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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 | #!/usr/bin/perl -w # (c) 2010, Tom Zanussi <tzanussi@gmail.com> # Licensed under the terms of the GNU GPL License version 2 # read/write top # # Periodically displays system-wide r/w call activity, broken down by # pid. If an [interval] arg is specified, the display will be # refreshed every [interval] seconds. The default interval is 3 # seconds. 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; use POSIX qw/SIGALRM SA_RESTART/; my $default_interval = 3; my $nlines = 20; my $print_thread; my $print_pending = 0; my %reads; my %writes; my $interval = shift; if (!$interval) { $interval = $default_interval; } sub syscalls::sys_exit_read { my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs, $common_pid, $common_comm, $nr, $ret) = @_; print_check(); if ($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) = @_; print_check(); $reads{$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, $ret) = @_; print_check(); if ($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) = @_; print_check(); $writes{$common_pid}{bytes_written} += $count; $writes{$common_pid}{total_writes}++; $writes{$common_pid}{comm} = $common_comm; } sub trace_begin { my $sa = POSIX::SigAction->new(\&set_print_pending); $sa->flags(SA_RESTART); $sa->safe(1); POSIX::sigaction(SIGALRM, $sa) or die "Can't set SIGALRM handler: $!\n"; alarm 1; } sub trace_end { print_unhandled(); print_totals(); } sub print_check() { if ($print_pending == 1) { $print_pending = 0; print_totals(); } } sub set_print_pending() { $print_pending = 1; alarm $interval; } sub print_totals { my $count; $count = 0; clear_term(); printf("\nread counts by pid:\n\n"); printf("%6s %20s %10s %10s %10s\n", "pid", "comm", "# reads", "bytes_req", "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, $bytes_read); if (++$count == $nlines) { last; } } $count = 0; printf("\nwrite counts by pid:\n\n"); printf("%6s %20s %10s %13s\n", "pid", "comm", "# writes", "bytes_written"); printf("%6s %-20s %10s %13s\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 %13s\n", $pid, $comm, $total_writes, $bytes_written); if (++$count == $nlines) { last; } } %reads = (); %writes = (); } 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}++; } |