Implement nice() for Windows

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index d4b23c897fb188a99f4794e63769b50ef109b81a..cf1024cff4dbb2a7f8ee888cae6d21d511b5096d 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -1066,6 +1066,10 @@ random_generator=str     Fio supports the following engines for generating
 
 nice=int       Run the job with the given nice value. See man nice(2).
 
+     On Windows, values less than -15 set the process class to "High";
+     -1 through -15 set "Above Normal"; 1 through 15 "Below Normal";
+     and above 15 "Idle" priority class.
+
 prio=int       Set the io priority value of this job. Linux limits us to
                a positive value between 0 and 7, with 0 being the highest.
                See man ionice(1). Refer to an appropriate manpage for
@@ -1175,7 +1179,7 @@ cpus_allowed_policy=str Set the policy of how fio distributes the CPUs
                one cpu per job. If not enough CPUs are given for the jobs
                listed, then fio will roundrobin the CPUs in the set.
 
-numa_cpu_nodes=str Set this job running on spcified NUMA nodes' CPUs. The
+numa_cpu_nodes=str Set this job running on specified NUMA nodes' CPUs. The
                arguments allow comma delimited list of cpu numbers,
                A-B ranges, or 'all'. Note, to enable numa options support,
                fio must be built on a system with libnuma-dev(el) installed.
@@ -1295,7 +1299,7 @@ iopsavgtime=int   Average the calculated IOPS over the given time. Value
                through 'write_iops_log', then the minimum of this option and
                'log_avg_msec' will be used.  Default: 500ms.
 
-create_serialize=bool  If true, serialize the file creating for the jobs.
+create_serialize=bool  If true, serialize the file creation for the jobs.
                        This may be handy to avoid interleaving of data
                        files, which may greatly depend on the filesystem
                        used and even the number of processors in the system.
@@ -1334,6 +1338,8 @@ unlink=bool       Unlink the job files when done. Not the default, as repeated
                runs of that job would then waste time recreating the file
                set again and again.
 
+unlink_each_loop=bool  Unlink job files after each iteration or loop.
+
 loops=int      Run the specified number of iterations of this job. Used
                to repeat the same workload a given number of times. Defaults
                to 1.
@@ -1606,7 +1612,7 @@ write_lat_log=str Same as write_bw_log, except that this option stores io
                The actual log names will be foo_slat.x.log, foo_clat.x.log,
                and foo_lat.x.log, where x is the index of the job (1..N,
                where N is the number of jobs). This helps fio_generate_plot
-               fine the logs automatically. If 'per_job_logs' is false, then
+               find the logs automatically. If 'per_job_logs' is false, then
                the filename will not include the job index. See 'Log File
                Formats'.
 
@@ -1679,6 +1685,10 @@ log_store_compressed=bool        If set, fio will store the log files in a
                the --inflate-log command line parameter. The files will be
                stored with a .fz suffix.
 
+log_unix_epoch=bool    If set, fio will log Unix timestamps to the log
+               files produced by enabling write_type_log for each log type, instead
+               of the default zero-based timestamps.
+
 block_error_percentiles=bool   If set, record errors in trim block-sized
                units from writes and trims and output a histogram of
                how many trims it took to get to errors, and what kind
@@ -1949,7 +1959,7 @@ be the starting port number since fio will use a range of ports.
 [mtd] skip_bad=bool    Skip operations against known bad blocks.
 
 [libhdfs] hdfsdirectory        libhdfs will create chunk in this HDFS directory
-[libhdfs] chunck_size  the size of the chunck to use for each file.
+[libhdfs] chunk_size   the size of the chunk to use for each file.
 
 
 6.0 Interpreting the output