projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b898cc70 MG |
1 | #!/usr/bin/perl |
| 2 | # This is a POC for reading the text representation of trace output related to | |
| 3 | # page reclaim. It makes an attempt to extract some high-level information on | |
| 4 | # what is going on. The accuracy of the parser may vary | |
| 5 | # | |
| 6 | # Example usage: trace-vmscan-postprocess.pl < /sys/kernel/debug/tracing/trace_pipe | |
| 7 | # other options | |
| 8 | # --read-procstat If the trace lacks process info, get it from /proc | |
| 9 | # --ignore-pid Aggregate processes of the same name together | |
| 10 | # | |
| 11 | # Copyright (c) IBM Corporation 2009 | |
| 12 | # Author: Mel Gorman <mel@csn.ul.ie> | |
| 13 | use strict; | |
| 14 | use Getopt::Long; | |
| 15 | ||
| 16 | # Tracepoint events | |
| 17 | use constant MM_VMSCAN_DIRECT_RECLAIM_BEGIN => 1; | |
| 18 | use constant MM_VMSCAN_DIRECT_RECLAIM_END => 2; | |
| 19 | use constant MM_VMSCAN_KSWAPD_WAKE => 3; | |
| 20 | use constant MM_VMSCAN_KSWAPD_SLEEP => 4; | |
| 21 | use constant MM_VMSCAN_LRU_SHRINK_ACTIVE => 5; | |
| 22 | use constant MM_VMSCAN_LRU_SHRINK_INACTIVE => 6; | |
| 23 | use constant MM_VMSCAN_LRU_ISOLATE => 7; | |
| 24 | use constant MM_VMSCAN_WRITEPAGE_FILE_SYNC => 8; | |
| 25 | use constant MM_VMSCAN_WRITEPAGE_ANON_SYNC => 9; | |
| 26 | use constant MM_VMSCAN_WRITEPAGE_FILE_ASYNC => 10; | |
| 27 | use constant MM_VMSCAN_WRITEPAGE_ANON_ASYNC => 11; | |
| 28 | use constant MM_VMSCAN_WRITEPAGE_ASYNC => 12; | |
| 29 | use constant EVENT_UNKNOWN => 13; | |
| 30 | ||
| 31 | # Per-order events | |
| 32 | use constant MM_VMSCAN_DIRECT_RECLAIM_BEGIN_PERORDER => 11; | |
| 33 | use constant MM_VMSCAN_WAKEUP_KSWAPD_PERORDER => 12; | |
| 34 | use constant MM_VMSCAN_KSWAPD_WAKE_PERORDER => 13; | |
| 35 | use constant HIGH_KSWAPD_REWAKEUP_PERORDER => 14; | |
| 36 | ||
| 37 | # Constants used to track state | |
| 38 | use constant STATE_DIRECT_BEGIN => 15; | |
| 39 | use constant STATE_DIRECT_ORDER => 16; | |
| 40 | use constant STATE_KSWAPD_BEGIN => 17; | |
| 41 | use constant STATE_KSWAPD_ORDER => 18; | |
| 42 | ||
| 43 | # High-level events extrapolated from tracepoints | |
| 44 | use constant HIGH_DIRECT_RECLAIM_LATENCY => 19; | |
| 45 | use constant HIGH_KSWAPD_LATENCY => 20; | |
| 46 | use constant HIGH_KSWAPD_REWAKEUP => 21; | |
| 47 | use constant HIGH_NR_SCANNED => 22; | |
| 48 | use constant HIGH_NR_TAKEN => 23; | |
| e11da5b4 | 49 | use constant HIGH_NR_RECLAIMED => 24; |
| 2c51856c CY |
50 | use constant HIGH_NR_FILE_SCANNED => 25; |
| 51 | use constant HIGH_NR_ANON_SCANNED => 26; | |
| 52 | use constant HIGH_NR_FILE_RECLAIMED => 27; | |
| 53 | use constant HIGH_NR_ANON_RECLAIMED => 28; | |
| b898cc70 MG |
54 | |
| 55 | my %perprocesspid; | |
| 56 | my %perprocess; | |
| 57 | my %last_procmap; | |
| 58 | my $opt_ignorepid; | |
| 59 | my $opt_read_procstat; | |
| 60 | ||
| 61 | my $total_wakeup_kswapd; | |
| 62 | my ($total_direct_reclaim, $total_direct_nr_scanned); | |
| 2c51856c | 63 | my ($total_direct_nr_file_scanned, $total_direct_nr_anon_scanned); |
| b898cc70 | 64 | my ($total_direct_latency, $total_kswapd_latency); |
| e11da5b4 | 65 | my ($total_direct_nr_reclaimed); |
| 2c51856c | 66 | my ($total_direct_nr_file_reclaimed, $total_direct_nr_anon_reclaimed); |
| b898cc70 MG |
67 | my ($total_direct_writepage_file_sync, $total_direct_writepage_file_async); |
| 68 | my ($total_direct_writepage_anon_sync, $total_direct_writepage_anon_async); | |
| 69 | my ($total_kswapd_nr_scanned, $total_kswapd_wake); | |
| 2c51856c | 70 | my ($total_kswapd_nr_file_scanned, $total_kswapd_nr_anon_scanned); |
| b898cc70 MG |
71 | my ($total_kswapd_writepage_file_sync, $total_kswapd_writepage_file_async); |
| 72 | my ($total_kswapd_writepage_anon_sync, $total_kswapd_writepage_anon_async); | |
| e11da5b4 | 73 | my ($total_kswapd_nr_reclaimed); |
| 2c51856c | 74 | my ($total_kswapd_nr_file_reclaimed, $total_kswapd_nr_anon_reclaimed); |
| b898cc70 MG |
75 | |
| 76 | # Catch sigint and exit on request | |
| 77 | my $sigint_report = 0; | |
| 78 | my $sigint_exit = 0; | |
| 79 | my $sigint_pending = 0; | |
| 80 | my $sigint_received = 0; | |
| 81 | sub sigint_handler { | |
| 82 | my $current_time = time; | |
| 83 | if ($current_time - 2 > $sigint_received) { | |
| 84 | print "SIGINT received, report pending. Hit ctrl-c again to exit\n"; | |
| 85 | $sigint_report = 1; | |
| 86 | } else { | |
| 87 | if (!$sigint_exit) { | |
| 88 | print "Second SIGINT received quickly, exiting\n"; | |
| 89 | } | |
| 90 | $sigint_exit++; | |
| 91 | } | |
| 92 | ||
| 93 | if ($sigint_exit > 3) { | |
