My Mac Mini is running extremely slow after installing El Capitan

Chances are you have 3rd party additions that do not play nice with El Capitan

Please post the output from EtreCheck

<https://discussions.apple.com/docs/DOC-6174>

Boot into Safe Mode and see if the performance changes (Safe mode does not load 3rd party additions)

<http://support.apple.com/kb/ht1564>

Applications -> Utilities -> Activity Monitor

Applications -> Utilities -> Console and look for frequently repeating entries that may indicate a process that starts, dies, starts, dies, etc... which will not show up in Activity Monitor

You should post the entire EtreCheck output. We want to see all of the 3rd party stuff you have installed, so we can make suggestions about what might be interfering with your performance.

We do not need to see all the com.apple... entries. A lot of that com.apple... stuff is because you most likely just upgraded from previous OS X versions and things get carried over that OS X no longer installs, and EtreCheck is being overly careful.

Launch Daemons: (What does this mean?)

[loaded] com.macpaw.CleanMyMac3.Agent.plist [Click for support]

First and foremost get rid of CleanMyMac3. It's considered malware around here. Uninstall according to the developer's instructions: How to Uninstall CleanMyMac 3. Knowledge Base - MacPaw. These "cleaning" and "optimizing" apps are not needed with Macs. That also goes for antivirus software. Not needed.

You may want to launch Disk Utility and repair the disk. Be sure to make a backup.

Do you have a backup strategy in place? I see you don't have Time Machine enabled. If you don't have a backup strategy you should consider implementing one ASAP. If you don't you're guaranteed to lose data at some time.

As I'm experiencing similar beachballing, I thought I would post my etreCheck output here also, for your sage analysis. Some of the warnings aren't clear to me, so please don't assume I get any of them. Let's start from scratch.

NOTES:

1. I cannot locate the red-lined files (seen here as "Failed"). Same for the "Unknown" files. I can't find either in my directory. I may have deleted them. But etreCheck still reports them as "Failed."

2. I have since enlarged the size of the backup file for Time Machine.

EtreCheck version: 2.9.4 (254)

Report generated 2016-02-17 17:14:00

Download EtreCheck from http://etrecheck.com

Runtime 2:18

Performance: Excellent

Click the [Support] links for help with non-Apple products.

Click the [Details] links for more information about that line.

Click the [Check files] link for help with unknown files.

Problem: Beachballing

Description:

…Especially when switching applications.

Hardware Information:ⓘ

MacBook Pro (13-inch, Mid 2012)

[Technical Specifications] - [User Guide] - [Warranty & Service]

MacBook Pro - model: MacBookPro9,2

1 2.5 GHz Intel Core i5 CPU: 2-core

16 GB RAM Upgradeable - [Instructions]

BANK 0/DIMM0

8 GB DDR3 1600 MHz ok

BANK 1/DIMM0

8 GB DDR3 1600 MHz ok

Bluetooth: Good - Handoff/Airdrop2 supported

Wireless: Unknown Battery: Health = Normal - Cycle count = 818

Video Information:ⓘ

Intel HD Graphics 4000

Color LCD 1920 x 1200

Cinema HD Display 1920 x 1200

System Software:ⓘ

OS X El Capitan 10.11.4 (15E39d) - Time since boot: about 3 days

Disk Information:ⓘ

APPLE HDD HTS547550A9E384 disk0 : (500.11 GB) (Rotational)

EFI (disk0s1) <not mounted> : 210 MB

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

Macintosh HD (disk1) / : 498.88 GB (26.63 GB free)

Core Storage: disk0s2 499.25 GB Online

MATSHITADVD-R UJ-8A8 ()

USB Information:ⓘ

Apple Inc. FaceTime HD Camera (Built-in)

Apple Inc. Apple Internal Keyboard / Trackpad

Apple Computer, Inc. IR Receiver

Apple Inc. BRCM20702 Hub

Apple Inc. Bluetooth USB Host Controller

USB Flash Memory 15.51 GB

Untitled (disk3s1) /Volumes/Untitled : 15.51 GB (5.35 GB free)

Thunderbolt Information:ⓘ

Apple Inc. thunderbolt_bus

Gatekeeper:ⓘ

Anywhere

Unknown Files:ⓘ

~/Library/LaunchAgents/com.bitcasa.BitcasaUI.plist

~/Library/LaunchAgents/com.informer.mac.client.plist

~/Library/LaunchAgents/com.zeobit.MacKeeper.Helper

3 unknown files found. [Check files]

