Applescript applications much slower than scripts?
I can't really find a better place to post this. I have been working on some applescripts and I notice if I save a script as an app it is way slower than running the script without compiling to an app. Any thoughts?
Something is seriously wrong with your installation or you are critically low on RAM, like below 2 GB.
How much RAM is in your machine?
Have you tried a Recovery?
Similar Messages
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Why is Mac OS X 10.7 so much slower than Snow Leopard? It isnt smooth, applications are slow and most dont respond, and dowloads take hours, not minutes.
Something is seriously wrong with your installation or you are critically low on RAM, like below 2 GB.
How much RAM is in your machine?
Have you tried a Recovery? -
In CS6, JavaScript Running MUCH Slower than ActionScript
Hi All,
I am finding that in CS6, JS code runs MUCH slower than ActionScript code. I don't want to double-post here - Full details may be found where I posted them in the InDesign Scripting forum at - CS6 JavaScript Running Much Slower than ActionScript, before I realized that this forum might be more appropriate.
The basic gist of it is that I had a Flex/ActionScript Extension, which I obviously needed to start converting to JavaScript in advance of the next version not supporting ActionScript. I converted 20,000 lines of my business logic code from ActionScript to JavaScript (grrr...) - only to find that it now runs 5 times slower than it did in ActionScript.
What has been the experience of others who have converted large Extensions from ActionScript to JavaScript?
I would greatly appreciate any and all suggestions.
TIA,
mlavieHi All,
I am finding that in CS6, JS code runs MUCH slower than ActionScript code. I don't want to double-post here - Full details may be found where I posted them in the InDesign Scripting forum at - CS6 JavaScript Running Much Slower than ActionScript, before I realized that this forum might be more appropriate.
The basic gist of it is that I had a Flex/ActionScript Extension, which I obviously needed to start converting to JavaScript in advance of the next version not supporting ActionScript. I converted 20,000 lines of my business logic code from ActionScript to JavaScript (grrr...) - only to find that it now runs 5 times slower than it did in ActionScript.
What has been the experience of others who have converted large Extensions from ActionScript to JavaScript?
I would greatly appreciate any and all suggestions.
TIA,
mlavie -
Anyone else? CS4 running much slower than CS3?
I just upgraded to CS4 from CS3. All of the applications are running much, much slower than CS3, particularly InDesign. My computer is literally fresh out of the box; specs below. Software and patches up to date. Thinking of uninstalling CS4 and reverting back to CS3. Any suggestions/feedback?
MacBook Pro 15"
2.66GHz Intel Core 2 Duo processor
4GB memory
320GB 5400-rpm hard drive
NVIDIA GeForce 9600M GT graphics processor with 256MB
1440 by 900 pixels
Snow Leopard OX
Purchased CS4 Master Collection. Other software installed includes iLife, iWork, Office for Mac.I'm not using In Design yet, but for Photoshop and Acrobat my sense is that they are fast or faster than CS3, and Snow Leopard has reduced the launch time for all my apps compared with Leopard.
Yes there are issues with running Adobe apps with Snow Leopard, but some of them are the same issues when running CS3 apps with Leopard--and in any event, these are, I believe, all crashing bugs, not things that slow down responsiveness. I personally have had only a few problems with Design Std CS4 apps + Snow Leopard. -
Can iMac be updated or just get new one? On iMac with OSX10.5.8, 2Ghz Intel Core 2 Duo--it's so much slower than iPad. It hasn't had cache cleaned or "First aid". I'm wondering if a computer store/techie can clean/update it or better to put $$ towards new?
If you want to clean up your hard drive some, here are some of my tips, also.
Hard drive getting full or near full?
Do a search for and downlaod and install OmniDisk Sweeper and OnyX.
Here are some of my tips for deleting or archiving data off of your internal hard
Have you emptied your iMac's Trash icon in the Dock?
If you use iPhoto, iPhoto has its own trash that needs to be emptied, also.
If you use Apple Mail app, Apple Mail also has its own trash area that needs to be emptied, too!
Other things you can do to gain space.
Delete any old or no longer needed emails and/or archive older emails you want to save to disc, Flash drive/s or to ext. hard drive.
Look through your Documents folder and delete any type of old useless type files like "Read Me" type files.
