X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=README;h=db8e6724ee7745d2c81f5ae2793ad6ebdd0f8d41;hp=e933bd55ef356a4eadebfc7bd1a9345ee094fd95;hb=2b386d2569c9078ca9790c4e6d318ec3835b8739;hpb=062c6022d41233523669188e876e913abd6c4e2e

diff --git a/README b/README
index e933bd55..db8e6724 100644
--- a/README
+++ b/README
@@ -75,6 +75,8 @@ $ fio
 	--readonly	Turn on safety read-only checks, preventing writes
 	--eta=when	When ETA estimate should be printed
 			May be "always", "never" or "auto"
+	--section=name	Only run specified section in job file
+	--alloc-size=kb	Set smalloc pool to this size in kb (def 1024)
 
 
 Any parameters following the options will be assumed to be job files,
@@ -98,11 +100,27 @@ options in fio. Currently the options are:
 	blktrace	Dump info related to blktrace setup
 	verify		Dump info related to IO verification
 	all		Enable all debug options
+	random		Dump info related to random offset generation
+	parse		Dump info related to option matching and parsing
+	diskutil	Dump info related to disk utilization updates
 	? or help	Show available debug options.
 
 You can specify as many as you want, eg --debug=file,mem will enable
 file and memory debugging.
 
+The section switch is meant to make it easier to ship a bigger job file
+instead of several smaller ones. Say you define a job file with light,
+moderate, and heavy parts. Then you can ask fio to run the given part
+only by giving it a --section=heavy command line option. The section
+option only applies to job sections, the reserved 'global' section is
+always parsed and taken into account.
+
+Fio has an internal allocator for shared memory called smalloc. It
+allocates shared structures from this pool. The pool defaults to 1024k
+in size, and can grow to 32 pools. If running large jobs with randommap
+enabled it can run out of memory, in which case the --alloc-size switch
+is handy for starting with a larger pool size.
+
 
 Job file
 --------