why excessive data downloads?
I don't know where to post this. Please let me know if I should post elsewhere. I have a 12GB data cap from Excede satellite ISP thus monitor data use. I get random large spikes of data downloads (rarely uploads) that I can not explain. The largest was 4.3GB of data over 4 hrs. I was at the computer part of that time and did not see anything strange. I do not download videos or other large volumes that I'm aware of. Most of the unexplained data use is 30-130MB over one 5 minute recording period. (As recorded by PeakHour.) Up to 500MB over 5 minutes is not unusual. Only twice has the use been sustained, the above mentioned 4.3GB and a 1.1GB use over 4 hours.
Face book is turned off and used only when we're away from home. Devices are iMac 2009 vintage, MBA 2011 vintage, iPhone 6, iPhone 4, iPad 2, Canon printer, Verizon virtual tower, and a captioning phone. The captioning phone and the virtual tower have been unplugged for over several weeks with no affect on the spurious data use.
Data use skyrockets when the kids come home, but that's explainable. If they turn off their wifi/phone connections it is controlled.
How can I find out where/what/how the large data downloads are happening. An EtreCheck report follows.
Geoff
EtreCheck version: 3.4.6 (460)
Report generated 2018-02-09 16:54:01
Download EtreCheck from https://etrecheck.com
Runtime: 6:55
Performance: Below Average
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Problem: Other problem
Description:
Unexplained data use ranging from 20MB to 4 GB, most in 60-100MB range. (Problem because of satellite ISP with data cap.) Data use recorded by PeakHour coincides with data use by ISP. (Excede) Most unexplained data use is downloaded data. Data use can be when I’m at computer but also happens when no one is home and no devices being used. Timing seems random. Rarely happens during night. Most occur over one 5 minute recording interval in PeakHour. Largest (4.3GB) was from 0800-1200.
iMac (21.5-inch, Late 2009)
[Technical Specifications] - [User Guide] - [Warranty & Service]
iMac - model: iMac10,1
1 3.06 GHz Intel Core 2 Duo (Duo) CPU: 2-core
4 GB RAM Upgradeable - [Instructions]
BANK 0/DIMM0
Empty
BANK 1/DIMM0
Empty
BANK 0/DIMM1
2 GB DDR3 1067 MHz ok
BANK 1/DIMM1
2 GB DDR3 1067 MHz ok
Handoff/Airdrop2: not supported
Wireless: en1: 802.11 a/b/g/n
iCloud Quota: 32.43 GB available
NVIDIA GeForce 9400 - VRAM: 256 MB
iMac 1920 x 1080
ST3500418ASQ disk0: (500.11 GB) (Rotational)
EFI (disk0s1 - MS-DOS FAT32) <not mounted> [EFI]: 210 MB
Macintosh HD (disk0s2 - Journaled HFS+) / [Startup]: 499.25 GB (335.90 GB free)
Recovery HD (disk0s3 - HFS+) <not mounted> [Recovery]: 650 MB
OPTIARC DVD RW AD-5680H ()
USBBus
Apple Computer, Inc. IR Receiver
USBBus
Apple Inc. BRCM2046 Hub
Apple Inc. Bluetooth USB Host Controller
USB20Bus
Apple Internal Memory Card Reader
Canon MX920 series
USB20Bus
Apple Inc. Built-in iSight
macOS High Sierra 10.13.2 (17C88) - Time since boot: about 12 days
Mac App Store and identified developers
com.adobe.ARM.[...].plist
/Applications/Adobe Reader.app/Contents/MacOS/Updater/Adobe Reader Updater Helper.app/Contents/MacOS/Adobe Reader Updater Helper
Executable not found!
One orphan file found. [Clean up]
/Library/Extensions
[loaded] com.logitech.manager.kernel.driver (6.72.1 - SDK 10.12) [Lookup]
/System/Library/Extensions
[not loaded] com.prolific.driver.PL2303 (2.2.0) [Lookup]
[not loaded] 9 Apple tasks
[loaded] 161 Apple tasks
[running] 104 Apple tasks
[killed] 16 Apple tasks
16 processes killed due to insufficient RAM
[not loaded] 36 Apple tasks
[loaded] 177 Apple tasks
[running] 103 Apple tasks
[killed] 15 Apple tasks
15 processes killed due to insufficient RAM
[running] com.logitech.manager.daemon.plist (Logitech Inc. - installed 2018-01-04) [Lookup]
[running] com.oracle.java.Java-Updater.plist (? 415a694f 72ac4dde - installed 2017-09-16) [Lookup]
[loaded] com.adobe.fpsaud.plist (Adobe Systems, Inc. - installed 2018-02-01) [Lookup]
[loaded] com.barebones.authd.plist (? 7d7988a6 a8630d60 - installed 2013-04-01) [Lookup]
[loaded] com.bombich.ccc.plist (? 41245744 d09e361c - installed 2013-12-26) [Lookup]
[running] com.bombich.ccchelper.plist (Bombich Software, Inc. - installed 2018-02-01) [Lookup]
[loaded] com.oracle.java.Helper-Tool.plist (Shell Script e3fefdd2 - installed 2017-07-22) [Lookup]
[not loaded] com.sheepsystems.BookMacster.plist (? 1154bd07 82920043 - installed 2010-11-28) [Lookup]
[loaded] jp.co.canon.MasterInstaller.plist (Canon Inc. - installed 2017-04-30) [Lookup]
[failed] com.adobe.ARM.[...].plist (? c8cc50de 0 - installed 2011-04-12) [Lookup] - /Applications/Adobe Reader.app/Contents/MacOS/Updater/Adobe Reader Updater Helper.app/Contents/MacOS/Adobe Reader Updater Helper: Executable not found!
