Optimize the code that copies strings

[fio.git] / eta.c

diff --git a/eta.c b/eta.c
index 970a67dfd0ac8d6672758b99d528f32526f26e4e..647a1bdd8eed7433c2413fde356844720b45e722 100644 (file)
--- a/eta.c
+++ b/eta.c
@@ -177,12 +177,27 @@ static unsigned long thread_eta(struct thread_data *td)
                bytes_total = td->fill_device_size;
        }
 
-       if (td->o.zone_size && td->o.zone_skip && bytes_total) {
+       /*
+        * If io_size is set, bytes_total is an exact value that does not need
+        * adjustment.
+        */
+       if (td->o.zone_size && td->o.zone_skip && bytes_total &&
+           !fio_option_is_set(&td->o, io_size)) {
                unsigned int nr_zones;
                uint64_t zone_bytes;
 
-               zone_bytes = bytes_total + td->o.zone_size + td->o.zone_skip;
-               nr_zones = (zone_bytes - 1) / (td->o.zone_size + td->o.zone_skip);
+               /*
+                * Calculate the upper bound of the number of zones that will
+                * be processed, including skipped bytes between zones. If this
+                * is larger than total_io_size (e.g. when --io_size or --size
+                * specify a small value), use the lower bound to avoid
+                * adjustments to a negative value that would result in a very
+                * large bytes_total and an incorrect eta.
+                */
+               zone_bytes = td->o.zone_size + td->o.zone_skip;
+               nr_zones = (bytes_total + zone_bytes - 1) / zone_bytes;
+               if (bytes_total < nr_zones * td->o.zone_skip)
+                       nr_zones = bytes_total / zone_bytes;
                bytes_total -= nr_zones * td->o.zone_skip;
        }
 
@@ -377,6 +392,9 @@ bool calc_thread_status(struct jobs_eta *je, int force)
        static unsigned long long disp_io_iops[DDIR_RWDIR_CNT];
        static struct timespec rate_prev_time, disp_prev_time;
 
+       void *je_rate = (void *) je->rate;
+       void *je_iops = (void *) je->iops;
+
        if (!force) {
                if (!(output_format & FIO_OUTPUT_NORMAL) &&
                    f_out == stdout)
@@ -492,7 +510,7 @@ bool calc_thread_status(struct jobs_eta *je, int force)
 
        if (write_bw_log && rate_time > bw_avg_time && !in_ramp_time(td)) {
                calc_rate(unified_rw_rep, rate_time, io_bytes, rate_io_bytes,
-                               je->rate);
+                               je_rate);
                memcpy(&rate_prev_time, &now, sizeof(now));
                add_agg_sample(sample_val(je->rate[DDIR_READ]), DDIR_READ, 0);
                add_agg_sample(sample_val(je->rate[DDIR_WRITE]), DDIR_WRITE, 0);
@@ -504,8 +522,8 @@ bool calc_thread_status(struct jobs_eta *je, int force)
        if (!force && !eta_time_within_slack(disp_time))
                return false;
 
-       calc_rate(unified_rw_rep, disp_time, io_bytes, disp_io_bytes, je->rate);
-       calc_iops(unified_rw_rep, disp_time, io_iops, disp_io_iops, je->iops);
+       calc_rate(unified_rw_rep, disp_time, io_bytes, disp_io_bytes, je_rate);
+       calc_iops(unified_rw_rep, disp_time, io_iops, disp_io_iops, je_iops);
 
        memcpy(&disp_prev_time, &now, sizeof(now));