| 94 | print "Many SIGINTs received, exiting now without report\n"; | |
| 95 | exit; | |
| 96 | } | |
| 97 | ||
| 98 | $sigint_received = $current_time; | |
| 99 | $sigint_pending = 1; | |
| 100 | } | |
| 101 | $SIG{INT} = "sigint_handler"; | |
| 102 | ||
| 103 | # Parse command line options | |
| 104 | GetOptions( | |
| 105 | 'ignore-pid' => \$opt_ignorepid, | |
| 106 | 'read-procstat' => \$opt_read_procstat, | |
| 107 | ); | |
| 108 | ||
| 109 | # Defaults for dynamically discovered regex's | |
| 110 | my $regex_direct_begin_default = 'order=([0-9]*) may_writepage=([0-9]*) gfp_flags=([A-Z_|]*)'; | |
| 111 | my $regex_direct_end_default = 'nr_reclaimed=([0-9]*)'; | |
| 112 | my $regex_kswapd_wake_default = 'nid=([0-9]*) order=([0-9]*)'; | |
| 113 | my $regex_kswapd_sleep_default = 'nid=([0-9]*)'; | |
| 114 | my $regex_wakeup_kswapd_default = 'nid=([0-9]*) zid=([0-9]*) order=([0-9]*)'; | |
| b27ebf77 | 115 | my $regex_lru_isolate_default = 'isolate_mode=([0-9]*) order=([0-9]*) nr_requested=([0-9]*) nr_scanned=([0-9]*) nr_taken=([0-9]*) file=([0-9]*)'; |
| e11da5b4 | 116 | my $regex_lru_shrink_inactive_default = 'nid=([0-9]*) zid=([0-9]*) nr_scanned=([0-9]*) nr_reclaimed=([0-9]*) priority=([0-9]*) flags=([A-Z_|]*)'; |
| b898cc70 MG |
117 | my $regex_lru_shrink_active_default = 'lru=([A-Z_]*) nr_scanned=([0-9]*) nr_rotated=([0-9]*) priority=([0-9]*)'; |
| 118 | my $regex_writepage_default = 'page=([0-9a-f]*) pfn=([0-9]*) flags=([A-Z_|]*)'; | |
| 119 | ||
| 120 | # Dyanically discovered regex | |
| 121 | my $regex_direct_begin; | |
| 122 | my $regex_direct_end; | |
| 123 | my $regex_kswapd_wake; | |
| 124 | my $regex_kswapd_sleep; | |
| 125 | my $regex_wakeup_kswapd; | |
| 126 | my $regex_lru_isolate; | |
| 127 | my $regex_lru_shrink_inactive; | |
| 128 | my $regex_lru_shrink_active; | |
| 129 | my $regex_writepage; | |
| 130 | ||
| 131 | # Static regex used. Specified like this for readability and for use with /o | |
| 132 | # (process_pid) (cpus ) ( time ) (tpoint ) (details) | |
| bd727816 | 133 | my $regex_traceevent = '\s*([a-zA-Z0-9-]*)\s*(\[[0-9]*\])(\s*[dX.][Nnp.][Hhs.][0-9a-fA-F.]*|)\s*([0-9.]*):\s*([a-zA-Z_]*):\s*(.*)'; |
| b898cc70 MG |
134 | my $regex_statname = '[-0-9]*\s\((.*)\).*'; |
| 135 | my $regex_statppid = '[-0-9]*\s\(.*\)\s[A-Za-z]\s([0-9]*).*'; | |
| 136 | ||
| 137 | sub generate_traceevent_regex { | |
| 138 | my $event = shift; | |
| 139 | my $default = shift; | |
| 140 | my $regex; | |
| 141 | ||
| 142 | # Read the event format or use the default | |
| 143 | if (!open (FORMAT, "/sys/kernel/debug/tracing/events/$event/format")) { | |
| 144 | print("WARNING: Event $event format string not found\n"); | |
| 145 | return $default; | |
| 146 | } else { | |
| 147 | my $line; | |
| 148 | while (!eof(FORMAT)) { | |
| 149 | $line = <FORMAT>; | |
| 150 | $line =~ s/, REC->.*//; | |
| 151 | if ($line =~ /^print fmt:\s"(.*)".*/) { | |
| 152 | $regex = $1; | |
| 153 | $regex =~ s/%s/\([0-9a-zA-Z|_]*\)/g; | |
| 154 | $regex =~ s/%p/\([0-9a-f]*\)/g; | |
| 155 | $regex =~ s/%d/\([-0-9]*\)/g; | |
| 156 | $regex =~ s/%ld/\([-0-9]*\)/g; | |
| 157 | $regex =~ s/%lu/\([0-9]*\)/g; | |
| 158 | } | |
| 159 | } | |
| 160 | } | |
| 161 | ||
| 162 | # Can't handle the print_flags stuff but in the context of this | |
| 163 | # script, it really doesn't matter | |
| 164 | $regex =~ s/\(REC.*\) \? __print_flags.*//; | |
| 165 | ||
| 166 | # Verify fields are in the right order | |
| 167 | my $tuple; | |
| 168 | foreach $tuple (split /\s/, $regex) { | |
| 169 | my ($key, $value) = split(/=/, $tuple); | |
| 170 | my $expected = shift; | |
| 171 | if ($key ne $expected) { | |
| 172 | print("WARNING: Format not as expected for event $event '$key' != '$expected'\n"); | |
| 173 | $regex =~ s/$key=\((.*)\)/$key=$1/; | |
| 174 | } | |
| 175 | } | |
| 176 | ||
| 177 | if (defined shift) { | |
| 178 | die("Fewer fields than expected in format"); | |
| 179 | } | |
| 180 | ||
| 181 | return $regex; | |
| 182 | } | |
| 183 | ||
| 184 | $regex_direct_begin = generate_traceevent_regex( | |
| 185 | "vmscan/mm_vmscan_direct_reclaim_begin", | |
| 186 | $regex_direct_begin_default, | |
| 187 | "order", "may_writepage", | |
| 188 | "gfp_flags"); | |
| 189 | $regex_direct_end = generate_traceevent_regex( | |
| 190 | "vmscan/mm_vmscan_direct_reclaim_end", | |
| 191 | $regex_direct_end_default, | |
| 192 | "nr_reclaimed"); | |
| 193 | $regex_kswapd_wake = generate_traceevent_regex( | |
| 194 | "vmscan/mm_vmscan_kswapd_wake", | |
| 195 | $regex_kswapd_wake_default, | |
| 196 | "nid", "order"); | |
| 197 | $regex_kswapd_sleep = generate_traceevent_regex( | |
