SYSCTL(8)                 BSD System Manager's Manual                SYSCTL(8)

     sysctl -- get or set kernel state

     sysctl [-bn] name ...
     sysctl [-bn] -w name=value ...
     sysctl [-bn] -a
     sysctl [-bn] -A
     sysctl [-bn] -X

     retrieves kernel state and allows processes with appropriate privilege to set kernel
     state.  The state to be retrieved or set is described using a ``Management Information Base'' (``MIB'')
     style name, described as a dotted set of components.


     -A      List all MIB variables including opaque variables (which are normally suppressed).
                format and length are displayed, as well as a hex dump of the first 16 bytes.

     -X      displays a hex dump of the entire value

     -a      List all the currently available non-opaque values.
                ignored if one or more variable names are specified on the command line.

     -b      Output in raw, binary format.
                No names are output and no terminating newlines are output.
                Useful with a single variable.

     -n      Show only values, not names.  Useful for setting shell variables.
                For instance, to save the pagesize in variable psize:

                   set psize=`sysctl -n hw.pagesize`

     -w name=value Sets values.


     If just a MIB style name is given, the corresponding value is retrieved.

     The information available from sysctl consists of integers, strings, and tables.
     The tabular information can only be retrieved by special programs such as ps, systat, and netstat/code>.
    The string and integer information is summarized below.
    For a detailed description of these variable see sysctl(3).

    The changeable column indicates whether a process with appropriate privilege can change the value.

     Name                            Type          Changeable
     kern.ostype                     string        no
     kern.osrelease                  string        no
     kern.osrevision                 integer       no
     kern.version                    string        no
     kern.maxvnodes                  integer       yes
     kern.maxproc                    integer       yes
     kern.maxfiles                   integer       yes
     kern.argmax                     integer       no
     kern.securelevel                integer       raise only
     kern.hostname                   string        yes
     kern.hostid                     integer       yes
     kern.clockrate                  struct        no
     kern.posix1version              integer       no
     kern.ngroups                    integer       no
     kern.job_control                integer       no
     kern.saved_ids                  integer       no
     kern.link_max                   integer       no
     kern.max_canon                  integer       no
     kern.max_input                  integer       no
     kern.name_max                   integer       no
     kern.path_max                   integer       no
     kern.pipe_buf                   integer       no
     kern.chown_restricted           integer       no
     kern.no_trunc                   integer       no
     kern.vdisable                   integer       no
     kern.boottime                   struct        no

     vm.loadavg                      struct        no
     vm.swapusage                    struct        no

     machdep.console_device          dev_t         no

     net.inet.ip.forwarding          integer       yes
     net.inet.ip.redirect            integer       yes
     net.inet.ip.ttl                 integer       yes
     net.inet.icmp.maskrepl          integer       yes
     net.inet.udp.checksum           integer       yes

     hw.machine                      string        no
     hw.model                        string        no
     hw.ncpu                         integer       no
     hw.byteorder                    integer       no
     hw.physmem                      integer       no
     hw.usermem                      integer       no
     hw.memsize                      integer       no
     hw.pagesize                     integer       no

     user.cs_path                    string        no
     user.bc_base_max                integer       no
     user.bc_dim_max                 integer       no
     user.bc_scale_max               integer       no
     user.bc_string_max              integer       no
     user.coll_weights_max           integer       no
     user.expr_nest_max              integer       no
     user.line_max                   integer       no
     user.re_dup_max                 integer       no

     user.posix2_version             integer       no
     user.posix2_c_bind              integer       no
     user.posix2_c_dev               integer       no
     user.posix2_char_term           integer       no
     user.posix2_fort_dev            integer       no
     user.posix2_fort_run            integer       no
     user.posix2_localedef           integer       no
     user.posix2_sw_dev              integer       no
     user.posix2_upe                 integer       no

     sysctl can get or set debugging variables that have been identified for its display.  
        This information can be obtained by using the command:

       > sysctl debug

            debug.lowpri_IO_initial_window_msecs: 100
            debug.lowpri_IO_window_inc: 50
            debug.lowpri_max_window_msecs: 200
            debug.lowpri_max_waiting_msecs: 200

            debug.bpf_bufsize: 4096
            debug.bpf_maxbufsize: 524288
            debug.bpf_maxdevices: 256

            debug.kextlog: 4083
            debug.iokit: 0
            
sysctl can extract information about the filesystems that have been compiled into the running
           system.  This information can be obtained by using the command:
      
           sysctl vfs

By default, only filesystems that are actively being used are listed.  
    -A lists all the filesystems compiled into the running kernel.

EXAMPLES
     All kernal variables:
          sysctl kern

     the maximum number of processes allowed in the system: 
           sysctl kern.maxproc

     set the maximum number of processes allowed in the system to 1000: 
          sysctl -w kern.maxproc=1000

     clock rate : sysctl kern.clockrate

     load average history : sysctl vm.loadavg

     swap space usage : sysctl vm.swapusage

FILES
/Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers

     <sys/sysctl.h>        top level identifiers, 
                                        second level kernel and hardware identifiers,
                                        and user level identifiers
     <sys/socket.h>        second level network identifiers
     <sys/gmon.h>          third  level profiling identifiers 
     <vm/vm_param.h>       second level virtual memory identifiers
     <netinet/in.h>        third  level Internet identifiers and fourth level IP identifiers

     <netinet/icmp_var.h>  fourth level ICMP identifiers
     <netinet/udp_var.h>   fourth level UDP identifiers

