1
vote
0answers
21 views

Preview scrolling speeds?

When using Preview (on OS X 10.8 & 10.9) I noticed that the scrolling speed is too fast. I often read long documents and want to see in advance what are the chapters coming a few pages later. ...
0
votes
0answers
18 views

Advanced techniques to diagnose performance problems on OS X via DTrace or other means?

I am having some severe performance problem with my OS X workstation at the moment that is proving to be exceptionally elusive. I normally can hunt things down with a handful of tools such as top or ...
0
votes
1answer
39 views

Why would my Mac be slow after inactivity and then get to full speed after 20-30 minutes of use?

My Macbook appears to get slow after a period of inactivity and then get itself back to full speed after 20-30 minutes. While I have some ideas I'm wondering if anybody else has seen such behaviour ...
0
votes
0answers
11 views

How does having a full hard drive affect performance? [duplicate]

My OSX-using friends insist that having a hard drive that is nearly full (e.g. 90% full on a 250GB disk) causes performance problems. It seems to be a pretty common opinion amongst my (mostly ...
1
vote
1answer
113 views

using external hdd slows down my mac

When I use an external drive via usb, my computer really slows down giving me no choice except reboot. I watched memory usage with activity monitor. Free memory decreases by time and inactive memory ...
3
votes
2answers
145 views

Changing CPU frequency policies in OS X

I have Core i5 processor with nominal 2.3 Ghz speed. But, according to Intel Power Gadget, most of the time the frequency is much lower. Even during intensive usage. It's 0.8-1.6 Ghz. I noticed that ...
1
vote
2answers
133 views

Looking for a free system monitoring tool

I'm looking for a system monitoring tool, preferably a free one. I don't care if it's an actual app or sits in my terminal. Activity Monitor doesn't give me all the information I want at once. ...
1
vote
1answer
193 views

Does RAM Disk Improve OS X Performance?

I stumbled this article explaining how mounting RAM disk can improve OS X performance up to 40× which of course is just a a hyperbole. My question is whether the suggestion made by them valid for ...
3
votes
1answer
50 views

How can I log OS X Server disk performance?

I know Activity Monitor exists to view disk i/o and other performance metrics. However, does Activity Monitor have the ability to log any of these metrics? If not, how can I log these metrics into a ...
2
votes
2answers
30 views

Measuring page download speed Network Link Conditioner

I'd like to use Network Link Conditioner in conjunction with a local page download speed tool so that I can see how long certain elements take to download when I restrict connection speeds. Can ...
2
votes
0answers
65 views

What causes playing a video in browser to take up all the RAM?

I've been noticing lately that when I'm playing a video on my Mac from say Hulu, Netflix, Youtube, any video site via a browser, the computer gets extremely laggy for 5 minutes and then acts normal. ...
1
vote
1answer
3k views

Monitor GPU performance on OSX

Is there an application or tool that can monitor GPU performance on OS X? Specifically I would like to see the current speed/utilization and temperature of the integrated NVIDIA chip. For Windows, ...
1
vote
0answers
66 views

Does free disk space actually help mac performance?

Anyone will tell you that freeing disk space will make your mac faster - specially noticeable if your disk is almost full. I don't know if that's true. Is it? And why, exactly? I just don't see how ...
0
votes
1answer
590 views

How to find out which Safari tab is using massive memory?

As described in my other question, Safari on OS X 10.6. is causing me massive problems (with my way of working like having many tabs in Safari open for a long time). I just realized that after ...
1
vote
2answers
59 views

Mac is really slow and I can't get Apps to open

When I try to open an App it does nothing. I go online and it is extremely slow. I have tried some of the idea's on here but, nothing has helped. I also tried to download a Clean up program. It isn't ...
1
vote
1answer
59 views

Best version of OSX for 2008 iMac?

