OSCL-LXR linux-6.0.1/​tools/​perf/​scripts/​perl/​rw-by-pid.pl	Source navigation Diff markup Identifier search General search
	Version: linux-6.0.1 spark-3.0.0 hadoop-3.2.0-src hadoop-3.3.0-src spark-2.4.7 linux-4.15.13 hadoop-2.7.4-src Revert   Change

 #!/usr/bin/perl -w
 # SPDX-License-Identifier: GPL-2.0-only
 # (c) 2009, Tom Zanussi <tzanussi@gmail.com>
 
 # 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, $common_callchain,
     $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, $common_callchain,
     $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, $common_callchain,
     $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, $common_callchain,
     $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, $common_callchain) = @_;
 
     $unhandled{$event_name}++;
 }

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