[running] com.akamai.single-user-client.plist (? 9fa0dc31 f4f704a9 - installed 2017-09-25) [Lookup]
[loaded] com.dropbox.DropboxMacUpdate.agent.plist (Dropbox, Inc. - installed 2017-08-10) [Lookup]
[loaded] com.google.keystone.agent.plist (Google, Inc. - installed 2017-09-27) [Lookup]
[loaded] com.littleknownsoftware.MailPluginTool-Watcher.plist (? 5bd3ffff b2e9cd5d - installed 2017-12-29) [Lookup]
[running] ws.agile.1PasswordAgent.plist (? a7e57752 dbc058f8 - installed 2014-06-01) [Lookup]
Safari Application
(/Applications/Safari.app)
Dropbox Application
(/Applications/Dropbox.app)
Moom Application
(/Applications/Moom.app)
TypeIt4Me Application
(/Applications/TypeIt4Me.app)
SMARTReporter Application
(/Applications/SMARTReporter.app)
iTunesHelper Application (Apple, Inc. - installed 2018-01-04)
(/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Canon IJ Network Scanner Selector EX Application
(/Applications/Canon Utilities/IJ Network Scanner Selector EX/Canon IJ Network Scanner Selector EX.app)
JavaAppletPlugin: Java 8 Update 144 build 01 (installed 2017-09-16) Check version
FlashPlayer-10.6: 28.0.0.161 (installed 2018-02-06) [Lookup]
QuickTime Plugin: 7.7.3 (installed 2018-01-04)
AdobePDFViewerNPAPI: 11.0.14 (installed 2016-01-14) [Lookup]
AdobePDFViewer: 11.0.14 (installed 2016-01-14) [Lookup]
Flash Player: 28.0.0.161 (installed 2018-02-06) [Lookup]
QualysBrowserCheckSafari: 1.0.48.1 (installed 2013-09-11) [Lookup]
Google Earth Web Plug-in: 6.0 (installed 2010-12-11) [Lookup]
Silverlight: 5.1.30317.0 (installed 2014-04-19) [Lookup]
iPhotoPhotocast: 7.0 (installed 2010-04-01)
[enabled] Ghostery - GHOSTERY, Inc. - https://www.ghostery.com/ (installed 2016-03-13)
[enabled] 1Password - AgileBits - https://agilebits.com/onepassword (installed 2017-11-29)
[enabled] Dictionary - slicefactory - http://www.slicefactory.com (installed 2011-09-29)
Akamai NetSession Preferences (installed 2017-09-11) [Lookup]
Flash Player (installed 2018-02-01) [Lookup]
Java (installed 2017-09-16) [Lookup]
Logi Options Launcher (installed 2018-01-04) [Lookup]
Paragon NTFS for Mac ® OS X (installed 2016-09-02) [Lookup]
Skip System Files: NO
Mobile backups: OFF
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 499.25 GB Disk used: 163.35 GB
Destinations:
Data [Network]
Total size: 998.06 GB
Total number of backups: 248
Oldest backup: 9/23/13, 14:30
Last backup: 2/9/18, 15:55
Size of backup disk: Adequate
Backup size 998.06 GB > (Disk used 163.35 GB X 3)
76% backupd
7% quicklookd
5% WindowServer
5% kextd
4% kernel_task
582 MB kernel_task
140 MB firefox
115 MB Numbers
109 MB Dropbox
95 MB WindowServer
Top Processes by Network Use: ⓘ
Input Output Process name
45 MB 343 KB kernel_task
7 MB 1 MB mDNSResponder
371 KB 114 KB netbiosd
99 KB 247 KB Dropbox
45 KB 58 KB apsd
Top Processes by Energy Use: ⓘ
10.70 WindowServer
4.10 Mail
2.48 diskimages-helper
2.20 mds_stores
1.70 Full Deck Solitaire
887 MB Available RAM
16 MB Free RAM
3.13 GB Used RAM
871 MB Cached files
169 MB Swap Used
Software installs (last 30 days): ⓘ
Adobe Flash Player: (installed 2018-01-28)
Adobe Flash Player: (installed 2018-02-06)
Install information may not be complete.
Diagnostics Events (last 3 days for minor events): ⓘ
2018-02-08 15:22:14 com.apple.WebKit.WebContent High CPU use [Open] [Details]
2018-01-28 14:44:36 Last shutdown cause: 0 - Power loss
iMac, macOS High Sierra (10.13.1), iMac late '09