Macbook Pro LAG!!!!!

First, back up all data immediately, as your boot drive might be failing.

Step 1

This diagnostic procedure will query the log for messages that may indicate a system issue. It changes nothing, and therefore will not, in itself, solve your problem.

If you have more than one user account, these instructions must be carried out as an administrator. I've tested them only with the Safari web browser. If you use another browser, they may not work as described.

Triple-click anywhere in the line below on this page to select it:

syslog -k Sender kernel -k Message CReq 'Channel t|GPU D|I/O|find tok|n Cause: -' | tail | open -ef

Copy the selected text to the Clipboard (command-C).

Launch the Terminal application in any of the following ways:

☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.

Paste into the Terminal window (command-V).

The command may take a noticeable amount of time to run. Wait for a new line ending in a dollar sign (“$”) to appear.

A TextEdit window will open with the output of the command. Normally the command will produce no output, and the window will be empty. If the TextEdit window (not the Terminal window) has anything in it, stop here and post it — the text, please, not a screenshot. The title of the TextEdit window doesn't matter, and you don't need to post that.

Step 2

There are a few other possible causes of generalized slow performance that you can rule out easily.

• Reset the System Management Controller.
• If you have a portable computer, check the cycle count of the battery. It may be due for replacement.
• If you have many image or video files on the Desktop with preview icons, move them to another folder.
• If applicable, uncheck all boxes in the iCloud preference pane. See whether there's any change.
• Disconnect all non-essential wired peripherals and remove aftermarket expansion cards, if any.
• Check your keychains in Keychain Access for excessively duplicated items.
• Boot into Recovery mode, launch Disk Utility, and run Repair Disk.
• If you're booting from an aftermarket SSD, see whether there's a firmware update for it.
• If you have a MacBook Pro with dual graphics, disable automatic graphics switching in the Energy Saverpreference pane for better performance at the cost of shorter battery life.

Step 3

When you notice the problem, launch the Activity Monitor application in any of the following ways:

☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

☞ Open LaunchPad. Click Utilities, then Activity Monitor in the icon grid.

Select the CPU tab of the Activity Monitor window.

Select All Processes from the View menu or the menu in the toolbar, if not already selected.

Click the heading of the % CPU column in the process table to sort the entries by CPU usage. You may have to click it twice to get the highest value at the top. What is it, and what is the process? Also post the values for User, System, andIdle at the bottom of the window.

Select the Memory tab. What value is shown in the bottom part of the window for Swap used?

Next, select the Disk tab. Post the approximate values shown for Reads in/sec and Writes out/sec (not Reads in andWrites out.)

Step 4

If you have more than one user account, you must be logged in as an administrator to carry out this step.

Launch the Console application in the same way you launched Activity Monitor. Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select

View ▹ Show Log List

from the menu bar.

Select the 50 or so most recent entries in the log. Copy them to the Clipboard by pressing the key combinationcommand-C. Paste into a reply to this message (command-V). You're looking for entries at the end of the log, not at the beginning.

When posting a log extract, be selective. Don't post more than is requested.

Please do not indiscriminately dump thousands of lines from the log into this discussion.

Important: Some personal information, such as your name, may appear in the log. Anonymize before posting. That should be easy to do if your extract is not too long.

_Nate_ wrote:

updated to mavericks and finally restored the whole Macbook but the problem still persists.

If you restored from TimeMachine with the same user account, that could be to blame.

Read through these two user tips.

Mac is slow after upgrading to Mavericks

Why is my computer slow?

A negative shutdown code may indicate a hardware problem. The exact meaning of the codes is not publicly documented.

Make a "Genius" appointment at an Apple Store, or go to another authorized service provider. You may have to leave the machine there for several days.

Print a copy of the above output and bring it with you. The "Geniuses" probably won't know what to make of it because it's not part of their training, but you might get lucky in that respect.

Back up all data on the internal drive(s) before you hand over your computer to anyone. There are ways to back up a computer that isn't fully functional — ask if you need guidance.

If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.

Keeping your confidential data secure during hardware repair

*An SSD doesn't need to be zeroed.

A temperature sensor could be bad. I've had this problem for a while now, only got a solution today. Try this link http://www.rdoxenham.com/?p=259

You will have to keep an eye on your temperature, but that's it. Till you're ready to go get it fixed at an apple store.