| 198 | "vmscan/mm_vmscan_kswapd_sleep", | |
| 199 | $regex_kswapd_sleep_default, | |
| 200 | "nid"); | |
| 201 | $regex_wakeup_kswapd = generate_traceevent_regex( | |
| 202 | "vmscan/mm_vmscan_wakeup_kswapd", | |
| 203 | $regex_wakeup_kswapd_default, | |
| 204 | "nid", "zid", "order"); | |
| 205 | $regex_lru_isolate = generate_traceevent_regex( | |
| 206 | "vmscan/mm_vmscan_lru_isolate", | |
| 207 | $regex_lru_isolate_default, | |
| 208 | "isolate_mode", "order", | |
| 209 | "nr_requested", "nr_scanned", "nr_taken", | |
| b27ebf77 | 210 | "file"); |
| b898cc70 MG |
211 | $regex_lru_shrink_inactive = generate_traceevent_regex( |
| 212 | "vmscan/mm_vmscan_lru_shrink_inactive", | |
| 213 | $regex_lru_shrink_inactive_default, | |
| 214 | "nid", "zid", | |
| e11da5b4 MG |
215 | "nr_scanned", "nr_reclaimed", "priority", |
| 216 | "flags"); | |
| b898cc70 MG |
217 | $regex_lru_shrink_active = generate_traceevent_regex( |
| 218 | "vmscan/mm_vmscan_lru_shrink_active", | |
| 219 | $regex_lru_shrink_active_default, | |
| 220 | "nid", "zid", | |
| 221 | "lru", | |
| 222 | "nr_scanned", "nr_rotated", "priority"); | |
| 223 | $regex_writepage = generate_traceevent_regex( | |
| 224 | "vmscan/mm_vmscan_writepage", | |
| 225 | $regex_writepage_default, | |
| 226 | "page", "pfn", "flags"); | |
| 227 | ||
| 228 | sub read_statline($) { | |
| 229 | my $pid = $_[0]; | |
| 230 | my $statline; | |
| 231 | ||
| 232 | if (open(STAT, "/proc/$pid/stat")) { | |
| 233 | $statline = <STAT>; | |
| 234 | close(STAT); | |
| 235 | } | |
| 236 | ||
| 237 | if ($statline eq '') { | |
| 238 | $statline = "-1 (UNKNOWN_PROCESS_NAME) R 0"; | |
| 239 | } | |
| 240 | ||
| 241 | return $statline; | |
| 242 | } | |
| 243 | ||
| 244 | sub guess_process_pid($$) { | |
| 245 | my $pid = $_[0]; | |
| 246 | my $statline = $_[1]; | |
| 247 | ||
| 248 | if ($pid == 0) { | |
| 249 | return "swapper-0"; | |
| 250 | } | |
| 251 | ||
| 252 | if ($statline !~ /$regex_statname/o) { | |
| 253 | die("Failed to math stat line for process name :: $statline"); | |
| 254 | } | |
| 255 | return "$1-$pid"; | |
| 256 | } | |
| 257 | ||
| 258 | # Convert sec.usec timestamp format | |
| 259 | sub timestamp_to_ms($) { | |
| 260 | my $timestamp = $_[0]; | |
| 261 | ||
| 262 | my ($sec, $usec) = split (/\./, $timestamp); | |
| 263 | return ($sec * 1000) + ($usec / 1000); | |
| 264 | } | |
| 265 | ||
| 266 | sub process_events { | |
| 267 | my $traceevent; | |
| 268 | my $process_pid; | |
| 269 | my $cpus; | |
| 270 | my $timestamp; | |
| 271 | my $tracepoint; | |
| 272 | my $details; | |
| 273 | my $statline; | |
| 274 | ||
| 275 | # Read each line of the event log | |
| 276 | EVENT_PROCESS: | |
| 277 | while ($traceevent = <STDIN>) { | |
| 278 | if ($traceevent =~ /$regex_traceevent/o) { | |
| 279 | $process_pid = $1; | |
| bd727816 VM |
280 | $timestamp = $4; |
| 281 | $tracepoint = $5; | |
| b898cc70 MG |
282 | |
| 283 | $process_pid =~ /(.*)-([0-9]*)$/; | |
| 284 | my $process = $1; | |
| 285 | my $pid = $2; | |
| 286 | ||
| 287 | if ($process eq "") { | |
| 288 | $process = $last_procmap{$pid}; | |
| 289 | $process_pid = "$process-$pid"; | |
| 290 | } | |
| 291 | $last_procmap{$pid} = $process; | |
| 292 | ||
| 293 | if ($opt_read_procstat) { | |
| 294 | $statline = read_statline($pid); | |
| 295 | if ($opt_read_procstat && $process eq '') { | |
| 296 | $process_pid = guess_process_pid($pid, $statline); | |
| 297 | } | |
| 298 | } | |
| 299 | } else { | |
| 300 | next; | |
| 301 | } | |
| 302 | ||
| 303 | # Perl Switch() sucks majorly | |
| 304 | if ($tracepoint eq "mm_vmscan_direct_reclaim_begin") { | |
| 305 | $timestamp = timestamp_to_ms($timestamp); | |
| 306 | $perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN}++; | |
| 307 | $perprocesspid{$process_pid}->{STATE_DIRECT_BEGIN} = $timestamp; | |
| 308 | ||
| bd727816 | 309 | $details = $6; |
| b898cc70 MG |
310 | if ($details !~ /$regex_direct_begin/o) { |
| 311 | print "WARNING: Failed to parse mm_vmscan_direct_reclaim_begin as expected\n"; | |
| 312 | print " $details\n"; | |
| 313 | print " $regex_direct_begin\n"; | |
| 314 | next; | |
| 315 | } | |
| 316 | my $order = $1; | |
| 317 | $perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN_PERORDER}[$order]++; | |
| 318 | $perprocesspid{$process_pid}->{STATE_DIRECT_ORDER} = $order; | |
| 319 | } elsif ($tracepoint eq "mm_vmscan_direct_reclaim_end") { | |
| 320 | # Count the event itself | |
| 321 | my $index = $perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_END}; | |
| 322 | $perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_END}++; | |
| 323 | ||