SEE ALSO
     sysctl(3)

 on Mac OSX  smackerpro 1 Feb 11

> sysctl vfs
vfs.generic.nfs.client.initialdowndelay: 12
vfs.generic.nfs.client.nextdowndelay: 30
vfs.generic.nfs.client.iosize: 1048576
vfs.generic.nfs.client.access_cache_timeout: 60
vfs.generic.nfs.client.allow_async: 0
vfs.generic.nfs.client.statfs_rate_limit: 10
vfs.generic.nfs.client.nfsiod_thread_max: 16
vfs.generic.nfs.client.nfsiod_thread_count: 0
vfs.generic.nfs.client.lockd_mounts: 0
vfs.generic.nfs.client.max_async_writes: 128
vfs.generic.nfs.client.single_des: 0
vfs.generic.nfs.client.access_delete: 0

vfs.generic.nfs.server.wg_delay: 1000
vfs.generic.nfs.server.wg_delay_v3: 0
vfs.generic.nfs.server.require_resv_port: 0
vfs.generic.nfs.server.async: 0
vfs.generic.nfs.server.export_hash_size: 64
vfs.generic.nfs.server.reqcache_size: 64
vfs.generic.nfs.server.request_queue_length: 128
vfs.generic.nfs.server.user_stats: 1
vfs.generic.nfs.server.gss_context_ttl: 28800
vfs.generic.nfs.server.fsevents: 1
vfs.generic.nfs.server.nfsd_thread_max: 0
vfs.generic.nfs.server.nfsd_thread_count: 0

vfs.generic.always_do_fullfsync: 0

vfs.hfs has 6 mounted instances
vfs.autofs has 2 mounted instances
vfs.smbfs has 2 mounted instances



 on Mac OSX  smackerpro 15 May 11
 sysctl -A        entries reporting no such MIB not shown

kern.ostype = Darwin
kern.osrelease = 10.7.0
kern.osrevision = 199506
kern.version = Darwin Kernel Version 10.7.0: 
        Sat Jan 29 15:17:16 PST 2011; 
        root:xnu-1504.9.37~1/RELEASE_I386
kern.maxvnodes = 62464
kern.maxproc = 532
kern.maxfiles = 12288
kern.argmax = 262144
kern.securelevel = 0
kern.hostname = smackerPro
kern.hostid = 0
kern.clockrate: hz = 100, 
  tick = 10000, profhz = 100, stathz = 100
 Use pstat to view kern.vnode information
 Use ps to view kern.proc information
 Use pstat to view kern.file information
kernel is not compiled for profiling
kern.profiling: kern.posix1version = 200112
kern.ngroups = 16
kern.job_control = 1
kern.saved_ids = 1
kern.boottime = Tue May 10 20:13:27 2011

kern.nisdomainname = 
kern.maxfilesperproc = 10240
kern.maxprocperuid = 266
kern.usrstack = 1606418432
kern.symfile: Input/output error
kern.procargs: Invalid argument
kern.netboot = 0
kern.panicinfo: specification is incomplete
kern.aiomax = 90
kern.aioprocmax = 16
kern.aiothreads = 4
kern.procargs2: Invalid argument
kern.corefile = /cores/core.%P
kern.coredump = 1
kern.sugid_coredump = 0
kern.delayterm = 0
kern.shreg_private = 0
kern.usrstack64 = 140734799806464
kern.nx = 1
kern.procname = 
kern.speculative_reads_disabled = 0
kern.osversion = 10J869
kern.safeboot = 0
kern.rage_vnode = 0
kern.check_openevt: Invalid argument
kern.thread_name = kern

kern.osrelease: 10.7.0
kern.osrevision: 199506
kern.version: Darwin Kernel Version 10.7.0: 
    Sat Jan 29 15:17:16 PST 2011; 
    root:xnu-1504.9.37~1/RELEASE_I386
kern.maxvnodes: 62464
kern.maxproc: 532
kern.maxfiles: 12288
kern.argmax: 262144
kern.securelevel: 0
kern.hostname: smackerPro
kern.hostid: 0
kern.clockrate: { hz = 100, tick = 10000, tickadj = 1, profhz = 100, stathz = 100 }
kern.file: Format:S,filehead Length:28372 Dump:0x50579c08d09d1e0aecdf850003000100...
kern.posix1version: 200112
kern.ngroups: 16
kern.job_control: 1
kern.saved_ids: 1
kern.boottime: { sec = 1305072807, usec = 0 } Tue May 10 20:13:27 2011
kern.nisdomainname: 
kern.maxfilesperproc: 10240
kern.maxprocperuid: 266
kern.ipc.maxsockbuf: 4194304
kern.ipc.sockbuf_waste_factor: 8
kern.ipc.somaxconn: 128
kern.ipc.mbstat: Format:S,mbstat Length:580 Dump:0xb0040000880300000000000028000000...
kern.ipc.nmbclusters: 32768
kern.ipc.soqlimitcompat: 1
kern.ipc.mb_stat: Format:S,mb_stat Length:960 Dump:0x07000000000000006d62756600000000...
kern.ipc.mb_normalized: 0
kern.ipc.sosendminchain: 16384
kern.ipc.sorecvmincopy: 16384
kern.ipc.sosendjcl: 1
kern.ipc.sosendjcl_ignore_capab: 0
kern.ipc.maxsockets: 512
kern.ipc.sbspace_factor: 8
kern.ipc.njcl: 10920
kern.ipc.njclbytes: 16384
kern.ipc.soqlencomp: 0
kern.ipc.sendfileuiobufs: 64
kern.usrstack: 1606418432
kern.netboot: 0
kern.sysv.shmmax: 4194304
kern.sysv.shmmin: 1
kern.sysv.shmmni: 32
kern.sysv.shmseg: 8
kern.sysv.shmall: 1024
kern.sysv.semmni: 87381
kern.sysv.semmns: 87381
kern.sysv.semmnu: 87381
kern.sysv.semmsl: 87381
kern.sysv.semume: 10
kern.exec.archhandler.powerpc: /usr/libexec/oah/translate
kern.aiomax: 90
kern.aioprocmax: 16
kern.aiothreads: 4
kern.corefile: /cores/core.%P
kern.coredump: 1
kern.sugid_coredump: 0
kern.delayterm: 0
kern.shreg_private: 0
kern.posix.sem.max: 
kern.usrstack64: 140734799806464
kern.nx: 1
kern.tfp.policy: 2
kern.procname: 
kern.speculative_reads_disabled: 0
kern.osversion: 10J869
kern.safeboot: 0
kern.lctx.last: 1
kern.lctx.count: 0
kern.lctx.max: 8192
kern.rage_vnode: 0
kern.tty.ptmx_max: 127
kern.threadname: 

