14, 2015 2:55 PM in response to Anastasis Andronidis
    Level 1 (10 points)
    Oct 14, 2015 2:55 PM in response to Anastasis Andronidis

    I just reported it using Apple's feedback mechanism... don't have time right now to submit a formal bug report.

  • by robbsterino,

    robbsterino robbsterino Oct 15, 2015 9:55 AM in response to Ric Perrott
    Level 1 (0 points)
    Oct 15, 2015 9:55 AM in response to Ric Perrott

    I didn't want to swtich to Google Chrome, but that is the only alternative based on what I'm reading in this thread. Safari always takes 233% CPU utilization on a 6-month old MBP, with no Safari extensions enabled. Apple has had weeks to fix this but I see no updates offered.

  • by jocker,

    jocker jocker Oct 16, 2015 10:41 AM in response to mcastillo5125
    Level 1 (0 points)
    Oct 16, 2015 10:41 AM in response to mcastillo5125

    I was seeing the exact same behavior and was able to reproduce the CPU spikes every time I opened a new tab showing the default Favorites/Frequently Visited sites.  No idea what the actual fix is, but I was able to work around it by going to Safari > Preferences... > General and setting "New windows open with" and "New tabs open with" both to "Homepage", and then I set my homepage to https://www.google.com.  So far so good.  I haven't had any further CPU spikes.

  • by robbsterino,

    robbsterino robbsterino Oct 16, 2015 11:40 AM in response to jocker
    Level 1 (0 points)
    Oct 16, 2015 11:40 AM in response to jocker

    Thank you for putting this suggestion up. I tried it just like you suggested, but soon the CPU utilization spiked up in the 250% range again, even after quitting / restarting the app. So I'm thinking this is not a solution. Has yours continued to not spike?

  • by jocker,

    jocker jocker Oct 16, 2015 2:49 PM in response to robbsterino
    Level 1 (0 points)
    Oct 16, 2015 2:49 PM in response to robbsterino

    Shoot, that's too bad it didn't work for you.  I've been using Safari for a few hours now and its CPU usage is currently sitting at 1.6%.

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