Add 'sequential' file_service_type

[fio.git] / io_u.c

diff --git a/io_u.c b/io_u.c
index 08969427dd41b3753058b831987492e845ac27f5..0d55c09ae59dd2c70ea60313dff4bc1ddfef29a6 100644 (file)
--- a/io_u.c
+++ b/io_u.c
@@ -681,10 +681,15 @@ static struct fio_file *get_next_file(struct thread_data *td)
        }
 
        f = td->file_service_file;
-       if (f && (f->flags & FIO_FILE_OPEN) && td->file_service_left--)
-               goto out;
+       if (f && (f->flags & FIO_FILE_OPEN)) {
+               if (td->o.file_service_type == FIO_FSERVICE_SEQ)
+                       goto out;
+               if (td->file_service_left--)
+                       goto out;
+       }
 
-       if (td->o.file_service_type == FIO_FSERVICE_RR)
+       if (td->o.file_service_type == FIO_FSERVICE_RR ||
+           td->o.file_service_type == FIO_FSERVICE_SEQ)
                f = get_next_file_rr(td, FIO_FILE_OPEN, FIO_FILE_CLOSING);
        else
                f = get_next_file_rand(td, FIO_FILE_OPEN, FIO_FILE_CLOSING);
@@ -851,7 +856,8 @@ struct io_u *get_io_u(struct thread_data *td)
 
 out:
        if (!td_io_prep(td, io_u)) {
-               fio_gettime(&io_u->start_time, NULL);
+               if (!td->o.disable_slat)
+                       fio_gettime(&io_u->start_time, NULL);
                return io_u;
        }
 err_put:
@@ -881,7 +887,11 @@ void io_u_log_error(struct thread_data *td, struct io_u *io_u)
 static void io_completed(struct thread_data *td, struct io_u *io_u,
                         struct io_completion_data *icd)
 {
-       unsigned long usec;
+       /*
+        * Older gcc's are too dumb to realize that usec is always used
+        * initialized, silence that warning.
+        */
+       unsigned long uninitialized_var(usec);
 
        dprint_io_u(io_u, "io complete");
 
@@ -905,11 +915,16 @@ static void io_completed(struct thread_data *td, struct io_u *io_u,
                td->this_io_bytes[idx] += bytes;
 
                if (ramp_time_over(td)) {
-                       usec = utime_since(&io_u->issue_time, &icd->time);
+                       if (!td->o.disable_clat || !td->o.disable_bw)
+                               usec = utime_since(&io_u->issue_time,
+                                                       &icd->time);
 
-                       add_clat_sample(td, idx, usec);
-                       add_bw_sample(td, idx, &icd->time);
-                       io_u_mark_latency(td, usec);
+                       if (!td->o.disable_clat) {
+                               add_clat_sample(td, idx, usec);
+                               io_u_mark_latency(td, usec);
+                       }
+                       if (!td->o.disable_bw)
+                               add_bw_sample(td, idx, &icd->time);
                }
 
                if (td_write(td) && idx == DDIR_WRITE &&
@@ -930,9 +945,11 @@ static void io_completed(struct thread_data *td, struct io_u *io_u,
        }
 }
 
-static void init_icd(struct io_completion_data *icd, int nr)
+static void init_icd(struct thread_data *td, struct io_completion_data *icd,
+                    int nr)
 {
-       fio_gettime(&icd->time, NULL);
+       if (!td->o.disable_clat || !td->o.disable_bw)
+               fio_gettime(&icd->time, NULL);
 
        icd->nr = nr;
 
@@ -961,7 +978,7 @@ long io_u_sync_complete(struct thread_data *td, struct io_u *io_u)
 {
        struct io_completion_data icd;
 
-       init_icd(&icd, 1);
+       init_icd(td, &icd, 1);
        io_completed(td, io_u, &icd);
        put_io_u(td, io_u);
 
@@ -994,7 +1011,7 @@ long io_u_queued_complete(struct thread_data *td, int min_evts)
        } else if (!ret)
                return ret;
 
-       init_icd(&icd, ret);
+       init_icd(td, &icd, ret);
        ios_completed(td, &icd);
        if (!icd.error)
                return icd.bytes_done[0] + icd.bytes_done[1];
@@ -1008,10 +1025,12 @@ long io_u_queued_complete(struct thread_data *td, int min_evts)
  */
 void io_u_queued(struct thread_data *td, struct io_u *io_u)
 {
-       unsigned long slat_time;
+       if (!td->o.disable_slat) {
+               unsigned long slat_time;
 
-       slat_time = utime_since(&io_u->start_time, &io_u->issue_time);
-       add_slat_sample(td, io_u->ddir, slat_time);
+               slat_time = utime_since(&io_u->start_time, &io_u->issue_time);
+               add_slat_sample(td, io_u->ddir, slat_time);
+       }
 }
 
 /*