| 324 | # Record how long direct reclaim took this time | |
| 325 | if (defined $perprocesspid{$process_pid}->{STATE_DIRECT_BEGIN}) { | |
| 326 | $timestamp = timestamp_to_ms($timestamp); | |
| 327 | my $order = $perprocesspid{$process_pid}->{STATE_DIRECT_ORDER}; | |
| 328 | my $latency = ($timestamp - $perprocesspid{$process_pid}->{STATE_DIRECT_BEGIN}); | |
| 329 | $perprocesspid{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index] = "$order-$latency"; | |
| 330 | } | |
| 331 | } elsif ($tracepoint eq "mm_vmscan_kswapd_wake") { | |
| bd727816 | 332 | $details = $6; |
| b898cc70 MG |
333 | if ($details !~ /$regex_kswapd_wake/o) { |
| 334 | print "WARNING: Failed to parse mm_vmscan_kswapd_wake as expected\n"; | |
| 335 | print " $details\n"; | |
| 336 | print " $regex_kswapd_wake\n"; | |
| 337 | next; | |
| 338 | } | |
| 339 | ||
| 340 | my $order = $2; | |
| 341 | $perprocesspid{$process_pid}->{STATE_KSWAPD_ORDER} = $order; | |
| 342 | if (!$perprocesspid{$process_pid}->{STATE_KSWAPD_BEGIN}) { | |
| 343 | $timestamp = timestamp_to_ms($timestamp); | |
| 344 | $perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE}++; | |
| 345 | $perprocesspid{$process_pid}->{STATE_KSWAPD_BEGIN} = $timestamp; | |
| 346 | $perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE_PERORDER}[$order]++; | |
| 347 | } else { | |
| 348 | $perprocesspid{$process_pid}->{HIGH_KSWAPD_REWAKEUP}++; | |
| 349 | $perprocesspid{$process_pid}->{HIGH_KSWAPD_REWAKEUP_PERORDER}[$order]++; | |
| 350 | } | |
| 351 | } elsif ($tracepoint eq "mm_vmscan_kswapd_sleep") { | |
| 352 | ||
| 353 | # Count the event itself | |
| 354 | my $index = $perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_SLEEP}; | |
| 355 | $perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_SLEEP}++; | |
| 356 | ||
| 357 | # Record how long kswapd was awake | |
| 358 | $timestamp = timestamp_to_ms($timestamp); | |
| 359 | my $order = $perprocesspid{$process_pid}->{STATE_KSWAPD_ORDER}; | |
| 360 | my $latency = ($timestamp - $perprocesspid{$process_pid}->{STATE_KSWAPD_BEGIN}); | |
| 361 | $perprocesspid{$process_pid}->{HIGH_KSWAPD_LATENCY}[$index] = "$order-$latency"; | |
| 362 | $perprocesspid{$process_pid}->{STATE_KSWAPD_BEGIN} = 0; | |
| 363 | } elsif ($tracepoint eq "mm_vmscan_wakeup_kswapd") { | |
| 364 | $perprocesspid{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD}++; | |
| 365 | ||
| bd727816 | 366 | $details = $6; |
| b898cc70 MG |
367 | if ($details !~ /$regex_wakeup_kswapd/o) { |
| 368 | print "WARNING: Failed to parse mm_vmscan_wakeup_kswapd as expected\n"; | |
| 369 | print " $details\n"; | |
| 370 | print " $regex_wakeup_kswapd\n"; | |
| 371 | next; | |
| 372 | } | |
| 373 | my $order = $3; | |
| 374 | $perprocesspid{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD_PERORDER}[$order]++; | |
| 375 | } elsif ($tracepoint eq "mm_vmscan_lru_isolate") { | |
| bd727816 | 376 | $details = $6; |
| b898cc70 MG |
377 | if ($details !~ /$regex_lru_isolate/o) { |
| 378 | print "WARNING: Failed to parse mm_vmscan_lru_isolate as expected\n"; | |
| 379 | print " $details\n"; | |
| 380 | print " $regex_lru_isolate/o\n"; | |
| 381 | next; | |
| 382 | } | |
| 7a2d19bc | 383 | my $isolate_mode = $1; |
| b898cc70 | 384 | my $nr_scanned = $4; |
| 2c51856c | 385 | my $file = $6; |
| 7a2d19bc MG |
386 | |
| 387 | # To closer match vmstat scanning statistics, only count isolate_both | |
| 388 | # and isolate_inactive as scanning. isolate_active is rotation | |
| 4356f21d MK |
389 | # isolate_inactive == 1 |
| 390 | # isolate_active == 2 | |
| 391 | # isolate_both == 3 | |
| 392 | if ($isolate_mode != 2) { | |
| 7a2d19bc | 393 | $perprocesspid{$process_pid}->{HIGH_NR_SCANNED} += $nr_scanned; |
| 2c51856c CY |
394 | if ($file == 1) { |
| 395 | $perprocesspid{$process_pid}->{HIGH_NR_FILE_SCANNED} += $nr_scanned; | |
| 396 | } else { | |
| 397 | $perprocesspid{$process_pid}->{HIGH_NR_ANON_SCANNED} += $nr_scanned; | |
| 398 | } | |
| 7a2d19bc | 399 | } |
| e11da5b4 | 400 | } elsif ($tracepoint eq "mm_vmscan_lru_shrink_inactive") { |
| bd727816 | 401 | $details = $6; |
| e11da5b4 MG |
402 | if ($details !~ /$regex_lru_shrink_inactive/o) { |
| 403 | print "WARNING: Failed to parse mm_vmscan_lru_shrink_inactive as expected\n"; | |
| 404 | print " $details\n"; | |
| 405 | print " $regex_lru_shrink_inactive/o\n"; | |
| 406 | next; | |
| 407 | } | |
| 2c51856c | 408 | |
| e11da5b4 | 409 | my $nr_reclaimed = $4; |
| 2c51856c CY |
410 | my $flags = $6; |
| 411 | my $file = 0; | |
| 412 | if ($flags =~ /RECLAIM_WB_FILE/) { | |
| 413 | $file = 1; | |
| 414 | } | |