Kernel Extensions:ⓘ

/Applications/TechTool Pro 8 (old version).app

[not loaded] com.micromat.driver.spdKernel (1 - SDK 10.11 - 2016-01-19) [Support]

[not loaded] com.micromat.driver.spdKernel-10-8 (1 - SDK 10.11 - 2016-01-19) [Support]

/Applications/TemperatureMonitor.app

[not loaded] com.bresink.driver.BRESINKx86Monitoring (9.0 - 2013-09-19) [Support]

/Library/Extensions

[not loaded] com.Logitech.Control Center.HID Driver (3.9.1 - SDK 10.8 - 2016-02-10) [Support]

[not loaded] com.Logitech.Unifying.HID Driver (1.3.1 - SDK 10.8 - 2016-02-10) [Support]

[loaded] com.globaldelight.driver.Boom2Device (1.1 - SDK 10.10 - 2016-02-10) [Support]

[loaded] com.squirrels.airparrot.framebuffer (5 - SDK 10.10 - 2016-02-10) [Support]

[loaded] com.squirrels.driver.AirParrotSpeakers (1.8 - SDK 10.8 - 2016-02-10) [Support]

/System/Library/Extensions

[not loaded] au.com.glassechidna.heimdall_usb_shield (6.0 - 2016-02-10) [Support]

[not loaded] com.Huawei.driver.HuaweiDataCardDriver (4.0.6 - 2016-02-10) [Support]

[not loaded] com.InnovationTechnology.driver.ComputerAudio (1.01 - SDK 10.7 - 2016-02-10) [Support]

[not loaded] com.devguru.driver.SamsungComposite (1.4.20 - SDK 10.6 - 2016-02-10) [Support]

[not loaded] com.globaldelight.driver.BoomDevice (1.1 - SDK 10.9 - 2016-02-10) [Support]

[not loaded] com.seagate.driver.PowSecDriverCore (5.1.1 - 2016-02-10) [Support]

/System/Library/Extensions/Seagate Storage Driver.kext/Contents/PlugIns

[not loaded] com.seagate.driver.PowSecLeafDriver_10_4 (5.1.1 - 2013-11-06) [Support]

[not loaded] com.seagate.driver.PowSecLeafDriver_10_5 (5.1.1 - 2013-11-06) [Support]

[not loaded] com.seagate.driver.SeagateDriveIcons (5.1.1 - 2013-11-06) [Support]

/System/Library/Extensions/ssuddrv.kext/Contents/PlugIns

[not loaded] com.devguru.driver.SamsungACMControl (1.4.20 - SDK 10.6 - 2014-03-10) [Support]

[not loaded] com.devguru.driver.SamsungACMData (1.4.20 - SDK 10.6 - 2014-03-10) [Support]

[not loaded] com.devguru.driver.SamsungMTP (1.4.20 - SDK 10.5 - 2014-03-10) [Support]

[not loaded] com.devguru.driver.SamsungSerial (1.4.20 - SDK 10.6 - 2014-03-10) [Support]

System Launch Agents:ⓘ

[loaded] 151 Apple tasks

[running] 86 Apple tasks

System Launch Daemons:ⓘ

[loaded] 190 Apple tasks

[running] 99 Apple tasks

Launch Agents:ⓘ

[running] com.Logitech.Control Center.Daemon.plist (2015-09-18) [Support]

[running] com.ecamm.iglasses3agent.plist (2016-02-14) [Support]

[loaded] com.google.keystone.agent.plist (2015-12-14) [Support]

[loaded] com.oracle.java.Java-Updater.plist (2015-06-16) [Support]

[running] net.decimus.Synk.SynkAgent.plist (2015-02-15) [Support]

Launch Daemons:ⓘ

[loaded] com.adobe.ARMDC.Communicator.plist (2015-10-16) [Support]

[loaded] com.adobe.ARMDC.SMJobBlessHelper.plist (2015-10-16) [Support]

[loaded] com.adobe.fpsaud.plist (2016-01-29) [Support]

[loaded] com.ciscosystems.ciscoconnectupgrade.daemon.plist (2015-02-24) [Support]

[loaded] com.google.keystone.daemon.plist (2015-12-14) [Support]

[loaded] com.oracle.java.Helper-Tool.plist (2015-06-16) [Support]

