file access statistics  (-a)

	   Report use of file  access  system  routines:  iget/s,
           namei/s, dirblk/s

buffer activity (-b)
	
           bread/s, bwrit/s
                 transfers per  second  of  data  between  system
                 buffers and disk or other block devices.

           lread/s, lwrit/s
                 accesses of system buffers.

           %rcache, %wcache
                 cache hit ratios, that is, (1-bread/lread) as  a
                 percentage.
	

system calls (-c)

           scall/s
                 system calls of all types.

           sread/s, swrit/s, fork/s, exec/s
                 specific system calls.

           rchar/s, wchar/s
                 characters transferred by read and write  system
                 calls.  No  incoming  or  outgoing  exec(2)  and
                 fork(2) calls are reported.

paging activities (-g) 

           pgout/s
                 page-out requests per second.

           ppgout/s
                 pages paged-out per second.

           pgfree/s
                 pages per second placed on the free list by  the
                 page stealing daemon.

           pgscan/s
                 pages per second scanned by  the  page  stealing
                 daemon.

           %ufs_ipf
                 the percentage  of  UFS  inodes  taken  off  the
                 freelist  by iget which had reusable pages asso-
                 ciated with them. These pages  are  flushed  and
                 cannot  be reclaimed by processes. Thus, this is
                 the percentage of igets with page flushes.
  

kernel memory allocation (KMA) (-k)

           sml_mem, alloc, fail
                 information about the memory pool reserving  and
                 allocating  space for small requests: the amount
                 of memory in bytes KMA has for the  small  pool,
                 the   number   of  bytes  allocated  to  satisfy
                 requests for small amounts of  memory,  and  the
                 number  of  requests for small amounts of memory
                 that were not satisfied (failed).

           lg_mem, alloc, fail
                 information for the large memory pool (analogous
                 to the information for the small memory pool).

           ovsz_alloc, fail
                 the amount  of  memory  allocated  for  oversize
                 requests  and  the  number  of oversize requests
                 which could not be satisfied (because  oversized
                 memory  is allocated dynamically, there is not a
                 pool).

message and semaphore activity  (-m)

           msg/s, sema/s
                 primitives per second.

paging activity (-p) 

           atch/s
                 page faults per second  that  are  satisfied  by
                 reclaiming  a page currently in memory (attaches
                 per second).

           pgin/s
                 page-in requests per second.

           ppgin/s
                 pages paged-in per second.

           pflt/s
                 page faults from protection  errors  per  second
                 (illegal access to page) or "copy-on-writes".

           vflt/s
                 address  translation  page  faults  per   second
                 (valid page not in memory).

           slock/s
                 faults  per  second  caused  by  software   lock
                 requests requiring physical I/O.

average occupied queue length and percent occupied (-q) 

           runq-sz, %runocc
                 run queue of processes in memory and runnable.

           swpq-sz, %swpocc
                 these are no longer reported by sar.

unused memory pages and disk blocks (-r)

           freemem
                 average pages available to user processes.

           freeswap
                 disk blocks available for page swapping.

CPU usage (-u)

            %usr, %sys, %wio, %idle
                 portion of time running in user mode, running in
                 system  mode, idle with some process waiting for
                 block I/O, and otherwise idle.

process, inode and file tables (-v)

           proc-sz, inod-sz, file-sz, lock-sz
                 entries/size for each table, evaluated  once  at
                 sampling point.

           ov    overflows that occur between sampling points for
                 each table.

swapping and switching (-w)

           swpin/s, swpot/s, bswin/s, bswot/s
                 number of transfers and number of 512-byte units
                 transferred  for swapins and swapouts (including
                 initial loading of some programs).

           pswch/s
                 process switches.

 TTY device activity (-y)

           rawch/s, canch/s, outch/s
                 input character rate, input character rate  pro-
                 cessed by canon, output character rate.

           rcvin/s, xmtin/s, mdmin/s
                 receive, transmit and modem interrupt rates.