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4

With Yosemite, we're noticing an somewhat, but not totally, subjective slowdown to all aspects of the OS, despite the minimum 4GB RAM. At our school we are actively replacing any faculty member's MBP's internal HDD with a SSD if they complain of 'slowness' and they can demonstrate it concretely. This can be in the form of a slow startup; slow-loading apps; ...


3

Thunderbolt 2 supports data rates of up to 20 Gb/sec. The newest SATA spec, V3.2, only does 16 Gb/sec. There should thus be no difference in performance between an internal SSD (connected via SATA) and an external SSD (connected via Thunderbolt).


3

Your key problem isn't the performance of your disk. Your key problem is the available space on your internal disk. 30 GB out 500 GB isn't enough for your kernel to breath. This is 6% of available free space. Everytime your kernel is pageing out a page of main memory, it will waste too much time to find tiny available holes within this 30 GB. Here is my ...


3

Since I have a much newer system I couldn't accurately test with a 119 MB file as it took less then a second to copy in Terminal. So I created several much larger files, up to 2 GB, using dd and /dev/random as the source and made duplicates. I then rebooted and then did timed copies of each of the sets, one in Terminal and the other in Finder. This way ...


2

To answer this question accurately, you will need to get some statistics on how much RAM you are currently using. But in general, more RAM is going to improve things, especially if you're still on 4GB. On the other hand, the 2009 iMac is really reaching EoL at this point -- according to Mactracker, the support status for that machine is currently "Vintage". ...


2

That's perfectly normal for Yosemite - the new rule is "empty RAM is wasted RAM." The system will fill the RAM so that any process needing to quickly use it has it already available, rather than having to request more. As you see from your pictures, the Swap file is zero, so nothing is being traded off to the hard drive. That's about as good as it gets - ...


2

I would recommend backing up all of your data to an external hard drive or online and reinstalling OS X from scratch before buying an entirely new hard drive. You're doing a good job on routine maintenance, but after a certain point those only become stop-gap measures for an operating system that has only been upgraded on top of other upgrades (and so on), ...


2

Intel is making big improvements in the Integrated Graphics performances. They are actually taking a portion of the Nvida market in doing that. To Intel, the Nvidia is just a parasite, so if they can do better with the iGPU performance, ppl wont need it. Intel will be introducing next gen CPU with some powerful iGPU in 2015. There is no official ...


1

First: Make sure you have an up-to-date backup. Assuming no hard drive issues, this Sounds like Spotlight is having problems indexing. I have also seen slow app launching due to bad font caches. I assume that you have let the system run for a while so that Spotlight can have a chance to update its databases. This can take a while, although on a ...


1

"I would like to know if hard drive access speed is a bottleneck to my system currently." Of course! There are two aspects to a disk storage system: Bus speed Storage medium speed On ANY given bus, e.g., SATA, SATA2, SATA3, a mechanical HDD will be an order of magnitude slower than an SSD for a given link speed. The secret is to always use an SSD that ...


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Each Firewire controller will be treated independently by OS X, and each controller will have its bandwidth set by the slowest device connected. So you could daisychain your devices but will only see 400Mb/s throughput, requiring you to use separate Firewire adapters if you wish to see your OWC drive running at full speed.


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for me, the culprit was using Yosemite's new system wide dark mode (Systemsettings->General->use dark status bar and dock). Switching back to bright mode reduced the load of WindowServer for me from >100% to 2-7 %. So if you enabled that, check for that. ;-)


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Here's what worked for me: if you've got a second screen attached, disconnect it, reboot, reconnect Close Google Chrome Still no good? Try this https://discussions.apple.com/thread/6623697



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