zprint(1) zprint(1)
NAME
zprint - show information about kernel zones
SYNOPSIS
zprint [-w] [-s] [-c] [-h] [-t] [-d] [-p <pid>][name]
DESCRIPTION
zprint(1) displays data about Mach zones. By default, zprint will
print out information about all Mach zones. If the optional name is
specified, zprint will print information about each zone for which name
is a substring of the zone's name.
zprint interprets the following options:
-c (Default) zprint prints zone info in columns. Long zone names
are truncated with '$', and spaces are replaced with '.', to
allow for sorting by column. Pageable and collectible zones
are shown with 'P' and 'C' on the far right. Zones with prepos-
terously large maximum sizes are shown with '----' in the max
size and max num elts fields.
-h (Default) Shows headings for the columns printed with the -c
option. It may be useful to override this option when sorting
by column.
-s zprint sorts the zones, showing the zone wasting the most mem-
ory first.
-w For each zone, zprint calculates how much space is allocated
but not currently in use, the space wasted by the zone.
-t For each zone, zprint calculates the total size of allocations
from the zone over the life of the zone.
-d Display deltas over time, showing any zones that have achieved
a new maximum current allocation size during the interval. If
the total allocation sizes are being displayed for the zones in
question, it will also display the deltas if the total alloca-
tions have doubled. -p <pid> Display zone usage related to the
specified process id. Each zone will display standard columns
and the amount of memory from that zone associated with a given
process. The letter "A" in the flags column indicates that
this total is being accounted to the process. Otherwise, the
total is an indication of the influence the process has on the
kernel, but the memory is being accounted to the kernel proper.
Any option (including default options) can be overridden by specifying
the option in upper-case; for example, -C overrides the (default)
option -c.
02/12/09 zprint(1)
Mac OS X 10.7 - Generated Wed Aug 10 19:05:26 CDT 2011