Again, archive to disc, Flash drive or ext. hard drive and/or delete any old documents you no longer use or immediately need.
Uninstall apps that you no longer use. If the app has a dedicated uninstaller, use it to completely uninstall the app. If the app has no uninstaller, then just drag it to the OS X Trash icon and empty the Trash.
Also, if you save old downloaded .dmg application installer files, you can either archive and delete these or just delete the ones you think you'll never install, again.
Download an app called OnyX for your version of OS X.
When you install and launch it, let it do its thing initially, then go to the cleaning and maintenance tabs and run all of the processes in the tabs. Let OnyX clean out all web browser cache files, web browser histories, system cache files, delete old error log files.
Typically, iTunes and iPhoto libraries are the biggest users of HD space.
If you have any other large folders of personal data or projects, these should be thinned out, moved, also, to the external hard drive and then either archived to disc, Flash drive or ext. hard drive and/or deleted off your internal hard drive.
Good Luck! -
My four year old iMac is running much slower than when it was new. Does anyone have any suggestions on what I can do to "clean it up" and get it running like it used to?
What year, screen size, CPU speed and amount of RAM installed?
To find out info about your system,
Click on the Apple symbol in the upper left of the OS X main menu bar. A drop down menu appears.
Click About this Mac. A smaller popup window appears. This gives you basic info like what version of OS X your iMac is running, the speed of your iMac's CPU and how much RAM is installed.
Click on the button that says More Info. A larger window appears giving you a complete overview of your iMac's hardware specs.
Highlight all of this info and copy/paste all of this into another reply to this post, editing out your iMac's serial number before actually posting the reply.
This will tell us everything about your iMac so we may begin to help with your iMac issues.
How full is your Mac's hard drive?
Locate your iMac's hard drive icon on the OS X desktop. Click the icon once, then use the keyboard key combination Command-I. This will give you additonal info about your iMac's internal hard drive.
Post this info in your reply here, also.
Here are some general tips to keep your Mac's hard drive trim and slim as possible
You should never, EVER let a conputer hard drive get completely full, EVER!
With Macs and OS X, you shouldn't let the hard drive get below 15 GBs or less of free data space.
If it does, it's time for some hard drive housecleaning.
Follow some of my tips for cleaning out, deleting and archiving data from your Mac's internal hard drive.
Have you emptied your Mac's Trash icon in the Dock?
If you use iPhoto, iPhoto has its own trash that needs to be emptied, also.
If you store images in other locations other than iPhoto, then you will have to weed through these to determine what to archive and what to delete.
If you use Apple Mail app, Apple Mail also has its own trash area that needs to be emptied, too!
Delete any old or no longer needed emails and/or archive to disc, flash drives or external hard drive, older emails you want to save.
Look through your other Mailboxes and other Mail categories to see If there is other mail you can archive and/or delete.
STAY AWAY FROM DELETING ANY FILES FROM OS X SYSTEM FOLDER!
Look through your Documents folder and delete any type of old useless type files like "Read Me" type files.
Again, archive to disc, flash drives, ext. hard drives or delete any old documents you no longer use or immediately need.
Look in your Applications folder, if you have applications you haven't used in a long time, if the app doesn't have a dedicated uninstaller, then you can simply drag it into the OS X Trash icon. IF the application has an uninstaller app, then use it to completely delete the app from your Mac.
To find other large files, download an app called Omni Disk Sweeper.
Download an app called OnyX for your version of OS X.
When you install and launch it, let it do its initial automatic tests, then go to the cleaning and maintenance tabs and run the maintenance tabs that let OnyX clean out all web browser cache files, web browser histories, system cache files, delete old error log files.
Typically, iTunes and iPhoto libraries are the biggest users of HD space.
move these files/data off of your internal drive to the external hard drive and deleted off of the internal hard drive.
If you have any other large folders of personal data or projects, these should be archived or moved, also, to the optical discs, flash drives or external hard drive and then either archived to disc and/or deleted off your internal hard drive.
Good Luck! -
Preview takes forever to open, much slower than on my old MacBook running Snow Leopard. It has been like this since I bought the computer last January. Any ideas?
Take it to an Apple Store for testing. If you don't get immediate satisfaction, exchange it for another one, which you can do at no cost, no questions asked, within 14 days of delivery.
