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2026-01-11 - 23:13
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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 rackdslot3.osadl.org (updated Sun Jan 11, 2026 12:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491206168,27phc2sys0-21swapper/307:06:283
48242205172,22sleep20-21swapper/207:07:092
47412202169,22sleep10-21swapper/107:06:031
50112200167,22sleep00-21swapper/007:09:280
1408921420,3sleep0534399cyclictest10:50:140
139391940,71ptp4l0-21swapper/307:10:003
534599614,16cyclictest8460-21/usr/sbin/munin09:30:172
534599565,11cyclictest30044-21date12:35:002
534599555,18cyclictest30419-21cat10:15:202
534599534,10cyclictest6830-21needreboot11:40:212
534599533,11cyclictest19372-21cut11:00:202
534599523,17cyclictest10613-21/usr/sbin/munin08:25:252
207892520,2sleep30-21swapper/307:40:183
534599514,19cyclictest22275-21cat07:45:002
534599504,8cyclictest23521-21apt-get11:10:122
5344995022,3cyclictest25-21ksoftirqd/110:05:251
534599495,14cyclictest21081-21ls12:10:192
534599494,9cyclictest3016-21apt-get09:20:132
534599494,14cyclictest16625-21df08:40:142
534599485,16cyclictest3375-21grep11:35:122
534599484,7cyclictest1046-21ls10:20:262
534599483,7cyclictest11432-21apt-get10:45:132
534599474,16cyclictest1300-21snmpd09:47:312
534599454,9cyclictest17601-21/usr/sbin/munin12:05:232
534599452,16cyclictest18985-21timedrift07:35:272
534499459,10cyclictest25-21ksoftirqd/108:10:181
534599443,11cyclictest4287-21dpkg10:30:102
534499442,3cyclictest121rcu_preempt11:45:001
5344994415,4cyclictest25-21ksoftirqd/107:15:291
534599434,8cyclictest654-21apt-config11:30:012
534599432,7cyclictest7750-21apt-get07:15:132
5344994338,3cyclictest10224-21cron11:50:001
139391430,0ptp4l401ktimersoftd/311:00:243
139391430,0ptp4l401ktimersoftd/310:41:003
5344994225,3cyclictest25-21ksoftirqd/107:10:211
5344994214,6cyclictest25-21ksoftirqd/109:00:001
5344994212,9cyclictest25-21ksoftirqd/109:55:291
139391420,0ptp4l401ktimersoftd/311:23:043
139391420,0ptp4l401ktimersoftd/307:35:153
534599414,7cyclictest3019-21meminfo08:10:192
534599413,8cyclictest22826-21users08:50:272
534599413,16cyclictest23951-21perl08:55:152
534499418,9cyclictest25-21ksoftirqd/112:20:011
5344994114,7cyclictest25-21ksoftirqd/107:25:141
5344994111,4cyclictest25-21ksoftirqd/107:25:001
5344994110,4cyclictest25-21ksoftirqd/111:10:001
139391410,0ptp4l401ktimersoftd/309:14:073
534599402,7cyclictest16171-21apt-get10:55:112
534499407,2cyclictest25-21ksoftirqd/110:45:211
534499406,3cyclictest25-21ksoftirqd/108:30:011
5344994035,3cyclictest25-21ksoftirqd/112:24:591
5344994035,3cyclictest25-21ksoftirqd/111:35:001
5344994034,3cyclictest25-21ksoftirqd/111:30:011
5344994010,8cyclictest25-21ksoftirqd/107:55:221
5344994010,4cyclictest25-21ksoftirqd/108:50:141
5344994010,4cyclictest25-21ksoftirqd/107:45:131
534399402,35cyclictest5496-21grep10:30:210
534599393,7cyclictest28944-21users07:55:272
534499398,4cyclictest25-21ksoftirqd/110:55:011
534499397,5cyclictest25-21ksoftirqd/109:25:161
534499396,8cyclictest25-21ksoftirqd/112:30:251
5344993911,7cyclictest25-21ksoftirqd/109:15:001
134491390,2getstats0-21swapper/309:15:373
534499389,8cyclictest25-21ksoftirqd/107:35:261
534499389,3cyclictest25-21ksoftirqd/109:00:261
534499388,9cyclictest25-21ksoftirqd/112:35:141
