mtd: Import libmtd with modifications to make it compile

[fio.git] / HOWTO

diff --git a/HOWTO b/HOWTO
index f43f3ec34748e369350f00e9ea2b2b17250c1cd6..6c7abcc7979d275a0bea276fd09deae69a587fec 100644 (file)
--- a/HOWTO
+++ b/HOWTO
@@ -460,6 +460,10 @@ fadvise_hint=bool By default, fio will use fadvise() to advise the kernel
                If set, fio will use POSIX_FADV_SEQUENTIAL for sequential
                IO and POSIX_FADV_RANDOM for random IO.
 
+fadvise_stream=int Notify the kernel what write stream ID to place these
+               writes under. Only supported on Linux. Note, this option
+               may change going forward.
+
 size=int       The total size of file io for this job. Fio will run until
                this many bytes has been transferred, unless runtime is
                limited by other options (such as 'runtime', for instance,
@@ -1464,6 +1468,11 @@ log_store_compressed=bool        If set, and log_compression is also set,
                command line parameter. The files will be stored with a
                .fz suffix.
 
+block_error_percentiles=bool   If set, record errors in trim block-sized
+               units from writes and trims and output a histogram of
+               how many trims it took to get to errors, and what kind
+               of error was encountered.
+
 lockmem=int    Pin down the specified amount of memory with mlock(2). Can
                potentially be used instead of removing memory or booting
                with less memory to simulate a smaller amount of memory.
@@ -1503,13 +1512,13 @@ clat_percentiles=bool Enable the reporting of percentiles of
                 completion latencies.
 
 percentile_list=float_list Overwrite the default list of percentiles
-               for completion latencies. Each number is a floating
-               number in the range (0,100], and the maximum length of
-               the list is 20. Use ':' to separate the numbers, and
-               list the numbers in ascending order. For example,
-               --percentile_list=99.5:99.9 will cause fio to report
-               the values of completion latency below which 99.5% and
-               99.9% of the observed latencies fell, respectively.
+               for completion latencies and the block error histogram.
+               Each number is a floating number in the range (0,100],
+               and the maximum length of the list is 20. Use ':'
+               to separate the numbers, and list the numbers in ascending
+               order. For example, --percentile_list=99.5:99.9 will cause
+               fio to report the values of completion latency below which
+               99.5% and 99.9% of the observed latencies fell, respectively.
 
 clocksource=str        Use the given clocksource as the base of timing. The
                supported options are: