Skip to content

Commit

Permalink
mm: trace-vmscan-postprocess.pl: report the number of file/anon pages…
Browse files Browse the repository at this point in the history 
… respectively

Until now, the reporting from trace-vmscan-postprocess.pl is not very
useful because we cannot directly use this script for checking the
file/anon ratio of scanning.  This patch aims to report respectively the
number of file/anon pages which were scanned/reclaimed by kswapd or
direct-reclaim.  Sample output is usually something like the following.

Summary
Direct reclaims:                          8823
Direct reclaim pages scanned:             2438797
Direct reclaim file pages scanned:        1315200
Direct reclaim anon pages scanned:        1123597
Direct reclaim pages reclaimed:           446139
Direct reclaim file pages reclaimed:      378668
Direct reclaim anon pages reclaimed:      67471
Direct reclaim write file sync I/O:       0
Direct reclaim write anon sync I/O:       0
Direct reclaim write file async I/O:      0
Direct reclaim write anon async I/O:      4240
Wake kswapd requests:                     122310
Time stalled direct reclaim:              13.78 seconds

Kswapd wakeups:                           25817
Kswapd pages scanned:                     170779115
Kswapd file pages scanned:                162725123
Kswapd anon pages scanned:                8053992
Kswapd pages reclaimed:                   129065738
Kswapd file pages reclaimed:              128500930
Kswapd anon pages reclaimed:              564808
Kswapd reclaim write file sync I/O:       0
Kswapd reclaim write anon sync I/O:       0
Kswapd reclaim write file async I/O:      36
Kswapd reclaim write anon async I/O:      730730
Time kswapd awake:                        1015.50 seconds

Signed-off-by: Chen Yucong <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Johannes Weiner <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
  • Loading branch information
@lomips @torvalds
lomips authored and torvalds committed Aug 7, 2014
1 parent d0480be commit 2c51856
Showing 1 changed file with 53 additions and 0 deletions.
53 changes: 53 additions & 0 deletions Documentation/trace/postprocess/trace-vmscan-postprocess.pl
View file
Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,10 @@
use constant HIGH_NR_SCANNED => 22;
use constant HIGH_NR_TAKEN => 23;
use constant HIGH_NR_RECLAIMED => 24;
use constant HIGH_NR_FILE_SCANNED => 25;
use constant HIGH_NR_ANON_SCANNED => 26;
use constant HIGH_NR_FILE_RECLAIMED => 27;
use constant HIGH_NR_ANON_RECLAIMED => 28;

my %perprocesspid;
my %perprocess;
Expand All @@ -56,14 +60,18 @@

my $total_wakeup_kswapd;
my ($total_direct_reclaim, $total_direct_nr_scanned);
my ($total_direct_nr_file_scanned, $total_direct_nr_anon_scanned);
my ($total_direct_latency, $total_kswapd_latency);
my ($total_direct_nr_reclaimed);
my ($total_direct_nr_file_reclaimed, $total_direct_nr_anon_reclaimed);
my ($total_direct_writepage_file_sync, $total_direct_writepage_file_async);
my ($total_direct_writepage_anon_sync, $total_direct_writepage_anon_async);
my ($total_kswapd_nr_scanned, $total_kswapd_wake);
my ($total_kswapd_nr_file_scanned, $total_kswapd_nr_anon_scanned);
my ($total_kswapd_writepage_file_sync, $total_kswapd_writepage_file_async);
my ($total_kswapd_writepage_anon_sync, $total_kswapd_writepage_anon_async);
my ($total_kswapd_nr_reclaimed);
my ($total_kswapd_nr_file_reclaimed, $total_kswapd_nr_anon_reclaimed);

# Catch sigint and exit on request
my $sigint_report = 0;
Expand Down Expand Up @@ -374,6 +382,7 @@ sub process_events {
}
my $isolate_mode = $1;
my $nr_scanned = $4;
my $file = $6;

