engine: pass in right protocol family on host lookup

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 250bc582f548640a92087a6d2119962d5f63d81e..e69cf4130696c55bf0af6cc3f224d6136af5666b 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -384,6 +384,11 @@ unified_rw_reporting=bool  Fio normally reports statistics on a per
 randrepeat=bool        For random IO workloads, seed the generator in a predictable
                way so that results are repeatable across repetitions.
 
+randseed=int   Seed the random number generators based on this seed value, to
+               be able to control what sequence of output is being generated.
+               If not set, the random sequence depends on the randrepeat
+               setting.
+
 use_os_rand=bool Fio can either use the random generator supplied by the OS
                to generator random offsets, or it can use it's own internal
                generator (based on Tausworthe). Default is to use the
@@ -542,6 +547,11 @@ buffer_compress_chunk=int  See buffer_compress_percentage. This
                alternate random and zeroed data throughout the IO
                buffer.
 
+buffer_pattern=str     If set, fio will fill the io buffers with this pattern.
+               If not set, the contents of io buffers is defined by the other
+               options related to buffer contents. The setting can be any
+               pattern of bytes, and can be prefixed with 0x for hex values.
+
 nrfiles=int    Number of files to use for this job. Defaults to 1.
 
 openfiles=int  Number of files to keep open at the same time. Defaults to
@@ -881,6 +891,20 @@ rate_iops_min=int If fio doesn't meet this rate of IO, it will cause
                the job to exit. The same format as rate is used for read vs
                write separation.
 
+latency_target=int     If set, fio will attempt to find the max performance
+               point that the given workload will run at while maintaining a
+               latency below this target. The values is given in microseconds.
+               See latency_window and latency_percentile
+
+latency_window=int     Used with latency_target to specify the sample window
+               that the job is run at varying queue depths to test the
+               performance. The value is given in microseconds.
+
+latency_percentile=float       The percentage of IOs that must fall within the
+               criteria specified by latency_target and latency_window. If not
+               set, this defaults to 100.0, meaning that all IOs must be equal
+               or below to the value set by latency_target.
+
 max_latency=int        If set, fio will exit the job if it exceeds this maximum
                latency. It will exit with an ETIME error.
 
@@ -1472,7 +1496,9 @@ that defines them is selected.
 [net] proto=str        The network protocol to use. Accepted values are:
 
                        tcp     Transmission control protocol
+                       tcpv6   Transmission control protocol V6
                        udp     User datagram protocol
+                       udpv6   User datagram protocol V6
                        unix    UNIX domain socket
 
                When the protocol is TCP or UDP, the port must also be given,