replace typeof with __typeof__

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index 68b6b82e3d6a7aad30a22211095eb0d6f0de1d07..d200700961c91174c1f0075eccd6a3ee0eb29ce8 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -1854,12 +1854,12 @@ I/O engine
 
                **pmemblk**
                        Read and write using filesystem DAX to a file on a filesystem
 
                **pmemblk**
                        Read and write using filesystem DAX to a file on a filesystem

-                       mounted with DAX on a persistent memory device through the NVML
+                       mounted with DAX on a persistent memory device through the PMDK

                        libpmemblk library.
 
                **dev-dax**
                        Read and write using device DAX to a persistent memory device (e.g.,
                        libpmemblk library.
 
                **dev-dax**
                        Read and write using device DAX to a persistent memory device (e.g.,

-                       /dev/dax0.0) through the NVML libpmem library.
+                       /dev/dax0.0) through the PMDK libpmem library.

 
                **external**
                        Prefix to specify loading an external I/O engine object file. Append
 
                **external**
                        Prefix to specify loading an external I/O engine object file. Append


@@ -1875,7 +1875,7 @@ I/O engine
 
                **libpmem**
                        Read and write using mmap I/O to a file on a filesystem
 
                **libpmem**
                        Read and write using mmap I/O to a file on a filesystem

-                       mounted with DAX on a persistent memory device through the NVML
+                       mounted with DAX on a persistent memory device through the PMDK

                        libpmem library.
 
 I/O engine specific parameters
                        libpmem library.
 
 I/O engine specific parameters


@@ -2346,6 +2346,14 @@ I/O replay
 
        Scale sector offsets down by this factor when replaying traces.
 
 
        Scale sector offsets down by this factor when replaying traces.
 

+.. option:: replay_skip=str
+
+       Sometimes it's useful to skip certain IO types in a replay trace.
+       This could be, for instance, eliminating the writes in the trace.
+       Or not replaying the trims/discards, if you are redirecting to
+       a device that doesn't support them. This option takes a comma
+       separated list of read, write, trim, sync.
+

 
 Threads, processes and job synchronization
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Threads, processes and job synchronization
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


@@ -2635,18 +2643,6 @@ Verification
        previously written file. If the data direction includes any form of write,
        the verify will be of the newly written data.
 
        previously written file. If the data direction includes any form of write,
        the verify will be of the newly written data.
 

-.. option:: verifysort=bool
-
-       If true, fio will sort written verify blocks when it deems it faster to read
-       them back in a sorted manner. This is often the case when overwriting an
-       existing file, since the blocks are already laid out in the file system. You
-       can ignore this option unless doing huge amounts of really fast I/O where
-       the red-black tree sorting CPU time becomes significant. Default: true.
-
-.. option:: verifysort_nr=int
-
-       Pre-load and sort verify blocks for a read workload.
-

 .. option:: verify_offset=int
 
        Swap the verification header with data somewhere else in the block before
 .. option:: verify_offset=int
 
        Swap the verification header with data somewhere else in the block before