Fix "slow (on-the-fly) zero fills percentage (`%slo-z')" some more. The

value printed is actually the optimized (i.e., the non-slow, not-on-the-fly
zero fills percentage) except in overflow cases.  Describe it as %ozfod
in the display.  Move the field descriptor 1 to the left so that there
is space for 5 characters after the % sign (this leaves no space between
the number and the descriptor but the % character serves well as a
separator).

Fixed integer overflow at z.ozfod = UINT_MAX/100 in the calculation of
%ozfod.  This value can be reached just a few hours or minutes after
booting, so %ozfod was usually garbage in boot mode.  Now %ozfod is
correct in boot mode for a few days or hours.

Print a non-dummy %ozfod when the division for it isn't division by 0
instead of when the result will be less than 100%.  A result of 100%
may be correct, though a result of more than 100% indicates overflow
of one or both counters.

1 files changed, 1 insertions, 1 deletions

diff --git a/usr.bin/systat/systat.1 b/usr.bin/systat/systat.1
index f0002e0dd462..dff7ad499e92 100644
--- a/usr.bin/systat/systat.1
+++ b/usr.bin/systat/systat.1
@@ -367,7 +367,7 @@ memory system which list the average number of
 pages copied on write (`cow'),
 pages zero filled on demand (`zfod'),
 pages optimize zero filled on demand (`ozfod'),
-slow (on-the-fly) zero fills percentage (`%sloz'),
+the ratio ozfod / zfod as a percentage (`%ozfod'),
 total pages freed (`totfr'),
 pages wired down (`wire'),
 active pages (`act'),