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
