I ran EtreCheck since MAc Mail was acting oddly -- not displaying correctly, "forward" "reply" buttons are inoperable half the time,etc. and something is eating up all my ram:
EtreCheck version: 2.6.6 (226)
Report generated 12/2/15, 9:28 AM
Runtime 2:01
Download EtreCheck from http://etrecheck.com
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Click the [Click for details] links for more information about that line.
Hardware Information: (What does this mean?)
MacBook Air (13-inch, Mid 2013)
[Click for Technical Specifications]
[Click for User Guide]
MacBook Air - model: MacBookAir6,2
1 1.3 GHz Intel Core i5 CPU: 2-core
4 GB RAM Not upgradeable
BANK 0/DIMM0
2 GB DDR3 1600 MHz ok
BANK 1/DIMM0
2 GB DDR3 1600 MHz ok
Bluetooth: Good - Handoff/Airdrop2 supported
Wireless: en0: 802.11 a/b/g/n/ac
Battery: Health = Normal - Cycle count = 223 - SN = D863414128CF90JAY
Video Information: (What does this mean?)
Intel HD Graphics 5000
Color LCD 1440 x 900
System Software: (What does this mean?)
OS X El Capitan 10.11.1 (15B42) - Time since boot: about 2 days
Disk Information: (What does this mean?)
APPLE SSD SD0256F disk0 : (251 GB) (Solid State - TRIM: Yes)
EFI (disk0s1) <not mounted> : 210 MB
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
Audio (disk0s4) /Volumes/Audio : 100.11 GB (99.89 GB free)
MacBook Air (disk1) / : 149.53 GB (41.78 GB free)
Core Storage: disk0s2 149.90 GB Online
USB Information: (What does this mean?)
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Thunderbolt Information: (What does this mean?)
Apple Inc. thunderbolt_bus
Gatekeeper: (What does this mean?)
Mac App Store and identified developers
Kernel Extensions: (What does this mean?)
/Applications/Boom 2.app
[not loaded] com.globaldelight.driver.Boom2Device (1.1 - SDK 10.10) [Click for support]
/Applications/Rowmote Helper.app
[not loaded] com.regularrateandrhythm.driver.RowmoteIREmu (1.0 - SDK 10.8) [Click for support]
/System/Library/Extensions
[not loaded] com.FTDI.driver.FTDIUSBSerialDriver (2.2.18 - SDK 10.6) [Click for support]
[not loaded] com.m-audio.usb.midisupport.driver (1.1) [Click for support]
System Launch Agents: (What does this mean?)
[killed] com.apple.AssetCacheLocatorService.plist
[killed] com.apple.CallHistoryPluginHelper.plist
[killed] com.apple.CallHistorySyncHelper.plist
[killed] com.apple.EscrowSecurityAlert.plist
[killed] com.apple.FolderActionsDispatcher.plist
[killed] com.apple.SafariCloudHistoryPushAgent.plist
[killed] com.apple.SafariNotificationAgent.plist
[killed] com.apple.cdpd.plist
[killed] com.apple.cloudphotosd.plist
[killed] com.apple.cmfsyncagent.plist
[killed] com.apple.followupd.plist
[killed] com.apple.gamed.plist
[killed] com.apple.icloud.fmfd.plist
[killed] com.apple.photolibraryd.plist
[killed] com.apple.printtool.agent.plist
[killed] com.apple.scopedbookmarkagent.xpc.plist
[killed] com.apple.spindump_agent.plist
[killed] com.apple.telephonyutilities.callservicesd.plist
18 processes killed due to insufficient RAM
System Launch Daemons: (What does this mean?)
[killed] com.apple.AssetCacheLocatorService.plist
[killed] com.apple.GSSCred.plist
[killed] com.apple.awdd.plist
[killed] com.apple.icloud.findmydeviced.plist
[killed] com.apple.ifdreader.plist
[killed] com.apple.periodic-daily.plist
[killed] com.apple.periodic-weekly.plist
[killed] com.apple.tccd.system.plist
[killed] com.apple.wdhelper.plist
[killed] com.apple.xpc.smd.plist
10 processes killed due to insufficient RAM
Launch Agents: (What does this mean?)
[loaded] com.adobe.AAM.Updater-1.0.plist [Click for support]
[failed] com.adobe.ARMDCHelper.cc24aef4a1b90ed56a...plist [Click for support]
[loaded] com.oracle.java.Java-Updater.plist [Click for support]
Launch Daemons: (What does this mean?)
