X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=stat.c;h=a8f2b02665b2b21f278bcef35af984dc2e61e0d0;hb=bc5b77a8c46aabea554c4a2c8cca37f27f97969a;hp=352ba48f4447cf77068b77bae7247ceec8dfa166;hpb=8abdce6686bfcaa211e7eb75a69ec07e980bd96e;p=fio.git

diff --git a/stat.c b/stat.c
index 352ba48f..a8f2b026 100644
--- a/stat.c
+++ b/stat.c
@@ -11,6 +11,7 @@
 
 static struct itimerval itimer;
 static struct list_head disk_list = LIST_HEAD_INIT(disk_list);
+static dev_t last_dev;
 
 /*
  * Cheasy number->string conversion, complete with carry rounding error.
@@ -273,6 +274,17 @@ void init_disk_util(struct thread_data *td)
 
 	if (disk_util_exists(dev))
 		return;
+
+	/*
+	 * for an fs without a device, we will repeatedly stat through
+	 * sysfs which can take oodles of time for thousands of files. so
+	 * cache the last lookup and compare with that before going through
+	 * everything again.
+	 */
+	if (dev == last_dev)
+		return;
+
+	last_dev = dev;
 		
 	sprintf(foo, "/sys/block");
 	if (!find_block_dir(dev, foo))
@@ -454,9 +466,10 @@ static void show_thread_status(struct thread_data *td,
 	else
 		fprintf(f_out, "%s: (groupid=%d): err=%2d (%s): pid=%d\n",td->name, td->groupid, td->error, td->verror, td->pid);
 
-	show_ddir_status(td, rs, td->ddir);
-	if (td->io_bytes[td->ddir ^ 1])
-		show_ddir_status(td, rs, td->ddir ^ 1);
+	if (td_read(td))
+		show_ddir_status(td, rs, DDIR_READ);
+	if (td_write(td))
+		show_ddir_status(td, rs, DDIR_WRITE);
 
 	runtime = mtime_since(&td->epoch, &td->end_time);
 	if (runtime) {