kern.sleeptime: { sec = 1305570747, usec = 9423 } Mon May 16 14:32:27 2011
kern.waketime: { sec = 1305577406, usec = 12 } Mon May 16 16:23:26 2011
kern.willshutdown: 0
kern.progressmeterenable: 0
kern.progressmeter: 0
kern.hibernatefile: /var/vm/sleepimage
kern.bootsignature: 76430c7022bf7b3d68a9094d22589673c30323f2

kern.hibernatemode: 31
kern.nbuf: 16384
kern.maxnbuf: 16384
kern.flush_cache_on_write: 0
kern.sugid_scripts: 0
kern.bootargs: -v
kern.num_files: 788
kern.num_vnodes: 62464
kern.num_tasks: 1024
kern.num_threads: 2560
kern.num_taskthreads: 2560
kern.preheat_pages_max: 256
kern.preheat_pages_min: 8
kern.preheat_pages_mult: 4
kern.singleuser: 0
kern.affinity_sets_enabled: 1
kern.affinity_sets_mapping: 1
kern.kdebug_thread_block: 0
kern.stack_size: 16384
kern.stack_depth_max: -7163712
kern.ipc_portbt: 0
kern.msgbuf: 
kern.wq_yielded_threshold: 2000
kern.wq_yielded_window_usecs: 30000
kern.wq_stalled_window_usecs: 200
kern.wq_reduce_pool_window_usecs: 5000000
kern.wq_max_timer_interval_usecs: 50000
kern.wq_max_threads: 512
kern.secure_kernel: 0
vfs.nfs has 0 mounted instances
vfs.unionfs has 0 mounted instances
vfs.hfs has 4 mounted instances
vfs.devfs has 0 mounted instances
vfs.autofs has 2 mounted instances
vfs.smbfs has 2 mounted instances
hw.machine = i386
hw.model = MacBookPro5,5
hw.ncpu = 2
hw.byteorder = 1234
hw.physmem = 2147483648
hw.usermem = 1659994112
hw.pagesize = 4096
hw.epoch = 0
hw.vectorunit = 1
hw.busfrequency = 1064000000
hw.cpufrequency = 2530000000
hw.cachelinesize = 64
hw.l1icachesize = 32768
hw.l1dcachesize = 32768
hw.l2settings = 1
hw.l2cachesize = 3145728
hw.l3settings: Invalid argument
hw.l3cachesize: Invalid argument
hw.tbfrequency = 1000000000
hw.memsize = 4294967296
hw.availcpu = 2
user.cs_path = /usr/bin:/bin:/usr/sbin:/sbin
user.bc_base_max = 99
user.bc_dim_max = 2048
user.bc_scale_max = 99
user.bc_string_max = 1000
user.coll_weights_max = 2
user.expr_nest_max = 32
user.line_max = 2048
user.re_dup_max = 255
user.posix2_version = 200112
user.posix2_c_bind = 0
user.posix2_c_dev = 0
user.posix2_char_term = 0
user.posix2_fort_dev = 0
user.posix2_fort_run = 0
user.posix2_localedef = 0
user.posix2_sw_dev = 0
user.posix2_upe = 0
user.stream_max = 20
user.tzname_max = 255
kern.ostype: Darwin
vm.loadavg: { 0.40 0.34 0.24 }
vm.swapusage: 
total = 64.00M  used = 0.00M  free = 64.00M  (encrypted)
vm.cs_force_kill: 0
vm.cs_force_hard: 0
vm.cs_debug: 0
vm.global_no_user_wire_amount: 67108864
vm.global_user_wire_limit: 3959422976
vm.user_wire_limit: 3959422976
vm.cs_validation: 1
vm.cs_blob_count: 65
vm.cs_blob_size: 484032
vm.cs_blob_count_peak: 200
vm.cs_blob_size_peak: 1423886
vm.cs_blob_size_max: 86016
vm.allow_stack_exec: 0
vm.allow_data_exec: 1
vm.shared_region_unnest_logging: 1
vm.shared_region_trace_level: 1
vm.shared_region_version: 3
vm.shared_region_persistence: 0
vm.vm_page_free_target: 2000
vm.memory_pressure: 0
vm.page_free_wanted: 0
vm.page_purgeable_count: 15588
vm.page_purgeable_wired_count: 0
vm.page_reusable_count: 28716
vm.reusable_success: 92826
vm.reusable_failure: 29833
vm.reusable_shared: 0
vm.all_reusable_calls: 28160
vm.partial_reusable_calls: 71050
vm.reuse_success: 31257
vm.reuse_failure: 518
vm.all_reuse_calls: 19933
vm.partial_reuse_calls: 16511
vm.can_reuse_success: 1310973
vm.can_reuse_failure: 9193

