OS X :: Snow Leopard Slow Performance In 64-bit Mode
Sep 19, 2009
Not sure why, but when I run my SL in 64 bit it runs significantly slow when compared to 32-bit on my umbp late 2008 2.4 ghz, 4gb ram and 500gb hdd. when running on 32-bit, my umbp boots in less than 15 sec and loading the native apps are very snappy and responsive (safari/finder/preview, etc). But when I boot in 64-bit. It takes like 45 sec to boot (it keeps spinning the white circle during the boot up) and even loading safari and rendering the default page will take like couple of secs which is noticeably slow and opening pdf in preview is slow and scrolling the pdf is noticeably slow and sometimes hangs and which does not happen in 32-bit mode.
If I click on application folder on the doc, it opens the folder before I release the mouse button in 32-bit mode, but in 64-bit, it takes upto 5 sec to open the folder. I tried this couple of times including rebooting the umbp. It is not crashing in 64 bit, but it is noticeably slow. Which is making me depressed because I was thinking to upgrade this laptop to 6gb ram. Now I am not sure if i want to upgrade.
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May 24, 2012
I recently had to upgrade my OS to 10.6 (then to 10.6.8 via update). After the upgrade fro 10.5 though my computer had been running slow, especially safari. I haven't do anything different besides running the update. The only new program(s) I have is Diablo 3 which I know tkes up a lot of processing power, but that wouldn't explain the overall, extreme drop in speed when I'm not playing it.
Info:
MacBook Pro, Mac OS X (10.6.8)
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Aug 28, 2009
I did a bit of reading on the internet, and it looks like most computers will not boot into 32-bit mode by default with 10.6. It appears that if while booting the user holds the 6 and 4 keys, the computer will boot into 64-bit mode.
Does anyone know anything about this? Will the computer always boot into 64-bit mode if this is done once? Will it even make a difference? Will the average user want to do this?
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Apr 23, 2009
People are talking about the increased ZFS support in Snow Leopard and how this is great news for SSD's but so far I have not been able to find any figures as to what kind of performance increase we are likely to see.
Does anybody have any idea yet? Maybe through using Solaris or something. Also heard that it will not be possible to boot of a ZFS under OS X, is this true? If so, is there really much point in including it in Snow Leopard?
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Sep 2, 2009
Anyone noticed extremely choppy flash performance? I use Safari as my browser, and in Leopard YouTube videos (for example) were smooth and fine. Now in Snow Leopard flash is very choppy indeed.
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Sep 2, 2009
I installed Snow Leopard recently and have had some really annoying performance issues/ hang ups when running multiple applications.
I had no problems before and activity monitor isn't showing anything out of the ordinary.
2.4gz Intel Core 2 Duo with 2gb 667 mhz ddrs sdram
Late 2008 macbook
Like I said, I've never had any performance issues before this and now I'm getting frequent hang ups when multi-tasking. By hang ups I mean the little spinning wheel pops up and I can't do anything.
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Aug 27, 2009
I getting my copy of SL next from Macmall next week. I am reading some reviews that thou SL is snappier than Leopard, but it seems the application performance is slow compared to Leopard .
I am using applications like MS office 2007, firefox 3.x and parallels with linux & windows. Anybody there who has already installed SL can tell us what do they think about application performance in SL.
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Aug 30, 2009
I just noticed that playing YouTube Video in Safari or Google Chrome the CPU usage is not less than 70-75 % on both cores ( MacBook 2.4ghz unibody with SL 10A432 32bit kernel ).
On Firefox the CPU usage on the same YouTube video is no more than 40-45% on both cores.
Anyone else notice this ?
I guess it may happen because flash plugin is 32 bit and used in some sort of sandbox in Safari now because Safari is 64bit and flash plugin is 32 bit ( in Chrome everything run in sanbox and I got the same CPU usage on Leopard ).
Firefox is 32 bit application as Flash is and I'm guessing thats why it uses less CPU.
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Oct 23, 2009
I have a fairly old imac (it's about three years old) and although I've upgraded the ram, it's feeling a bit sluggish now. Do you think I would experience any performance benefit from upgrading to snow leopard? It still seems like a great machine so can't really justify upgrading to the new imacs.
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Feb 13, 2009
Since I've heard snow leopard incorporates 64-bit features, does this mean iLife '09 itself will encode movies faster, idvd encode faster etc.? I'm not familiar with 64-bit advantages.
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Aug 18, 2010
Has anyone ran some tests with the new Snow Leopard Graphics Update Apple just released. I am primarily interested in the performance increases it offers SC2. I am at work and will not be able to install it until late tonight, after which I will post before and after FPS and settings for SC2.
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May 11, 2010
I'm having some problems with Snow Leopard, in 64 bit mode. Is there a way to turn it to 32 bit ? I'm using a Mac mini 2.53 GHz Core 2 Duo with 4 GB (the max it will ever have), so I don't think it needs 64 bit.
Is there any advantage/disadvantage to run in 32 bit, if you just have 4 GB of ram ?