[loaded] com.rockysandstudio.WUHelper.plist (2013-12-14) [Support]

[loaded] net.decimus.Synk.AuthTool.plist (2015-02-15) [Support]

[loaded] net.decimus.Synk.synksharingd.plist (2015-02-15) [Support]

User Launch Agents:ⓘ

[failed] ca.madefresh.BodegaAgent.plist (2011-09-13) [Support] [Details]

[failed] com.adobe.ARM.[...].plist (2015-12-06) [Support]

[failed] com.bitcasa.BitcasaUI.plist (2011-11-21) [Support]

[running] com.c-command.SpamSieve.LaunchAgent.plist (2016-02-14) [Support]

[loaded] com.facebook.videochat.[redacted].plist (2014-08-13) [Support]

[running] com.google.Chrome.framework.plist (2016-02-14) [Support]

[failed] com.google.GoogleContactSyncAgent.plist (2013-10-25) [Support]

[failed] com.informer.mac.client.plist (2015-08-26) [Support]

[failed] com.littleknownsoftware.MailPluginTool-Startup.plist (2015-08-27) [Support]

[loaded] com.littleknownsoftware.MailPluginTool-Watcher.plist (2015-08-27) [Support]

[loaded] com.macupdate.desktop5.scanner.plist (2016-02-10) [Support]

[loaded] com.propaganda.dejavu.dvmonitor.plist (2014-10-23) [Support]

[failed] com.zeobit.MacKeeper.Helper (2013-02-18) [Support] [Details]

[failed] com.zeobit.MacKeeper.Helper.plist (2011-12-27) [Support] [Details]

[loaded] de.metaquark.appfresh.plist (2012-06-16) [Support]

[loaded] uk.co.canimaansoftware.clamxav.clamscan.plist (2016-02-12) [Support]

[loaded] uk.co.canimaansoftware.clamxav.freshclam.plist (2016-02-12) [Support]

[failed] ws.agile.1PasswordAgent.plist (2013-06-22) [Support]

[loaded] One Apple task

User Login Items:ⓘ

ChronoSync Scheduler Application (/Applications/Chronosync/ChronoSync.app/Contents/Library/LoginItems/ChronoSync Scheduler.app) (2015-12-22)

WindowMizer Application (/Applications/WindowMizer.app) (2015-09-21)

Macs Fan Control Application Hidden (/Applications/Macs Fan Control.app) (2016-01-01)

Mail Call Application Hidden (/Applications/Mail Call.app) (2016-02-14)

fuspredownloader UNKNOWN (missing value)

MacLWSLauncher UNKNOWN (missing value)

MacUpdate Desktop UNKNOWN (missing value)

Android File Transfer Agent Application (~/Library/Application Support/Google/Android File Transfer/Android File Transfer Agent.app)

Google Chrome Application (/Applications/Google Chrome.app) (2016-02-09)

Dropbox UNKNOWN (missing value)

Vitamin-R 2 Application (/Applications/Vitamin-R 2.app) (2016-02-10)

MenuMetersApp Application Hidden (/Library/PreferencePanes/MenuMeters.prefPane/Contents/Resources/MenuMetersApp. app) (2015-10-07)

Other Apps:ⓘ

[running] ch.sudo.cyberduck.34912 (2015-10-27)

[running] com.apple.xpc.launchd.oneshot.0x10000003.SpamSieve (2016-02-12)

[running] com.apple.xpc.launchd.oneshot.0x10000004.SpamSieveHelper (2016-02-12)

[running] com.apple.xpc.launchd.oneshot.0x10000006.Flip Player (2016-02-10)

[running] com.apple.xpc.launchd.oneshot.0x1000000a.soffice (2016-02-15)

[running] com.crystalidea.MacsFanControl.59872 (2016-01-01)

[running] com.daisydiskapp.DaisyDiskStandAlone.39712 (2016-02-17)

[running] com.econtechnologies.backgrounder.chronosync.136352 (2015-12-22)

[running] com.etresoft.EtreCheck.40672 (2016-02-14)

[running] com.google.Chrome.46752 (2016-02-09)

[running] com.google.android.mtpagent.132512 (2012-10-15)

[running] com.pugsleyllc.mailcall.60832 (2016-02-14)

[running] com.rgbworld.windowmizer.93472 (2015-09-21)