vfs.generic.vfsidlist: Format:S,fsid Length:72 Dump:0x0200000e1100000004354d0813000000...
vfs.generic.nfs.client.initialdowndelay: 12
vfs.generic.nfs.client.nextdowndelay: 30
vfs.generic.nfs.client.iosize: 1048576
vfs.generic.nfs.client.access_cache_timeout: 60
vfs.generic.nfs.client.allow_async: 0
vfs.generic.nfs.client.statfs_rate_limit: 10
vfs.generic.nfs.client.nfsiod_thread_max: 16
vfs.generic.nfs.client.nfsiod_thread_count: 0
vfs.generic.nfs.client.lockd_mounts: 0
vfs.generic.nfs.client.max_async_writes: 128
vfs.generic.nfs.client.single_des: 0
vfs.generic.nfs.client.access_delete: 0
vfs.generic.nfs.server.wg_delay: 1000
vfs.generic.nfs.server.wg_delay_v3: 0
vfs.generic.nfs.server.require_resv_port: 0
vfs.generic.nfs.server.async: 0
vfs.generic.nfs.server.export_hash_size: 64
vfs.generic.nfs.server.reqcache_size: 64
vfs.generic.nfs.server.request_queue_length: 128
vfs.generic.nfs.server.user_stats: 1
vfs.generic.nfs.server.gss_context_ttl: 28800
vfs.generic.nfs.server.fsevents: 1
vfs.generic.nfs.server.nfsd_thread_max: 0
vfs.generic.nfs.server.nfsd_thread_count: 0
vfs.generic.always_do_fullfsync: 0
net.local.stream.sendspace: 8192
net.local.stream.recvspace: 8192
net.local.stream.pcblist: Format:S,xunpcb Length:86916 Dump:0x1800000096000000a457010000000000...
net.local.stream.pcblist64: Format:S,xunpcb64 Length:91272 Dump:0x1800000095000000a557010000000000...
net.local.dgram.maxdgram: 2048
net.local.dgram.recvspace: 4096
net.local.dgram.pcblist: Format:S,xunpcb Length:15780 Dump:0x1800000095000000a557010000000000...
net.local.dgram.pcblist64: Format:S,xunpcb64 Length:16700 Dump:0x1800000095000000a557010000000000...
net.local.inflight: 0
net.inet.ip.portrange.lowfirst: 1023
net.inet.ip.portrange.lowlast: 600
net.inet.ip.portrange.first: 49152
net.inet.ip.portrange.last: 65535
net.inet.ip.portrange.hifirst: 49152
net.inet.ip.portrange.hilast: 65535
net.inet.ip.forwarding: 0
net.inet.ip.redirect: 1
net.inet.ip.ttl: 64
net.inet.ip.rtexpire: 62
net.inet.ip.rtminexpire: 10
net.inet.ip.rtmaxcache: 128
net.inet.ip.sourceroute: 0
net.inet.ip.intr_queue_maxlen: 50
net.inet.ip.intr_queue_drops: 0
net.inet.ip.stats: Format:S,ipstat Length:116 Dump:0x1e081600000000000000000000000000...
net.inet.ip.accept_sourceroute: 0
net.inet.ip.fastforwarding: 0
net.inet.ip.keepfaith: 0
net.inet.ip.gifttl: 30
net.inet.ip.subnets_are_local: 0
net.inet.ip.check_route_selfref: 1
net.inet.ip.use_route_genid: 1
net.inet.ip.dummynet.hash_size: 64
net.inet.ip.dummynet.curr_time: 0
net.inet.ip.dummynet.ready_heap: 0
net.inet.ip.dummynet.extract_heap: 0
net.inet.ip.dummynet.searches: 0
net.inet.ip.dummynet.search_steps: 0
net.inet.ip.dummynet.expire: 1
net.inet.ip.dummynet.max_chain_len: 16
net.inet.ip.dummynet.red_lookup_depth: 256
net.inet.ip.dummynet.red_avg_pkt_size: 512
net.inet.ip.dummynet.red_max_pkt_size: 1500
net.inet.ip.dummynet.debug: 0
net.inet.ip.fw.enable: 1
net.inet.ip.fw.autoinc_step: 100
net.inet.ip.fw.one_pass: 0
net.inet.ip.fw.debug: 0
net.inet.ip.fw.verbose: 0
net.inet.ip.fw.verbose_limit: 0
net.inet.ip.fw.dyn_buckets: 256
net.inet.ip.fw.curr_dyn_buckets: 256
net.inet.ip.fw.dyn_count: 0
net.inet.ip.fw.dyn_max: 4096
net.inet.ip.fw.static_count: 1
net.inet.ip.fw.dyn_ack_lifetime: 300
net.inet.ip.fw.dyn_syn_lifetime: 20
net.inet.ip.fw.dyn_fin_lifetime: 1
net.inet.ip.fw.dyn_rst_lifetime: 1
net.inet.ip.fw.dyn_udp_lifetime: 10
net.inet.ip.fw.dyn_short_lifetime: 5
net.inet.ip.fw.dyn_keepalive: 1
net.inet.ip.maxfragpackets: 1024
net.inet.ip.maxfragsperpacket: 128
net.inet.ip.maxfrags: 2048
net.inet.ip.scopedroute: 1
net.inet.ip.check_interface: 0
net.inet.ip.linklocal.stat: Format:S,ip_linklocal_stat Length:16 Dump:0x19920000d89100004d0000003d000000...
net.inet.ip.linklocal.in.allowbadttl: 1
net.inet.ip.random_id: 1
net.inet.ip.maxchainsent: 28
net.inet.ip.select_srcif_debug: 0
net.inet.icmp.maskrepl: 0
net.inet.icmp.stats: Format:S,icmpstat Length:368 Dump:0x57060000000000000000000024000000...
net.inet.icmp.icmplim: 250
net.inet.icmp.timestamp: 0
net.inet.icmp.drop_redirect: 0
net.inet.icmp.log_redirect: 0
net.inet.icmp.bmcastecho: 1