-
PS CS3 much slower than CS2 on Intel Mac. I don't get it.
Yes, very very strange.
I work with very large files, so I just got a spiffy new Mac Pro. It's my first Intel machine, so I expected that CS2 would drag a little bit, due to Rosetta. In fact, moving from one processor to eight of them seems to have much more than compensated. Nevertheless, I ordered CS4 and while I wait I downloaded the demo of CS3.
I expected that CS3 would fly (no Rosetta) but have found my test tasks taking an inordinate amount of time... much slower than CS2 on the same Xeon workstation, and slower than CS2 on my old iMac (single 2.1GHz G5)
Since I work with extremely large files, I got a hardware RAID5 made up of four 15,000RPM SAS drives. I can't get enough RAM to avoid using scratch disk, so I attacked the biggest performance bottleneck. I did get 8GB of RAM; would have gotten more, but I read that it won't matter until CS goes 64-bit in CS5 at the earliest.
The rest of it: dual quad-core 2.8GHz "Woodcrest" Xeon processors, NVIDIA GeForce 8800GT graphics card, OS X 10.5.5, all updates (Apple and Adobe) applied as of 6pm Wednesday October 8th.
I'm running two tests as my benchmark: open a file (PSD created with CS2, 75" x 75" at 400ppi, two layers, RGB with one additional channel) and resize to 75" x 75" at 800ppi. Once that is done, I rotate the new, massive file counterclockwise 18.5 degrees.
On my old setup, 2.1GHz SP G5 iMac with CS2, these tasks took 38m 30s and 1h 33m 22s respectively.
New machine with CS2: 10m 09s and 29m 14s respectively
New machine with CS3: 42m 38s and 1h 36m 24s
(above tests run repeatedly: these numbers are the fastest numbers for each configuration)
I have nothing else running for these tests, except for Activity Monitor. What I've observed with Activity Monitor: the old G5 was pegged at (or very near) 100% CPU the whole time. Mac Pro with CS2, Photoshop ran most of the time on one CPU at a time, but spiked up as high as 250% CPU usage just for Photoshop.
I haven't seen Photoshop CS3 use more than 80% of one processor the whole time on the Mac Pro. Mostly it sits around 35%.
One more informal test: if I open that same file and downsample from 400ppi to 200ppi, CS2 does it in 1m 40s. CS3: 6m 57s. I don't have the iMac any more so I can't tell you how long it would take there.
In both CS2 and CS3 the scratch disk is my startup volume, but it's a RAID. I can't add any more drives except for external drives. I could have configured it to one dedicated system drive and a second scratch volume made up of the remaining three drives, but I consulted with people who know RAID better than I do who agreed that since everything is going through the SCSI controller and everything gets written to multiple drives in order to make it faster that I'd get a performance hit by splitting the RAID into two volumes, even if multiple processes are trying to get at the same drive array. Even adding a Firewire 800 drive for scratch would be slower than using the RAID. Or so I've been told.
So, this seems absurd. CS3 is not using Rosetta, right? So it should be flying on my machine. What on earth could I have done to a fresh CS3 (demo) install to make it slower than CS2 on my old G5? Is the CS3 demo crippled? Is there a conflict having CS2 and the CS3 demo on the same machine?
I'm stumped.>Ya see, this is the attitude you really, really should get over. The Photoshop CS3 (10.0.1) code is just fine... it's your system (hardware/software) which, for some reason is not providing an optimal environment.
Jeff, I agree completely. You seem to be assuming that I actually think Adobe wrote bad code. In fact, I believe Adobe did NOT write bad code (and I wrote that) but that the condition that you are suggesting (CS3 being slowed by having having scratch and system on the same volume to a far greater extent than CS2) could only be caused by bad code by Adobe. Since I believe that, as you say, a universal difference of this magnitude between CS2 and CS3 would be noticed by huge numbers of users, I doubt that what I am seeing is the result of having scratch and system on the same volume.
In case I'm being less than clear:
Scratch and system were on the same volume for CS2.
Scratch and system were on the same volume for CS3.
On my system CS2 performs tasks three to four times faster than CS3.
ergo, either there is some problem other than scratch and system being on the same volume (perhaps something that exacerbates the scratch/system/same volume issue, OK, I accept that possibility) or else the change has been between CS2s and CS3s handling of scratch disks.
