clock: turn expensive division into multiply + cheap division

[fio.git] / README

diff --git a/README b/README
index a13501708c081baaed0b8b3e2478802afabc3992..7c4552d98bad1692abaea0d2ab8a726d369cbbb5 100644 (file)
--- a/README
+++ b/README
@@ -125,9 +125,11 @@ $ fio
        --latency-log           Generate per-job latency logs
        --bandwidth-log         Generate per-job bandwidth logs
        --minimal               Minimal (terse) output
-       --version               Print version info and exit
+       --output-format=type    Output format (terse,json,normal)
        --terse-version=type    Terse version output format (default 3, or 2 or 4).
+       --version               Print version info and exit
        --help                  Print this page
+       --cpuclock-test         Perform test/validation of CPU clock
        --cmdhelp=cmd           Print command help, "all" for all of them
        --enghelp=engine        Print ioengine help, or list available ioengines
        --enghelp=engine,cmd    Print help for an ioengine cmd
@@ -232,10 +234,11 @@ The job file parameters are:
                        readv/writev (with queuing emulation) mmap for mmap'ed
                        io, syslet-rw for syslet driven read/write, splice for
                        using splice/vmsplice, sg for direct SG_IO io, net
-                       for network io, or cpuio for a cycler burner load. sg
-                       only works on Linux on SCSI (or SCSI-like devices, such
-                       as usb-storage or sata/libata driven) devices. Fio also
-                       has a null io engine, which is mainly used for testing
+                       for network io, rdma for RDMA io, or cpuio for a
+                       cycler burner load. sg only works on Linux on
+                       SCSI (or SCSI-like devices, such as usb-storage or
+                       sata/libata driven) devices. Fio also has a null
+                       io engine, which is mainly used for testing
                        fio itself.
 
        iodepth=x       For async io, allow 'x' ios in flight
@@ -254,6 +257,11 @@ The job file parameters are:
        ratecycle=x     ratemin averaged over x msecs
        cpumask=x       Only allow job to run on CPUs defined by mask.
        cpus_allowed=x  Like 'cpumask', but allow text setting of CPU affinity.
+       numa_cpu_nodes=x,y-z  Allow job to run on specified NUMA nodes' CPU.
+       numa_mem_policy=m:x,y-z  Setup numa memory allocation policy.
+                       'm' stands for policy, such as local, interleave,
+                       bind, prefer, local. 'x, y-z' are numa node(s) for
+                       memory allocation according to policy.
        fsync=x         If writing with buffered IO, fsync after every
                        'x' blocks have been written.
        end_fsync=x     If 'x', run fsync() after end-of-job.