on what IO patterns it is likely to issue. Sometimes you
want to test specific IO patterns without telling the
kernel about it, in which case you can disable this option.
- If set, fio will use POSIX_FADV_SEQUENTIAL for sequential
- IO and POSIX_FADV_RANDOM for random IO.
+ The following options are supported:
+
+ sequential Use FADV_SEQUENTIAL
+ random Use FADV_RANDOM
+ 1 Backwards-compatible hint for basing
+ the hint on the fio workload. Will use
+ FADV_SEQUENTIAL for a sequential
+ workload, and FADV_RANDOM for a random
+ workload.
+ 0 Backwards-compatible setting for not
+ issing a fadvise hint.
fadvise_stream=int Notify the kernel what write stream ID to place these
writes under. Only supported on Linux. Note, this option
pmemblk Read and write through the NVML libpmemblk
interface.
+ dev-dax Read and write through a DAX device exposed
+ from persistent memory.
+
external Prefix to specify loading an external
IO engine object file. Append the engine
filename, eg ioengine=external:/tmp/foo.o