If for the sake of argument we rule out the possibility that CS3 handles the condition of scratch and system being on the same volume worse than CS2 does, the only possibility left is that there is SOMETHING ELSE WRONG WITH MY SYSTEM.
I am trying to find out what that other thing is. You're the one insisting that scratch and system being on the same volume is the cause of the CS3 slowdown. Accusing me of not believing that there's something wrong with my system misses the mark entirely. I ABSOLUTELY believe there is something wrong with my system.
> Your RAM tests sound pretty thorough, but if I had your large-files workflow I would buy two (or preferably 4) 4-GB sized matched RAM DIMMs, remove all the existing RAM, and install only the new RAM to further test whether or not the old RAM is anomalous.
Thanks Allen,
Actually, this is exactly what I've done, though in a different order. My system shipped with two 1GB chips. I bought two 4GB chips from OWC and installed them, and found my CS2 performance to increase significantly. It was only then that I tried installing the CS3 demo. When I found CS3 running my tests more slowly than expected, I pulled the new RAM out and tried with just the original 2GB and tested both CS2 and CS3 again. Then I took the original 2GB out, put only the new RAM in and tested CS2 and CS3 again, finding the same results. Currently I have all 10GB in the system and for the moment I'm setting aside the possibility of a problem with the RAM (or at least setting aside the possibility that the RAM chips are just plain bad) because that would indicate that both the new and the old RAM are both bad in the same way. That seems unlikely.
So I guess I'll have to drag the system down to the Genius Bar if I don't see an improvement from rearranging my hard drives.
The update there is that last night I backed up my system, and this morning I deleted my RAID5 set, blowing away everything on my system until I can restore from backup. The new configuration is 1 JBOD drive plus three drives attached as RAID0.
Unfortunately, neither of the new volumes is visible when I go to restore from backup. For the moment, this little experiment has cost me my entire system. The upshot is that it may be some more time before I have any more information to share. Even when I do get it working again, I can expect restoring to take the same 12 hours that backing up did.
I will certainly post here when I've got my system back. -
To run a piece of PL/SQL code, in TT is much slower than in ORACLE.
A piece of PL/SQL code , about 1500 lines, package is named rtmon_event, function in it is named rtmon_SHOLD_CUS_RPT;
the PL/SQL code is run in ORACLE.
Now I want to get fast speed, I think of TT.
I rewrite the PL/SQL code by grammer in TT.
But the speed in TT is much slower than the speed in ORACLE.
In ORACLE, to run the PL/SQL code, it need 80 seconds; but In TT, to run the PL/SQL code, it need 183 seconds;
How can I resolve the problem?
Btw: there are some joins of 2 tables, or 3 tables in rtmon_event.rtmon_SHOLD_CUS_RPT, and some complex DML in it.
The run method is :
declare
a number;
begin
a := rtmon_event.rtmon_SHOLD_CUS_RPT ;
end;
Thanks a lot.The easiest way to view a plan is to use ttIsql and issue the command:
explain SQL-statement;
For example:
explain select a.ol1, b.col2 from taba a, tab b where a.key = b.key;
See the documentation that 'hitgon' pointed you to to help you interpret the plans.
Chris -
Why does this forum perform much slower than form forum in metalink?
I feel strongly that this forum performs much slower than the form forum in metalink where there are even more active and more issues created there.
I don't know why Oracle creates two form forum, which one is faster and another one is slower.
What is the difference b/w them besides here is jsp pages and over there is plsql pages?Oracle certainly allows you to have users that do not have roles. Or users that don't have any system privileges. Or users that don't have any object privileges.
If you want the query to return a row for every row in DBA_USERS, you would need to outer join all the other tables to DBA_USERS.
Justin -
ACR processing in CS6 much slower than CS5
A big advantage of hosting ACR in 64 bit CS5 vs in bridge was that then ACR would process multiple images at once when saving them to jpg which would reduce processing times by 30% or more. For some reason this doesn't seem to be the case with CS6. I just did a short test and CS6 won't process multiple images at once, and was 33% slower than CS5 at saving a batch of 5dmkii images to jpeg.
