Cleanup the percentile output formatting

[fio.git] / stat.c

diff --git a/stat.c b/stat.c
index 62eee9ab8736714d5518520c6995d3910c9169cb..8bcd566e0b93c6b162b3ed0020f3ecaead4e18ea 100644 (file)
--- a/stat.c
+++ b/stat.c
@@ -182,11 +182,12 @@ static unsigned int calc_clat_percentiles(unsigned int *io_u_plat,
  * Find and display the p-th percentile of clat
  */
 static void show_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
-                                 fio_fp64_t *plist)
+                                 fio_fp64_t *plist, uint64_t precision)
 {
        unsigned int len, j = 0, minv, maxv;
        unsigned int *ovals;
        int is_last, scale_down;
+       char buf[32];
 
        len = calc_clat_percentiles(io_u_plat, nr, plist, &ovals, &maxv, &minv);
        if (!len)
@@ -204,8 +205,10 @@ static void show_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
                log_info("    clat percentiles (usec):\n     |");
        }
 
+       snprintf(buf, sizeof(buf), "%%1.%luf", precision);
+
        for (j = 0; j < len; j++) {
-               char fbuf[8];
+               char fbuf[16], *ptr = fbuf;
 
                /* for formatting */
                if (j != 0 && (j % 4) == 0)
@@ -215,9 +218,9 @@ static void show_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
                is_last = (j == len - 1);
 
                if (plist[j].u.f < 10.0)
-                       sprintf(fbuf, " %2.2f", plist[j].u.f);
-               else
-                       sprintf(fbuf, "%2.2f", plist[j].u.f);
+                       ptr += sprintf(fbuf, " ");
+
+               snprintf(ptr, sizeof(fbuf), buf, plist[j].u.f);
 
                if (scale_down)
                        ovals[j] = (ovals[j] + 999) / 1000;
@@ -440,7 +443,8 @@ static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
        if (ts->clat_percentiles) {
                show_clat_percentiles(ts->io_u_plat[ddir],
                                        ts->clat_stat[ddir].samples,
-                                       ts->percentile_list);
+                                       ts->percentile_list,
+                                       ts->percentile_precision);
        }
        if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
                double p_of_agg = 100.0;
@@ -655,7 +659,7 @@ static void show_ddir_status_terse(struct thread_stat *ts,
                        log_info(";0%%=0");
                        continue;
                }
-               log_info(";%2.2f%%=%u", ts->percentile_list[i].u.f, ovals[i]);
+               log_info(";%f%%=%u", ts->percentile_list[i].u.f, ovals[i]);
        }
 
        if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev))
@@ -753,7 +757,7 @@ static void add_ddir_status_json(struct thread_stat *ts,
                        json_object_add_value_int(percentile_object, "0.00", 0);
                        continue;
                }
-               snprintf(buf, sizeof(buf), "%2.2f", ts->percentile_list[i].u.f);
+               snprintf(buf, sizeof(buf), "%f", ts->percentile_list[i].u.f);
                json_object_add_value_int(percentile_object, (const char *)buf, ovals[i]);
        }
 
@@ -1210,10 +1214,8 @@ void show_run_stats(void)
                ts = &threadstats[j];
 
                ts->clat_percentiles = td->o.clat_percentiles;
-               if (td->o.overwrite_plist)
-                       memcpy(ts->percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
-               else
-                       memcpy(ts->percentile_list, def_percentile_list, sizeof(def_percentile_list));
+               ts->percentile_precision = td->o.percentile_precision;
+               memcpy(ts->percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
 
                idx++;
                ts->members++;