(This is a follow-up to How to improve old, slow iMac -- new SSD? Or more RAM?) I replace the HD on our old 2008 iMac 8,1 with an SSD, and it seems much faster. However, it WAS running 10.9; now it's ...
1
vote
3answers
4k views

High memory usage, macbook pro retina feeling sluggish

My Macbook Pro Retina seems to be feeling sluggish and I don't think it should at all. I'm running: photoshop, 1080p movie on VLC plugged into a Thunderbolt Display. Looking at the activity monitor ...
2
votes
3answers
805 views

Web browsing on Mac slows down after a few days of use

When trying to browse any website, such as nytimes.com, yahoo.com, etc, it take sometimes anywhere from 15s-120s for the page to display. For example, in Chrome, when I browse to nytimes.com, in the ...
1
vote
0answers
98 views

Macbook Pro Late 2011 stuck at 0.8 GHz

I have been experiencing a lot of problems with my Macbook Pro slowing down and crawling through small tasks like getting mail and opening Launchpad. I have 8 GB of 1333 MHz DDR3 memory and a 2.2 GHz ...
0
votes
1answer
1k views

Mac has become insanely slow : Processes SystemUIServer, UserEventAgent and loginwindow using a lot of memory

I have been using my Mac for for many months without any problem. But recently all of a sudden the Mac became insanely slow. I opened Activity Manager to see what was happening. For three processes ...
1
vote
2answers
286 views

Performance issues, can I recover memory?

In the past month I am having some serious performance issues with my MacBook Pro (2008 model). From the activity monitor, I get that the CPU usage is low (25%), disk usage is low (256 GB SSD drive, ...
0
votes
1answer
384 views

2010 2.66 GHz 12 core Mac Pro not utilizing all 24 threads?

I just recently purchased a 2010 Mac Pro. I am wondering why all 24 threads never go past 50% usage when doing CPU intensive tasks. My coworker has a 2009 2.93 GHz 8 core Mac Pro and we both tried ...
2
votes
2answers
470 views

MBP w/ OS X 10.8.3 Performing Quite Slowly Lately

My MBP (2.66 GHz i7, 4GB RAM, 500GB HDD) is about two or so years old. It's been running like a champ for most of its life. However, within the past few months, I've noticed a considerable degradation ...
0
votes
2answers
219 views

2010 Mac Pro beachballing/freezing

My machine is a 2010 Mac Pro 2 x 2.66 6-core intel xeon with 32 GBs of ram running Mac OS X 10.8.3. Just the other day it started to beach ball after about an hour of use. It doesn't make any ...
2
votes
1answer
203 views

Is there a guideline for the max number of active fonts

I manage my fonts through FontExplorer X. Today I noticed that I have 770 fonts activated. All legitimately licensed, by the way. The Adobe CS family installs a bunch, I've purchased and have received ...
1
vote
1answer
111 views

Hot File Clustering with multiple partitions

I'm planning a performance-oriented clean install of OS X 10.6 and I was wondering if the hot file clustering feature will exists only on the boot partition or if there will be one for each partition ...
1
vote
1answer
150 views

/usr/bin/nice and Handbrake

This is really two questions... If a process is run with nice (/usr/bin/nice in the default OS X Mountain Lion installation) will it run processes in equivalent time compared to that process being run ...
1
vote
2answers
601 views

Factory Settings to Speed Up Mac?

My iMac (2010, i3, 3.06 GHz, 4GB RAM) has been getting a little slower. My research shows memory can cause a slow performance, so I looked and most of the time, my RAM is allocated like this: . ...
1
vote
1answer
192 views

Want to increase spead and reponsiveness in older Mac

Current Information: Software: Mac OSX (10.5.8) Processor: 2.4GHz Intel Core 2 Duo Memory: 1 GB 800 MHz DDR2 SDRAM I want to get my computer moving faster, specifically around safari, itunes, ...
1
vote
2answers
297 views

How to choke network preformance on OS X [duplicate]

Possible Duplicate: How to simulate slow internet connections on the mac For testing purposes I would like to choke the performance of the network on my OS X 10.8.2 machine. I have ...
5
votes
1answer
309 views

How to isolate the most disk-active process(es) in OS X?

I have some process(es) performing a lot of drive access from time to time, however I've hitherto been unable to isolate which process or processes are performing the access. What shell command can I ...
0
votes
0answers
55 views

Is there a way to monitor the stack of execution in order to find the longest hangs?

Related to this unsolved mystery: apple.stackexchange.com/questions/62416/why-do-i-get-serious-execution-lag-on-clicks-application-switching-and-general I'm wondering if there's a way to see which ...
1
vote
1answer
172 views

Move Large, Frequent files closer to center of HDD

Is there a native/third-party utility (or native trick) to move large, frequently-used files closer to the center of the disk? I was under the impression that the OS tried to automatically optimize ...
2
votes
1answer
646 views

Why do I get serious execution lag on clicks, application switching and general usage

I have an MBP 8.1, early 2011, 13 inch, Mountain Lion. Whenever I leave it on for more than a couple hours, I get serious execution lag on every command. For example: I click something (a link, ...
19
votes
12answers
46k views

Will Mountain Lion make an older computer run faster or slower?

