Mid-2011 iMac slow after restore

Hello all, thanks for stopping by.
I have a Mid-2011 12,2 iMac that has been a powerhouse throughout its career. After several large edit projects, no less than 30 full-run shows for national and international broadcast, plus a myriad of other large editorial/graphial projects, I decided it was time to do a complete rebuild and bood to factory settings, seems like a nice way to optimize a system, no? After cleaning my system drive, erasing it, re-installing Mavericks, and re-installing all NLE software (FCS3 and CC) this machine has gone from hero to zero overnight. I have never since day one experienced the type of slowdowns that I am now experiencing. For instance, a 45-minute-source encoding into 1080p, 20mbs h.264 through AME would generally take 1.5 hrs. Now, the same export is reporting an 18-hour run time. Similar times with FCP7 and Compressor. There is an exact mirror of this machine running all of the same software and using Mavericks that has not been restored, and it continues to operate at the speeds that I am used to.
If anyone has experienced similar issues, or has any advise, I would be happy to have you join this discussion. And yes, I have turned my machine off and on again, so we are way past anything elementary at this point.
Many Thanks,
Dave O'Connor
Model Name:          iMac
Model Identifier:          iMac12,2
Processor Name:          Intel Core i7
Processor Speed:          3.4 GHz
Number of Processors:          1
Total Number of Cores:          4
L2 Cache (per Core):          256 KB
L3 Cache:          8 MB
Memory:          16 GB
Boot ROM Version:          IM121.0047.B1F
SMC Version (system):          1.72f2
Serial Number (system):          D2*******HJW
Hardware UUID:          ****
AMD Radeon HD 6970M:
Chipset Model:          AMD Radeon HD 6970M
Type:          GPU
Bus:          PCIe
PCIe Lane Width:          x16
VRAM (Total):          2048 MB
Vendor:          ATI (0x1002)
Device ID:          0x6720
Revision ID:          0x0000
ROM Revision:          113-C2960K-152
EFI Driver Version:          01.00.507
Displays:
iMac:
Display Type:          LCD
Resolution:          2560 x 1440
Pixel Depth:          32-Bit Color (ARGB8888)
Main Display:          Yes
Mirror:          Off
Online:          Yes
Built-In:          Yes
Connection Type:          DisplayPort
HP 27xi:
Resolution:          1920 x 1080 @ 60Hz (1080p)
Pixel Depth:          32-Bit Color (ARGB8888)
Display Serial Number:          3CM3390RTX
Mirror:          Off
Online:          Yes
Rotation:          Supported
Television:          Yes
DELL 2007WFP:
Resolution:          1050 x 1680 @ 60 Hz
Pixel Depth:          32-Bit Color (ARGB8888)
Display Serial Number:          HF7306BN2C2L
Mirror:          Off
Online:          Yes
Rotation:          90
<Edited By Host>

More info...
Sample of current export. These exports are for client review via Vimeo at an increased bitrate of 10 to 20Mbps
17 hours for these settings is not a normal time assessment(taken full course, this media took just over 11 hours to complete). To rule out Adobe issues, I opened a similar project via FCP with similar settings.
Given the time this ran through FCP when the screenshot was taken, I can see that this would be about an 11 hour process as well.
So I decided to dumb it down some, and tried a 1280 export in AME. Similar slowdown. Here's where the kicker comes in, on one of our other machines, an exact mirror of this machine, running on the same server makes this 1280 pass in less than one hour. The exact same machine.
My colleague suggested a ProRes export, even though those are much larger than necessary for this step.
5 hours is a very long time for such a low compression export.
So I decided to try directly through QuickTime Pro. (v7.6.6). I took a ProRes 422 source file into QT and set to convert to ProRes 422(LT).
Again, given the time of progress, this looks to be about 5 hours to finish.
In Activity Monitor, I have noticed lately, and even before the system restore, that some QT processes were not responding. So I checked on those processes.
These activities shut down during all encoding processes, Final Cut Pro 7, QuickTime 7, and Adobe Media Encoder. The mirror machine, during all similar processes does not report back on any of these QT issues.
I need big help on this one, and may have to move this issue to another area in discussions.
I know 100% that there are no issues with any peripherals on this machine. The ONLY thing that has changed since I was experiencing smooth working files, is that I restored the machine to factory settings.
Thanks to anyone who can help point me in the right direction.
Cheers,
-Dave O'

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How do I restore my 27" mid-2011 iMac EXACTLY the way it was after hard disk replacement?