Has anyone else noticed this? Hopefully this limitation is due to beta status and the final release of ACR will be fully optimized for 64bit processing.It seems strange that their is hardly any improvement in 64 bit cs6 speed vs 32 bit cs5. I agree, gpu support for acr would great!
Date: Wed, 11 Apr 2012 15:25:25 -0600
From: [email protected]
To: [email protected]
Subject: ACR processing in CS6 much slower than CS5
Re: ACR processing in CS6 much slower than CS5
created by Noel Carboni in Photoshop CS6 - View the full discussion
Bridge in CS5 was 32 bit only, and I observed the 32 bit converter as run by Bridge (or Photoshop 32 bit) wouldn't exercise all the cores, so the way I interpret your numbers is as follows:
1. ACR7 is 50% slower than its predecessor (34.25 seconds when run in Photoshop 64 bit vs. 22.59).
2. Bridge is now 64 bit, so you're running the same code in both cases, which is why you're seeing essentially the same number in Bridge as Photoshop.
-Noel
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Start a new discussion in Photoshop CS6 by email or at Adobe Forums
For more information about maintaining your forum email notifications please go to http://forums.adobe.com/message/2936746#2936746. -
I using FF-5-Stable. It much slower than Google Chrome 13. & crash during upload ??
I using FF-5-Stable. It much slower than Google Chrome 13. & crash during upload ??
it takes too much time to open a page.
Always Crash during upload..for big or small file..
It hangs and closed through Task manager or Reboot...1. What are you "uploading"?
2. Have you tried a new Profile? Profiles don't last forever, and after going through a few major version updates "things" slow down, depending upon how much stuff the user has added to Firefox. Personally, I have created a new Profile for every new version of Firefox I have installed, up through Firefox 4.0. Didn't do that for Firefox 5, and probably won't for Firefox 6, due to the new fast release schedule and the fact that Firefox isn't being changed as much from one version to the next as it used to be changed under the 10 to 14 month intervals between major versions.<br />
http://kb.mozillazine.org/Creating_a_new_Firefox_profile_on_Windows -
How Can I Improve Mavericks Performance (much slower than 10.8)?
When I upgraded to OS 10.9, I immediately saw a significant slower performance than with 10.8 or 10.7 (which I had been using for about two years). One big difference was a delay with the boot disc thrashing a lot when I started the computer and when I launched any app. That is, after starting my Mac Pro (2008), once the windows are all visible, there is a 30+ second delay (with the boot disc thrashing a lot) before it responds. A very similar thing happens when I launch any app. For example, when I launch iPhoto, after the photos appear, it takes 30+ seconds before it reponds to any mouse clicks. Under 10.7 and 10.8, there was about a 5 second delay (which I always thought was Faces doing its thing). This disc thrashing and delay before the app will respond happens with every app (Word, iMovie, Disc Utility, etc.) These delays never occured under 10.7 or 10.8.
A few people on the Apple Support forum suggested I run EtreCheck and remove various apps that they said could cause a problem with the OS. I removed every app they suggested, but I do not see any difference in performance. In my opinion, OS 10.9 has implemented something new that is causing my Mac Pro to run much slower.
I just ran a Safe Boot (using shift key while starting). I don't see any difference.
I would appreciate any advice.