534499384,2cyclictest121rcu_preempt09:35:171
5344993834,2cyclictest25-21ksoftirqd/111:40:001
5344993810,7cyclictest25-21ksoftirqd/111:55:231
5344993810,4cyclictest25-21ksoftirqd/111:10:131
534599373,7cyclictest1592-21meminfo09:15:212
534499378,8cyclictest25-21ksoftirqd/110:30:221
534499377,7cyclictest25-21ksoftirqd/110:10:131
534499376,3cyclictest25-21ksoftirqd/108:35:141
534499374,3cyclictest121rcu_preempt10:20:241
534499374,2cyclictest121rcu_preempt08:40:171
5344993733,2cyclictest25-21ksoftirqd/110:35:251
5344993732,3cyclictest25-21ksoftirqd/112:10:111
5344993732,3cyclictest25-21ksoftirqd/111:55:001
5344993732,3cyclictest25-21ksoftirqd/111:25:001
5344993732,3cyclictest25-21ksoftirqd/109:24:591
5344993725,10cyclictest25-21ksoftirqd/108:30:191
534499371,8cyclictest25-21ksoftirqd/108:05:171
5343993715,19cyclictest1317-21runrttasks07:35:210
5343993713,22cyclictest32086-21swap11:25:260
5343993713,21cyclictest19923-21dpkg07:40:000
534699361,2cyclictest121rcu_preempt11:31:203
5345993630,4cyclictest33-21ksoftirqd/208:05:092
5345993629,5cyclictest33-21ksoftirqd/212:19:182
534499367,8cyclictest25-21ksoftirqd/108:20:161
534499367,4cyclictest25-21ksoftirqd/111:00:141
534499367,4cyclictest25-21ksoftirqd/110:55:151
534499366,4cyclictest25-21ksoftirqd/110:00:121
534499365,8cyclictest25-21ksoftirqd/109:05:201
534499365,8cyclictest25-21ksoftirqd/109:05:201
534499364,2cyclictest121rcu_preempt08:00:141
534499363,9cyclictest25-21ksoftirqd/107:30:221
5344993631,3cyclictest25-21ksoftirqd/110:45:001
5344993630,3cyclictest25-21ksoftirqd/109:50:001
5344993630,3cyclictest25-21ksoftirqd/107:55:001
534499361,8cyclictest25-21ksoftirqd/110:15:201
5344993617,3cyclictest25-21ksoftirqd/108:15:261
5343993631,3cyclictest9-21ksoftirqd/007:35:000
5343993629,4cyclictest9-21ksoftirqd/009:46:580
5343993613,20cyclictest20126-21cstates09:55:150
5343993612,21cyclictest20988-21latency_hist08:50:010
5346993529,4cyclictest41-21ksoftirqd/312:24:523
5346993529,4cyclictest41-21ksoftirqd/308:15:053
5346993527,6cyclictest41-21ksoftirqd/309:10:013
5346993527,6cyclictest41-21ksoftirqd/309:10:003
534499358,9cyclictest25-21ksoftirqd/109:45:261
534499355,8cyclictest25-21ksoftirqd/107:45:011
534499353,3cyclictest121rcu_preempt09:30:121
5344993531,2cyclictest25-21ksoftirqd/108:45:211
5344993530,3cyclictest25-21ksoftirqd/111:19:001
534499352,11cyclictest25-21ksoftirqd/110:25:291
5346993429,3cyclictest41-21ksoftirqd/307:57:273
5346993428,4cyclictest41-21ksoftirqd/311:37:593
5346993428,4cyclictest41-21ksoftirqd/311:18:383
5346993412,19cyclictest22316-21cat12:15:013
5345993427,4cyclictest33-21ksoftirqd/208:20:172
5344993431,2cyclictest25-21ksoftirqd/112:05:191
534499342,2cyclictest121rcu_preempt12:25:241
534499341,3cyclictest121rcu_preempt09:40:201
534399343,28cyclictest12483-21cron07:25:000
5343993429,3cyclictest9-21ksoftirqd/008:35:110
5343993429,3cyclictest21340-21grep11:05:160
5343993428,4cyclictest9-21ksoftirqd/011:33:510
5343993428,4cyclictest9-21ksoftirqd/009:50:290
5343993415,17cyclictest22127-21cat12:15:010
5343993413,19cyclictest4648-21timerwakeupswit09:20:280
5343993412,19cyclictest31829-21proc_pri09:10:220
5343993410,3cyclictest26290-21sed12:25:200
5343993410,3cyclictest17696-21readlink08:40:230
5346993328,3cyclictest41-21ksoftirqd/310:13:343
