acct man page on SmartOS

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       acct.h, acct - per-process accounting file format

       #include <sys/types.h>
       #include <sys/acct.h>

       Files  produced as a result of calling acct(2) have records in the form
       defined by <sys/acct.h>, whose contents are:

	 typedef ushort_t  comp_t;   /* pseudo "floating point"
					representation */
				     /* 3 bit base-8 exponent in the high */
				     /* order bits, and a 13-bit fraction */
				     /* in the low order bits. */

	 struct	   acct
	     char   ac_flag;	/* Accounting flag */
	     char   ac_stat;	/* Exit status */
	     uid_t  ac_uid;	/* Accounting user ID */
	     gid_t  ac_gid;	/* Accounting group ID */
	     dev_t  ac_tty;	/* control tty */
	     time_t ac_btime;	/* Beginning time */
	     comp_t ac_utime;	/* accounting user time in clock ticks */
	     comp_t ac_stime;	/* accounting system time in clock ticks */
	     comp_t ac_etime;	/* accounting total elapsed time in clock
				   ticks */
	     comp_t ac_mem;	/* memory usage in clicks (pages) */
	     comp_t ac_io;	/* chars transferred by read/write */
	     comp_t ac_rw;	/* number of block reads/writes */
	     char   ac_comm[8]; /* command name */

	  * Accounting Flags

	 #define AFORK	 01    /* has executed fork, but no exec */
	 #define ASU	 02    /* used super-user privileges */
	 #define ACCTF	 0300  /* record type */
	 #define AEXPND	 040   /* Expanded Record Type − default */

       In ac_flag, the AFORK flag is turned on by each fork and turned off  by
       an  exec. The ac_comm field is inherited from the parent process and is
       reset by any exec. Each time the system	charges	 the  process  with  a
       clock  tick,  it also adds to ac_mem the current process size, computed
       as follows:

       (data size) + (text size) / (number of in-core processes using text)

       The value of ac_mem/(ac_stime+ac_utime) can be viewed as an  approxima‐
       tion to the mean process size, as modified by text sharing.

       The  structure  tacct,  (which  resides	with  the  source files of the
       accounting commands), represents a summary of accounting statistics for
       the  user  id ta_uid. This structure is used by the accounting commands
       to report  statistics based on user id.

	  *  total accounting (for acct period), also for day
	 struct tacct {
	    uid_t	    ta_uid;	  /* user id */
	    char	    ta_name[8];	  /* login name */
	    float	    ta_cpu[2];	  /* cum. cpu time in minutes, */
					  /* p/np (prime/non-prime time) */
	    float	    ta_kcore[2];  /* cum. kcore-minutes, p/np */
	    float	    ta_con[2];	  /* cum. connect time in minutes,
					      p/np */
	    float	    ta_du;	  /* cum. disk usage (blocks)*/
	    long	    ta_pc;	  /* count of processes */
	    unsigned short  ta_sc;	  /* count of login sessions */
	    unsigned short  ta_dc;	  /* count of disk samples */
	    unsigned short  ta_fee;	  /* fee for special services */

       The ta_cpu, ta_kcore, and ta_con members contain usage information per‐
       taining	to  prime time and non-prime time hours.  The first element in
       each array represents the time the  resource was used during prime time
       hours.	The  second  element  in   each	 array represents the time the
       resource was used during non-prime time hours.	Prime  time  and  non-
       prime time hours may be set in the  holidays file (see holidays(4)).

       The  ta_kcore  member  is  a cumulative measure of the amount of memory
       used over the accounting period by processes owned by the user with uid
       ta_uid.	The  amount shown represents kilobyte segments of memory used,
       per minute.

       The ta_con member represents the amount of time the user was logged  in
       to the system.

			     prime/non-prime time table

       acctcom(1),    acct(1M),	   acctcon(1M),	  acctmerg(1M),	  acctprc(1M),
       acctsh(1M), prtacct(1M), runacct(1M), shutacct(1M),  acct(2),  exec(2),

       The  ac_mem  value  for	a short-lived command gives little information
       about the actual size of the command, because ac_mem may be incremented
       while a different command (for example, the shell) is being executed by
       the process.

				 May 19, 1994			 ACCT.H(3HEAD)

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