[running] com.skype.skype.78112 (2016-01-26)

[running] com.tastyapps.ta.Videobox.91552 (2015-10-06)

[running] com.verizon.vzmessagesmac.64352 (2016-01-14)

[running] com.yujitach.MenuMetersApp.141152 (2015-10-07)

[running] fr.handbrake.HandBrake.47712 (2016-02-11)

[loaded] org.libreoffice.script.56992 (2016-02-15)

Internet Plug-ins:ⓘ

DirectorShockwave: 12.2.3r183 - SDK 10.6 (2015-12-03) [Support]

o1dbrowserplugin: 5.41.3.0 - SDK 10.8 (2015-12-15) [Support]

OVSHelper: 1.1 (2014-02-24) [Support]

Default Browser: 601 - SDK 10.11 (2016-02-10)

Flip4Mac WMV Plugin: 3.3.7.3 - SDK 10.7 (2016-02-10) [Support]

OfficeLiveBrowserPlugin: 12.3.4 (2012-11-05) [Support]

PandoWebInst: 1.0 (2009-12-30) [Support]

AdobeAAMDetect: AdobeAAMDetect 1.0.0.0 - SDK 10.6 (2012-08-08) [Support]

FlashPlayer-10.6: 20.0.0.306 - SDK 10.6 (2016-02-10) [Support]

AdobePDFViewerNPAPI: 15.010.20056 - SDK 10.8 (2015-12-18) [Support]

PDF Browser Plugin: 2.4.4 - SDK 10.6 (2013-08-31) [Support]

QuickTime Plugin: 7.7.3 (2016-02-10)

Flash Player: 20.0.0.306 - SDK 10.6 (2016-02-10) [Support]

googletalkbrowserplugin: 5.41.3.0 - SDK 10.8 (2015-12-11) [Support]

iPhotoPhotocast: 7.0 (2010-04-03)

AdobePDFViewer: 15.010.20056 - SDK 10.8 (2015-12-18) [Support]

PDEPrint: 2.0 (2012-01-02) [Support]

Silverlight: 5.1.41212.0 - SDK 10.6 (2016-01-14) [Support]

JavaAppletPlugin: Java 8 Update 71 build 15 (2016-01-20) Check version

User internet Plug-ins:ⓘ

CitrixOnlineWebDeploymentPlugin: 1.0.94 (2013-02-05) [Support]

Picasa: 1.0 - SDK 10.4 (2013-11-09) [Support]

Google Earth Web Plug-in: 7.1 (2013-10-07) [Support]

Safari Extensions:ⓘ

Translate (2015-06-15)

Facebook Cleaner (2013-12-22)

Turn Off the Lights (2015-06-15)

Facebook Improved (2015-06-15)

FlashToHTML5 (2014-04-03)

ResizeMe (2015-06-15)

MUPromo (2010-08-06)

AdBlock (2015-09-04)

Adblock Plus (2016-01-23)

Audio Plug-ins:ⓘ

EcammAudioLoader: 1.0.4 - SDK 10.11 (2016-02-10) [Support]

CallRecorder: v2.5.21 - SDK 10.11 (2016-02-10) [Support]

3rd Party Preference Panes:ⓘ

Déjà Vu (2015-09-30) [Support]

Flash Player (2016-01-29) [Support]

Flip4Mac WMV (2016-02-10) [Support]

Java (2016-01-20) [Support]

Logitech Control Center (2015-09-24) [Support]

MenuMeters (2015-10-07) [Support]

Perian (2015-06-27) [Support]

Shades Preferences (2014-10-17) [Support]

Time Machine:ⓘ

Skip System Files: NO

Mobile backups: ON

Auto backup: YES

Volumes being backed up:

Macintosh HD: Disk size: 498.88 GB Disk used: 472.25 GB

Destinations:

MACBOOK PRO [Local]

Total size: 500.24 GB

Total number of backups: 33

Oldest backup: 10/17/15, 10:19 PM

Last backup: 1/30/16, 8:21 PM

Size of backup disk: Too small

Backup size 500.24 GB < (Disk used 472.25 GB X 3)

Top Processes by CPU:ⓘ

18% WindowServer

4% kernel_task

2% MenuMetersApp

1% Google Chrome Helper(16)

