The iMac has 187.91GB of available space. It is 7 years old.
EtreCheck report:
EtreCheck version: 2.9.12 (265)
Report generated 2016-06-03 17:27:11
Download EtreCheck from https://etrecheck.com
Runtime 2:25
Performance: Excellent
Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.
Problem: Computer is too slow
Hardware Information: ⓘ
iMac (20-inch, Early 2009)
[Technical Specifications] - [User Guide] - [Warranty & Service]
iMac - model: iMac9,1
1 2.66 GHz Intel Core 2 Duo CPU: 2-core
4 GB RAM Upgradeable - [Instructions]
BANK 0/DIMM0
2 GB DDR3 1067 MHz ok
BANK 1/DIMM0
2 GB DDR3 1067 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ⓘ
NVIDIA GeForce 9400 - VRAM: 256 MB
iMac 1680 x 1050
System Software: ⓘ
OS X El Capitan 10.11.4 (15E65) - Time since boot: about one day
Disk Information: ⓘ
WDC WD3200AAJS-40H3A0 disk0 : (320.07 GB) (Rotational)
EFI (disk0s1) <not mounted> : 210 MB
Macintosh HD (disk0s2) / : 313.40 GB (187.89 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
HL-DT-ST DVDRW GA11N ()
USB Information: ⓘ
Apple Computer, Inc. IR Receiver
USB USB Keyboard
Apple Inc. BRCM2046 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Inc. Built-in iSight
MediaTek Inc MT1887
Configuration files: ⓘ
/etc/sudoers, File size 1242 but expected 2299
Gatekeeper: ⓘ
Mac App Store and identified developers
Kernel Extensions: ⓘ
/System/Library/Extensions
[not loaded] com.mcafee.kext.Virex (1.0.0d1 - 2016-05-17) [Support]
System Launch Agents: ⓘ
[not loaded] 8 Apple tasks
[loaded] 150 Apple tasks
[running] 80 Apple tasks
System Launch Daemons: ⓘ
[not loaded] 45 Apple tasks
[loaded] 153 Apple tasks
[running] 90 Apple tasks
Launch Agents: ⓘ
[failed] com.adobe.ARMDCHelper.cc24aef4a1b90ed56a...plist (2016-05-17) [Support]
User Launch Agents: ⓘ
[failed] com.adobe.ARM.[...].plist (2016-02-27) [Support]
Other Apps: ⓘ
[running] jp.co.canon.cijscannerregister.65632
[loaded] 378 Apple tasks
[running] 202 Apple tasks
Internet Plug-ins: ⓘ
DirectorShockwave: 12.2.4r194 - SDK 10.6 (2016-02-23) [Support]
o1dbrowserplugin: 5.38.6.0 - SDK 10.8 (2015-11-06) [Support]
Google Earth Web Plug-in: 7.1 (2013-10-07) [Support]
Default Browser: 601 - SDK 10.11 (2016-03-23)
AdobePDFViewerNPAPI: 15.016.20041 - SDK 10.11 (2016-05-21) [Support]
FlashPlayer-10.6: 21.0.0.242 - SDK 10.6 (2016-05-21) [Support]
AmazonMP3DownloaderPlugin101749: Unknown
QuickTime Plugin: 7.7.3 (2016-03-23)
iPhotoPhotocast: 7.0 (2010-04-01)
Flash Player: 21.0.0.242 - SDK 10.6 (2016-05-21) [Support]
googletalkbrowserplugin: 5.38.6.0 - SDK 10.8 (2014-10-29) [Support]
AdobePDFViewer: 15.016.20041 - SDK 10.11 (2016-05-21) [Support]
JavaAppletPlugin: 15.0.1 - SDK 10.11 (2014-10-13) Check version
User internet Plug-ins: ⓘ
fbplugin_1_0_3: Unknown (2010-02-26) [Support]
Safari Extensions: ⓘ
AdBlock - BetaFish, Inc. - https://getadblock.com (2016-02-12)
3rd Party Preference Panes: ⓘ
Flash Player (2016-05-09) [Support]
Time Machine: ⓘ
Skip System Files: NO
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 313.40 GB Disk used: 125.51 GB
Destinations:
Time Machine Backups [Local]
Total size: 999.86 GB
Total number of backups: 16
Oldest backup: 25/10/2015, 17:23
Last backup: 25/05/2016, 17:34
Size of backup disk: Excellent
Backup size 999.86 GB > (Disk size 313.40 GB X 3)
Top Processes by CPU: ⓘ
92% mdworker(15)
4% WindowServer
2% kernel_task
1% fontd
0% SystemUIServer
Top Processes by Memory: ⓘ
534 MB kernel_task
524 MB com.apple.WebKit.WebContent(3)
233 MB mdworker(14)
193 MB iTunes
119 MB Safari
Virtual Memory Information: ⓘ
155 MB Free RAM
4.10 GB Used RAM (1.08 GB Cached)
768 KB Swap Used
Diagnostics Information: ⓘ
Jun 2, 2016, 05:01:19 PM Self test - passed