I therefore conclude that, whatever Stibium is measuring is closely correlated with generally-accepted performance of a range of SSD media. Again, these are of the order which I have come to expect from other benchmark apps. My Samsung X5 500 GB SSD running over Thunderbolt 3 delivered value for money, with a read speed of 2.1 GB/s on the T2, and write speeds of 2.3 GB/s (T2) and 2.1 GB/s (M1). Putting the same class SSD into an OWC ThunderBay 4 TB3 enclosure improved performance on the T2 iMac Pro, with a read of 569 MB/s, and writing at 539 MB/s. The M1, though, wrote at 392 MB/s (I don’t have a reliable read speed for the M1, though). The T2 read at 476 MB/s and wrote at 511 MB/s, which is of the order I had expected. When accessing an external SATA 6.0 Gb/s SSD over USB-C, the M1 was significantly slower when writing. The T2 read at 2.1 GB/s, against the M1’s 3.5 GB/s, and the T2 wrote at 2.7 GB/s against the M1’s 3.4 GB/s.
#Tmpdisk for mac mac#
On my T2-equipped iMac Pro, internal SSD performance on 1 GB files was consistently good, but slower than on my M1 Mac mini. I therefore set out to measure single read and write transfer rates on 1 GB files on a range of different storage types I have to hand.
#Tmpdisk for mac code#
Included within that is the Swift code which I am using to perform read and write tests.Īlthough benchmarks for internal SSD storage in different Macs may be a matter of discussion, there’s good consensus on the performance of external storage.
There is an important point when using Mach ‘ticks’ which can get you into trouble if you don’t apply the correct timebase scaling to convert from Mach ticks to time units: on Intel processors, the scaling is 1 so is often ignored, but that’s very different when running native on an ARM processor.Īnyone wanting to try out Stibium should also welcome the fact that this new beta has a simple styled text Help page now.
#Tmpdisk for mac download#
No, you can’t get it back. I usually just re-download things from the source online again and again, so I basically never need things I download more than once anyway.Encouraged by my initial results from a very early beta-test version of my utility to measure the performance of storage systems, Stibium, I have been progressing its development and looking at whether its results make sense.īeta 3 now uses Mach absolute time rather than the system clock, so it should be more accurate in measuring smaller time differences. If you download something you need to access again and that you don’t want deleted, move it immediately or save it somewhere else instead of the TMP folder. I can’t state enough that the TMP folder will automatically delete what’s in it. Something like /private/tmp should should up in the ‘Download location’ box.
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