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2026-07-16 - 14:36
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the highest latencies:
System rackdslot2.osadl.org (updated Thu Jul 16, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139591233168,22phc2sys0-21swapper/319:09:273
190652207171,24sleep10-21swapper/119:08:421
190872206174,21sleep20-21swapper/219:08:582
188472204172,21sleep00-21swapper/019:05:510
1873921690,6sleep11946099cyclictest20:15:161
2246821320,2sleep31946299cyclictest22:37:203
1395919267,13phc2sys0-21swapper/319:10:023
1916828363,11sleep00-21swapper/019:10:010
1946299594,10cyclictest9566-21sed00:25:193
1946299583,17cyclictest15882-21date21:15:183
1946299583,15cyclictest32710-21/usr/sbin/munin20:45:133
1946299583,11cyclictest9909-21phc2sys-jitter22:10:233
163272580,3sleep00-21swapper/020:10:140
1946299573,11cyclictest25825-21which22:45:153
1946299564,11cyclictest17501-21awk22:25:263
1946299554,21cyclictest217-21systemd-journal22:21:203
1946299554,21cyclictest217-21systemd-journal22:21:193
139291550,1ptp4l391rcuc/322:00:243
1946299544,11cyclictest25596-21sed21:35:253
1946299533,9cyclictest16402-21timerwakeupswit23:30:263
1946299522,11cyclictest26440-21latency_hist23:55:003
139291520,1ptp4l391rcuc/319:17:443
139291500,1ptp4l391rcuc/319:47:543
139291500,1ptp4l391rcuc/319:47:543
1946299463,17cyclictest1444-21/usr/sbin/munin21:55:183
1946299462,13cyclictest10936-21apt-get20:00:113
1946299453,17cyclictest31483-21/usr/sbin/munin21:50:253
1946199452,33cyclictest0-21swapper/223:25:002
19462994439,3cyclictest21754-21cron21:29:593
19461994438,3cyclictest266132sleep219:25:112
19459994439,2cyclictest24131-21sh21:34:590
135291440,2getstats0-21swapper/322:15:473
1946299436,5cyclictest0-21swapper/323:00:243
1946299433,7cyclictest28105-21ls19:25:243
139291430,0ptp4l401ktimersoftd/323:23:223
139291420,0ptp4l401ktimersoftd/320:55:123
1946299414,8cyclictest2521-21gnome-shell21:04:593
1946299413,15cyclictest10128-21/usr/sbin/munin21:05:213
1946199410,3cyclictest15374-21chrt22:22:302
1946199410,3cyclictest15374-21chrt22:22:302
139291410,0ptp4l401ktimersoftd/323:47:093
1946299403,7cyclictest28183-21perl22:50:153
1946299402,15cyclictest2734-21/usr/sbin/munin20:50:243
1946199400,4cyclictest12506-21apt-get21:10:122
1946199400,4cyclictest12506-21apt-get21:10:122
139291400,0ptp4l401ktimersoftd/323:58:083
19461993933,4cyclictest33-21ksoftirqd/223:25:082
19461993933,4cyclictest33-21ksoftirqd/223:25:082
1946299381,12cyclictest1312-21snmpd00:06:063
19461993831,4cyclictest33-21ksoftirqd/221:34:592
19460993832,4cyclictest25-21ksoftirqd/100:15:101
19462993732,3cyclictest41-21ksoftirqd/323:41:343
19462993731,4cyclictest41-21ksoftirqd/322:32:503
1946299372,8cyclictest13901-21df_inode20:05:143
19461993732,3cyclictest33-21ksoftirqd/219:15:272
19461993731,4cyclictest33-21ksoftirqd/222:30:372
19461993731,4cyclictest33-21ksoftirqd/222:18:172