# To closer match vmstat scanning statistics, only count isolate_both
# and isolate_inactive as scanning. isolate_active is rotation
Expand All @@ -382,6 +391,11 @@ sub process_events {
# isolate_both == 3
if ($isolate_mode != 2) {
$perprocesspid{$process_pid}->{HIGH_NR_SCANNED} += $nr_scanned;
if ($file == 1) {
$perprocesspid{$process_pid}->{HIGH_NR_FILE_SCANNED} += $nr_scanned;
} else {
$perprocesspid{$process_pid}->{HIGH_NR_ANON_SCANNED} += $nr_scanned;
}
}
} elsif ($tracepoint eq "mm_vmscan_lru_shrink_inactive") {
$details = $6;
Expand All @@ -391,8 +405,19 @@ sub process_events {
print " $regex_lru_shrink_inactive/o\n";
next;
}

my $nr_reclaimed = $4;
my $flags = $6;
my $file = 0;
if ($flags =~ /RECLAIM_WB_FILE/) {
$file = 1;
}
$perprocesspid{$process_pid}->{HIGH_NR_RECLAIMED} += $nr_reclaimed;
if ($file) {
$perprocesspid{$process_pid}->{HIGH_NR_FILE_RECLAIMED} += $nr_reclaimed;
} else {
$perprocesspid{$process_pid}->{HIGH_NR_ANON_RECLAIMED} += $nr_reclaimed;
}
} elsif ($tracepoint eq "mm_vmscan_writepage") {
$details = $6;
if ($details !~ /$regex_writepage/o) {
Expand Down Expand Up @@ -493,7 +518,11 @@ sub dump_stats {
$total_direct_reclaim += $stats{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN};
$total_wakeup_kswapd += $stats{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD};
$total_direct_nr_scanned += $stats{$process_pid}->{HIGH_NR_SCANNED};
$total_direct_nr_file_scanned += $stats{$process_pid}->{HIGH_NR_FILE_SCANNED};
$total_direct_nr_anon_scanned += $stats{$process_pid}->{HIGH_NR_ANON_SCANNED};
$total_direct_nr_reclaimed += $stats{$process_pid}->{HIGH_NR_RECLAIMED};
$total_direct_nr_file_reclaimed += $stats{$process_pid}->{HIGH_NR_FILE_RECLAIMED};
$total_direct_nr_anon_reclaimed += $stats{$process_pid}->{HIGH_NR_ANON_RECLAIMED};
$total_direct_writepage_file_sync += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC};
$total_direct_writepage_anon_sync += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC};
$total_direct_writepage_file_async += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC};
Expand All @@ -513,7 +542,11 @@ sub dump_stats {
$stats{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN},
$stats{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD},
$stats{$process_pid}->{HIGH_NR_SCANNED},
$stats{$process_pid}->{HIGH_NR_FILE_SCANNED},
$stats{$process_pid}->{HIGH_NR_ANON_SCANNED},
$stats{$process_pid}->{HIGH_NR_RECLAIMED},
$stats{$process_pid}->{HIGH_NR_FILE_RECLAIMED},
$stats{$process_pid}->{HIGH_NR_ANON_RECLAIMED},
$stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC} + $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC},
$stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC} + $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC},
$this_reclaim_delay / 1000);
Expand Down Expand Up @@ -552,7 +585,11 @@ sub dump_stats {

$total_kswapd_wake += $stats{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE};
$total_kswapd_nr_scanned += $stats{$process_pid}->{HIGH_NR_SCANNED};
$total_kswapd_nr_file_scanned += $stats{$process_pid}->{HIGH_NR_FILE_SCANNED};
$total_kswapd_nr_anon_scanned += $stats{$process_pid}->{HIGH_NR_ANON_SCANNED};
$total_kswapd_nr_reclaimed += $stats{$process_pid}->{HIGH_NR_RECLAIMED};
$total_kswapd_nr_file_reclaimed += $stats{$process_pid}->{HIGH_NR_FILE_RECLAIMED};
$total_kswapd_nr_anon_reclaimed += $stats{$process_pid}->{HIGH_NR_ANON_RECLAIMED};
$total_kswapd_writepage_file_sync += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC};
$total_kswapd_writepage_anon_sync += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC};
$total_kswapd_writepage_file_async += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC};
Expand All @@ -563,7 +600,11 @@ sub dump_stats {
$stats{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE},
$stats{$process_pid}->{HIGH_KSWAPD_REWAKEUP},
$stats{$process_pid}->{HIGH_NR_SCANNED},
$stats{$process_pid}->{HIGH_NR_FILE_SCANNED},
$stats{$process_pid}->{HIGH_NR_ANON_SCANNED},
$stats{$process_pid}->{HIGH_NR_RECLAIMED},
$stats{$process_pid}->{HIGH_NR_FILE_RECLAIMED},
$stats{$process_pid}->{HIGH_NR_ANON_RECLAIMED},
$stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC} + $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC},
$stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC} + $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC});

