Great, thank you very much, Vincent! On Fri, Feb 3, 2023 at 3:35 PM Vincent Fu <vincentfu@xxxxxxxxx> wrote: > > On 2/3/23 16:17, Jay Han wrote: > > Thank you Ankit! I captured a trace using the example config file. > > What does rw=read:-8k translate to in terms of LBA? I am seeing 4K seq > > read in reverse manner. I am not sure what that 8k implies. > > Each read is apart by 8. For example, the workload accessed LBAs > > 1540000, 1539992, 1539984, 1539976, 1539968, and so on. > > Each read requested 8 logical blocks and the sector size is 512B which > > makes up a 4K read. > > > > Can you elaborate the -8K for me please? > > > > The relevant documentation for the option in question is at the end of > this section: > > https://fio.readthedocs.io/en/latest/fio_doc.html#cmdoption-arg-readwrite > > Basically fio is subtracting 8K from the end of each IO in order to get > the next LBA to use. > > Vincent
