-t regex, --threadcount regex
- Start this many threads for each test series, specified as a comma
delimited regular expression. (eg: "-t 1,2,3")
- This option is mutually exclusive with the threadcount_*
options.
-l regex_low, --threadcount_low
regex_low
-h regex_high, --threadcount_high
regex_high
-e regex_incr, --threadcount_incr
regex_incr
- Start regex_low threads for the first test, add regex_incr
threads for each subsequent test, and start regex_high threads for
the last test.
- These three options must be specified together and are mutually exclusive
with the threadcount option.
-n regex, --regioncount regex
- Create this many regions for each test series, specified as a comma
delimited regular expression. (eg: "-n 512,4096,65536")
- This option is mutually exclusive with the regioncount_*
options.
-i regex_low, --regioncount_low
regex_low
-j regex_high, --regioncount_high
regex_high
-k regex_incr, --regioncount_incr
regex_incr
- Create regex_low regions for the first test, add regex_incr
regions for each subsequent test, and create regex_high regions for
the last test.
- These three options must be specified together and are mutually exclusive
with the regioncount option.
-o size, --offset size
- Create regions at size offset for each test series, specified as a
comma delimited regular expression with an optional unit suffix. (eg:
"-o 4M" means four megabytes.)
- This option is mutually exclusive with the offset_* options.
-m size_low, --offset_low
size_low
-q size_high, --offset_high
size_high
-r size_incr, --offset_incr
size_incr
- Create a region at size_low offset for the first test, add
size_incr to the offset for each subsequent test, and create a
region at size_high offset for the last test.
- These three options must be specified together and are mutually exclusive
with the offset option.
-c size, --chunksize size
- Use size chunks for each test, specified as a comma delimited
regular expression with an optional unit suffix. (eg: "-c 1M"
means one megabyte.) The chunk size must be at least the region size.
- This option is mutually exclusive with the chunksize_*
options.
-a size_low, --chunksize_low
size_low
-b size_high, --chunksize_high
size_high
-g size_incr, --chunksize_incr
size_incr
- Use a size_low chunk size for the first test, add size_incr
to the chunk size for each subsequent test, and use a size_high
chunk size for the last test.
- These three options must be specified together and are mutually exclusive
with the chunksize option.
-s size, --regionsize size
- Use size regions for each test, specified as a comma delimited
regular expression with an optional unit suffix. (eg: "-s 1M"
means one megabyte.)
- This option is mutually exclusive with the regionsize_*
options.
-A size_low, --regionsize_low
size_low
-B size_high, --regionsize_high
size_high
-C size_incr, --regionsize_incr
size_incr
- Use a size_low region size for the first test, add size_incr
to the region size for each subsequent test, and use a size_high
region size for the last test.
- These three options must be specified together and are mutually exclusive
with the regionsize option.
-S size | sizes, --blocksize size |
sizes
- Use size ZFS blocks for each test, specified as a comma delimited
regular expression with an optional unit suffix. (eg: "-S 1M"
means one megabyte.) The supported range is powers of two from 128K
through 16M. A range of blocks can be tested as follows: "-S
128K,256K,512K,1M".
-L dmu_flags, --load dmu_flags
- Specify dmuio for regular DMU_IO, ssf for single shared file
access, or fpp for per thread access. Use commas to delimit
multiple flags. (eg: "-L dmuio,ssf")
-p name, --pool name
- The pool name, which is mandatory.
-M test, --name test
- An arbitrary string that appears in the program output.
-x, --cleanup
- Enable the DMU_REMOVE flag.
-P command, --prerun command
- Invoke command from the kernel before running the test. Shell
expansion is not performed and the environment is set to HOME=/;
TERM=linux; PATH=/sbin:/usr/sbin:/bin:/usr/bin.
-R command, --postrun command
- Invoke command from the kernel after running the test. Shell
expansion is not performed and the environment is set to HOME=/;
TERM=linux; PATH=/sbin:/usr/sbin:/bin:/usr/bin.
-G directory, --log directory
- Put logging output in this directory.
-I size, --regionnoise size
- Randomly vary the regionsize parameter for each test modulo
size bytes.
-N size, --chunknoise size
- Randomly vary the chunksize parameter for each test modulo
size bytes.
-T time, --threaddelay time
- Randomly vary the execution time for each test modulo time kernel
jiffies.
-V, --verify
- Enable the DMU_VERIFY flag for trivial data verification.
-z, --zerocopy
- Enable the DMU_READ_ZC and DMU_WRITE_ZC flags, which are currently
unimplemented for Linux.
-O, --nowait
- Enable the DMU_WRITE_NOWAIT flag.
-f, --noprefetch
- Enable the DMU_READ_NOPF flag.
-H, --human-readable
- Print PASS and FAIL results explicitly and put unit suffixes on large
numbers.
-v, --verbose
- Increase output verbosity.
-? , --help
- Print the usage message.