19461993731,4cyclictest33-21ksoftirqd/220:58:192
19461993731,4cyclictest33-21ksoftirqd/219:12:512
19461993714,20cyclictest29029-21date00:00:002
1946199371,3cyclictest32420-21chrt23:00:062
1946199370,6cyclictest28415-21sed21:40:282
19460993731,4cyclictest25-21ksoftirqd/122:47:001
19460993731,4cyclictest25-21ksoftirqd/120:28:211
19459993732,3cyclictest9-21ksoftirqd/021:20:120
19459993731,3cyclictest9-21ksoftirqd/021:07:170
1946299363,7cyclictest17648-21diskstats21:20:153
19462993631,3cyclictest41-21ksoftirqd/319:58:073
19462993630,4cyclictest41-21ksoftirqd/323:29:313
19462993630,4cyclictest41-21ksoftirqd/323:29:313
19462993630,4cyclictest41-21ksoftirqd/323:12:263
19462993630,4cyclictest41-21ksoftirqd/321:41:203
19462993630,4cyclictest41-21ksoftirqd/319:41:333
1946299362,14cyclictest8444-21meminfo23:15:203
19461993631,3cyclictest33-21ksoftirqd/221:50:002
19461993630,4cyclictest33-21ksoftirqd/222:39:212
19461993630,4cyclictest33-21ksoftirqd/220:28:172
19461993630,4cyclictest33-21ksoftirqd/219:42:592
19461993630,4cyclictest33-21ksoftirqd/219:32:092
19461993620,14cyclictest33-21ksoftirqd/200:05:002
19461993620,14cyclictest33-21ksoftirqd/200:05:002
19461993614,20cyclictest32176-21latency_hist23:00:002
1946199361,3cyclictest22822-21latency_hist20:24:592
19460993630,4cyclictest25-21ksoftirqd/123:05:581
19460993630,4cyclictest25-21ksoftirqd/122:15:561
19460993630,4cyclictest25-21ksoftirqd/121:19:591
19460993630,4cyclictest25-21ksoftirqd/120:13:231
19460993629,4cyclictest25-21ksoftirqd/123:43:331
19459993631,3cyclictest31180-21cron00:05:000
19459993631,3cyclictest31180-21cron00:05:000
19459993630,4cyclictest9-21ksoftirqd/020:39:380
19459993630,3cyclictest9-21ksoftirqd/022:41:020
19459993630,3cyclictest9-21ksoftirqd/019:43:310
19459993629,4cyclictest9-21ksoftirqd/021:46:240
19462993530,3cyclictest41-21ksoftirqd/322:41:423
19462993530,3cyclictest41-21ksoftirqd/321:45:553
19462993529,4cyclictest41-21ksoftirqd/322:58:263
19462993529,4cyclictest41-21ksoftirqd/320:25:383
19462993529,4cyclictest41-21ksoftirqd/319:23:193
19462993529,4cyclictest41-21ksoftirqd/300:16:083
19461993529,4cyclictest33-21ksoftirqd/223:41:052
19461993529,4cyclictest33-21ksoftirqd/223:32:352
19461993529,4cyclictest33-21ksoftirqd/219:56:472
19461993513,19cyclictest9605-21dump-pmu-power23:20:002
19461993513,19cyclictest18570-21ptp4l21:20:252
1946199351,2cyclictest0-21swapper/220:05:012
19460993530,3cyclictest25-21ksoftirqd/123:52:071
19460993530,3cyclictest25-21ksoftirqd/122:09:361
19460993529,4cyclictest25-21ksoftirqd/120:52:431
19460993529,4cyclictest25-21ksoftirqd/119:16:041
19460993528,4cyclictest25-21ksoftirqd/123:48:141
19460993528,4cyclictest25-21ksoftirqd/120:07:341
19460993528,4cyclictest25-21ksoftirqd/119:57:161
19459993529,4cyclictest9-21ksoftirqd/022:46:110
19459993529,4cyclictest9-21ksoftirqd/020:54:510
19459993529,4cyclictest9-21ksoftirqd/019:56:370
19459993529,4cyclictest9-21ksoftirqd/019:54:130
