This will give you an idea of whether or not your hardware is heading out the door or not.

If you suspect that your Mac’s CPU or cooling fans might be failing, putting it through a quick stress test to see whether or not your hardware is performing as expected may not be a bad idea. In this tutorial, we’ll show you how to stress test your Mac using Terminal so you can ensure all your processor’s cores are working up to snuff and your cooling fans aren’t grinding or failing to cool your Mac as they should. 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.As rare as it may be, your processor or CPU cooling fans can fail, and there is a really easy way to test your Mac’s hardware with the Terminal app that comes with macOS to ensure everything is working right. during regular multi application usage of the OS. 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. One more thing to add and I don't know if was already mentioned or not tl:dr - this is a sequential test only. ~> time dd if=/dev/zero bs=2048k of=tstfile count=1024 2>&1 | awk '/sec/ 'Īaaah much more like it. The system has 16GB of ram, a 3.5 GHz i7 and 512 GB PCI-e (]> 01:19:24 Allow me to demo this on my snazzy new iMac with the PCI-e drive.

This prevents caching and artificially inflated read speeds. One additional thing that might be worth mentioning.your test file (tstfile) should be larger than the amount of physical ram.

Mac cpu speed tests