[loaded] com.adobe.fpsaud.plist [Click for support]
[loaded] com.malwarebytes.MBAMHelperTool.plist [Click for support]
[loaded] com.oracle.java.Helper-Tool.plist [Click for support]
User Launch Agents: (What does this mean?)
[loaded] com.adobe.ARM.[...].plist [Click for support]
[failed] com.google.keystone.agent.plist [Click for support]
[failed] com.spotify.webhelper.plist [Click for support]
User Login Items: (What does this mean?)
iTunesHelper Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
iTunesHelper UNKNOWN Hidden (missing value)
Mail Application (/Applications/Mail.app)
Safari Application (/Applications/Safari.app)
AdobeResourceSynchronizer Application Hidden (/Applications/Adobe Acrobat Reader DC.app/Contents/Helpers/AdobeResourceSynchronizer.app)
Other Apps: (What does this mean?)
[running] com.SolidWorks.EDrawings.60832
[running] com.apple.xpc.launchd.oneshot.0x10000011.EtreCheck
Internet Plug-ins: (What does this mean?)
AdobeAAMDetect: Version: AdobeAAMDetect 1.0.0.0 - SDK 10.6 [Click for support]
FlashPlayer-10.6: Version: 19.0.0.245 - SDK 10.6 [Click for support]
QuickTime Plugin: Version: 7.7.3
AdobePDFViewerNPAPI: Version: 15.009.20069 - SDK 10.8 [Click for support]
AdobePDFViewer: Version: 15.009.20069 - SDK 10.8 [Click for support]
Flash Player: Version: 19.0.0.245 - SDK 10.6 [Click for support]
Default Browser: Version: 601 - SDK 10.11
Flip4Mac WMV Plugin: Version: 3.2.0.16 - SDK 10.8 [Click for support]
Silverlight: Version: 5.1.40728.0 - SDK 10.6 [Click for support]
JavaAppletPlugin: Version: Java 8 Update 66 build 17 Check version
User internet Plug-ins: (What does this mean?)
CitrixOnlineWebDeploymentPlugin: Version: 1.0.105 [Click for support]
Move_Media_Player: Version: npmnqmp 071505000006 [Click for support]
Google Earth Web Plug-in: Version: 7.1 [Click for support]
Safari Extensions: (What does this mean?)
AdBlock
Ghostery
3rd Party Preference Panes: (What does this mean?)
Flash Player [Click for support]
Flip4Mac WMV [Click for support]
Java [Click for support]
Perian [Click for support]
Time Machine: (What does this mean?)
Skip System Files: NO
Mobile backups: ON
Auto backup: YES
Volumes being backed up:
MacBook Air: Disk size: 149.53 GB Disk used: 107.75 GB
Destinations:
Studio 500 [Local]
Total size: 500.10 GB
Total number of backups: 45
Oldest backup: 2/14/14, 2:24 PM
Last backup: 11/21/15, 12:16 PM
Size of backup disk: Excellent
Backup size 500.10 GB > (Disk size 149.53 GB X 3)
MPB 500 [Local]
Total size: 499.62 GB
Total number of backups: 13
Oldest backup: 11/8/15, 2:51 PM
Last backup: 11/29/15, 1:26 PM
Size of backup disk: Excellent
Backup size 499.62 GB > (Disk size 149.53 GB X 3)
Top Processes by CPU: (What does this mean?)
37% com.apple.WebKit.WebContent(11)
19% Safari
18% WindowServer
6% kernel_task
4% hidd
Top Processes by Memory: (What does this mean?)
672 MB com.apple.WebKit.WebContent(11)
594 MB kernel_task
225 MB Safari
61 MB Mail
49 MB mdworker(4)
Virtual Memory Information: (What does this mean?)
20 MB Free RAM
3.98 GB Used RAM (332 MB Cached)
1.20 GB Swap Used
Diagnostics Information: (What does this mean?)
Dec 2, 2015, 03:20:56 AM ~/Library/Logs/DiagnosticReports/mapspushd_2015-12-02-032056_[redacted].crash
Nov 29, 2015, 07:55:01 PM Self test - passed
Nov 29, 2015, 03:23:50 PM /Library/Logs/DiagnosticReports/com.apple.WebKit.Networking_2015-11-29-152350_[ redacted].cpu_resource.diag [Click for details]
Nov 29, 2015, 12:19:15 PM /Library/Logs/DiagnosticReports/backupd_2015-11-29-121915_[redacted].cpu_resour ce.diag [Click for details]