This commit / feature adds completion latency histogram output to fio, piggybacking

[fio.git] / options.c

diff --git a/options.c b/options.c
index 4c56dbe1f11767484190efa3148e48954771c901..56d3e2b6027e3aa5215a48a0af078902308a2c30 100644 (file)
--- a/options.c
+++ b/options.c
@@ -3529,6 +3529,37 @@ struct fio_option fio_options[FIO_MAX_OPTS] = {
                .category = FIO_OPT_C_LOG,
                .group  = FIO_OPT_G_INVALID,
        },
+       {
+               .name   = "log_hist_msec",
+               .lname  = "Log histograms (msec)",
+               .type   = FIO_OPT_INT,
+               .off1   = td_var_offset(log_hist_msec),
+               .help   = "Dump completion latency histograms at frequency of this time value",
+               .def    = "0",
+               .category = FIO_OPT_C_LOG,
+               .group  = FIO_OPT_G_INVALID,
+       },
+       {
+               .name   = "log_hist_coarseness",
+               .lname  = "Histogram logs coarseness",
+               .type   = FIO_OPT_INT,
+               .off1   = td_var_offset(log_hist_coarseness),
+               .help   = "Integer in range [0,6]. Higher coarseness outputs"
+                       " fewer histogram bins per sample. The number of bins for"
+                       " these are [1216, 608, 304, 152, 76, 38, 19] respectively.",
+               .def    = "0",
+               .category = FIO_OPT_C_LOG,
+               .group  = FIO_OPT_G_INVALID,
+       },
+       {
+               .name   = "write_hist_log",
+               .lname  = "Write latency histogram logs",
+               .type   = FIO_OPT_STR_STORE,
+               .off1   = td_var_offset(hist_log_file),
+               .help   = "Write log of latency histograms during run",
+               .category = FIO_OPT_C_LOG,
+               .group  = FIO_OPT_G_INVALID,
+       },
        {
                .name   = "log_max_value",
                .lname  = "Log maximum instead of average",