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Using /dev/zero as dd's input and output file doesn't hit the disk at all and will return ridiculous speeds like 15-20 GB/sec. Internal laptop hd (7200 rpm, sata): Write=42.99 Mb/sec, Read=38.09 Mb/secĮxternal G-Raid (esata): Write=134.76 Mb/sec, Read=192.32 Mb/secĮxternal Seagate hd (laptop drive, USB-2): Write=33.59 Mb/sec, Read=36.38 Mb/secĮxternal G-Raid (Firewire 800): Write=60.79 Mb/sec, Read=66.17 Mb/secĮncrypted sparsebundle image on external G-Raid above (esata): Write=68.66 Mb/sec, Read=81.33 Mb/sec Here's what I get using this method (and dividing by 1048576 to get Mb/sec): This one-liner will test the write speed, clear the cache, properly test the read speed, and then remove tstfile to reclaim disk space:ĭd if=/dev/zero bs=1024k of=tstfile count=1024 & purge & dd if=tstfile bs=1024k of=/dev/null count=1024 & rm tstfile The proper way to do the read test is to be to dd the tstfile created by the write benchmark into /dev/null (but only after clearing the RAM cache by using the 'purge' command). That's not really very fast for Thunderbolt. I bought a Factory Refurb LaCie Little Big Drive for $229 (), removed the drives and the fan, and replaced the drives with a pair of SSDs. Earlier versions of OS X handle RAM disk creation a bit differently, but it’s still possible.
#Osx menumeters mac os x
Create a RAM Disk in Mac OS X 10.4 and earlier. Using RAID0, I get around 450MB/s read and 360MB/s write speeds with every test I've tried. This has been tested and works in OS X 10.5.8, and 10.6.3, note that to remove the RAM disk you can simply eject it from the desktop as you would any other disk. It's much faster than the internal SSD in my 2011 iMac. Yes, the WD My Book is a bit slower, but it has no fan, which is a big plus. I wonder, though, if I should be getting higher speeds. …or you can just use a disk benchmarking tool like bonnie, which is available to be installed from MacPorts. Time dd if=/dev/zero bs=1024k of=tstfile count=1024 2>&1 | grep sec | awk ''Īaaah much more like it. One more thing to add and I don't know if was already mentioned or not tl:dr - this is a sequential test only. iow - this is as fast as it gets and in no way indicative of how your drive performs when ~30-50% of its reads and writes are random - i.e. ioMeter is the best open source benchmarker out there however they don't fully support OSX, just the worker engine binaries - so iometer itself would have to run on a separate machine.ĭuring regular multi application usage of the OS.
#Osx menumeters how to
Would anyone be able to tell me how to use these commands to test my USB 3.0 drives or Thunderbolt drives?Ī customer wants a new server to dedicate to its latest high-transaction Web app. MenuMeters is a nifty little preference pane that allows for showing a number of live stats (CPU, memory, disk, and network monitoring etc) within the OS X menubar. Shows the native macOS OSDs.Traffic on the current site is heavy and is expected to double in a year. So, to help reduce the likelihood of this scenario happening again, I Googled for OS X CPU monitor menubar and found MenuMeters. Use Apple Keyboard keys or custom shortcuts. ? Control your display's brightness & volume on your Mac as if it was a native Apple Display. Includes 300+ optional plugins (rails, git, macOS, hub, docker, homebrew, node, php, python, etc), 140+ themes to spice up your morning, and an auto-update tool so that makes it easy to keep up with the latest updates from the community.
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? A delightful community-driven (with 2,000+ contributors) framework for managing your zsh configuration.
#Osx menumeters for mac os x
iTerm2 is a terminal emulator for Mac OS X that does amazing things. Patched SmallTree kext for I211-AT support While you are multitasking you are instantly alerted to issues in uploading, memory leaks and paging, caches being permanently to disk, core processes or user projects getting stuck. macOS tool to limit maximum charging percentage MenuMeters is a superb tool for those who use their computers heavily. ? The missing package manager for macOS (or Linux) Application for monitoring hardware health in macOS Karabiner-Elements is a powerful utility for keyboard customization on macOS Sierra (10.12) or later.
#Osx menumeters driver
Android USB tethering driver for Mac OS X ?️ macOS status monitoring app written in SwiftUI. See all system information at a glance in the menu bar. When comparing stats and MenuMeters you can also consider the following projects: MenuMeters 1.4 Beta for Mac OS X MenuMeters is a set of CPU, memory, disk, and network monitoring tools for MacOS X.