mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
106 lines
2.9 KiB
106 lines
2.9 KiB
#!/usr/bin/perl -w |
|
# SPDX-License-Identifier: GPL-2.0-only |
|
# (c) 2009, Tom Zanussi <[email protected]> |
|
|
|
# Display r/w activity for files read/written to for a given program |
|
|
|
# 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 $usage = "perf script -s rw-by-file.pl <comm>\n"; |
|
|
|
my $for_comm = shift or die $usage; |
|
|
|
my %reads; |
|
my %writes; |
|
|
|
sub syscalls::sys_enter_read |
|
{ |
|
my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs, |
|
$common_pid, $common_comm, $common_callchain, $nr, $fd, $buf, $count) = @_; |
|
|
|
if ($common_comm eq $for_comm) { |
|
$reads{$fd}{bytes_requested} += $count; |
|
$reads{$fd}{total_reads}++; |
|
} |
|
} |
|
|
|
sub syscalls::sys_enter_write |
|
{ |
|
my ($event_name, $context, $common_cpu, $common_secs, $common_nsecs, |
|
$common_pid, $common_comm, $common_callchain, $nr, $fd, $buf, $count) = @_; |
|
|
|
if ($common_comm eq $for_comm) { |
|
$writes{$fd}{bytes_written} += $count; |
|
$writes{$fd}{total_writes}++; |
|
} |
|
} |
|
|
|
sub trace_end |
|
{ |
|
printf("file read counts for $for_comm:\n\n"); |
|
|
|
printf("%6s %10s %10s\n", "fd", "# reads", "bytes_requested"); |
|
printf("%6s %10s %10s\n", "------", "----------", "-----------"); |
|
|
|
foreach my $fd (sort {$reads{$b}{bytes_requested} <=> |
|
$reads{$a}{bytes_requested}} keys %reads) { |
|
my $total_reads = $reads{$fd}{total_reads}; |
|
my $bytes_requested = $reads{$fd}{bytes_requested}; |
|
printf("%6u %10u %10u\n", $fd, $total_reads, $bytes_requested); |
|
} |
|
|
|
printf("\nfile write counts for $for_comm:\n\n"); |
|
|
|
printf("%6s %10s %10s\n", "fd", "# writes", "bytes_written"); |
|
printf("%6s %10s %10s\n", "------", "----------", "-----------"); |
|
|
|
foreach my $fd (sort {$writes{$b}{bytes_written} <=> |
|
$writes{$a}{bytes_written}} keys %writes) { |
|
my $total_writes = $writes{$fd}{total_writes}; |
|
my $bytes_written = $writes{$fd}{bytes_written}; |
|
printf("%6u %10u %10u\n", $fd, $total_writes, $bytes_written); |
|
} |
|
|
|
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}++; |
|
} |
|
|
|
|
|
|