As you might surmise there are a multitude of reasons for slow performance of a MBP. Without some specific information for the reason of a given problem. specific advice is difficult if not impossible to give. A forum such as this with its limitations in communications cannot hope to go through a multitude of possibilities.
I would suggest that you find a tech savvy individual and sit down with him/her and go over your MBP to identify the problem(s). That way you should learn a few things that will clarify some of the items in the link that I refered you to as well as possibly speeding up your MBP.
That read & write speed is about right for the slow 5400RPM drives Apple uses in there default configurations.
But if your drive is near full that will slow it down.
Have you rebooted the system lately? A complete shutdown and restart.
Sopo Sam wrote:
My Mac Pro early 2012 model has lately been very slow and spinning beachball is a common phenomenon now a days. Black Magic speed tester only shows 35 Write and 50 Read speed on my mac. Can anyone help me boost the performance of my machine?
Stop what you're doing and find out what is causing poor performance.
Back up your data. The symptoms you describe may be caused by a failing hard disk but there are many other potential causes, and a backup is essential if the information on your Mac is important to you.
Read: OS X Mountain Lion: If your Mac runs slowly The article is very cursory, but be sure to read through to the end. Unfortunately the link there is broken, so use this one: Disk Utility. You must boot from the Recovery partition to repair a disk.
If Disk Utility finds any errors report what they are.
Reply with your results.
Rather than ask a dozen addtional questions for more details about the problem consider the following:
Apple Support Communities contributor etresoft wrote a very useful app to quickly gather certain system information that may help point to a cause of this problem. Go to his website, download and run EtreCheck:
Etrecheck will be in your Downloads folder. Open it from there. You may see the following dialog box:
Click Open - etresoft contributes to this forum frequently and can be considered a trustworthy developer.
It will take a moment to run as it collects its data.
Copy and paste its output in a reply.
Do not be concerned about anything that says "Problem" or "failed".
EtreCheck was designed to remove any personal information (such as your computer's name and serial numbers) but if you see anything that looks like an email address or any other personal information that should not be divulged to others, please delete or obscure that information when you post the reply.
When you are finished with EtreCheck, quit the program. It occupies very little space, and you can keep it or drag it to the Trash as you wish.
MacBook Pro - model: MacBookPro8,1
1 2.4 GHz Intel Core i5 CPU: 2 cores
4 GB RAM
Intel HD Graphics 3000 - VRAM: 384 MB
HWNetMgr - Path: /Library/StartupItems/HWNetMgr
HWPortDetect - Path: /Library/StartupItems/HWPortDetect
OS X 10.8.3 (12D78) - Uptime: 0 days 3:52
ST9500325ASG disk0 : (500.11 GB)
disk0s1 (disk0s1) <not mounted>: 209.7 MB
JaD3d (disk0s2) /: 499.25 GB (121.01 GB free)
Recovery HD (disk0s3) <not mounted>: 650 MB
Apple Inc. FaceTime HD Camera (Built-in)
Apple Inc. BRCM2070 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Computer, Inc. IR Receiver
Problem System Launch Daemons:
Problem System Launch Agents:
[not loaded] com.adobe.AAM.Updater-1.0.plist
User Launch Agents:
User Login Items:
3rd Party Preference Panes:
User Internet Plug-ins:
Unity Web Player.plugin
Top Processes by CPU:
Top Processes by Memory:
681 MB firefox
168 MB mds
86 MB Finder
74 MB WindowServer
61 MB AdobeReader
53 MB uTorrent
37 MB SystemUIServer
37 MB Dock
37 MB coreservicesd
25 MB loginwindow
All bets are off if you download torrents, so it will be difficult to find what system corruption or data theft may have resulted from doing so.
It may be possible to eradicate whatever system modifications may be present or what required components may be missing or corrupt, but the safest course of action in your case would be to erase your system, reinstall OS X, change your passwords, and don't download torrents.