Hi all.
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daniirwan wrote:
baltwo: Thanks for your input! I didn't think of wiping the old HDD before sending it in for the replacement..all those sensitive user data! One question: What's a FWHD?
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Greetings:
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These instructions must be carried out as an administrator. If you have only one user account, you are the administrator.
This procedure is a diagnostic test. It makes no changes to your data.
Please triple-click anywhere in the line below on this page to select it:
syslog -k Sender kernel -k Message CSeq 'n Cause: -' | tail | awk '/:/{$4=""; print}' | pbcopy
Copy the selected text to the Clipboard by pressing the key combination command-C.
Launch the built-in 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.
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Paste into the Terminal window by pressing the key combination command-V. I've tested these instructions only with the Safari web browser. If you use another browser, you may have to press the return key after pasting.
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Can you provide details on how each these displays are connected?
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Please read this whole message before doing anything.
This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of this exercise is to determine whether the problem is localized to your user account, or is system-wide. Enable guest logins and log in as Guest. For instructions, launch the System Preferences application, select “Help” from the menu bar, and enter “Set up a guest account” (without the quotes) in the search box.
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Please read this whole message before doing anything.
This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of this test is to determine whether the problem is localized to your user account. Enable guest logins* and log in as Guest. Don't use the Safari-only “Guest User” login created by “Find My Mac.”
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I have a Mid-2011 iMac (3.4GHz) of which Apple's Support document for the Apple Hardware Test (http://support.apple.com/kb/ht1509) says:
Some Macintosh computers that shipped with OS X Lion support the use of Apple Hardware Test over the Internet. These computers will start up to an Internet-based version of AHT if the hard drive does not contain AHT.
Well, this doesn't work for me. My Mac is on a DHCP-supporting router which has constant internet connection. Yet, when I turn off the Mac and then on again, holding the D key down even before the screen turns on, the Mac does indeed react to this key as it's then turning the screen on and taking another about half minute before it continues with the boot process along with showing the Mac symbol. Without the D, the Mac symbol comes up quickly.
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Any suggestions how to fix this?

Re
extract from kb article
PPPoE (where there is no router handling the PPPoE connection)
No
No
Captive-Networks (where you click an "Agree" button to access the Internet)
Yes
No
Proxies (where specific proxy servers must be configured in network preferences)
No
No
Certificate-based authentication / 802.1x
No
No
try check if you are in that case for your internet acces ?
could be a firewall problem too , if is possible try desable firewall ( or any internet filter )
no you can not see a wifi selection if you are wired ( using cable )
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HTH
Pierre

Airport network worked fine until I added a mid 2011 iMac

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Make a New Location, Using network locations in Mac OS X ...
http://support.apple.com/kb/HT2712
10.7 & 10.8…
System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.
10.5.x/10.6.x/10.7.x instructions...
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10.4 instructions...
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There is no update for the mid-2011 iMac firmware that will fix the fans running at high speed.
Only the OEM (original equipment manufacturer) Apple hard drives had the proprietary firmware designed to properly monitor the hard drive temperature.
So you have several possible solutions:
1. If the computer was sold to you with a warranty, rather than "AS IS", my first choice would be to force the seller to restore the computer to the condition it was represented to be in when you purchased it, with an OEM Apple 500GB drive that does not cause the fan problem. If they cannot or will not correct the problem, make them take it back and refund your money. Consumer advocates such as the Better Business Bureau can help you prepare a formal complaint against the seller, and perhaps lead to a successful resolution through arbitration, without hiring an attorney and filing a lawsuit.
2. If you bought the computer "AS IS", you'll have to attempt to repair the problem yourself:
A) Locate an exact replacement for the original OEM Apple hard drive with the proper firmware and install it on your own;
B) Purchase a 'compatibility kit'. OtherWorldComputing www.macsales.com reverse-engineered a solution to the problem and sells a short cable with an external temperature sensor for the hard drive that can be used successfully with non-OEM drives. http://eshop.macsales.com/item/OWC/DIDIMACHDD11/
They also sell the sensor cable with a toolkit that can be used to disassemble and install the cable. http://eshop.macsales.com/item/OWC/DIYIMACHDD11/
C) Try the fan control program mentioned in earlier replies.

Mid-2011 iMac slow after restore

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