| e11da5b4 | 415 | $perprocesspid{$process_pid}->{HIGH_NR_RECLAIMED} += $nr_reclaimed; |
| 2c51856c CY |
416 | if ($file) { |
| 417 | $perprocesspid{$process_pid}->{HIGH_NR_FILE_RECLAIMED} += $nr_reclaimed; | |
| 418 | } else { | |
| 419 | $perprocesspid{$process_pid}->{HIGH_NR_ANON_RECLAIMED} += $nr_reclaimed; | |
| 420 | } | |
| b898cc70 | 421 | } elsif ($tracepoint eq "mm_vmscan_writepage") { |
| bd727816 | 422 | $details = $6; |
| b898cc70 MG |
423 | if ($details !~ /$regex_writepage/o) { |
| 424 | print "WARNING: Failed to parse mm_vmscan_writepage as expected\n"; | |
| 425 | print " $details\n"; | |
| 426 | print " $regex_writepage\n"; | |
| 427 | next; | |
| 428 | } | |
| 429 | ||
| 430 | my $flags = $3; | |
| 431 | my $file = 0; | |
| 432 | my $sync_io = 0; | |
| 433 | if ($flags =~ /RECLAIM_WB_FILE/) { | |
| 434 | $file = 1; | |
| 435 | } | |
| 436 | if ($flags =~ /RECLAIM_WB_SYNC/) { | |
| 437 | $sync_io = 1; | |
| 438 | } | |
| 439 | if ($sync_io) { | |
| 440 | if ($file) { | |
| 441 | $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC}++; | |
| 442 | } else { | |
| 443 | $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC}++; | |
| 444 | } | |
| 445 | } else { | |
| 446 | if ($file) { | |
| 447 | $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC}++; | |
| 448 | } else { | |
| 449 | $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC}++; | |
| 450 | } | |
| 451 | } | |
| 452 | } else { | |
| 453 | $perprocesspid{$process_pid}->{EVENT_UNKNOWN}++; | |
| 454 | } | |
| 455 | ||
| 456 | if ($sigint_pending) { | |
| 457 | last EVENT_PROCESS; | |
| 458 | } | |
| 459 | } | |
| 460 | } | |
| 461 | ||
| 462 | sub dump_stats { | |
| 463 | my $hashref = shift; | |
| 464 | my %stats = %$hashref; | |
| 465 | ||
| 466 | # Dump per-process stats | |
| 467 | my $process_pid; | |
| 468 | my $max_strlen = 0; | |
| 469 | ||
| 470 | # Get the maximum process name | |
| 471 | foreach $process_pid (keys %perprocesspid) { | |
| 472 | my $len = length($process_pid); | |
| 473 | if ($len > $max_strlen) { | |
| 474 | $max_strlen = $len; | |
| 475 | } | |
| 476 | } | |
| 477 | $max_strlen += 2; | |
| 478 | ||
| 479 | # Work out latencies | |
| 480 | printf("\n") if !$opt_ignorepid; | |
| 481 | printf("Reclaim latencies expressed as order-latency_in_ms\n") if !$opt_ignorepid; | |
| 482 | foreach $process_pid (keys %stats) { | |
| 483 | ||
| 484 | if (!$stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[0] && | |
| 485 | !$stats{$process_pid}->{HIGH_KSWAPD_LATENCY}[0]) { | |
| 486 | next; | |
| 487 | } | |
| 488 | ||
| 489 | printf "%-" . $max_strlen . "s ", $process_pid if !$opt_ignorepid; | |
| 490 | my $index = 0; | |
| 491 | while (defined $stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index] || | |
| 492 | defined $stats{$process_pid}->{HIGH_KSWAPD_LATENCY}[$index]) { | |
| 493 | ||
| 494 | if ($stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index]) { | |
| 495 | printf("%s ", $stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index]) if !$opt_ignorepid; | |
| 496 | my ($dummy, $latency) = split(/-/, $stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index]); | |
| 497 | $total_direct_latency += $latency; | |
| 498 | } else { | |
| 499 | printf("%s ", $stats{$process_pid}->{HIGH_KSWAPD_LATENCY}[$index]) if !$opt_ignorepid; | |
| 500 | my ($dummy, $latency) = split(/-/, $stats{$process_pid}->{HIGH_KSWAPD_LATENCY}[$index]); | |
| 501 | $total_kswapd_latency += $latency; | |
| 502 | } | |
| 503 | $index++; | |
| 504 | } | |
| 505 | print "\n" if !$opt_ignorepid; | |
| 506 | } | |
| 507 | ||
| 508 | # Print out process activity | |
| 509 | printf("\n"); | |
| e11da5b4 MG |
510 | printf("%-" . $max_strlen . "s %8s %10s %8s %8s %8s %8s %8s %8s\n", "Process", "Direct", "Wokeup", "Pages", "Pages", "Pages", "Pages", "Time"); |
| 511 | printf("%-" . $max_strlen . "s %8s %10s %8s %8s %8s %8s %8s %8s\n", "details", "Rclms", "Kswapd", "Scanned", "Rclmed", "Sync-IO", "ASync-IO", "Stalled"); | |
| b898cc70 MG |
512 | foreach $process_pid (keys %stats) { |
| 513 | ||
| 514 | if (!$stats{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN}) { | |
| 515 | next; | |
| 516 | } | |
| 517 | ||
| 518 | $total_direct_reclaim += $stats{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN}; | |
| 519 | $total_wakeup_kswapd += $stats{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD}; | |
| 520 | $total_direct_nr_scanned += $stats{$process_pid}->{HIGH_NR_SCANNED}; | |
| 2c51856c CY |
521 | $total_direct_nr_file_scanned += $stats{$process_pid}->{HIGH_NR_FILE_SCANNED}; |
| 522 | $total_direct_nr_anon_scanned += $stats{$process_pid}->{HIGH_NR_ANON_SCANNED}; | |
