summaryrefslogtreecommitdiffstats
path: root/tools/perf/scripts/perl/rw-by-pid.pl
blob: 9db23c9daf5552d9159a093bf14381750cb71ac7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
#!/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{$b}{bytes_read} || 0) <=>
				($reads{$a}{bytes_read} || 0) } keys %reads) {
	my $comm = $reads{$pid}{comm} || "";
	my $total_reads = $reads{$pid}{total_reads} || 0;
	my $bytes_requested = $reads{$pid}{bytes_requested} || 0;
	my $bytes_read = $reads{$pid}{bytes_read} || 0;

	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", "------", "--------------------",
	   "------", "----------");

    my @errcounts = ();

    foreach my $pid (keys %reads) {
	foreach my $error (keys %{$reads{$pid}{errors}}) {
	    my $comm = $reads{$pid}{comm} || "";
	    my $errcount = $reads{$pid}{errors}{$error} || 0;
	    push @errcounts, [$pid, $comm, $error, $errcount];
	}
    }

    @errcounts = sort { $b->[3] <=> $a->[3] } @errcounts;

    for my $i (0 .. $#errcounts) {
	printf("%6d  %-20s  %6d  %10s\n", $errcounts[$i][0],
	       $errcounts[$i][1], $errcounts[$i][2], $errcounts[$i][3]);
    }

    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{$b}{bytes_written} || 0) <=>
			($writes{$a}{bytes_written} || 0)} keys %writes) {
	my $comm = $writes{$pid}{comm} || "";
	my $total_writes = $writes{$pid}{total_writes} || 0;
	my $bytes_written = $writes{$pid}{bytes_written} || 0;

	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", "------", "--------------------",
	   "------", "----------");

    @errcounts = ();

    foreach my $pid (keys %writes) {
	foreach my $error (keys %{$writes{$pid}{errors}}) {
	    my $comm = $writes{$pid}{comm} || "";
	    my $errcount = $writes{$pid}{errors}{$error} || 0;
	    push @errcounts, [$pid, $comm, $error, $errcount];
	}
    }

    @errcounts = sort { $b->[3] <=> $a->[3] } @errcounts;

    for my $i (0 .. $#errcounts) {
	printf("%6d  %-20s  %6d  %10s\n", $errcounts[$i][0],
	       $errcounts[$i][1], $errcounts[$i][2], $errcounts[$i][3]);
    }

    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}++;
}