Add an '-a' switch to only display providers that are at least

0.1% busy.

OK'ed by:  phk

2 files changed, 13 insertions, 3 deletions

diff --git a/usr.sbin/gstat/gstat.8 b/usr.sbin/gstat/gstat.8
index 5d482663800e..abdde06c47ed 100644
--- a/usr.sbin/gstat/gstat.8
+++ b/usr.sbin/gstat/gstat.8
@@ -32,7 +32,7 @@
 .Nd print statistics about GEOM disks
 .Sh SYNOPSIS
 .Nm
-.Op Fl cd
+.Op Fl acd
 .Op Fl I Ar interval
 .Sh DESCRIPTION
 The
@@ -43,6 +43,8 @@ devices.
 .Pp
 The options are as follows:
 .Bl -tag -width indent
+.It Fl a
+Only display providers that are at least 0.1% busy.
 .It Fl c
 Enable display of
 .Xr geom 4
diff --git a/usr.sbin/gstat/gstat.c b/usr.sbin/gstat/gstat.c
index c92f70ea28e2..e7bb23bce73a 100644
--- a/usr.sbin/gstat/gstat.c
+++ b/usr.sbin/gstat/gstat.c
@@ -47,7 +47,7 @@
 #include <devstat.h>
 #include <sys/devicestat.h>
 
-static int flag_c, flag_d;
+static int flag_a, flag_c, flag_d;
 static int flag_I = 500000;
 
 static void usage(void);
@@ -69,8 +69,11 @@ main(int argc, char **argv)
 	long double ld[11];
 	uint64_t u64;
 
-	while ((i = getopt(argc, argv, "dcI:")) != -1) {
+	while ((i = getopt(argc, argv, "adcI:")) != -1) {
 		switch (i) {
+		case 'a':
+			flag_a = 1;
+			break;
 		case 'c':
 			flag_c = 1;
 			break;
@@ -187,6 +190,11 @@ main(int argc, char **argv)
 			    DSM_MS_PER_TRANSACTION_FREE, &ld[10],
 			    DSM_NONE);
 
+			if (flag_a && ld[7] < 0.1) {
+				*gsq = *gsp;
+				continue;
+			}
+
 			printw(" %4ju", (uintmax_t)u64);
 			printw(" %6.0f", (double)ld[0]);
 			printw(" %6.0f", (double)ld[1]);