19459993529,4cyclictest9-21ksoftirqd/019:54:130
19459993529,4cyclictest9-21ksoftirqd/000:33:480
19459993514,18cyclictest14795-21find22:20:230
19459993514,18cyclictest14795-21find22:20:230
19459993513,19cyclictest1554-21cat00:10:010
19459993512,20cyclictest5879-21cut20:55:180
19459993512,20cyclictest4700-21cut19:45:190
19459993512,20cyclictest4700-21cut19:45:190
19459993512,20cyclictest2584-21sed20:50:000
19462993429,3cyclictest41-21ksoftirqd/321:34:133
19462993429,3cyclictest41-21ksoftirqd/320:19:593
19462993429,3cyclictest41-21ksoftirqd/319:51:203
19462993429,3cyclictest41-21ksoftirqd/319:51:203
19462993427,4cyclictest41-21ksoftirqd/319:39:353
19461993429,3cyclictest33-21ksoftirqd/221:50:132
19461993429,3cyclictest33-21ksoftirqd/200:25:542
19461993429,3cyclictest33-21ksoftirqd/200:14:312
19461993428,4cyclictest33-21ksoftirqd/223:50:052
19461993428,4cyclictest33-21ksoftirqd/221:55:512
19461993428,4cyclictest33-21ksoftirqd/220:45:352
19461993413,19cyclictest1154-21sed19:40:012
19461993412,20cyclictest16911-21expr22:25:202
19461993412,19cyclictest24432-21tr19:20:142
1946199340,3cyclictest4225-21ls00:15:122
1946199340,3cyclictest30038-21sed20:40:002
1946199340,3cyclictest25613-21ps21:35:242
1946199340,3cyclictest10333-21cpuspeed_turbos21:05:162
1946199340,22cyclictest0-21swapper/220:05:542
19460993429,3cyclictest25-21ksoftirqd/121:05:511
19460993428,4cyclictest25-21ksoftirqd/121:56:421
19460993428,4cyclictest25-21ksoftirqd/121:43:031
19460993428,4cyclictest25-21ksoftirqd/120:34:391
19460993428,4cyclictest25-21ksoftirqd/120:34:391
19460993428,4cyclictest25-21ksoftirqd/120:20:091
19460993428,4cyclictest25-21ksoftirqd/119:36:451
19460993428,3cyclictest25-21ksoftirqd/123:19:381
19460993428,3cyclictest25-21ksoftirqd/121:22:421
19460993427,4cyclictest25-21ksoftirqd/120:49:021
19459993429,3cyclictest9-21ksoftirqd/023:58:200
19459993429,3cyclictest9-21ksoftirqd/020:16:070
19459993428,4cyclictest9-21ksoftirqd/022:11:530
19459993428,3cyclictest9-21ksoftirqd/023:34:170
19459993428,3cyclictest9-21ksoftirqd/022:07:310
19459993427,4cyclictest9-21ksoftirqd/019:31:340
19459993411,20cyclictest3091-21ls00:10:270
19462993328,3cyclictest41-21ksoftirqd/323:35:093
19462993328,3cyclictest41-21ksoftirqd/320:43:173
1946299331,15cyclictest1312-21snmpd00:02:293
1946299331,15cyclictest1312-21snmpd00:02:293
19461993328,3cyclictest33-21ksoftirqd/223:46:472
19461993328,3cyclictest33-21ksoftirqd/220:51:202
19461993328,3cyclictest33-21ksoftirqd/220:33:302
19461993328,3cyclictest33-21ksoftirqd/220:33:302
19461993327,4cyclictest33-21ksoftirqd/222:00:292
19461993327,4cyclictest33-21ksoftirqd/220:16:542
19461993327,4cyclictest33-21ksoftirqd/200:05:122
1946199331,29cyclictest18918-21users23:35:282
19461993312,18cyclictest10195-21timedrift22:10:262
19461993310,20cyclictest30257-21cpuspeed_turbos20:40:142
1946199330,4cyclictest8077-21sed21:00:122
1946199330,2cyclictest178352sleep220:12:532