net.inet.igmp.stats: Format:S,igmpstat Length:36 Dump:0x00000000000000000000000000000000...
net.inet.tcp.rfc1323: 1
net.inet.tcp.rfc1644: 0
net.inet.tcp.mssdflt: 512
net.inet.tcp.stats: Format:S,tcpstat Length:352 Dump:0x85710000ea010000087200009b010000...
net.inet.tcp.keepidle: 7200000
net.inet.tcp.keepintvl: 75000
net.inet.tcp.sendspace: 65536
net.inet.tcp.recvspace: 65536
net.inet.tcp.keepinit: 75000
net.inet.tcp.pcblist: Format:S,xtcpcb Length:10528 Dump:0x180000001500000081d7010000000000...
net.inet.tcp.v6mssdflt: 1024
net.inet.tcp.log_in_vain: 0
net.inet.tcp.blackhole: 0
net.inet.tcp.delayed_ack: 3
net.inet.tcp.tcp_lq_overflow: 1
net.inet.tcp.drop_synfin: 1
net.inet.tcp.reass.maxsegments: 2048
net.inet.tcp.reass.cursegments: 0
net.inet.tcp.reass.overflows: 0
net.inet.tcp.slowlink_wsize: 8192
net.inet.tcp.maxseg_unacked: 8
net.inet.tcp.rfc3465: 1
net.inet.tcp.rfc3465_lim2: 1
net.inet.tcp.rexmt_thresh: 2
net.inet.tcp.path_mtu_discovery: 1
net.inet.tcp.slowstart_flightsize: 1
net.inet.tcp.local_slowstart_flightsize: 8
net.inet.tcp.newreno: 0
net.inet.tcp.tso: 1
net.inet.tcp.ecn_initiate_out: 0
net.inet.tcp.ecn_negotiate_in: 0
net.inet.tcp.packetchain: 50
net.inet.tcp.socket_unlocked_on_output: 1
net.inet.tcp.sack: 1
net.inet.tcp.sack_maxholes: 128
net.inet.tcp.sack_globalmaxholes: 65536
net.inet.tcp.sack_globalholes: 0
net.inet.tcp.minmss: 216
net.inet.tcp.minmssoverload: 0
net.inet.tcp.do_tcpdrain: 0
net.inet.tcp.pcbcount: 21
net.inet.tcp.icmp_may_rst: 1
net.inet.tcp.strict_rfc1948: 0
net.inet.tcp.isn_reseed_interval: 0
net.inet.tcp.background_io_enabled: 1
net.inet.tcp.rtt_min: 1
net.inet.tcp.randomize_ports: 0
net.inet.tcp.tcbhashsize: 4096
net.inet.tcp.pcblist64: Format:S,xtcpcb64 Length:9488 Dump:0x180000001500000081d7010000000000...
net.inet.tcp.background_io_trigger: 5
net.inet.tcp.msl: 15000
net.inet.tcp.always_keepalive: 0
net.inet.tcp.broken_peer_syn_rxmit_thres: 7
net.inet.tcp.pmtud_blackhole_detection: 1
net.inet.tcp.pmtud_blackhole_mss: 1200
net.inet.tcp.win_scale_factor: 3
net.inet.tcp.in_sw_cksum: 1304722
net.inet.tcp.in_sw_cksum_bytes: 974145241
net.inet.tcp.out_sw_cksum: 1598852
net.inet.tcp.out_sw_cksum_bytes: 172745314
net.inet.tcp.sockthreshold: 64
net.inet.udp.checksum: 1
net.inet.udp.stats: Format:S,udpstat Length:44 Dump:0x83c50000000000000000000000000000...
net.inet.udp.maxdgram: 9216
net.inet.udp.recvspace: 42080
net.inet.udp.pcblist: Format:S,xinpcb Length:19568 Dump:0x180000003d000000ed7b010000000000...
net.inet.udp.in_sw_cksum: 44082
net.inet.udp.in_sw_cksum_bytes: 15642239
net.inet.udp.out_sw_cksum: 17173
net.inet.udp.out_sw_cksum_bytes: 1339817
net.inet.udp.log_in_vain: 0
net.inet.udp.blackhole: 0
net.inet.udp.pcbcount: 61
net.inet.udp.randomize_ports: 1
net.inet.udp.pcblist64: Format:S,xinpcb64 Length:15908 Dump:0x180000003d000000ed7b010000000000...
net.inet.ipsec.stats: Format:S,ipsecstat Length:12432 Dump:0x00000000000000000000000000000000...
net.inet.ipsec.def_policy: 1
net.inet.ipsec.esp_trans_deflev: 1
net.inet.ipsec.esp_net_deflev: 1
net.inet.ipsec.ah_trans_deflev: 1
net.inet.ipsec.ah_net_deflev: 1
net.inet.ipsec.ah_cleartos: 1
net.inet.ipsec.ah_offsetmask: 0
net.inet.ipsec.dfbit: 0
net.inet.ipsec.ecn: 0
net.inet.ipsec.debug: 0
net.inet.ipsec.esp_randpad: -1
net.inet.ipsec.bypass: 1
net.inet.ipsec.esp_port: 0
net.inet.raw.maxdgram: 8192
net.inet.raw.recvspace: 8192
net.inet.raw.pcblist: Format:S,xinpcb Length:368 Dump:0x18000000010000007100000000000000...
net.inet.raw.pcblist64: Format:S,xinpcb64 Length:308 Dump:0x18000000010000007100000000000000...
net.link.generic.system.ifcount: 6
net.link.generic.system.multi_threaded_input: 1
net.link.generic.system.dlil_input_sanity_check: 0
net.link.generic.system.dlil_verbose: 0
net.link.ether.inet.prune_intvl: 300
net.link.ether.inet.max_age: 1200
net.link.ether.inet.host_down_time: 20
net.link.ether.inet.apple_hwcksum_tx: 1
net.link.ether.inet.apple_hwcksum_rx: 1
net.link.ether.inet.maxtries: 5
net.link.ether.inet.useloopback: 1
net.link.ether.inet.proxyall: 0
net.link.ether.inet.sendllconflict: 0
net.link.ether.inet.log_arp_warnings: 0
