rusage(1b) [sunos man page]
rusage(1B) SunOS/BSD Compatibility Package Commands rusage(1B) NAME
rusage - print resource usage for a command SYNOPSIS
/usr/ucb/rusage command DESCRIPTION
The rusage command is similar to time(1). It runs the given command, which must be specified; that is, command is not optional as it is in the C shell's timing facility. When the command is complete, rusage displays the real (wall clock), the system CPU, and the user CPU times which elapsed during execution of the command, plus other fields in the rusage structure, all on one long line. Times are reported in sec- onds and hundredths of a second. EXAMPLES
Example 1: The format of rusage output The example below shows the format of rusage output. example% rusage wc /usr/share/man/man1/csh(1) 3045 13423 78071 /usr/share/man/man1/csh(1) 2.26 real 0.80 user 0.36 sys 11 pf 38 pr 0 sw 11 rb 0 wb 16 vcx 37 icx 24 mx 0 ix 1230 id 9 is example% Each of the fields identified corresponds to an element of the rusage structure, as described in getrusage(3C), as follows: real elapsed real time user ru_utime user time used sys ru_stime system time used pf ru_majflt page faults requiring physical I/O pr ru_minflt page faults not requiring physical I/O sw ru_nswap swaps rb ru_inblock block input operations wb ru_oublock block output operations vcx ru_nvcsw voluntary context switches icx ru_nivcsw involuntary context switches mx ru_maxrss maximum resident set size ix ru_ixrss currently 0 id ru_idrss integral resident set size is ru_isrss currently 0 ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), time(1), getrusage(3C), attributes(5) BUGS
When the command being timed is interrupted, the timing values displayed may be inaccurate. SunOS 5.10 14 Sep 1992 rusage(1B)
Check Out this Related Man Page
GETRUSAGE(2) BSD System Calls Manual GETRUSAGE(2) NAME
getrusage -- get information about resource utilization SYNOPSIS
#include <sys/resource.h> #define RUSAGE_SELF 0 #define RUSAGE_CHILDREN -1 int getrusage(int who, struct rusage *r_usage); DESCRIPTION
getrusage() returns information describing the resources utilized by the current process, or all its terminated child processes. The who parameter is either RUSAGE_SELF or RUSAGE_CHILDREN. The buffer to which r_usage points will be filled in with the following structure: struct rusage { struct timeval ru_utime; /* user time used */ struct timeval ru_stime; /* system time used */ long ru_maxrss; /* max resident set size */ long ru_ixrss; /* integral shared text memory size */ long ru_idrss; /* integral unshared data size */ long ru_isrss; /* integral unshared stack size */ long ru_minflt; /* page reclaims */ long ru_majflt; /* page faults */ long ru_nswap; /* swaps */ long ru_inblock; /* block input operations */ long ru_oublock; /* block output operations */ long ru_msgsnd; /* messages sent */ long ru_msgrcv; /* messages received */ long ru_nsignals; /* signals received */ long ru_nvcsw; /* voluntary context switches */ long ru_nivcsw; /* involuntary context switches */ }; The fields are interpreted as follows: ru_utime the total amount of time spent executing in user mode. ru_stime the total amount of time spent in the system executing on behalf of the process(es). ru_maxrss the maximum resident set size utilized (in bytes). ru_ixrss an integral value indicating the amount of memory used by the text segment that was also shared among other processes. This value is expressed in units of kilobytes * ticks-of-execution. ru_idrss an integral value of the amount of unshared memory residing in the data segment of a process (expressed in units of kilobytes * ticks-of-execution). ru_isrss an integral value of the amount of unshared memory residing in the stack segment of a process (expressed in units of kilobytes * ticks-of-execution). ru_minflt the number of page faults serviced without any I/O activity; here I/O activity is avoided by reclaiming a page frame from the list of pages awaiting reallocation. ru_majflt the number of page faults serviced that required I/O activity. ru_nswap the number of times a process was swapped out of main memory. ru_inblock the number of times the file system had to perform input. ru_oublock the number of times the file system had to perform output. ru_msgsnd the number of IPC messages sent. ru_msgrcv the number of IPC messages received. ru_nsignals the number of signals delivered. ru_nvcsw the number of times a context switch resulted due to a process voluntarily giving up the processor before its time slice was completed (usually to await availability of a resource). ru_nivcsw the number of times a context switch resulted due to a higher priority process becoming runnable or because the current process exceeded its time slice. NOTES
The numbers ru_inblock and ru_oublock account only for real I/O; data supplied by the caching mechanism is charged only to the first process to read or write the data. RETURN VALUES
The getrusage() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indi- cate the error. ERRORS
The getrusage() system call will fail if: [EFAULT] The address specified by the r_usage parameter is not in a valid part of the process address space. [EINVAL] The who parameter is not a valid value. LEGACY SYNOPSIS
#include <sys/time.h> #include <sys/resource.h> The include file <sys/time.h> is necessary. SEE ALSO
gettimeofday(2), wait(2), compat(5) BUGS
There is no way to obtain information about a child process that has not yet terminated. HISTORY
The getrusage() function call appeared in 4.2BSD. 4th Berkeley Distribution June 4, 1993 4th Berkeley Distribution