X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=fio.1;h=2db9793fac5470f840b95db192f5ed6aad8e7334;hb=51ede0b1e9c9b570b942b50b44d0455183a0d5ec;hp=c22d8b28490e6f694ed051f095c2ff6670bf5ff4;hpb=eebd2f2d8a022a248acac5685f73665aa0c6ee99;p=fio.git

diff --git a/fio.1 b/fio.1
index c22d8b28..2db9793f 100644
--- a/fio.1
+++ b/fio.1
@@ -580,6 +580,32 @@ overrides the first. This may interfere with a given rate setting, if fio is
 asked to limit reads or writes to a certain rate. If that is the case, then
 the distribution may be skewed. Default: 50.
 .TP
+.BI random_distribution \fR=\fPstr:float
+By default, fio will use a completely uniform random distribution when asked
+to perform random IO. Sometimes it is useful to skew the distribution in
+specific ways, ensuring that some parts of the data is more hot than others.
+Fio includes the following distribution models:
+.RS
+.TP
+.B random
+Uniform random distribution
+.TP
+.B zipf
+Zipf distribution
+.TP
+.B pareto
+Pareto distribution
+.TP
+.RE
+.P
+When using a zipf or pareto distribution, an input value is also needed to
+define the access pattern. For zipf, this is the zipf theta. For pareto,
+it's the pareto power. Fio includes a test program, genzipf, that can be
+used visualize what the given input values will yield in terms of hit rates.
+If you wanted to use zipf with a theta of 1.2, you would use
+random_distribution=zipf:1.2 as the option. If a non-uniform model is used,
+fio will disable use of the random map.
+.TP
 .B norandommap
 Normally \fBfio\fR will cover every block of the file when doing random I/O. If
 this parameter is given, a new offset will be chosen without looking at past
@@ -639,6 +665,10 @@ is used for read vs write seperation.
 Average bandwidth for \fBrate\fR and \fBratemin\fR over this number of
 milliseconds.  Default: 1000ms.
 .TP
+.BI max_latency \fR=\fPint
+If set, fio will exit the job if it exceeds this maximum latency. It will exit
+with an ETIME error.
+.TP
 .BI cpumask \fR=\fPint
 Set CPU affinity for this job. \fIint\fR is a bitmask of allowed CPUs the job
 may run on.  See \fBsched_setaffinity\fR\|(2).
@@ -646,6 +676,28 @@ may run on.  See \fBsched_setaffinity\fR\|(2).
 .BI cpus_allowed \fR=\fPstr
 Same as \fBcpumask\fR, but allows a comma-delimited list of CPU numbers.
 .TP
+.BI numa_cpu_nodes \fR=\fPstr
+Set this job running on spcified NUMA nodes' CPUs. The arguments allow
+comma delimited list of cpu numbers, A-B ranges, or 'all'.
+.TP
+.BI numa_mem_policy \fR=\fPstr
+Set this job's memory policy and corresponding NUMA nodes. Format of
+the argements:
+.RS
+.TP
+.B <mode>[:<nodelist>]
+.TP
+.B mode
+is one of the following memory policy:
+.TP
+.B default, prefer, bind, interleave, local
+.TP
+.RE
+For \fBdefault\fR and \fBlocal\fR memory policy, no \fBnodelist\fR is
+needed to be specified. For \fBprefer\fR, only one node is
+allowed. For \fBbind\fR and \fBinterleave\fR, \fBnodelist\fR allows
+comma delimited list of numbers, A-B ranges, or 'all'.
+.TP
 .BI startdelay \fR=\fPint
 Delay start of job for the specified number of seconds.
 .TP
@@ -971,6 +1023,23 @@ entering the kernel with a gettimeofday() call. The CPU set aside for doing
 these time calls will be excluded from other uses. Fio will manually clear it
 from the CPU mask of other jobs.
 .TP
+.BI ignore_error \fR=\fPstr
+Sometimes you want to ignore some errors during test in that case you can specify
+error list for each error type.
+.br
+ignore_error=READ_ERR_LIST,WRITE_ERR_LIST,VERIFY_ERR_LIST
+.br
+errors for given error type is separated with ':'.
+Error may be symbol ('ENOSPC', 'ENOMEM') or an integer.
+.br
+Example: ignore_error=EAGAIN,ENOSPC:122 .
+.br	
+This option will ignore EAGAIN from READ, and ENOSPC and 122(EDQUOT) from WRITE. 
+.TP
+.BI error_dump \fR=\fPbool
+If set dump every error even if it is non fatal, true by default. If disabled
+only fatal error will be dumped
+.TP
 .BI cgroup \fR=\fPstr
 Add job to this control group. If it doesn't exist, it will be created.
 The system must have a mounted cgroup blkio mount point for this to work. If
@@ -1056,7 +1125,7 @@ The network protocol to use. Accepted values are:
 Transmission control protocol
 .TP
 .B udp
-Unreliable datagram protocol
+User datagram protocol
 .TP
 .B unix
 UNIX domain socket