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Commit 2c51856c authored by Chen Yucong's avatar Chen Yucong Committed by Linus Torvalds
Browse files

mm: trace-vmscan-postprocess.pl: report the number of file/anon pages 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: default avatarChen Yucong <slaoub@gmail.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent d0480be4

Documentation/trace/postprocess/trace-vmscan-postprocess.pl

+53 −0
Original line number Diff line number Diff line
@@ -47,6 +47,10 @@ use constant HIGH_KSWAPD_REWAKEUP => 21; 
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;
@@ -56,14 +60,18 @@ my $opt_read_procstat; 


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;
@@ -374,6 +382,7 @@ EVENT_PROCESS: 
			}

			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
@@ -382,6 +391,11 @@ EVENT_PROCESS: 
			# 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;
@@ -391,8 +405,19 @@ EVENT_PROCESS: 
				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) {
@@ -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};
@@ -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);
@@ -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};
@@ -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});
@@ -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";
@@ -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";
@@ -629,7 +678,11 @@ sub aggregate_perprocesspid() { 
		$perprocess{$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};