| e11da5b4 | 523 | $total_direct_nr_reclaimed += $stats{$process_pid}->{HIGH_NR_RECLAIMED}; |
| 2c51856c CY |
524 | $total_direct_nr_file_reclaimed += $stats{$process_pid}->{HIGH_NR_FILE_RECLAIMED}; |
| 525 | $total_direct_nr_anon_reclaimed += $stats{$process_pid}->{HIGH_NR_ANON_RECLAIMED}; | |
| b898cc70 MG |
526 | $total_direct_writepage_file_sync += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC}; |
| 527 | $total_direct_writepage_anon_sync += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC}; | |
| 528 | $total_direct_writepage_file_async += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC}; | |
| 529 | ||
| 530 | $total_direct_writepage_anon_async += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC}; | |
| 531 | ||
| 532 | my $index = 0; | |
| 533 | my $this_reclaim_delay = 0; | |
| 534 | while (defined $stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index]) { | |
| 535 | my ($dummy, $latency) = split(/-/, $stats{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$index]); | |
| 536 | $this_reclaim_delay += $latency; | |
| 537 | $index++; | |
| 538 | } | |
| 539 | ||
| e11da5b4 | 540 | printf("%-" . $max_strlen . "s %8d %10d %8u %8u %8u %8u %8.3f", |
| b898cc70 MG |
541 | $process_pid, |
| 542 | $stats{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN}, | |
| 543 | $stats{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD}, | |
| 544 | $stats{$process_pid}->{HIGH_NR_SCANNED}, | |
| 2c51856c CY |
545 | $stats{$process_pid}->{HIGH_NR_FILE_SCANNED}, |
| 546 | $stats{$process_pid}->{HIGH_NR_ANON_SCANNED}, | |
| e11da5b4 | 547 | $stats{$process_pid}->{HIGH_NR_RECLAIMED}, |
| 2c51856c CY |
548 | $stats{$process_pid}->{HIGH_NR_FILE_RECLAIMED}, |
| 549 | $stats{$process_pid}->{HIGH_NR_ANON_RECLAIMED}, | |
| b898cc70 MG |
550 | $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC} + $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC}, |
| 551 | $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC} + $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC}, | |
| 552 | $this_reclaim_delay / 1000); | |
| 553 | ||
| 554 | if ($stats{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN}) { | |
| 555 | print " "; | |
| 556 | for (my $order = 0; $order < 20; $order++) { | |
| 557 | my $count = $stats{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN_PERORDER}[$order]; | |
| 558 | if ($count != 0) { | |
| 559 | print "direct-$order=$count "; | |
| 560 | } | |
| 561 | } | |
| 562 | } | |
| 563 | if ($stats{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD}) { | |
| 564 | print " "; | |
| 565 | for (my $order = 0; $order < 20; $order++) { | |
| 566 | my $count = $stats{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD_PERORDER}[$order]; | |
| 567 | if ($count != 0) { | |
| 568 | print "wakeup-$order=$count "; | |
| 569 | } | |
| 570 | } | |
| 571 | } | |
| b898cc70 MG |
572 | |
| 573 | print "\n"; | |
| 574 | } | |
| 575 | ||
| 576 | # Print out kswapd activity | |
| 577 | printf("\n"); | |
| e11da5b4 MG |
578 | printf("%-" . $max_strlen . "s %8s %10s %8s %8s %8s %8s\n", "Kswapd", "Kswapd", "Order", "Pages", "Pages", "Pages", "Pages"); |
| 579 | printf("%-" . $max_strlen . "s %8s %10s %8s %8s %8s %8s\n", "Instance", "Wakeups", "Re-wakeup", "Scanned", "Rclmed", "Sync-IO", "ASync-IO"); | |
| b898cc70 MG |
580 | foreach $process_pid (keys %stats) { |
| 581 | ||
| 582 | if (!$stats{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE}) { | |
| 583 | next; | |
| 584 | } | |
| 585 | ||
| 586 | $total_kswapd_wake += $stats{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE}; | |
| 587 | $total_kswapd_nr_scanned += $stats{$process_pid}->{HIGH_NR_SCANNED}; | |
| 2c51856c CY |
588 | $total_kswapd_nr_file_scanned += $stats{$process_pid}->{HIGH_NR_FILE_SCANNED}; |
| 589 | $total_kswapd_nr_anon_scanned += $stats{$process_pid}->{HIGH_NR_ANON_SCANNED}; | |
| e11da5b4 | 590 | $total_kswapd_nr_reclaimed += $stats{$process_pid}->{HIGH_NR_RECLAIMED}; |
| 2c51856c CY |
591 | $total_kswapd_nr_file_reclaimed += $stats{$process_pid}->{HIGH_NR_FILE_RECLAIMED}; |
| 592 | $total_kswapd_nr_anon_reclaimed += $stats{$process_pid}->{HIGH_NR_ANON_RECLAIMED}; | |
| b898cc70 MG |
593 | $total_kswapd_writepage_file_sync += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC}; |
| 594 | $total_kswapd_writepage_anon_sync += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC}; | |
| 595 | $total_kswapd_writepage_file_async += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC}; | |
| 596 | $total_kswapd_writepage_anon_async += $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC}; | |
