X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=fio.1;h=f4a3293ad3aaf63c6c2f3a82966ab92a739b5627;hb=b22989b9f9349b3c1d1c41846ab27ff0914bd6de;hp=aa7b9d6767ed9a0136a2282c133878383356d143;hpb=d529ee1932bc85598900a3ef62f01293af87fbd8;p=fio.git

diff --git a/fio.1 b/fio.1
index aa7b9d67..f4a3293a 100644
--- a/fio.1
+++ b/fio.1
@@ -523,7 +523,7 @@ sum of the \fBiomem_align\fR and \fBbs\fR used.
 .TP
 .BI hugepage\-size \fR=\fPint
 Defines the size of a huge page.  Must be at least equal to the system setting.
-Should be a multiple of 1MiB. Default: 4MiB.
+Should be a multiple of 1MB. Default: 4MB.
 .TP
 .B exitall
 Terminate all jobs when one finishes.  Default: wait for each job to finish.
@@ -544,7 +544,9 @@ If true, the files are not created until they are opened for IO by the job.
 .BI pre_read \fR=\fPbool
 If this is given, files will be pre-read into memory before starting the given
 IO operation. This will also clear the \fR \fBinvalidate\fR flag, since it is
-pointless to pre-read and then drop the cache.
+pointless to pre-read and then drop the cache. This will only work for IO
+engines that are seekable, since they allow you to read the same data
+multiple times. Thus it will not work on eg network or splice IO.
 .TP
 .BI unlink \fR=\fPbool
 Unlink job files when done.  Default: false.
@@ -596,6 +598,18 @@ Write the verification header for this number of bytes, which should divide
 If true, exit the job on the first observed verification failure.  Default:
 false.
 .TP
+.BI verify_async \fR=\fPint
+Fio will normally verify IO inline from the submitting thread. This option
+takes an integer describing how many async offload threads to create for IO
+verification instead, causing fio to offload the duty of verifying IO contents
+to one or more separate threads.  If using this offload option, even sync IO
+engines can benefit from using an \fBiodepth\fR setting higher than 1, as it
+allows them to have IO in flight while verifies are running.
+.TP
+.BI verify_async_cpus \fR=\fPstr
+Tell fio to set the given CPU affinity on the async IO verification threads.
+See \fBcpus_allowed\fP for the format used.
+.TP
 .B stonewall
 Wait for preceeding jobs in the job file to exit before starting this one.
 \fBstonewall\fR implies \fBnew_group\fR.
@@ -857,7 +871,7 @@ semicolon-delimited format suitable for scripted use.  The fields are:
 .P
 Read status:
 .RS
-.B KiB I/O, bandwidth \fR(KiB/s)\fP, runtime \fR(ms)\fP
+.B KB I/O, bandwidth \fR(KB/s)\fP, runtime \fR(ms)\fP
 .P
 Submission latency:
 .RS
@@ -875,7 +889,7 @@ Bandwidth:
 .P
 Write status:
 .RS
-.B KiB I/O, bandwidth \fR(KiB/s)\fP, runtime \fR(ms)\fP
+.B KB I/O, bandwidth \fR(KB/s)\fP, runtime \fR(ms)\fP
 .P
 Submission latency:
 .RS