1% MacsFanControl

Top Processes by Memory:ⓘ

1.54 GB Google Chrome Helper(16)

1.31 GB kernel_task

852 MB Mail

442 MB com.apple.WebKit.WebContent(2)

393 MB iTunes

Virtual Memory Information:ⓘ

189 MB Free RAM

16.00 GB Used RAM (5.39 GB Cached)

58 MB Swap Used

Diagnostics Information:ⓘ

Feb 16, 2016, 05:49:01 PM /Library/Logs/DiagnosticReports/QuickTime Player 7_2016-02-16-174901_[redacted].cpu_resource.diag [Details]

/Applications/Utilities/QuickTime Player 7.app/Contents/MacOS/QuickTime Player 7

Feb 16, 2016, 04:49:28 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-16-164928_[redacted].crash

/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Metadat a.framework/Versions/A/Support/mdworker

Feb 15, 2016, 01:02:57 PM /Library/Logs/DiagnosticReports/Message+_2016-02-15-130257_[redacted].cpu_resou rce.diag [Details]

/Applications/Message+.app/Contents/MacOS/Message+

Feb 15, 2016, 07:35:01 AM ~/Library/Logs/DiagnosticReports/VLC_2016-02-15-073501_[redacted].crash

org.videolan.vlc - /Applications/VLC.app/Contents/MacOS/VLC

Feb 15, 2016, 01:00:33 AM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-15-010033_[redacted].crash

Feb 15, 2016, 01:00:32 AM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-15-010032_[redacted].crash

Feb 14, 2016, 10:41:59 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-224159_[redacted].crash

Feb 14, 2016, 10:41:57 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-224157_[redacted].crash

Feb 14, 2016, 10:37:45 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-223745_[redacted].crash

Feb 14, 2016, 10:37:44 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-223744_[redacted].crash

Feb 14, 2016, 10:37:39 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-223739_[redacted].crash

Feb 14, 2016, 10:37:38 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-223738_[redacted].crash

Feb 14, 2016, 10:37:33 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-223733_[redacted].crash

Feb 14, 2016, 10:37:32 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-223732_[redacted].crash

Feb 14, 2016, 10:25:16 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-222516_[redacted].crash

Feb 14, 2016, 10:25:06 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-222506_[redacted].crash

Feb 14, 2016, 10:24:57 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-222457_[redacted].crash

Feb 14, 2016, 10:24:55 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-222455_[redacted].crash

Feb 14, 2016, 10:22:58 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-222258_[redacted].crash

Feb 14, 2016, 10:22:47 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-222247_[redacted].crash

Feb 14, 2016, 10:22:37 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-222237_[redacted].crash

Feb 14, 2016, 10:22:36 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-222236_[redacted].crash

Feb 14, 2016, 10:22:34 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-222234_[redacted].crash

Feb 14, 2016, 10:22:33 PM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-14-222233_[redacted].crash

Feb 14, 2016, 09:46:54 PM Self test - passed

Kernel Extensions: ⓘ

/Applications/TechTool Pro 8 (old version).app

[not loaded] com.micromat.driver.spdKernel (1 - SDK 10.11 - 2016-01-19) [Support]

[not loaded] com.micromat.driver.spdKernel-10-8 (1 - SDK 10.11 - 2016-01-19) [Support]

/Applications/TemperatureMonitor.app

[not loaded] com.bresink.driver.BRESINKx86Monitoring (9.0 - 2013-09-19) [Support]

/Library/Extensions

[not loaded] com.Logitech.Control Center.HID Driver (3.9.1 - SDK 10.8 - 2016-02-10) [Support]

[not loaded] com.Logitech.Unifying.HID Driver (1.3.1 - SDK 10.8 - 2016-02-10) [Support]

[loaded] com.globaldelight.driver.Boom2Device (1.1 - SDK 10.10 - 2016-02-10) [Support]

[loaded] com.squirrels.airparrot.framebuffer (5 - SDK 10.10 - 2016-02-10) [Support]

[loaded] com.squirrels.driver.AirParrotSpeakers (1.8 - SDK 10.8 - 2016-02-10) [Support]

/System/Library/Extensions

[not loaded] au.com.glassechidna.heimdall_usb_shield (6.0 - 2016-02-10) [Support]

[not loaded] com.Huawei.driver.HuaweiDataCardDriver (4.0.6 - 2016-02-10) [Support]

[not loaded] com.InnovationTechnology.driver.ComputerAudio (1.01 - SDK 10.7 - 2016-02-10) [Support]