| 597 | ||
| e11da5b4 | 598 | printf("%-" . $max_strlen . "s %8d %10d %8u %8u %8i %8u", |
| b898cc70 MG |
599 | $process_pid, |
| 600 | $stats{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE}, | |
| 601 | $stats{$process_pid}->{HIGH_KSWAPD_REWAKEUP}, | |
| 602 | $stats{$process_pid}->{HIGH_NR_SCANNED}, | |
| 2c51856c CY |
603 | $stats{$process_pid}->{HIGH_NR_FILE_SCANNED}, |
| 604 | $stats{$process_pid}->{HIGH_NR_ANON_SCANNED}, | |
| e11da5b4 | 605 | $stats{$process_pid}->{HIGH_NR_RECLAIMED}, |
| 2c51856c CY |
606 | $stats{$process_pid}->{HIGH_NR_FILE_RECLAIMED}, |
| 607 | $stats{$process_pid}->{HIGH_NR_ANON_RECLAIMED}, | |
| b898cc70 MG |
608 | $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC} + $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC}, |
| 609 | $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC} + $stats{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC}); | |
| 610 | ||
| 611 | if ($stats{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE}) { | |
| 612 | print " "; | |
| 613 | for (my $order = 0; $order < 20; $order++) { | |
| 614 | my $count = $stats{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE_PERORDER}[$order]; | |
| 615 | if ($count != 0) { | |
| 616 | print "wake-$order=$count "; | |
| 617 | } | |
| 618 | } | |
| 619 | } | |
| 620 | if ($stats{$process_pid}->{HIGH_KSWAPD_REWAKEUP}) { | |
| 621 | print " "; | |
| 622 | for (my $order = 0; $order < 20; $order++) { | |
| 623 | my $count = $stats{$process_pid}->{HIGH_KSWAPD_REWAKEUP_PERORDER}[$order]; | |
| 624 | if ($count != 0) { | |
| 625 | print "rewake-$order=$count "; | |
| 626 | } | |
| 627 | } | |
| 628 | } | |
| 629 | printf("\n"); | |
| 630 | } | |
| 631 | ||
| 632 | # Print out summaries | |
| 633 | $total_direct_latency /= 1000; | |
| 634 | $total_kswapd_latency /= 1000; | |
| 635 | print "\nSummary\n"; | |
| 636 | print "Direct reclaims: $total_direct_reclaim\n"; | |
| 637 | print "Direct reclaim pages scanned: $total_direct_nr_scanned\n"; | |
| 2c51856c CY |
638 | print "Direct reclaim file pages scanned: $total_direct_nr_file_scanned\n"; |
| 639 | print "Direct reclaim anon pages scanned: $total_direct_nr_anon_scanned\n"; | |
| e11da5b4 | 640 | print "Direct reclaim pages reclaimed: $total_direct_nr_reclaimed\n"; |
| 2c51856c CY |
641 | print "Direct reclaim file pages reclaimed: $total_direct_nr_file_reclaimed\n"; |
| 642 | print "Direct reclaim anon pages reclaimed: $total_direct_nr_anon_reclaimed\n"; | |
| b898cc70 MG |
643 | print "Direct reclaim write file sync I/O: $total_direct_writepage_file_sync\n"; |
| 644 | print "Direct reclaim write anon sync I/O: $total_direct_writepage_anon_sync\n"; | |
| 645 | print "Direct reclaim write file async I/O: $total_direct_writepage_file_async\n"; | |
| 646 | print "Direct reclaim write anon async I/O: $total_direct_writepage_anon_async\n"; | |
| 647 | print "Wake kswapd requests: $total_wakeup_kswapd\n"; | |
| 648 | printf "Time stalled direct reclaim: %-1.2f seconds\n", $total_direct_latency; | |
| 649 | print "\n"; | |
| 650 | print "Kswapd wakeups: $total_kswapd_wake\n"; | |
| 651 | print "Kswapd pages scanned: $total_kswapd_nr_scanned\n"; | |
| 2c51856c CY |
652 | print "Kswapd file pages scanned: $total_kswapd_nr_file_scanned\n"; |
| 653 | print "Kswapd anon pages scanned: $total_kswapd_nr_anon_scanned\n"; | |
| e11da5b4 | 654 | print "Kswapd pages reclaimed: $total_kswapd_nr_reclaimed\n"; |
| 2c51856c CY |
655 | print "Kswapd file pages reclaimed: $total_kswapd_nr_file_reclaimed\n"; |
| 656 | print "Kswapd anon pages reclaimed: $total_kswapd_nr_anon_reclaimed\n"; | |
| b898cc70 MG |
657 | print "Kswapd reclaim write file sync I/O: $total_kswapd_writepage_file_sync\n"; |
| 658 | print "Kswapd reclaim write anon sync I/O: $total_kswapd_writepage_anon_sync\n"; | |
| 659 | print "Kswapd reclaim write file async I/O: $total_kswapd_writepage_file_async\n"; | |
| 660 | print "Kswapd reclaim write anon async I/O: $total_kswapd_writepage_anon_async\n"; | |
| 661 | printf "Time kswapd awake: %-1.2f seconds\n", $total_kswapd_latency; | |
| 662 | } | |
| 663 | ||
| 664 | sub aggregate_perprocesspid() { | |
| 665 | my $process_pid; | |
| 666 | my $process; | |
| 667 | undef %perprocess; | |
| 668 | ||
| 669 | foreach $process_pid (keys %perprocesspid) { | |
| 670 | $process = $process_pid; | |
| 671 | $process =~ s/-([0-9])*$//; | |
| 672 | if ($process eq '') { | |
| 673 | $process = "NO_PROCESS_NAME"; | |
| 674 | } | |
| 675 | ||
| 676 | $perprocess{$process}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN} += $perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN}; | |