19460993328,3cyclictest25-21ksoftirqd/121:45:391
19460993328,3cyclictest25-21ksoftirqd/119:29:011
19460993327,4cyclictest25-21ksoftirqd/121:35:201
19460993327,4cyclictest25-21ksoftirqd/121:34:031
19460993327,4cyclictest25-21ksoftirqd/121:26:531
19460993327,4cyclictest25-21ksoftirqd/121:10:531
19460993327,4cyclictest25-21ksoftirqd/121:10:521
19460993327,4cyclictest25-21ksoftirqd/119:22:051
19460993327,3cyclictest25-21ksoftirqd/119:12:581
19459993328,3cyclictest9-21ksoftirqd/021:13:080
19459993328,3cyclictest9-21ksoftirqd/021:13:080
19459993327,4cyclictest9-21ksoftirqd/023:07:060
19459993327,4cyclictest9-21ksoftirqd/021:39:320
19459993327,3cyclictest9-21ksoftirqd/019:24:110
19462993227,3cyclictest41-21ksoftirqd/323:05:043
19462993227,3cyclictest41-21ksoftirqd/321:12:073
19462993227,3cyclictest41-21ksoftirqd/321:12:073
19462993226,4cyclictest41-21ksoftirqd/319:31:373
19462993226,3cyclictest41-21ksoftirqd/322:08:403
1946299320,19cyclictest0-21swapper/300:30:113
1946199322,24cyclictest6273-21apt-get22:05:102
1946199321,28cyclictest6076-21meminfo23:10:212
19461993210,19cyclictest3186-21smartctl23:05:172
1946199320,3cyclictest26818-21timedrift22:45:242
1946199320,3cyclictest15157-21df21:15:132
1946199320,29cyclictest11327-21cut00:30:112
19460993227,3cyclictest25-21ksoftirqd/120:43:161
19460993227,3cyclictest25-21ksoftirqd/100:12:101
19460993226,4cyclictest25-21ksoftirqd/123:02:331
19460993226,4cyclictest25-21ksoftirqd/122:51:381
19460993226,4cyclictest25-21ksoftirqd/122:10:101
19460993226,4cyclictest25-21ksoftirqd/100:31:471
19460993226,4cyclictest25-21ksoftirqd/100:06:491
1945999324,25cyclictest20858-21df22:35:140
19459993227,3cyclictest9-21ksoftirqd/023:29:450
19459993227,3cyclictest9-21ksoftirqd/023:29:450
19459993227,3cyclictest9-21ksoftirqd/023:14:320
19459993227,3cyclictest9-21ksoftirqd/020:27:260
19459993227,3cyclictest9-21ksoftirqd/020:21:490
19459993227,3cyclictest9-21ksoftirqd/019:39:290
19459993226,4cyclictest9-21ksoftirqd/023:38:020
19459993226,4cyclictest9-21ksoftirqd/023:23:540
19459993226,4cyclictest9-21ksoftirqd/023:04:120
19459993226,4cyclictest9-21ksoftirqd/022:33:270
19459993226,3cyclictest9-21ksoftirqd/020:05:440
19459993211,18cyclictest20959-21mailstats23:40:240
19459993210,19cyclictest11350-21df22:15:140
19462993125,4cyclictest41-21ksoftirqd/320:35:523
19461993126,3cyclictest33-21ksoftirqd/222:50:282
1946199310,3cyclictest4787-21meminfo19:45:202
1946199310,3cyclictest4787-21meminfo19:45:202
1946199310,3cyclictest21761-21latency_hist21:30:012
19460993126,3cyclictest25-21ksoftirqd/123:29:081
19460993126,3cyclictest25-21ksoftirqd/123:29:081
19460993126,3cyclictest25-21ksoftirqd/122:30:151
19460993126,3cyclictest25-21ksoftirqd/119:54:431
19460993126,3cyclictest25-21ksoftirqd/119:54:431
19460993126,3cyclictest25-21ksoftirqd/100:37:301
19460993125,4cyclictest25-21ksoftirqd/123:10:471
19460993125,4cyclictest25-21ksoftirqd/122:40:111
