Mention cpuio never finishes without real I/O in documentation

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index ca1542d5fdf88b7fa0e6e607ab019a98c5d2d770..b9076d5e7708c8565b9ef35af304262a300972a4 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -757,7 +757,8 @@ ioengine=str        Defines how the job issues io to the file. The following
                                85% of the CPU. In case of SMP machines,
                                use numjobs=<no_of_cpu> to get desired CPU
                                usage, as the cpuload only loads a single
-                               CPU at the desired rate.
+                               CPU at the desired rate. A job never finishes
+                               unless there is at least one non-cpuio job.
 
                        guasi   The GUASI IO engine is the Generic Userspace
                                Asyncronous Syscall Interface approach