5346993328,3cyclictest41-21ksoftirqd/309:50:103
5346993328,3cyclictest41-21ksoftirqd/308:28:333
5346993327,4cyclictest41-21ksoftirqd/310:26:103
5346993327,4cyclictest41-21ksoftirqd/309:28:103
5346993327,3cyclictest41-21ksoftirqd/310:15:043
5346993310,3cyclictest22685-21expr07:45:133
5345993328,3cyclictest33-21ksoftirqd/207:30:272
5345993327,4cyclictest33-21ksoftirqd/210:40:342
5345993327,4cyclictest33-21ksoftirqd/209:43:332
5345993327,4cyclictest33-21ksoftirqd/209:25:322
5345993327,4cyclictest33-21ksoftirqd/209:04:142
5345993327,4cyclictest33-21ksoftirqd/208:36:582
5345993327,4cyclictest33-21ksoftirqd/208:31:122
5345993326,4cyclictest33-21ksoftirqd/210:05:112
534499335,2cyclictest121rcu_preempt12:00:201
5344993322,3cyclictest25-21ksoftirqd/109:15:161
5343993327,4cyclictest9-21ksoftirqd/010:00:530
5343993327,4cyclictest7584-21sh09:30:010
5343993326,4cyclictest9-21ksoftirqd/010:16:580
5343993312,18cyclictest2329-21hwlatdetect10:25:180
5343993311,3cyclictest13032-21df_abs07:25:140
5343993310,3cyclictest32244-21expr08:05:130
5346993227,3cyclictest41-21ksoftirqd/311:45:173
5346993227,3cyclictest41-21ksoftirqd/308:50:103
5346993227,3cyclictest41-21ksoftirqd/307:20:063
5346993227,3cyclictest41-21ksoftirqd/307:20:003
5346993226,4cyclictest41-21ksoftirqd/312:16:023
5346993226,4cyclictest41-21ksoftirqd/307:50:143
5346993226,4cyclictest41-21ksoftirqd/307:34:503
5346993226,4cyclictest41-21ksoftirqd/307:28:483
5346993226,3cyclictest41-21ksoftirqd/312:34:133
5346993213,17cyclictest30644-21/usr/sbin/munin11:25:153
5346993211,3cyclictest31700-21ls12:35:273
5345993226,4cyclictest33-21ksoftirqd/210:11:492
5345993226,4cyclictest33-21ksoftirqd/207:20:332
534399329,3cyclictest31101-21timerandwakeup08:00:280
534399328,3cyclictest28120-21grep10:10:210
5343993228,3cyclictest9-21ksoftirqd/007:10:140
5343993227,3cyclictest9-21ksoftirqd/010:23:070
5343993226,4cyclictest9-21ksoftirqd/011:24:040
5343993226,4cyclictest9-21ksoftirqd/009:08:250
5343993226,4cyclictest9-21ksoftirqd/009:08:250
534399322,5cyclictest90602sleep010:40:120
5343993225,5cyclictest9-21ksoftirqd/011:55:410
5343993211,3cyclictest5949-21expr11:40:130
5343993211,3cyclictest4166-21cut11:35:180
5343993211,3cyclictest15227-21/usr/sbin/munin12:00:140
5343993211,2cyclictest207-21systemd-journal10:10:000
5343993210,3cyclictest25717-21cat09:00:000
534699319,3cyclictest32159-21cat08:05:133
5346993126,3cyclictest41-21ksoftirqd/312:07:563
5346993126,3cyclictest41-21ksoftirqd/309:20:113
5346993126,3cyclictest41-21ksoftirqd/308:56:493
5346993126,3cyclictest41-21ksoftirqd/308:01:263
5346993125,4cyclictest41-21ksoftirqd/310:33:493
5346993125,4cyclictest41-21ksoftirqd/309:31:313
5346993125,4cyclictest41-21ksoftirqd/308:39:403
534699311,6cyclictest0-21swapper/309:45:123
5346993111,2cyclictest12642-21latency_hist11:55:003
534699311,10cyclictest1300-21snmpd11:42:543
5346993110,3cyclictest6841-21cpuspeed_turbos10:35:133
5346993110,3cyclictest21823-21cut11:05:193
5345993126,3cyclictest33-21ksoftirqd/210:52:452
5345993126,3cyclictest33-21ksoftirqd/209:11:082
5345993125,4cyclictest33-21ksoftirqd/212:23:392
534599311,28cyclictest3358-21kworker/2:008:19:132
534399318,2cyclictest2230-21grep09:15:280
534399317,3cyclictest30099-21/usr/sbin/munin12:35:240
534399317,3cyclictest24243-21sed11:10:190
5343993126,3cyclictest9-21ksoftirqd/012:24:540
