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1#!/usr/bin/perl -w2# SPDX-License-Identifier: GPL-2.0-only3# (c) 2009, Tom Zanussi <tzanussi@gmail.com>4 5# Display r/w activity for all processes6 7# The common_* event handler fields are the most useful fields common to8# all events. They don't necessarily correspond to the 'common_*' fields9# in the status files. Those fields not available as handler params can10# be retrieved via script functions of the form get_common_*().11 12use 5.010000;13use strict;14use warnings;15 16use lib "$ENV{'PERF_EXEC_PATH'}/scripts/perl/Perf-Trace-Util/lib";17use lib "./Perf-Trace-Util/lib";18use Perf::Trace::Core;19use Perf::Trace::Util;20 21my %reads;22my %writes;23 24sub syscalls::sys_exit_read25{26 my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,27 $common_pid, $common_comm, $common_callchain,28 $nr, $ret) = @_;29 30 if ($ret > 0) {31 $reads{$common_pid}{bytes_read} += $ret;32 } else {33 if (!defined ($reads{$common_pid}{bytes_read})) {34 $reads{$common_pid}{bytes_read} = 0;35 }36 $reads{$common_pid}{errors}{$ret}++;37 }38}39 40sub syscalls::sys_enter_read41{42 my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,43 $common_pid, $common_comm, $common_callchain,44 $nr, $fd, $buf, $count) = @_;45 46 $reads{$common_pid}{bytes_requested} += $count;47 $reads{$common_pid}{total_reads}++;48 $reads{$common_pid}{comm} = $common_comm;49}50 51sub syscalls::sys_exit_write52{53 my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,54 $common_pid, $common_comm, $common_callchain,55 $nr, $ret) = @_;56 57 if ($ret <= 0) {58 $writes{$common_pid}{errors}{$ret}++;59 }60}61 62sub syscalls::sys_enter_write63{64 my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,65 $common_pid, $common_comm, $common_callchain,66 $nr, $fd, $buf, $count) = @_;67 68 $writes{$common_pid}{bytes_written} += $count;69 $writes{$common_pid}{total_writes}++;70 $writes{$common_pid}{comm} = $common_comm;71}72 73sub trace_end74{75 printf("read counts by pid:\n\n");76 77 printf("%6s %20s %10s %10s %10s\n", "pid", "comm",78 "# reads", "bytes_requested", "bytes_read");79 printf("%6s %-20s %10s %10s %10s\n", "------", "--------------------",80 "-----------", "----------", "----------");81 82 foreach my $pid (sort { ($reads{$b}{bytes_read} || 0) <=>83 ($reads{$a}{bytes_read} || 0) } keys %reads) {84 my $comm = $reads{$pid}{comm} || "";85 my $total_reads = $reads{$pid}{total_reads} || 0;86 my $bytes_requested = $reads{$pid}{bytes_requested} || 0;87 my $bytes_read = $reads{$pid}{bytes_read} || 0;88 89 printf("%6s %-20s %10s %10s %10s\n", $pid, $comm,90 $total_reads, $bytes_requested, $bytes_read);91 }92 93 printf("\nfailed reads by pid:\n\n");94 95 printf("%6s %20s %6s %10s\n", "pid", "comm", "error #", "# errors");96 printf("%6s %20s %6s %10s\n", "------", "--------------------",97 "------", "----------");98 99 my @errcounts = ();100 101 foreach my $pid (keys %reads) {102 foreach my $error (keys %{$reads{$pid}{errors}}) {103 my $comm = $reads{$pid}{comm} || "";104 my $errcount = $reads{$pid}{errors}{$error} || 0;105 push @errcounts, [$pid, $comm, $error, $errcount];106 }107 }108 109 @errcounts = sort { $b->[3] <=> $a->[3] } @errcounts;110 111 for my $i (0 .. $#errcounts) {112 printf("%6d %-20s %6d %10s\n", $errcounts[$i][0],113 $errcounts[$i][1], $errcounts[$i][2], $errcounts[$i][3]);114 }115 116 printf("\nwrite counts by pid:\n\n");117 118 printf("%6s %20s %10s %10s\n", "pid", "comm",119 "# writes", "bytes_written");120 printf("%6s %-20s %10s %10s\n", "------", "--------------------",121 "-----------", "----------");122 123 foreach my $pid (sort { ($writes{$b}{bytes_written} || 0) <=>124 ($writes{$a}{bytes_written} || 0)} keys %writes) {125 my $comm = $writes{$pid}{comm} || "";126 my $total_writes = $writes{$pid}{total_writes} || 0;127 my $bytes_written = $writes{$pid}{bytes_written} || 0;128 129 printf("%6s %-20s %10s %10s\n", $pid, $comm,130 $total_writes, $bytes_written);131 }132 133 printf("\nfailed writes by pid:\n\n");134 135 printf("%6s %20s %6s %10s\n", "pid", "comm", "error #", "# errors");136 printf("%6s %20s %6s %10s\n", "------", "--------------------",137 "------", "----------");138 139 @errcounts = ();140 141 foreach my $pid (keys %writes) {142 foreach my $error (keys %{$writes{$pid}{errors}}) {143 my $comm = $writes{$pid}{comm} || "";144 my $errcount = $writes{$pid}{errors}{$error} || 0;145 push @errcounts, [$pid, $comm, $error, $errcount];146 }147 }148 149 @errcounts = sort { $b->[3] <=> $a->[3] } @errcounts;150 151 for my $i (0 .. $#errcounts) {152 printf("%6d %-20s %6d %10s\n", $errcounts[$i][0],153 $errcounts[$i][1], $errcounts[$i][2], $errcounts[$i][3]);154 }155 156 print_unhandled();157}158 159my %unhandled;160 161sub print_unhandled162{163 if ((scalar keys %unhandled) == 0) {164 return;165 }166 167 print "\nunhandled events:\n\n";168 169 printf("%-40s %10s\n", "event", "count");170 printf("%-40s %10s\n", "----------------------------------------",171 "-----------");172 173 foreach my $event_name (keys %unhandled) {174 printf("%-40s %10d\n", $event_name, $unhandled{$event_name});175 }176}177 178sub trace_unhandled179{180 my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs,181 $common_pid, $common_comm, $common_callchain) = @_;182 183 $unhandled{$event_name}++;184}185