1945999317,3cyclictest19962-21df_abs21:25:150
19459993126,3cyclictest9-21ksoftirqd/000:26:520
19459993126,3cyclictest9-21ksoftirqd/000:22:110
19459993125,4cyclictest9-21ksoftirqd/022:52:490
19459993125,3cyclictest9-21ksoftirqd/022:28:090
19462993025,3cyclictest41-21ksoftirqd/300:36:393
1946199309,19cyclictest6704-21expr00:20:142
19461993025,3cyclictest33-21ksoftirqd/219:51:462
19461993025,3cyclictest33-21ksoftirqd/219:51:462
19460993025,3cyclictest25-21ksoftirqd/123:55:081
19460993025,3cyclictest25-21ksoftirqd/122:04:041
19460993024,4cyclictest25-21ksoftirqd/123:36:531
19460993024,4cyclictest25-21ksoftirqd/120:39:151
19460993024,4cyclictest25-21ksoftirqd/119:45:121
19460993024,4cyclictest25-21ksoftirqd/119:45:121
19460993024,3cyclictest25-21ksoftirqd/119:40:241
19459993025,3cyclictest9-21ksoftirqd/023:50:280
19459993025,3cyclictest9-21ksoftirqd/021:00:520
19459993024,4cyclictest9-21ksoftirqd/021:44:110
19459993024,4cyclictest9-21ksoftirqd/020:04:200
19459993023,4cyclictest9-21ksoftirqd/021:55:490
19459993011,17cyclictest8876-21mailstats23:15:250
19462992923,4cyclictest41-21ksoftirqd/300:12:153
19461992924,3cyclictest33-21ksoftirqd/222:40:092
19460992924,3cyclictest25-21ksoftirqd/123:20:111
19460992924,3cyclictest25-21ksoftirqd/122:55:101
19460992924,3cyclictest25-21ksoftirqd/122:36:091
19460992923,4cyclictest25-21ksoftirqd/122:21:141
19460992923,4cyclictest25-21ksoftirqd/122:21:141
19460992923,4cyclictest25-21ksoftirqd/121:03:381
19460992923,3cyclictest25-21ksoftirqd/100:03:491
19460992923,3cyclictest25-21ksoftirqd/100:03:491
1945999299,17cyclictest28882-21wc19:30:010
19459992924,3cyclictest9-21ksoftirqd/021:50:550
19459992924,3cyclictest9-21ksoftirqd/020:42:240
19459992924,3cyclictest9-21ksoftirqd/000:16:000
1946299283,13cyclictest17377-21ls20:10:233
19462992822,4cyclictest41-21ksoftirqd/320:33:323
19462992822,4cyclictest41-21ksoftirqd/320:33:323
19462992822,3cyclictest41-21ksoftirqd/300:23:523
19461992822,4cyclictest33-21ksoftirqd/200:35:412
19460992822,3cyclictest25-21ksoftirqd/119:34:591
1945999285,5cyclictest6022-21cron22:05:000
19459992822,4cyclictest9-21ksoftirqd/021:18:420
19459992822,4cyclictest9-21ksoftirqd/000:36:110
19462992721,4cyclictest41-21ksoftirqd/320:22:493
19460992722,3cyclictest25-21ksoftirqd/122:25:201
1945999275,3cyclictest24116-21cut23:50:000
19459992721,4cyclictest9-21ksoftirqd/019:18:080
19460992621,3cyclictest25-21ksoftirqd/123:33:061
19460992620,4cyclictest25-21ksoftirqd/120:59:411
1945999264,3cyclictest26373-21grep20:30:190
1945999264,3cyclictest26373-21grep20:30:190
1945999256,4cyclictest30712-21irqrtprio22:55:190
19460992418,3cyclictest25-21ksoftirqd/120:01:581
19460992115,4cyclictest25-21ksoftirqd/100:26:291
19460991712,3cyclictest32522-21load21:50:211
1946099159,3cyclictest6423-21apt-get00:20:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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