Expand Down Expand Up @@ -594,7 +635,11 @@ sub dump_stats {
print "\nSummary\n";
print "Direct reclaims: $total_direct_reclaim\n";
print "Direct reclaim pages scanned: $total_direct_nr_scanned\n";
print "Direct reclaim file pages scanned: $total_direct_nr_file_scanned\n";
print "Direct reclaim anon pages scanned: $total_direct_nr_anon_scanned\n";
print "Direct reclaim pages reclaimed: $total_direct_nr_reclaimed\n";
print "Direct reclaim file pages reclaimed: $total_direct_nr_file_reclaimed\n";
print "Direct reclaim anon pages reclaimed: $total_direct_nr_anon_reclaimed\n";
print "Direct reclaim write file sync I/O: $total_direct_writepage_file_sync\n";
print "Direct reclaim write anon sync I/O: $total_direct_writepage_anon_sync\n";
print "Direct reclaim write file async I/O: $total_direct_writepage_file_async\n";
Expand All @@ -604,7 +649,11 @@ sub dump_stats {
print "\n";
print "Kswapd wakeups: $total_kswapd_wake\n";
print "Kswapd pages scanned: $total_kswapd_nr_scanned\n";
print "Kswapd file pages scanned: $total_kswapd_nr_file_scanned\n";
print "Kswapd anon pages scanned: $total_kswapd_nr_anon_scanned\n";
print "Kswapd pages reclaimed: $total_kswapd_nr_reclaimed\n";
print "Kswapd file pages reclaimed: $total_kswapd_nr_file_reclaimed\n";
print "Kswapd anon pages reclaimed: $total_kswapd_nr_anon_reclaimed\n";
print "Kswapd reclaim write file sync I/O: $total_kswapd_writepage_file_sync\n";
print "Kswapd reclaim write anon sync I/O: $total_kswapd_writepage_anon_sync\n";
print "Kswapd reclaim write file async I/O: $total_kswapd_writepage_file_async\n";
Expand All @@ -629,7 +678,11 @@ ()
$perprocess{$process}->{MM_VMSCAN_WAKEUP_KSWAPD} += $perprocesspid{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD};
$perprocess{$process}->{HIGH_KSWAPD_REWAKEUP} += $perprocesspid{$process_pid}->{HIGH_KSWAPD_REWAKEUP};
$perprocess{$process}->{HIGH_NR_SCANNED} += $perprocesspid{$process_pid}->{HIGH_NR_SCANNED};
$perprocess{$process}->{HIGH_NR_FILE_SCANNED} += $perprocesspid{$process_pid}->{HIGH_NR_FILE_SCANNED};
$perprocess{$process}->{HIGH_NR_ANON_SCANNED} += $perprocesspid{$process_pid}->{HIGH_NR_ANON_SCANNED};
$perprocess{$process}->{HIGH_NR_RECLAIMED} += $perprocesspid{$process_pid}->{HIGH_NR_RECLAIMED};
$perprocess{$process}->{HIGH_NR_FILE_RECLAIMED} += $perprocesspid{$process_pid}->{HIGH_NR_FILE_RECLAIMED};
$perprocess{$process}->{HIGH_NR_ANON_RECLAIMED} += $perprocesspid{$process_pid}->{HIGH_NR_ANON_RECLAIMED};
$perprocess{$process}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC} += $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC};
$perprocess{$process}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC} += $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC};
$perprocess{$process}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC} += $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC};
Expand Down

0 comments on commit 2c51856

Please sign in to comment.