[svn-r27775] Undo of r27655

Removes .pl extension from Perl scripts. This may be returned in the future,
but it's best to keep the script names unchanged while we merge with the
trunk.

Tested on: h5committest

1 files changed, 99 insertions, 0 deletions

diff --git a/bin/iostats b/bin/iostats
new file mode 100755
index 0000000..f57c0d0
--- /dev/null
+++ b/bin/iostats
@@ -0,0 +1,99 @@
+#!/usr/bin/perl
+#
+# Copyright by The HDF Group.
+# Copyright by the Board of Trustees of the University of Illinois.
+# All rights reserved.
+#
+# This file is part of HDF5.  The full HDF5 copyright notice, including
+# terms governing use, modification, and redistribution, is contained in
+# the files COPYING and Copyright.html.  COPYING can be found at the root
+# of the source code distribution tree; Copyright.html can be found at the
+# root level of an installed copy of the electronic HDF5 document set and
+# is linked from the top-level documents page.  It can also be found at
+# http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have
+# access to either file, you may request a copy from help@hdfgroup.org.
+#
+
+# Usage: pipe the output of Linux's `strace' program into the stdin of
+# this command, and the output of this command into gnuplot.
+
+my ($fast,$npasses);
+if ($ARGV[0] =~ /^--?fast$/) {
+  $fast = 1;
+  shift;
+}
+
+my $filename = shift || "tstab2.h5";
+my $total = 0;
+my %What;			# What{pos}{nbytes}{r|w} = naccesses
+my($total_writes, $total_bytes_out, $total_reads, $total_bytes_in);
+
+while (<>) {
+  if (!defined $fd) {
+    if (/^open\("(.*?)".*=\s+(\d+)/ && $1 eq $filename) {
+      $fd = $2;
+      $pos = 0;
+    }
+  } elsif (/^close\((\d+)/ && $1==$fd) {
+    $fd = undef;
+  } elsif (!$fast &&
+	   /^lseek\((\d+), -?\d+,.*= (\d+)/ &&
+	   $1==$fd && $2>=0) {
+    $pos = $2;
+  } elsif (!$fast && /^lseek\((\d+),/ && $1==$fd) {
+    die $_;
+  } elsif (/^write\((\d+), ".*?"(\.\.\.)?, \d+\)\s*= (\d+)/ &&
+	   $1==$fd && $3>=0) {
+    my $nbytes = $3;
+    if ($fast) {
+      $total_writes++;
+      $total_bytes_out += $nbytes;
+    } else {
+      $What{$pos}{$nbytes}{w}++;
+      printf "%d %d\n", $total, $pos;
+      $pos += $nbytes;
+      $total += $nbytes;
+    }
+  } elsif (/^write\((\d+),/ && $1==$fd) {
+    die $_;
+  } elsif (/^read\((\d+), ".*?"(\.\.\.)?, \d+\)\s*= (\d+)/ &&
+	   $1==$fd && $3>=0) {
+    my $nbytes = $3;
+    if ($fast) {
+      $total_reads++;
+      $total_bytes_in += $nbytes;
+    } else {
+      $What{$pos}{$nbytes}{r}++;
+      printf "%d %d\n", $total, $pos;
+      $pos += $nbytes;
+      $total += $nbytes;
+    }
+  } elsif (/^read\((\d+),/ && $1==$fd) {
+    die $_;
+  }
+}
+     
+
+if (!$fast) {
+  print "="x36, "\n"; 
+  printf "%8s %8s %8s %8s\n","Position","NBytes","NReads","NWrites";
+  for $pos (sort {$a<=>$b} keys %What) {
+    for $nbytes (sort {$a<=>$b} keys %{$What{$pos}}) {
+      printf("%8d %8d %8d %8d\n", $pos, $nbytes,
+	     $What{$pos}{$nbytes}{r},
+	     $What{$pos}{$nbytes}{w});
+      $total_writes += $What{$pos}{$nbytes}{w};
+      $total_reads  += $What{$pos}{$nbytes}{r};
+      $total_bytes_out += $What{$pos}{$nbytes}{w} * $nbytes;
+      $total_bytes_in  += $What{$pos}{$nbytes}{r} * $nbytes;
+    }
+  }
+}
+
+print "="x36, "\n";
+printf("Write: %8d calls, %10d total bytes, %10g average bytes\n",
+       $total_writes, $total_bytes_out, $total_bytes_out/$total_writes)
+  if $total_writes;
+printf("Read:  %8d calls, %10d total bytes, %10g average bytes\n",
+       $total_reads, $total_bytes_in, $total_bytes_in/$total_reads)
+  if $total_reads;