| 677 | $perprocess{$process}->{MM_VMSCAN_KSWAPD_WAKE} += $perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE}; | |
| 678 | $perprocess{$process}->{MM_VMSCAN_WAKEUP_KSWAPD} += $perprocesspid{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD}; | |
| 679 | $perprocess{$process}->{HIGH_KSWAPD_REWAKEUP} += $perprocesspid{$process_pid}->{HIGH_KSWAPD_REWAKEUP}; | |
| 680 | $perprocess{$process}->{HIGH_NR_SCANNED} += $perprocesspid{$process_pid}->{HIGH_NR_SCANNED}; | |
| 2c51856c CY |
681 | $perprocess{$process}->{HIGH_NR_FILE_SCANNED} += $perprocesspid{$process_pid}->{HIGH_NR_FILE_SCANNED}; |
| 682 | $perprocess{$process}->{HIGH_NR_ANON_SCANNED} += $perprocesspid{$process_pid}->{HIGH_NR_ANON_SCANNED}; | |
| e11da5b4 | 683 | $perprocess{$process}->{HIGH_NR_RECLAIMED} += $perprocesspid{$process_pid}->{HIGH_NR_RECLAIMED}; |
| 2c51856c CY |
684 | $perprocess{$process}->{HIGH_NR_FILE_RECLAIMED} += $perprocesspid{$process_pid}->{HIGH_NR_FILE_RECLAIMED}; |
| 685 | $perprocess{$process}->{HIGH_NR_ANON_RECLAIMED} += $perprocesspid{$process_pid}->{HIGH_NR_ANON_RECLAIMED}; | |
| b898cc70 MG |
686 | $perprocess{$process}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC} += $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_SYNC}; |
| 687 | $perprocess{$process}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC} += $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_SYNC}; | |
| 688 | $perprocess{$process}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC} += $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_FILE_ASYNC}; | |
| 689 | $perprocess{$process}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC} += $perprocesspid{$process_pid}->{MM_VMSCAN_WRITEPAGE_ANON_ASYNC}; | |
| 690 | ||
| 691 | for (my $order = 0; $order < 20; $order++) { | |
| 692 | $perprocess{$process}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN_PERORDER}[$order] += $perprocesspid{$process_pid}->{MM_VMSCAN_DIRECT_RECLAIM_BEGIN_PERORDER}[$order]; | |
| 693 | $perprocess{$process}->{MM_VMSCAN_WAKEUP_KSWAPD_PERORDER}[$order] += $perprocesspid{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD_PERORDER}[$order]; | |
| 694 | $perprocess{$process}->{MM_VMSCAN_KSWAPD_WAKE_PERORDER}[$order] += $perprocesspid{$process_pid}->{MM_VMSCAN_KSWAPD_WAKE_PERORDER}[$order]; | |
| 695 | ||
| 696 | } | |
| 697 | ||
| 698 | # Aggregate direct reclaim latencies | |
| 699 | my $wr_index = $perprocess{$process}->{MM_VMSCAN_DIRECT_RECLAIM_END}; | |
| 700 | my $rd_index = 0; | |
| 701 | while (defined $perprocesspid{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$rd_index]) { | |
| 702 | $perprocess{$process}->{HIGH_DIRECT_RECLAIM_LATENCY}[$wr_index] = $perprocesspid{$process_pid}->{HIGH_DIRECT_RECLAIM_LATENCY}[$rd_index]; | |
| 703 | $rd_index++; | |
| 704 | $wr_index++; | |
| 705 | } | |
| 706 | $perprocess{$process}->{MM_VMSCAN_DIRECT_RECLAIM_END} = $wr_index; | |
| 707 | ||
| 708 | # Aggregate kswapd latencies | |
| 709 | my $wr_index = $perprocess{$process}->{MM_VMSCAN_KSWAPD_SLEEP}; | |
| 710 | my $rd_index = 0; | |
| 711 | while (defined $perprocesspid{$process_pid}->{HIGH_KSWAPD_LATENCY}[$rd_index]) { | |
| 712 | $perprocess{$process}->{HIGH_KSWAPD_LATENCY}[$wr_index] = $perprocesspid{$process_pid}->{HIGH_KSWAPD_LATENCY}[$rd_index]; | |
| 713 | $rd_index++; | |
| 714 | $wr_index++; | |
| 715 | } | |
| 716 | $perprocess{$process}->{MM_VMSCAN_DIRECT_RECLAIM_END} = $wr_index; | |
| 717 | } | |
| 718 | } | |
| 719 | ||
| 720 | sub report() { | |
| 721 | if (!$opt_ignorepid) { | |
| 722 | dump_stats(\%perprocesspid); | |
| 723 | } else { | |
| 724 | aggregate_perprocesspid(); | |
| 725 | dump_stats(\%perprocess); | |
| 726 | } | |
| 727 | } | |
| 728 | ||
| 729 | # Process events or signals until neither is available | |
| 730 | sub signal_loop() { | |
| 731 | my $sigint_processed; | |
| 732 | do { | |
| 733 | $sigint_processed = 0; | |
| 734 | process_events(); | |
| 735 | ||
| 736 | # Handle pending signals if any | |
| 737 | if ($sigint_pending) { | |
| 738 | my $current_time = time; | |
| 739 | ||
| 740 | if ($sigint_exit) { | |
| 741 | print "Received exit signal\n"; | |
| 742 | $sigint_pending = 0; | |
| 743 | } | |
| 744 | if ($sigint_report) { | |
| 745 | if ($current_time >= $sigint_received + 2) { | |
| 746 | report(); | |
| 747 | $sigint_report = 0; | |
| 748 | $sigint_pending = 0; | |
| 749 | $sigint_processed = 1; | |
| 750 | } | |
| 751 | } | |
| 752 | } | |
| 753 | } while ($sigint_pending || $sigint_processed); | |
| 754 | } | |
| 755 | ||
| 756 | signal_loop(); | |
| 757 | report(); |