NAME

       hp2ps - convert a heap profile to a POSTSCRIPT graph

SYNOPSIS

       hp2ps [flags] [file][.hp]

DESCRIPTION

       The  program hp2ps converts a heap profile stored in file into a POSTSCRIPT graph, sending
       the result to file.ps.  By  convention,  files  to  be  processed  by  hp2ps  have  a  .hp
       extension.  However, for compatibility with older versions of hp2ps, this extension can be
       omitted. If file is omitted entirely, then the program behaves as a filter.

OPTIONS

       The flags are:

       -d     In order to make graphs more readable,  hp2ps  sorts  the  shaded  bands  for  each
              identifier.  The default sort ordering is for the bands with the largest area to be
              stacked on top of the smaller ones.  The -d  option  causes  rougher  bands  (those
              reprsenting series of values with the largest standard deviations) to be stacked on
              top of smoother ones.

       -b     Normally, hp2ps puts the title of the graph in a small box at the top of the  page.
              However,  if  the  JOB  string  is  too  long  to  fit in a small box (more than 35
              characters), then hp2ps will choose to use a big box instead. The -b option  forces
              hp2ps to use a big box.

       -e float[in|mm|pt]
              Generate  encapsulated  POSTSCRIPT  suitable  for  inclusion  in  LaTeX  documents.
              Usually, the POSTSCRIPT graph is drawn in landscape mode in an area 9  inches  wide
              by  6 inches high, and hp2ps arranges for this area to be approximately centered on
              a sheet of a4 paper. This format is convenient of studying the graph in detail, but
              it  is  unsuitable for inclusion in LaTeX documents. The -e option causes the graph
              to be  drawn  in  portrait  mode,  with  float  specifying  the  width  in  inches,
              millimetres or points (the default).  The resulting POSTSCRIPT file conforms to the
              Encapsulated Post Script (EPS) convention, and  it  can  be  included  in  a  LaTeX
              document  using  Rokicki's  dvi-to-POSTSCRIPT  converter dvips.  hp2ps requires the
              width to exceed 2 inches.

       -g     Create output suitable for the gs POSTSCRIPT previewer (or similar). In  this  case
              the graph is printed in portrait mode without scaling. The output is unsuitable for
              a laser printer.

       -p     Use previous parameters. By default, the POSTSCRIPT graph is  automatically  scaled
              both  horizontally  and  vertically  so  that  it  fills  the  page.  However, when
              preparing a seires of graphs for use in a presentation, it is often useful to  draw
              a  new  graph  using the same scale, shading and ordering as a previous one. The -p
              flag causes the graph to be drawn using the parameters determined by a previous run
              of hp2ps on file.

       -s     Use a small box for the title.

       -y     Draw the graph in the traditional York style, ignoring marks.

       -?     Print out usage information.

INPUT FORMAT

       The format of a heap profile is best described by example:

              JOB "a.out -p"
              DATE "Fri Apr 17 11:43:45 1992"
              SAMPLE_UNIT "seconds"
              VALUE_UNIT "bytes"
              BEGIN_SAMPLE 0.00
                SYSTEM 24
              END_SAMPLE 0.00
              BEGIN_SAMPLE 1.00
                elim 180
                insert 24
                intersect 12
                disin 60
                main 12
                reduce 20
                SYSTEM 12
              END_SAMPLE 1.00
              MARK 1.50
              MARK 1.75
              MARK 1.80
              BEGIN_SAMPLE 2.00
                elim 192
                insert 24
                intersect 12
                disin 84
                main 12
                SYSTEM 24
              END_SAMPLE 2.00
              BEGIN_SAMPLE 2.82
              END_SAMPLE 2.82

SEE ALSO

       dvips(1), latex(1), hbchp (1), lmlchp(1)
       C.  Runciman  and  D.  Wakeling,  Heap  Profiling  for Lazy Functional Languages, YCS-172,
       University of York, 1992

NOTES

       POSTSCRIPT is a registered trademark of Adobe Systems Incorporated.

AUTHOR

       David Wakeling of the University of York.

                                          18 April 1992                                  HP2PS(1)