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-rw-r--r--usr.bin/systat/systat.121
1 files changed, 9 insertions, 12 deletions
diff --git a/usr.bin/systat/systat.1 b/usr.bin/systat/systat.1
index 64dfa35b871f..b035eb98fd18 100644
--- a/usr.bin/systat/systat.1
+++ b/usr.bin/systat/systat.1
@@ -304,17 +304,16 @@ the number and percentage of the translations that were
handled by the per process name translation cache.
.Pp
At the bottom left is the disk usage display.
-It reports the number of
-kilobytes per transaction, transactions per second and megabytes
-per second averaged over the
+It reports the number of seeks, transfers, and number
+of kilobyte blocks transferred per second averaged over the
refresh period of the display (by default, five seconds).
-The system keeps statistics on most every storage device. In general, up
-to seven devices are displayed. The devices displayed by default are the
-first devices in the kernel's device list. See
-.Xr devstat 3
-and
-.Xr devstat 9
-for details on the devstat system.
+For some disks it also reports the average milliseconds per seek.
+Note that the system only keeps statistics on at most eight disks
+(this is controlled by the constant
+.Dv DK_NDRIVE
+in
+.Aq Pa sys/dkstat.h
+as a kernel compile-time constant).
.Pp
Under the date in the upper right hand quadrant are statistics
on paging and swapping activity.
@@ -375,8 +374,6 @@ Display statistics as a running total from the point this
command is given.
.It Cm time
Display statistics averaged over the refresh interval (the default).
-.It Cm want_fd
-Toggle the display of fd devices in the disk usage display.
.It Cm zero
Reset running statistics to zero.
.El