PCPer File Copy Test
Our custom PCPer-FC test does some fairly simple file creation and copy routines in order to test the storage system for speed. The script creates a set of files of varying sizes, times the creation process, then copies the same files to another partition on the same hard drive and times the copy process as well. There are four file patterns that we used to try and find any strong or weak points in the hardware: 10 files @ 1000 MB each, 100 files @ 100 MB each, 500 files @ 10 MB each and 1000 files at 1 MB each.
Our file creation test puts the 470’s write speeds right up there with the likes of SandForce,
as well as completely dusting the older PB22-J unit.
After turning in such impressive creation numbers, the copy test results left us scratching our heads a bit.
Samsung units have always stumbled over their write cache on mixed reads + writes, but this test showed
the 470 to perform worse than the PB22-J – so slow that it was on-par with the only HDD in this test.