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Sep 18, 2009
Sleep Mode does not seem to be working automatically in Snow Leopard. It sleeps when activated from the Apple Menu but not when set to sleep in Energy Saver Preference Pane. The screen dims, goes black but the computer does not seem to sleep nor does the hard drive spin down. Anyone else having a problem like this? It was working fine in Leopard (just noticed this problem now, but have had Snow Leopard installed for a couple of weeks and never noticed it)
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Oct 3, 2009
I installed Snow Leopard last night and since, I have been trying to boot it into 64-bit mode. I have tried holding down the "6" and "4" keys at startup, but that did not work.
Late 2008 2.4GHz Aluminum MacBook
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Jun 19, 2012
Restarted macbook in safe mode (i just pressed shift upon startup and logged in) to correct the resolution for my display settings that were affected earlier today when connecting to an overhead projector. The resolution is back to normal, but now everything is delayed. Moving between windows, opening word, opening an email, is all slow and delayed. This computer has never been this slow.
Info:
Mac OS X (10.6.8)
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Mar 6, 2012
I got a Macbook with OS X. I was too impatient to get the administrator name and password from the previous owner (BIG MISTAKE).I thought I'd follow the instructions from "How To Create A New Administrator Account" (url..) as they seemed easy and straight forward.
I followed the first step of the process and got into single-user mode (black screen white text).I saw that black screen with white text and thought, "Woah man, I'm out my my depth. My brother typed 'help' in order to find out how to exit single-user mode, he said that's how it's done on windows? (I also have limited knowledge about Windows). I typed in various things such as 'reboot' in an attempt to exit. Eventually the battery died. I turned the Macbook back on and the grey screen with the apple logo with the spinning wheel appeared. The spinning wheel span and span but the computer will not start up.
Info:MacBook
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Mar 24, 2012
I tried to boot my mid 2009 macbook pro running snow leopard into 64 bit mode by holding down the 6 and the 4 key on the keyboard after shutting it down and then powering it back up again, it won't start up, it's stuck at the apple symbol with the rolling cursor
Info:
MacBook Pro
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Mar 25, 2012
Randomly today when I started up my Imac I7... there was progress bar at the bottom much like if you updating your iphone... it then booted into safe mode...I restarted and it booted normal...
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Apr 4, 2012
I just did a software update yesterday for my computer and now it will not stay in sleep mode. (I updated Safari and some other stuff).
Info:
iMac, Mac OS X (10.6.8)
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Jun 24, 2012
I would like to find out the reason why my MBP does not go automatically in sleep mode.
Info:
MacBook Pro, Mac OS X (10.6.8)
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Sep 12, 2010
I have a Macbook Pro A1229 (Santa Clara) with a broken CD/DVD Drive and would like to install Snow Leopard.
I also have a G5 PPC running Leopard. Can I use the MBP in Target Disk Mode through the G5 to install Snow Leopard ?
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Apr 19, 2012
So this problem started yesterday where whenever I try to play a video (youtube,or any other site) neither the sound nor image works, but whenever i make the video fullscreen, everything works perfectly. It's a bit annoying if I want to watch a video or listen to music off youtube whilst doing other things.
Info:
MacBook Pro, Mac OS X (10.6.8)
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Apr 26, 2012
I was deleting some files last night and when I came to booting up this morning my Macbookpro (5 years old) i was greeted with a user login screen? put in my password, but all i get is the space screen and no further action...? cant get apps o my bar?
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May 24, 2012
The dock has a quick key combo to show and hide. When it's in hide mode and my mouse hovers below (were it is located) it re-appears. How can I make it to only show and hide with my quick key combo?
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Jun 3, 2012
Everytime my mac goes to sleep or i leave it for a while it switches off my wireless internet then i have wait for at least 10 minutes before it ill comeon line again.
Info:
Mac OS X (10.6.8), Using aiport
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Jul 4, 2012
My macbook pro appeared to be crashed with harddisk problem at start time.. unable to boot to normal login screen. When I run in single user mode, I dont seem to see my thumbdrive, or external device.
I connected them via the USB ports on my Macbook pro (17")(Snow Leopard) I checked /dev/disk* and saw only disk0 (disk0, disk0s1, disk0s2, disk0s3). I never get to see disk1 no matter what I tried. (I've various MSDOs format, or NTFS format disks).
I followed the advise here: [URL] Am I supposed to be able to see the drive the moment I connect it to the port?
Info:
MacBook Pro, Mac OS X (10.6.4)
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Jun 13, 2009
I run a 24" iMac 500GB 4GB 2.8GHz 2600HD Pro. Its the first Al iMac, and the highest spec at the time.
I read the requirements, my iMac meets them all accept OpenCL, would this, by any chance in anyway slow down my iMac?
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Sep 4, 2009
I just upgraded to 10.6 the other day on my new uMBP (15" 2.66ghz, 9600 GT). I haven't had much time to play around with it yet but I realized that the wireless seemed a lot slower in snow leopard running safari.
I would have some issues with web pages loading and youtube buffering clips. Anyone else notice any difference in wireless before?
I'm pretty sure it's slower than it was in Leopard but I can't make any direct comparisons and I haven't been using my Macbook Pro for a few weeks.
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Oct 7, 2009
Ever since I've loaded snow leopard, it seems to be a little less responsive compared to leopard. Mainly in the internet browsers. Does any know why or what I can do?
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Dec 5, 2009
I have my computer password protected. Since the switch to Snow Leopard, why does it take around 5-8 seconds for it to authenticate the password?
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