5343993126,3cyclictest9-21ksoftirqd/008:29:190
5343993126,3cyclictest9-21ksoftirqd/007:45:100
5343993125,4cyclictest9-21ksoftirqd/012:33:280
5343993125,4cyclictest9-21ksoftirqd/011:18:550
5343993125,4cyclictest9-21ksoftirqd/010:59:090
5343993125,4cyclictest9-21ksoftirqd/010:46:570
5343993110,2cyclictest25747-21irqstats07:50:190
534699303,8cyclictest549-21in:imuxsock10:07:353
534699302,6cyclictest2518-21gnome-shell10:51:583
5346993025,3cyclictest41-21ksoftirqd/311:56:303
5346993014,14cyclictest19767-21missed_timers08:45:213
5346993010,3cyclictest18412-21date11:00:013
5345993024,4cyclictest33-21ksoftirqd/211:55:512
5345993024,4cyclictest33-21ksoftirqd/210:35:402
5345993024,4cyclictest33-21ksoftirqd/208:49:592
5345993024,4cyclictest33-21ksoftirqd/208:01:412
534399308,3cyclictest2651-21irqrtprio08:10:180
534399308,3cyclictest1317-21runrttasks07:55:090
534399306,4cyclictest1-21systemd09:40:230
5343993024,4cyclictest9-21ksoftirqd/008:54:500
5343993024,4cyclictest9-21ksoftirqd/008:16:140
5343993024,3cyclictest9-21ksoftirqd/007:17:020
139391300,7ptp4l401ktimersoftd/310:47:043
5346992924,3cyclictest41-21ksoftirqd/309:55:013
5346992924,3cyclictest41-21ksoftirqd/308:13:133
5346992923,4cyclictest41-21ksoftirqd/309:35:123
534599295,9cyclictest11945-21users09:35:282
534599295,10cyclictest207-21systemd-journal11:07:472
534599293,10cyclictest20244-21df_abs09:55:162
5345992923,4cyclictest33-21ksoftirqd/212:38:042
5345992923,4cyclictest33-21ksoftirqd/211:28:322
5345992923,4cyclictest33-21ksoftirqd/211:19:452
5345992923,4cyclictest33-21ksoftirqd/210:29:462
534599292,14cyclictest8102-21apt-get11:45:112
5343992924,3cyclictest9-21ksoftirqd/011:03:260
5343992923,4cyclictest9-21ksoftirqd/009:00:110
139391290,7ptp4l401ktimersoftd/310:24:173
139391290,7ptp4l401ktimersoftd/310:01:193
534699289,3cyclictest12572-21/usr/sbin/munin09:40:163
534699288,3cyclictest25358-21/usr/sbin/munin12:25:243
5346992823,3cyclictest41-21ksoftirqd/308:30:303
5346992822,4cyclictest41-21ksoftirqd/308:42:043
5345992823,3cyclictest33-21ksoftirqd/211:24:432
5345992822,4cyclictest33-21ksoftirqd/209:07:392
5345992822,4cyclictest33-21ksoftirqd/209:07:392
534399286,3cyclictest19629-21sshd12:08:460
5343992823,3cyclictest9-21ksoftirqd/009:38:220
5343992823,3cyclictest9-21ksoftirqd/008:22:470
5343992822,4cyclictest9-21ksoftirqd/008:31:580
5346992722,3cyclictest41-21ksoftirqd/312:04:553
5346992722,3cyclictest41-21ksoftirqd/311:10:103
5346992722,3cyclictest41-21ksoftirqd/308:22:443
5345992723,3cyclictest33-21ksoftirqd/212:00:202
5345992722,3cyclictest33-21ksoftirqd/207:46:142
5345992721,4cyclictest33-21ksoftirqd/212:26:482
5343992722,3cyclictest9-21ksoftirqd/012:16:470
5343992722,3cyclictest9-21ksoftirqd/011:54:070
5343992721,4cyclictest9-21ksoftirqd/011:45:420
5343992720,4cyclictest9-21ksoftirqd/009:31:070
5345992621,3cyclictest33-21ksoftirqd/207:52:212
534399261,4cyclictest6666-21apt-get10:35:110
5345992519,4cyclictest33-21ksoftirqd/207:28:582
5345992418,4cyclictest33-21ksoftirqd/210:01:192
139391240,0ptp4l401ktimersoftd/309:00:193
534599233,17cyclictest7508-21latency_hist07:15:012
5345992015,3cyclictest33-21ksoftirqd/211:52:222
5345992010,7cyclictest19304-21vmstat09:50:272
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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