Slow response for 15 month old Macbook air, with kernel_task (0) hogging up 300% of the CPU and fan moving at a very high speed.
I have looked through some similar problems that other users faced, and I uninstalled the Java Applet by deleting it, and I also restarted the computer multiple times, but the problem persists. I observed that many queries asked for an EtreCheck report, and this one here is mine. Please help:
Hardware Information: (What does this mean?)
MacBook Air (13-inch, Early 2014)
[Click for Technical Specifications]
MacBook Air - model: MacBookAir6,2
1 1.4 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 = 601 - SN = D8641970UU4F90JAY
Video Information: (What does this mean?)
Intel HD Graphics 5000
Color LCD 1440 x 900
System Software: (What does this mean?)
OS X Mavericks 10.9.5 (13F1112) - Time since boot: less than an hour
Disk Information: (What does this mean?)
APPLE SSD SD0128F disk0 : (121.33 GB) (Solid State - TRIM: Yes)
EFI (disk0s1) <not mounted> : 210 MB
Macintosh HD (disk0s2) / : 120.47 GB (16.80 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
USB Information: (What does this mean?)
Apple Internal Memory Card Reader
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?)
/System/Library/Extensions
[not loaded] com.ZTE.driver.ModemDriverMac (1.0.2d1) [Click for support]
[not loaded] com.mice.driver.Xbox360Controller (1.0.0d13 - SDK 10.8) [Click for support]
/System/Library/Extensions/360Controller.kext/Contents/PlugIns
[not loaded] com.mice.driver.Wireless360Controller (1.0.0d13 - SDK 10.8) [Click for support]
[not loaded] com.mice.driver.WirelessGamingReceiver (1.0.0d13 - SDK 10.8) [Click for support]
Startup Items: (What does this mean?)
MobileBrServ: Path: /Library/StartupItems/MobileBrServ
Startup items are obsolete in OS X Yosemite
System Launch Agents: (What does this mean?)
[running] com.apple.Dock.plist - Invalid signature!
[loaded] com.apple.RemoteDesktop.plist - Invalid signature!
[loaded] com.apple.screensharing.MessagesAgent.plist - Invalid signature!
Launch Agents: (What does this mean?)
[running] com.zteevdo.UDiskService.plist [Click for support]
Launch Daemons: (What does this mean?)
[running] com.mice.360Daemon.plist [Click for support]
[loaded] com.microsoft.office.licensing.helper.plist [Click for support]
User Launch Agents: (What does this mean?)
[loaded] com.google.keystone.agent.plist [Click for support]
User Login Items: (What does this mean?)
iTunesHelper Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Android File Transfer Agent Application (~/Library/Application Support/Google/Android File Transfer/Android File Transfer Agent.app)
Other Apps: (What does this mean?)
[loaded] 0x7ff518504e00.mach_init.Inspector
[running] [0x0-0x1d01d].com.etresoft.EtreCheck
[running] com.google.Chrome.38400
[running] com.google.android.mtpagent.37344
[running] com.pushbullet.macapp-notifications
Internet Plug-ins: (What does this mean?)
Default Browser: Version: 537 - SDK 10.9
QuickTime Plugin: Version: 7.7.3
SharePointBrowserPlugin: Version: 14.0.0 [Click for support]
User internet Plug-ins: (What does this mean?)
Folx3Plugin: Version: 3.0.1 - SDK 10.6 [Click for support]
Safari Extensions: (What does this mean?)
Adblock Plus
DuckDuckGo
Save to Pocket
3rd Party Preference Panes: (What does this mean?)
XBox 360 Controllers [Click for support]
Time Machine: (What does this mean?)
Time Machine not configured!
Top Processes by CPU: (What does this mean?)
294% kernel_task
38% mdworker(5)
19% kextcache
6% ocspd
1% WindowServer
Top Processes by Memory: (What does this mean?)
1.44 GB Google Chrome Helper(13)
308 MB kernel_task
217 MB Google Chrome
139 MB com.apple.IconServicesAgent
127 MB Finder
Virtual Memory Information: (What does this mean?)
227 MB Free RAM
3.77 GB Used RAM (619 MB Cached)
0 B Swap Used
Diagnostics Information: (What does this mean?)
Nov 22, 2015, 06:01:18 PM Self test - passed
Nov 22, 2015, 05:40:39 PM ~/Library/Logs/DiagnosticReports/Captive Network Assistant_2015-11-22-174039_[redacted].crash
Nov 22, 2015, 01:47:32 PM ~/Library/Logs/DiagnosticReports/Captive Network Assistant_2015-11-22-134732_[redacted].crash
Nov 21, 2015, 05:22:10 PM /Library/Logs/DiagnosticReports/Finder_2015-11-21-172210_[redacted].crash
Nov 21, 2015, 05:08:35 PM /Library/Logs/DiagnosticReports/ClamXav_2015-11-21-170835_[redacted].hang
Nov 21, 2015, 12:55:28 AM ~/Library/Logs/DiagnosticReports/Elmedia Player_2015-11-21-005528_[redacted].crash
Nov 20, 2015, 01:43:35 PM /Library/Logs/DiagnosticReports/mds_stores_2015-11-20-134335_[redacted].crash
Nov 20, 2015, 02:06:40 AM /Library/Logs/DiagnosticReports/mds_stores_2015-11-20-020640_[redacted].crash
MacBook Air, OS X Mavericks (10.9.5), null