EtreCheck Results:
Hardware Information:
Mac Pro (Early 2008)
Mac Pro - model: MacPro3,1
2 2.8 GHz Quad-Core Intel Xeon CPUs: 8 cores
8 GB RAM
Video Information:
NVIDIA GeForce 8800 GT - VRAM: 512 MB
Audio Plug-ins:
BluetoothAudioPlugIn: Version: 1.0
AirPlay: Version: 1.9
AppleAVBAudio: Version: 2.0.0
iSightAudio: Version: 7.7.3
System Software:
OS X 10.9 (13A603) - Uptime: 0 days 1:57:13
Disk Information:
ST3750640AS P disk0 : (750.16 GB)
EFI (disk0s1) <not mounted>: 209.7 MB
Macintosh HD (disk0s2) /: 749.3 GB (299.96 GB free)
Recovery HD (disk0s3) <not mounted>: 650 MB
ST31000340AS disk2 : (1 TB)
EFI (disk2s1) <not mounted>: 209.7 MB
Movies&DVDs (disk2s2) /Volumes/Movies&DVDs: 999.86 GB (140.99 GB free)
ST31000340AS disk1 : (1 TB)
EFI (disk1s1) <not mounted>: 209.7 MB
OS10.6 (disk1s2) /Volumes/OS10.6: 999.86 GB (882.64 GB free)
USB Information:
Apple, Inc. Keyboard Hub
Apple, Inc Apple Keyboard
NEC Corporation USB2.0 Hub Controller
Canon MX850 series
Apple Inc. Bluetooth USB Host Controller
FireWire Information:
Apple Computer, Inc. iSight 200mbit - 400mbit max
Thunderbolt Information:
Kernel Extensions:
Problem System Launch Daemons:
Problem System Launch Agents:
Launch Daemons:
[loaded] com.adobe.fpsaud.plist
[loaded] com.microsoft.office.licensing.helper.plist
Launch Agents:
User Launch Agents:
[loaded] com.adobe.AAM.Updater-1.0.plist
[loaded] com.adobe.ARM.[...].plist
[loaded] com.adobe.ARM.[...].plist
User Login Items:
iTunes
Mail
3rd Party Preference Panes:
Flash Player
Flip4Mac WMV
Growl
Java
Perian
Internet Plug-ins:
AdobePDFViewer.plugin
AdobePDFViewerNPAPI.plugin
Default Browser.plugin
Flash Player.plugin
FlashPlayer-10.6.plugin
Flip4Mac WMV Plugin.plugin
googletalkbrowserplugin.plugin
JavaAppletPlugin.plugin
npgtpo3dautoplugin.plugin
o1dbrowserplugin.plugin
QuickTime Plugin.plugin
RealPlayer Plugin.plugin
Silverlight.plugin
User Internet Plug-ins:
CitrixOnlineWebDeploymentPlugin.plugin
Bad Fonts:
None
Time Machine:
Skip System Files: NO
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 749.3 GB Disk used: 449.33 GB
Movies&DVDs: Disk size: 999.86 GB Disk used: 858.87 GB
Destinations:
Data [Network] (Last used)
Total size: 3 TB
Total number of backups: 79
Oldest backup: 2012-12-18 07:58:20 +0000
Last backup: 2013-11-30 01:06:05 +0000
Size of backup disk: Too small
Backup size 3 TB < (Disk used 1.31 TB X 3)
Top Processes by CPU:
13% mds
1% WindowServer
1% EtreCheck
0% ocspd
0% fontd
0% syncdefaultsd
0% aosnotifyd
Top Processes by Memory:
549 MB iTunes
385 MB mds_stores
319 MB com.apple.MediaLibraryService
139 MB com.apple.IconServicesAgent
131 MB Mail
106 MB com.apple.WebKit.WebContent
82 MB soagent
82 MB Safari
74 MB PhotoStreamAgent
74 MB WindowServer
Virtual Memory Statistics:
3.56 GB Free RAM
3.38 GB Active RAM
265 MB Inactive RAM
821 MB Wired RAM
433 MB Page-ins
0 B Page-outsFirst, back up all data immediately unless you already have a current backup. If you can't back up, stop here. Do not take any of the steps below.
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.
Triple-click anywhere in the line below on this page to select it:
syslog -k Sender kernel -k Message CReq 'GPU |hfs: Ru|I/O e|find tok|n Cause: -|NVDA\(|pagin|timed? ?o' | tail | open -ef
Copy the selected text to the Clipboard by pressing the key combination 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). I've tested these instructions only with the Safari web browser. If you use another browser, you may have to press the return key.
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.
Disconnect all non-essential wired peripherals and remove aftermarket expansion cards, if any.
Reset the System Management Controller.
Run Software Update. If there's a firmware update, install it.
If you're booting from an aftermarket SSD, see whether there's a firmware update for it.
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.
Check your keychains in Keychain Access for excessively duplicated items.
Boot into Recovery mode, launch Disk Utility, and run Repair Disk.
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, and Idle 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. -
Why is Thunderbolt so much slower than USB3?
