perf trace: Add perf trace scripting support modules for Perl

[safe/jmp/linux-2.6] / tools / perf / scripts / perl / rw-by-pid.pl

diff --git a/tools/perf/scripts/perl/rw-by-pid.pl b/tools/perf/scripts/perl/rw-by-pid.pl
new file mode 100644 (file)
index 0000000..da601fa
--- /dev/null
+++ b/tools/perf/scripts/perl/rw-by-pid.pl
@@ -0,0 +1,170 @@
+#!/usr/bin/perl -w
+# (c) 2009, Tom Zanussi <tzanussi@gmail.com>
+# Licensed under the terms of the GNU GPL License version 2
+
+# Display r/w activity for all processes
+
+# The common_* event handler fields are the most useful fields common to
+# all events.  They don't necessarily correspond to the 'common_*' fields
+# in the status files.  Those fields not available as handler params can
+# be retrieved via script functions of the form get_common_*().
+
+use 5.010000;
+use strict;
+use warnings;
+
+use lib "$ENV{'PERF_EXEC_PATH'}/scripts/perl/Perf-Trace-Util/lib";
+use lib "./Perf-Trace-Util/lib";
+use Perf::Trace::Core;
+use Perf::Trace::Util;
+
+my %reads;
+my %writes;
+
+sub syscalls::sys_exit_read
+{
+    my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
+       $common_pid, $common_comm,
+       $nr, $ret) = @_;
+
+    if ($ret > 0) {
+       $reads{$common_pid}{bytes_read} += $ret;
+    } else {
+       if (!defined ($reads{$common_pid}{bytes_read})) {
+           $reads{$common_pid}{bytes_read} = 0;
+       }
+       $reads{$common_pid}{errors}{$ret}++;
+    }
+}
+
+sub syscalls::sys_enter_read
+{
+    my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
+       $common_pid, $common_comm,
+       $nr, $fd, $buf, $count) = @_;
+
+    $reads{$common_pid}{bytes_requested} += $count;
+    $reads{$common_pid}{total_reads}++;
+    $reads{$common_pid}{comm} = $common_comm;
+}
+
+sub syscalls::sys_exit_write
+{
+    my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
+       $common_pid, $common_comm,
+       $nr, $ret) = @_;
+
+    if ($ret <= 0) {
+       $writes{$common_pid}{errors}{$ret}++;
+    }
+}
+
+sub syscalls::sys_enter_write
+{
+    my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
+       $common_pid, $common_comm,
+       $nr, $fd, $buf, $count) = @_;
+
+    $writes{$common_pid}{bytes_written} += $count;
+    $writes{$common_pid}{total_writes}++;
+    $writes{$common_pid}{comm} = $common_comm;
+}
+
+sub trace_end
+{
+    printf("read counts by pid:\n\n");
+
+    printf("%6s  %20s  %10s  %10s  %10s\n", "pid", "comm",
+          "# reads", "bytes_requested", "bytes_read");
+    printf("%6s  %-20s  %10s  %10s  %10s\n", "------", "--------------------",
+          "-----------", "----------", "----------");
+
+    foreach my $pid (sort {$reads{$b}{bytes_read} <=>
+                              $reads{$a}{bytes_read}} keys %reads) {
+       my $comm = $reads{$pid}{comm};
+       my $total_reads = $reads{$pid}{total_reads};
+       my $bytes_requested = $reads{$pid}{bytes_requested};
+       my $bytes_read = $reads{$pid}{bytes_read};
+
+       printf("%6s  %-20s  %10s  %10s  %10s\n", $pid, $comm,
+              $total_reads, $bytes_requested, $bytes_read);
+    }
+
+    printf("\nfailed reads by pid:\n\n");
+
+    printf("%6s  %20s  %6s  %10s\n", "pid", "comm", "error #", "# errors");
+    printf("%6s  %20s  %6s  %10s\n", "------", "--------------------",
+          "------", "----------");
+
+    foreach my $pid (keys %reads) {
+       my $comm = $reads{$pid}{comm};
+       foreach my $err (sort {$reads{$b}{comm} cmp $reads{$a}{comm}}
+                        keys %{$reads{$pid}{errors}}) {
+           my $errors = $reads{$pid}{errors}{$err};
+
+           printf("%6d  %-20s  %6d  %10s\n", $pid, $comm, $err, $errors);
+       }
+    }
+
+    printf("\nwrite counts by pid:\n\n");
+
+    printf("%6s  %20s  %10s  %10s\n", "pid", "comm",
+          "# writes", "bytes_written");
+    printf("%6s  %-20s  %10s  %10s\n", "------", "--------------------",
+          "-----------", "----------");
+
+    foreach my $pid (sort {$writes{$b}{bytes_written} <=>
+                              $writes{$a}{bytes_written}} keys %writes) {
+       my $comm = $writes{$pid}{comm};
+       my $total_writes = $writes{$pid}{total_writes};
+       my $bytes_written = $writes{$pid}{bytes_written};
+
+       printf("%6s  %-20s  %10s  %10s\n", $pid, $comm,
+              $total_writes, $bytes_written);
+    }
+
+    printf("\nfailed writes by pid:\n\n");
+
+    printf("%6s  %20s  %6s  %10s\n", "pid", "comm", "error #", "# errors");
+    printf("%6s  %20s  %6s  %10s\n", "------", "--------------------",
+          "------", "----------");
+
+    foreach my $pid (keys %writes) {
+       my $comm = $writes{$pid}{comm};
+       foreach my $err (sort {$writes{$b}{comm} cmp $writes{$a}{comm}}
+                        keys %{$writes{$pid}{errors}}) {
+           my $errors = $writes{$pid}{errors}{$err};
+
+           printf("%6d  %-20s  %6d  %10s\n", $pid, $comm, $err, $errors);
+       }
+    }
+
+    print_unhandled();
+}
+
+my %unhandled;
+
+sub print_unhandled
+{
+    if ((scalar keys %unhandled) == 0) {
+       return;
+    }
+
+    print "\nunhandled events:\n\n";
+
+    printf("%-40s  %10s\n", "event", "count");
+    printf("%-40s  %10s\n", "----------------------------------------",
+          "-----------");
+
+    foreach my $event_name (keys %unhandled) {
+       printf("%-40s  %10d\n", $event_name, $unhandled{$event_name});
+    }
+}
+
+sub trace_unhandled
+{
+    my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,
+       $common_pid, $common_comm) = @_;
+
+    $unhandled{$event_name}++;
+}