[NTLUG:Discuss] let me try that again - time

[Chris Cox]

I must stand corrected as well... if you are using GNU time,
you have a ton of options:

        %E     Elapsed real time (in [hours:]minutes:seconds).

        %e     (Not in tcsh.) Elapsed real time (in seconds).

        %S     Total  number of CPU-seconds that the process spent
               in kernel mode.

        %U     Total number of CPU-seconds that the process  spent
               in user mode.

        %P     Percentage  of  the CPU that this job got, computed
               as (%U + %S) / %E.

        Memory

        %M     Maximum resident set size of the process during its
               lifetime, in Kbytes.

        %t     (Not  in  tcsh.)  Average  resident set size of the
               process, in Kbytes.

        %K     Average total (data+stack+text) memory use  of  the
               process, in Kbytes.

        %D     Average  size  of the process's unshared data area,
               in Kbytes.

        %p     (Not  in  tcsh.)  Average  size  of  the  process's
               unshared stack space, in Kbytes.

        %X     Average size of the process's shared text space, in
               Kbytes.

        %Z     (Not in tcsh.) System's page size, in bytes.   This
               is  a  per-system constant, but varies between sys­
               tems.

        %F     Number of major page faults that occurred while the
               process  was  running.   These are faults where the
               page has to be read in from disk.

        %R     Number  of  minor,  or  recoverable,  page  faults.
               These  are  faults for pages that are not valid but
               which have not yet been claimed  by  other  virtual
               pages.   Thus  the  data in the page is still valid
               but the system tables must be updated.

        %W     Number of times the process was swapped out of main
               memory.

        %c     Number  of  times  the process was context-switched
               involuntarily (because the time slice expired).

        %w     Number of waits: times that the  program  was  con­
               text-switched voluntarily, for instance while wait­
               ing for an I/O operation to complete.

        I/O

        %I     Number of file system inputs by the process.

        %O     Number of file system outputs by the process.

        %r     Number of socket messages received by the  process.

        %s     Number of socket messages sent by the process.

        %k     Number of signals delivered to the process.

        %C     (Not  in  tcsh.) Name and command line arguments of
               the command being timed.

        %x     (Not in tcsh.) Exit status of the command.