I'm considering two different drives for Time Machine purposes. Both are LaCie. Either of these:
- Two Porsche 9233 drives, 4 TB each
OR
- A 2Big Thunderbolt drive, 8 TB, which I would configure as RAID 1 (a mirrored 4 TB volume)
My question is this: I've viewed both of these product pages via the Apple Store, and I noticed that LaCie's information for the Thunderbolt drive makes it a lot slower than the USB drives. Meaning: They say that the 2Big Thunderbolt drive maxes out at like 427 MB/s, whereas the Porsche USB drives max out at 5 GB/s. Why is this? Isn't Thunderbolt supposed to be a lot faster than USB (any iteration)?Not an easy question, short of a whole lot more detail on the construction of those two devices. You're likely going to need to look at the details of the drives and probably at some actual data. You're really looking for some real benchmark data that you can compare, in other words. Particularly which (likely Seagate) drives are used in those (IIRC, Seagate bought LaCie a while back), and what the specs are.
The hard disk drives themselves are a central factor, where the drive transfer rate is a key metric for big transfers (and that can be based on drive RPM as much as anything, faster drives can stream more data, but they tend to need more power and run hotter), and access (seek) time for lots of smaller transfers (faster seeks mean faster access, so good for lots of small files scattered around). Finding the details of the drives can be interesting, though. I've seen lots of cheaper disks that spin very slowly, which means that they can have nice-looking transfer times out of any cache, but then... you... wait... for... the... disk... to... spin.
The device bus interfaces can also vary (wildly) in quality. I've seen some decent ones, and I've seen some USB adapters that were absolute garbage. Some devices have decent quantities of cache, too. Others have dinky caches, and end up doing synchronous transfers to hard disks, and that's glacial compared with memory speeds.
One of your example configurations also features RAID 1 mirroring, which means that each write is hitting both disks. The writes have to pass through a controller that can do RAID 0 mirroring, and that can write the I/O requests to both drives, and that can read the data back from (if it's clever) whichever of the two drives is best positioned in related to the sectors you're after. If it's dumb, it won't account for the head positions and drive rotation and sector target. Hopefully the controller is smart enough to correctly deal with a disk failure; I've met a few RAID controllers that weren't as effective when disks had failed and the array was running in a degrated mode. In short, RAID 1 mirroring is a reliability-targeted configuration and not a performance configuration. It'll be slower. Lose a disk in RAID 1 mirroring, and you have a second disk with a second copy. If the controller works right.
If you want I/O performance without reliability, then configure for RAID 0 striping. With that configuration, you're reading data from both disks. But lose a disk in a RAID 0 striping configuration and you're dealing with data recovery, at best. If the failure is catastrophic, you've lost half your data.
But nobody's going to make this choice for you, and I'd be skeptical of any specs outside of actual benchmarks, and preferably benchmarks approximating your use. Reliability is another factor, and that's largely down to reputation in the market; how well the vendor supports the devices, should something go wrong. One of the few ways to sort-of compare that beyond the reviews is the relative length of the warranty, and what the warranty covers; vendors generally try to design and build their devices to last at least the length of the warranty.
Yeah. Lots of factors to consider. No good answers, either. Given it's a backup disk, I'd personally tend to favor eliability and warranty and less about brute speed.
Full disclosure: no experience with either of these two devices. I am working with Promise Pegasus Thunderbolt disk arrays configured RAID 6 on various Mac Mini configurations, and those support four parallel HD DTV video streams with no effort. The Pegasus boxes are plenty fast. They're also much more expensive than what you're looking at. -
Why is my iPhone4 so much slower than my iPad2 on my home wireless network?
I have installed a new Linksys 3200 wireless router. And, I find that my iPhone4 is MUCH slower on the wi-fi network than my iPad2. I expected it to me slower, but not this much! Here are the speedtest results:
iPhone4 - Ping at 399 ms, Download speed at .73 Mbps, Upload speed at 1.00 Mbps
iPad2 - Ping at 84 ms, Download at 5.63 Mbps, Upload at .91 Mbps
My cable modem is supposed to be rated at 5/1 (Download/Upload), so it seems that the iPad is maximizing the use.
I've tried a complete shutdown and restart (modem first, then router, then computer). And, it seems a little faster, but not much.
Is there something wrong with the iPhone? I don't remember it being so slow before...and it seems faster on my office network!
Suggestions, please.
RobertP.S. It also seems to lose the connection from my iPhone4 pretty easily. I have to go back to settings and reset the wireless network. (Don't have to on the iPad).
Robert
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