I just updated to 10.13.6 tonight.
After rebooting, I got a warning from cleanmymac that I was running out of memory.
I got into Activity Monitor and found yarascanservice using 99gb - then to 100gb before I Force Quit the application.
I just wanted to notify that there may be a memory problem with this application/service.
Thank you,
Myrhillion
iMac, macOS High Sierra (10.13.6), Late 2014 Regina 5K iMac
I saw a YaraScanService processing using lots of CPU on my new MacBook after I updated to 10.13.6. When I look in Console/System Reports, I found a diagnostic report about it:
======
Date/Time: 2018-07-13 16:17:34.364829 -0700
OS Version: Mac OS X 10.13.6 (Build 17G65)
Architecture: x86_64
Report Version: 19
Command: YaraScanService
Path: /System/Library/CoreServices/MRT.app/Contents/XPCServices/YaraScanService.xpc/C ontents/MacOS/YaraScanService
Version: 1.0 (1)
Build Version: 1
Project Name: MRTBinaries
Source Version: 43000000000000
Parent: launchd [1]
Responsible: MRT [1397]
PID: 1482
Event: cpu usage
Action taken: none
CPU: 90 seconds cpu time over 157 seconds (57% cpu average), exceeding limit of 50% cpu over 180 seconds
CPU limit: 90s
Limit duration: 180s
CPU used: 90s
===========
It seems clear that it is now a part of CoreServices and they added a check to limit its CPU usage to 90 seconds of CPU in 180 seconds.
Your mileage may vary.
Duration: 156.63s
Steps: 162
Do you think that it is possible that it scans during the installation process then self deletes?
What was in the MacOS folder though?
? Are you talking to me or someone else?
Lanny wrote:
Do you think that it is possible that it scans during the installation process then self deletes?
That's a good point. It might do that.
I've already diagnosed the issue and submitted a bug report via my developer account. There's no acceptable solution at this time, and I do not want to disable SIP and disable the service entirely.
How many files are in your Downloads folder? Thousands?
Try moving them elsewhere.
Dumping the downloads folder contents worked for me as well.
yarascanservice using 100gb of memory..