[not loaded] com.devguru.driver.SamsungComposite (1.4.20 - SDK 10.6 - 2016-02-10) [Support]

[not loaded] com.globaldelight.driver.BoomDevice (1.1 - SDK 10.9 - 2016-02-10) [Support]

[not loaded] com.seagate.driver.PowSecDriverCore (5.1.1 - 2016-02-10) [Support]

/System/Library/Extensions/Seagate Storage Driver.kext/Contents/PlugIns

[not loaded] com.seagate.driver.PowSecLeafDriver_10_4 (5.1.1 - 2013-11-06) [Support]

[not loaded] com.seagate.driver.PowSecLeafDriver_10_5 (5.1.1 - 2013-11-06) [Support]

[not loaded] com.seagate.driver.SeagateDriveIcons (5.1.1 - 2013-11-06) [Support]

/System/Library/Extensions/ssuddrv.kext/Contents/PlugIns

[not loaded] com.devguru.driver.SamsungACMControl (1.4.20 - SDK 10.6 - 2014-03-10) [Support]

[not loaded] com.devguru.driver.SamsungACMData (1.4.20 - SDK 10.6 - 2014-03-10) [Support]

[not loaded] com.devguru.driver.SamsungMTP (1.4.20 - SDK 10.5 - 2014-03-10) [Support]

[not loaded] com.devguru.driver.SamsungSerial (1.4.20 - SDK 10.6 - 2014-03-10) [Support]

Do you really need all these kernel extensions? The unloaded ones either mean you really are not using them, or they will be dynamically loaded later. If you are really using them, fine. But ones like the Seagate drivers. OS X is perfectly capable of reading an external disk without out additional drivers.

~/Library/LaunchAgents/com.zeobit.MacKeeper.Helper

[failed] com.zeobit.MacKeeper.Helper (2013-02-18) [Support] [Details]

[failed] com.zeobit.MacKeeper.Helper.plist (2011-12-27) [Support][Details]

Suggest making sure you have removed ALL of MacKeeper.

Feb 15, 2016, 01:00:33 AM ~/Library/Logs/DiagnosticReports/mdworker_2016-02-15-010033_[redacted].crash

lots of additional posts...

You seem to be having some issues with Spotlight. You might consider re-indexing your drive.

<Spotlight: How to re-index folders or volumes - Apple Support>

You have 16GB of RAM, and yet you are still using swap. You are either trying to run too many things at the same time (for example all those Launch Agents and Daemons you have going), or you run some really memory intensive applications (video or graphic editing software).

You might want to review all the Launch Agents and Daemons listed to see if there is stuff you really need vs stuff you played with once, but no more.

Hello Bob,

Under normal circumstances, you should start a new question for your problem instead of piggy-backing onto someone else's problem. However, in your case, you will need to contact Apple using whatever methods have been provided in your beta program. No one here will be able to help with a beta version.

Oooh. Missed that 😊

Be that as it may, the etreCheck produced valuable results. A problem: I can't locate the files that you (Bob) indicated should be deleted (e.g., the MacKeeper files and the unnecessary kernel extensions).* They're not visible in my directory as regular or hidden files. How can I locate them?

Thanks for any tips. And etreCheck: in the future, if problems persist, I'll open my own forum topic for their discussion. Thanks to you both.

*The Seagate kernel extensions I installed in order to access my Seagate external HDs, but on your advice, I'll delete them.

These will help:

Do not install MacKeeper

Uninstall MacKeeper

NOTE: IIn Lion, Mountain Lion, Mavericks, Yosemite and El Capitan the Home/Library folder is now invisible. To make it permanently visible enter the following in the Terminal application window: chflags nohidden ~/Library and press the Return key - 10.7: Un-hide the User Library folder.

For Mavericks, Yosemite amd El Capitan go to your Home folder and use the View ➙ Show View Options menu to bring up this window:

Actually as long as your have OS X Beta software installed, you need to the special forums just for Beta testers. OS X Beta software is not allowed to be discussed or diagnosed in the public forums.

The email you got when you signed up for the OS X Beta program would have given you the pointer to the OS X Beta discussion forums.

Thanks a lot, Bob. I forgot about the hidden menu command.

And I will restrain myself in the forums, although this El Capitan version was a public beta, I think now in general release.

YOU MIGHT HAVE A VIRUS!!!!!!! You need to get a mac cleaner