X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=README;h=ea8f5ef8e22c47462abafae9faf53e03509bc24f;hp=cf48c018d66f45c4271020dc66b572254d6f468f;hb=391ba6ac169ad7deaf3bb3840046581f45d755e1;hpb=811a0d06b302bc84b6097d5c2e1d6725420ee73f

diff --git a/README b/README
index cf48c018..ea8f5ef8 100644
--- a/README
+++ b/README
@@ -57,6 +57,19 @@ $ make -f Makefile.Freebsd && make -f Makefile.FreeBSD install
 Likewise with OpenSolaris, use the Makefile.solaris to compile there.
 This might change in the future if I opt for an autoconf type setup.
 
+If your compile fails with an error like this:
+
+    CC gettime.o
+In file included from fio.h:23,
+                 from gettime.c:8:
+os/os.h:15:20: error: libaio.h: No such file or directory
+In file included from gettime.c:8:
+fio.h:119: error: field 'iocb' has incomplete type
+make: *** [gettime.o] Error 1
+
+Check that you have the libaio development package installed. On RPM
+based distros, it's typically called libaio-devel.
+
 
 Command line
 ------------
@@ -76,6 +89,7 @@ $ fio
 	--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,
@@ -100,6 +114,8 @@ options in fio. Currently the options are:
 	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
@@ -112,6 +128,12 @@ 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
 --------