net.link.ether.inet.keep_announcements: 1
net.link.ether.inet.send_conflicting_probes: 1
net.key.debug: 0
net.key.spi_trycnt: 1000
net.key.spi_minval: 256
net.key.spi_maxval: 268435455
net.key.int_random: 60
net.key.larval_lifetime: 30
net.key.blockacq_count: 10
net.key.blockacq_lifetime: 20
net.key.esp_keymin: 256
net.key.esp_auth: 0
net.key.ah_keymin: 128
net.key.prefered_oldsa: 0
net.key.natt_keepalive_interval: 20
net.key.pfkeystat: Format:S,pfkeystat Length:4240 Dump:0x00000000000000000000000000000000...
net.inet6.ip6.forwarding: 0
net.inet6.ip6.redirect: 1
net.inet6.ip6.hlim: 64
net.inet6.ip6.stats: Format:S,ip6stat Length:3200 Dump:0xad0c0000000000000000000000000000...
net.inet6.ip6.maxfragpackets: 1024
net.inet6.ip6.accept_rtadv: 0
net.inet6.ip6.keepfaith: 0
net.inet6.ip6.log_interval: 5
net.inet6.ip6.hdrnestlimit: 50
net.inet6.ip6.dad_count: 1
net.inet6.ip6.auto_flowlabel: 1
net.inet6.ip6.defmcasthlim: 1
net.inet6.ip6.gifhlim: 0
net.inet6.ip6.kame_version: 20010528/apple-darwin
net.inet6.ip6.use_deprecated: 1
net.inet6.ip6.rr_prune: 5
net.inet6.ip6.v6only: 0
net.inet6.ip6.rtexpire: 3600
net.inet6.ip6.rtminexpire: 10
net.inet6.ip6.rtmaxcache: 128
net.inet6.ip6.use_tempaddr: 0
net.inet6.ip6.temppltime: 86400
net.inet6.ip6.tempvltime: 604800
net.inet6.ip6.auto_linklocal: 1
net.inet6.ip6.rip6stats: Format:S,rip6stat Length:56 Dump:0x00000000000000000000000000000000...
net.inet6.ip6.maxfrags: 8192
net.inet6.ip6.neighborgcthresh: 1024
net.inet6.ip6.maxifprefixes: 16
net.inet6.ip6.maxifdefrouters: 16
net.inet6.ip6.maxdynroutes: 1024
net.inet6.ip6.fw.enable: 1
net.inet6.ip6.fw.debug: 0
net.inet6.ip6.fw.verbose: 0
net.inet6.ip6.fw.verbose_limit: 0
net.inet6.ipsec6.stats: Format:S,ipsecstat Length:12432 Dump:0x00000000000000000000000000000000...
net.inet6.ipsec6.def_policy: 1
net.inet6.ipsec6.esp_trans_deflev: 1
net.inet6.ipsec6.esp_net_deflev: 1
net.inet6.ipsec6.ah_trans_deflev: 1
net.inet6.ipsec6.ah_net_deflev: 1
net.inet6.ipsec6.ecn: 0
net.inet6.ipsec6.debug: 0
net.inet6.ipsec6.esp_randpad: -1
net.inet6.icmp6.stats: Format:S,icmp6stat Length:4328 Dump:0x00000000000000000000000000000000...
net.inet6.icmp6.rediraccept: 1
net.inet6.icmp6.redirtimeout: 600
net.inet6.icmp6.nd6_prune: 1
net.inet6.icmp6.nd6_delay: 5
net.inet6.icmp6.nd6_umaxtries: 3
net.inet6.icmp6.nd6_mmaxtries: 3
net.inet6.icmp6.nd6_useloopback: 1
net.inet6.icmp6.nodeinfo: 3
net.inet6.icmp6.errppslimit: 500
net.inet6.icmp6.nd6_maxnudhint: 0
net.inet6.icmp6.nd6_debug: 0
net.inet6.icmp6.nd6_prlist: Format:S,in6_defrouter Length:144 Dump:0x1c1e000000000000fe80000000000000...
net.alf.loglevel: 55
net.alf.perm: 0
net.alf.defaultaction: 1
net.alf.mqcount: 0
net.alf.stats_sflt_state: Format:S,sockwall_sflt_state Length:5760 Dump:0x84ec890848000000000000006c61756e...
net.alf.sw_pid_entry: Format:S,sw_pid_entry Length:2674 Dump:0x843d32100000000070000000a0200000...
net.alf.sw_app_entry: Format:S,sw_app_entry Length:624 Dump:0x0477f908000000006800000000000000...
net.smb.fs.version: 106600
net.smb.fs.loglevel: 0
net.smb.fs.tcpsndbuf: 131072
net.smb.fs.tcprcvbuf: 131072
debug.lowpri_IO_initial_window_msecs: 100
debug.lowpri_IO_window_inc: 50
debug.lowpri_max_window_msecs: 200
debug.lowpri_max_waiting_msecs: 200
debug.bpf_bufsize: 4096
debug.bpf_maxbufsize: 524288
debug.bpf_maxdevices: 256
debug.kextlog: 4083
debug.iokit: 0
hw.ncpu: 2
hw.byteorder: 1234
hw.memsize: 4294967296
hw.activecpu: 2
hw.physicalcpu: 2
hw.physicalcpu_max: 2
hw.logicalcpu: 2
hw.logicalcpu_max: 2
hw.cputype: 7
hw.cpusubtype: 4
hw.cpu64bit_capable: 1
hw.cpufamily: 2028621756
hw.cacheconfig: 2 1 2 0 0 0 0 0 0 0
hw.cachesize: 4026531840 32768 3145728 0 0 0 0 0 0 0
hw.pagesize: 4096
hw.busfrequency: 1064000000
hw.busfrequency_min: 1064000000
hw.busfrequency_max: 1064000000
hw.cpufrequency: 2530000000
hw.cpufrequency_min: 2530000000
hw.cpufrequency_max: 2530000000
hw.cachelinesize: 64
hw.l1icachesize: 32768
hw.l1dcachesize: 32768
hw.l2cachesize: 3145728
hw.tbfrequency: 1000000000
hw.packages: 1
hw.optional.floatingpoint: 1
hw.optional.mmx: 1
hw.optional.sse: 1
hw.optional.sse2: 1
hw.optional.sse3: 1
