| | 1 | [global] |
| | 2 | bs=1m |
| | 3 | ioengine=pmemblk |
| | 4 | norandommap |
| | 5 | time_based=1 |
| | 6 | runtime=30 |
| | 7 | group_reporting |
| | 8 | disable_lat=1 |
| | 9 | disable_slat=1 |
| | 10 | disable_clat=1 |
| | 11 | clat_percentiles=0 |
| | 12 | cpus_allowed_policy=split |
| | 13 | |
| | 14 | # For the pmemblk engine: |
| | 15 | # |
| | 16 | # IOs always complete immediately |
| | 17 | # IOs are always direct |
| | 18 | # Must use threads |
| | 19 | # |
| | 20 | iodepth=1 |
| | 21 | direct=1 |
| | 22 | thread=1 |
| | 23 | numjobs=16 |
| | 24 | # |
| | 25 | # Unlink can be used to remove the files when done, but if you are |
| | 26 | # using serial runs with stonewall, and you want the files to be created |
| | 27 | # only once and unlinked only at the very end, then put the unlink=1 |
| | 28 | # in the last group. This is the method demonstrated here. |
| | 29 | # |
| | 30 | # Note that if you have a read-only group and if the files will be |
| | 31 | # newly created, then all of the data will read back as zero and the |
| | 32 | # read will be optimized, yielding performance that is different from |
| | 33 | # that of reading non-zero blocks (or unoptimized zero blocks). |
| | 34 | # |
| | 35 | unlink=0 |
| | 36 | # |
| | 37 | # The pmemblk engine does IO to files in a DAX-mounted filesystem. |
| | 38 | # The filesystem should be created on an NVDIMM (e.g /dev/pmem0) |
| | 39 | # and then mounted with the '-o dax' option. Note that the engine |
| | 40 | # accesses the underlying NVDIMM directly, bypassing the kernel block |
| | 41 | # layer, so the usual filesystem/disk performance monitoring tools such |
| | 42 | # as iostat will not provide useful data. |
| | 43 | # |
| | 44 | # Here we specify a test file on each of two NVDIMMs. The first |
| | 45 | # number after the file name is the block size in bytes (4096 bytes |
| | 46 | # in this example). The second number is the size of the file to |
| | 47 | # create in MiB (1 GiB in this example); note that the actual usable |
| | 48 | # space available to fio will be less than this as libpmemblk requires |
| | 49 | # some space for metadata. |
| | 50 | # |
| | 51 | # Currently, the minimum block size is 512 bytes and the minimum file |
| | 52 | # size is about 17 MiB (these are libpmemblk requirements). |
| | 53 | # |
| | 54 | # While both files in this example have the same block size and file |
| | 55 | # size, this is not required. |
| | 56 | # |
| | 57 | filename=/pmem0/fio-test,4096,1024 |
| | 58 | filename=/pmem1/fio-test,4096,1024 |
| | 59 | |
| | 60 | [pmemblk-write] |
| | 61 | rw=randwrite |
| | 62 | stonewall |
| | 63 | |
| | 64 | [pmemblk-read] |
| | 65 | rw=randread |
| | 66 | stonewall |
| | 67 | # |
| | 68 | # We're done, so unlink the file: |
| | 69 | # |
| | 70 | unlink=1 |
| | 71 | |
projects / fio.git / blame_incremental