I know this methodology may be flawed or there may be more accurate way to test, but this is just what I came up with and seemed representative enough for troubleshooting. I was trying to test raw disk speed with the 3rd test. With the first 2 tests, I was trying to test reading and operating on many files using native utils. type f -exec md5sum Native | Docker | VirtualBox I dumped a large number of files from the app (~7.5K files, 74MB total size) as a sample set to perform operations on into a single dir, and then copied the dir to the container, and the vm. So I started simplifying the problem and the running some tests. It seems to be related to the filesystem or core utilities itself, but I'm not sure. I started narrowing down possible issues, but now I'm not sure where to go. I was attempting to profile a php application when I noticed it was running MUCH slower on my mac vs docker vs virtualbox (all on the same hardware).