hw.optional.supplementalsse3: 1
hw.optional.sse4_1: 1
hw.optional.sse4_2: 0
hw.optional.x86_64: 1
hw.optional.aes: 0
machdep.cpu.max_basic: 13
machdep.cpu.max_ext: 2147483656
machdep.cpu.vendor: GenuineIntel
machdep.cpu.brand_string: Intel(R) Core(TM)2 Duo CPU     P8700  @ 2.53GHz
machdep.cpu.family: 6
machdep.cpu.model: 23
machdep.cpu.extmodel: 1
machdep.cpu.extfamily: 0
machdep.cpu.stepping: 10
machdep.cpu.feature_bits: 3219913727 67691517
machdep.cpu.extfeature_bits: 537921536 1
machdep.cpu.signature: 67194
machdep.cpu.brand: 0
machdep.cpu.features:  FPU VME DE PSE TSC MSR PAE MCE CX8 APIC SEP MTRR PGE MCA CMOV PAT PSE36 CLFSH DS ACPI MMX FXSR SSE SSE2 SS HTT TM SSE3 MON DSCPL VMX SMX EST TM2 SSSE3 CX16 TPR PDCM SSE4.1
machdep.cpu.extfeatures:  SYSCALL XD EM64T LAHF
machdep.cpu.logical_per_package: 2
machdep.cpu.cores_per_package: 2
machdep.cpu.microcode_version: 2567
machdep.cpu.mwait.linesize_min: 64
machdep.cpu.mwait.linesize_max: 64
machdep.cpu.mwait.extensions: 3
machdep.cpu.mwait.sub_Cstates: 51520032
machdep.cpu.thermal.sensor: 1
machdep.cpu.thermal.dynamic_acceleration: 0
machdep.cpu.thermal.invariant_APIC_timer: 0
machdep.cpu.thermal.thresholds: 2
machdep.cpu.thermal.ACNT_MCNT: 1
machdep.cpu.arch_perf.version: 2
machdep.cpu.arch_perf.number: 2
machdep.cpu.arch_perf.width: 40
machdep.cpu.arch_perf.events_number: 7
machdep.cpu.arch_perf.events: 0
machdep.cpu.arch_perf.fixed_number: 3
machdep.cpu.arch_perf.fixed_width: 40
machdep.cpu.cache.linesize: 64
machdep.cpu.cache.L2_associativity: 6
machdep.cpu.cache.size: 3072
machdep.cpu.tlb.inst.small: 128
machdep.cpu.tlb.inst.large: 8
machdep.cpu.tlb.data.small: 16
machdep.cpu.tlb.data.small_level1: 256
machdep.cpu.tlb.data.large: 16
machdep.cpu.tlb.data.large_level1: 32
machdep.cpu.address_bits.physical: 36
machdep.cpu.address_bits.virtual: 48
machdep.cpu.core_count: 2
machdep.cpu.thread_count: 2
machdep.pmap.hashwalks: 9692265
machdep.pmap.hashcnts: 9979915
machdep.pmap.hashmax: 17
machdep.pmap.kernel_text_ps: 2097152
machdep.memmap.Conventional: 4022472704
machdep.memmap.RuntimeServices: 299008
machdep.memmap.ACPIReclaim: 81920
machdep.memmap.ACPINVS: 2211840
machdep.memmap.PalCode: 0
machdep.memmap.Reserved: 268460032
machdep.memmap.Unusable: 0
machdep.memmap.Other: 0
security.mac.sandbox.backtraces: 0
security.mac.max_slots: 7
security.mac.labelvnodes: 0
security.mac.mmap_revocation: 0
security.mac.mmap_revocation_via_cow: 0
security.mac.device_enforce: 1
security.mac.file_enforce: 0
security.mac.iokit_enforce: 0
security.mac.pipe_enforce: 1
security.mac.posixsem_enforce: 1
security.mac.posixshm_enforce: 1
security.mac.proc_enforce: 1
security.mac.socket_enforce: 1
security.mac.system_enforce: 1
security.mac.sysvmsg_enforce: 1
security.mac.sysvsem_enforce: 1
security.mac.sysvshm_enforce: 1
security.mac.vm_enforce: 1
security.mac.vnode_enforce: 1
appleprofile.allow_new_clients: 1
appleprofile.enable_profiling: 0
appleprofile.max_special_alloc: 1006266368
appleprofile.current_special_alloc: 0
appleprofile.actions.registered_actions: 6
appleprofile.actions.callstack.default_continuous_buffer_size: 2097152
appleprofile.actions.callstack.max_memory: 33554432
appleprofile.actions.kevent.default_continuous_buffer_size: 5242880
appleprofile.actions.kevent.max_memory: 268435456
appleprofile.actions.register_state.default_continuous_buffer_size: 2097152
appleprofile.actions.register_state.max_memory: 33554432
appleprofile.actions.threadinfo.default_continuous_buffer_size: 1048576
appleprofile.actions.threadinfo.max_memory: 88080384
appleprofile.actions.timestamp.default_continuous_buffer_size: 524288
appleprofile.actions.timestamp.max_memory: 33554432
appleprofile.triggers.poll_interval: 100
appleprofile.triggers.max_access_wait_per_core: 1000000
appleprofile.triggers.max_access_wait_total: 1000000
appleprofile.pmcs.cur_sys_reservations: 0
appleprofile.pmcs.max_sys_reservations: 20
appleprofile.pmcs.cur_task_reservations: 0
appleprofile.pmcs.max_task_reservations: 20
appleprofile.pmcs.cur_thread_reservations: 0
appleprofile.pmcs.max_thread_reservations: 20