Performance/responsiveness is a common concern with new software, especially on older machines. In general, upgrading from Snow Leopard (10.6) to Lion (10.7) wasn't too bad, but now Mountain Lion ...
-1
votes
1answer
1k views

Can imagent in OS X Mountain Lion be made to consume fewer resources?

imagent is constantly consuming CPU cycles and a couple of GBs of "real memory" on my wife's MacBook Air since upgrading to OS X Mountain Lion. I believe this is part of the Messages app. Is there ...
-3
votes
3answers
2k views

Can a reduced number of processes lead to improved performance with OS X 10.8?

I updated to OS X 10.8 and my process count went from about 75 under Mac OS X 10.7.4(?) to 96. What can I do to fix this? I use my Mac (MacBook Pro, Mid 2010, 2.8 Ghz Core i7, 8GB RAM, 256 GB SSD) ...
5
votes
2answers
12k views

How can I monitor the FPS in OSX?

I'm looking for a solution to monitor the refresh rate of the OSX. In several reviews like this one about the retina Macbook Pro by Anandtech they report actual fps to discuss the performance of ...
1
vote
0answers
78 views

Emulating lower speed CPUs on Mac mini

I would like to ask whether it is possible to develop OS X application (especially for Lion) on a Mac mini, being able to test how the performance would be on a lower speed CPU. For example: ...
2
votes
1answer
488 views

Mac OS X disk performance monitoring

Which tools to use for detailed performance analysis of disk access? per disk per process queues latency data volume/throughput errors characterisation (read Vs write, burst, etc.) Tried iostat, ...
8
votes
6answers
8k views

Alternative activity monitors for OS X?

I’m a bit intrigued by the new detailed activity monitors and progress indicators in Windows 8 (copying files, the task monitor, network activity, etc.) It got me thinking: surely there must be some ...
1
vote
1answer
293 views

What is the performance bottleneck when launching large applications on OS X?

I have an Early 2011 13" Macbook Pro (i5 2.3Ghz). I've upgraded it to have 8GB 1333 ram and an OCZ Vertex II (120GB) SSD. There are a couple of heavy lifting apps on my mac that take roughly around ...
3
votes
2answers
3k views

Process “ubd” high CPU usage

I noticed my MBP got really slow, which must be strange with SSD and 8GB of RAM. So I opened the Activity Monitor to discover a process called ubd keeps its CPU usage very high, about 120% most of ...
2
votes
4answers
957 views

Any better way to purge the inactive memory?

Running purge command in the terminal to free the inactive memory isn't really what I think about Apple. Lion isn't doing a great at all when it comes to free the inactive memory. Free memory is ...
4
votes
1answer
2k views

Any performance gains when disabling secure virtual memory?

To disable secure virtual memory in 10.7, one does the following: sudo defaults write /Library/Preferences/com.apple.virtualMemory DisableEncryptedSwap -boolean yes However, are there any benefits ...
0
votes
2answers
322 views

Does showing a flashing time separator slow down a Mac?

Is there any reason to be concerned that showing flashing time separators would slow down my Mac, since the computer now has to keep flashing the separator? What about showing seconds? Why or why not? ...
8
votes
3answers
6k views

How would enabling FileVault alter my system and TM performance?

What are the pros and cons, performance-wise, of enabling and using FileVault? Is there any at all, or does it slow a computer down significantly or on the contrary speed it up? Also, what effect will ...
2
votes
2answers
94 views

Is there any way to hamstring my system?

I'm looking to temporarily reduce the amount of cores and RAM available to my system, as well as the processing power. I've written a server that uses epoll (Linux) and I want to get a rough ...
5
votes
4answers
6k views

How can I boost the performance of my MacBook?

I know that upgrading my MacBook with extra RAM can help boost the general system performance. Recently, I upgraded from OS X 10.5 to OS X 10.6.8. I thought that my RAM upgrade would speed up my ...
4
votes
2answers
2k views

Help identify what uses the CPU when the Activity Monitor list of all processes does not help

Problem After rebooting, and with only Activity Monitor open, my MacBook Pro (10.6, i7) shows a very high idle % (98% or higher) but then shortly after drops down to 40% - 50%. In the Activity ...