Fix IOPS logging for mixed read/write workloads

[fio.git] / stat.c

diff --git a/stat.c b/stat.c
index 40e3b1bade76d576849f7b497a344f1f8653b183..a02c5829a494cf330a9394e731c0802b83b8b567 100644 (file)
--- a/stat.c
+++ b/stat.c
@@ -443,7 +443,7 @@ static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
                double p_of_agg = 100.0;
                const char *bw_str = "KB";
 
-               if (rs->agg[dir]) {
+               if (rs->agg[ddir]) {
                        p_of_agg = mean * 100 / (double) rs->agg[ddir];
                        if (p_of_agg > 100.0)
                                p_of_agg = 100.0;
@@ -1292,15 +1292,26 @@ void add_bw_sample(struct thread_data *td, enum fio_ddir ddir, unsigned int bs,
        if (spent < td->o.bw_avg_time)
                return;
 
-       rate = (td->this_io_bytes[ddir] - td->stat_io_bytes[ddir]) *
-                       1000 / spent / 1024;
-       add_stat_sample(&ts->bw_stat[ddir], rate);
+       /*
+        * Compute both read and write rates for the interval.
+        */
+       for (ddir = DDIR_READ; ddir <= DDIR_WRITE; ddir++) {
+               uint64_t delta;
+
+               delta = td->this_io_bytes[ddir] - td->stat_io_bytes[ddir];
+               if (!delta)
+                       continue; /* No entries for interval */
+
+               rate = delta * 1000 / spent / 1024;
+               add_stat_sample(&ts->bw_stat[ddir], rate);
+
+               if (td->bw_log)
+                       add_log_sample(td, td->bw_log, rate, ddir, bs);
 
-       if (td->bw_log)
-               add_log_sample(td, td->bw_log, rate, ddir, bs);
+               td->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
+       }
 
        fio_gettime(&td->bw_sample_time, NULL);
-       td->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
 }
 
 void add_iops_sample(struct thread_data *td, enum fio_ddir ddir,
@@ -1316,13 +1327,24 @@ void add_iops_sample(struct thread_data *td, enum fio_ddir ddir,
        if (spent < td->o.iops_avg_time)
                return;
 
-       iops = ((td->this_io_blocks[ddir] - td->stat_io_blocks[ddir]) * 1000) / spent;
+       /*
+        * Compute both read and write rates for the interval.
+        */
+       for (ddir = DDIR_READ; ddir <= DDIR_WRITE; ddir++) {
+               uint64_t delta;
+
+               delta = td->this_io_blocks[ddir] - td->stat_io_blocks[ddir];
+               if (!delta)
+                       continue; /* No entries for interval */
+
+               iops = (delta * 1000) / spent;
+               add_stat_sample(&ts->iops_stat[ddir], iops);
 
-       add_stat_sample(&ts->iops_stat[ddir], iops);
+               if (td->iops_log)
+                       add_log_sample(td, td->iops_log, iops, ddir, 0);
 
-       if (td->iops_log)
-               add_log_sample(td, td->iops_log, iops, ddir, 0);
+               td->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
+       }
 
        fio_gettime(&td->iops_sample_time, NULL);
-       td->stat_io_blocks[ddir] = td->this_io_blocks[ddir];
 }