Additions when specifying -a

vfs.nfs has 0 mounted instances                          
vfs.unionfs has 0 mounted instances
vfs.devfs has 0 mounted instances
Format
Length  
Dump
  kern.file
S,filehead
28372
0x50579c08d09d1e0aecdf8500030
  kern.ipc.mbstat
S,mbstat
580
0xb004000088030000000000002
  kern.ipc.mb_stat
S,mb_stat
960
0x07000000000000006d62756
  vfs.generic.vfsidlist
S,fsid
72
0x0200000e1100000004354d
  net.local.stream.pcblist
S,xunpcb
86916
0x18000000960000
  net.local.stream.pcblist64
S,xunpcb64
91272
0x1800000095
  net.local.dgram.pcblist
S,xunpcb
15780
0x180000009500000
  net.local.dgram.pcblist64
S,xunpcb64
16700
0x18000000950
  net.inet.ip.stats
S,ipstat
116
0x1e081600000000000000000
           ip.linklocal.stat
S,ip_linklocal_stat
16
0x1992
           icmp.stats
S,icmpstat
368
0x5706000000000000000
           igmp.stats
S,igmpstat
36
0x00000000000000000000
           tcp.stats
S,tcpstat
352
0x85710000ea01000008720
           tcp.pcblist
S,xtcpcb
10528
0x180000001500000081
           tcp.pcblist64
S,xtcpcb64
9488
0x180000001500000
           udp.stats
S,udpstat
44
0x83c5000000000000000000
           udp.out_sw_cksum_bytes: 1339817
           udp.pcblist64
S,xinpcb64
15908
0x180000003d0000
           ipsec.stats
S,ipsecstat
12432
0x000000000000000
           raw.pcblist
S,xinpcb
368
0x18000000010000007100
           raw.pcblist64
S,xinpcb64
308
0x1800000001000000
  net.key.pfkeystat
S,pfkeystat
4240
0x0000000000000000000
  net.inet6.ip6.stats
S,ip6stat
3200
0xad0c000000000000000
          6.ip6.rip6stats
S,rip6stat
56
0x0000000000000000
          6.ipsec6.stats
S,ipsecstat
12432
0x0000000000000
          6.icmp6.stats
S,icmp6stat
4328
0x000000000000000
          6.icmp6.nd6_prlist
S,in6_defrouter
144
0x1c1e000
  net.alf.stats_sflt_state
S,sockwall_sflt_state
5760
0x84
         .sw_pid_entry
S,sw_pid_entry
2674
0x843d321000000
         .sw_app_entry
S,sw_app_entry
624
0x0477f908000000