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2026-05-01 - 18:50
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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 rackdslot4.osadl.org (updated Fri May 01, 2026 12:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
207282233166,22sleep00-21swapper/007:08:090
138591204170,23phc2sys0-21swapper/307:08:343
206382201169,21sleep20-21swapper/207:06:582
206472200167,22sleep10-21swapper/107:07:061
134991970,9getstats0-21swapper/310:45:493
21171996227,4cyclictest25-21ksoftirqd/108:50:001
2117299611,3cyclictest1319-21snmpd09:52:432
138491610,1ptp4l401ktimersoftd/308:18:373
21171996025,4cyclictest25-21ksoftirqd/112:20:011
138491590,0ptp4l401ktimersoftd/307:58:493
21170995829,4cyclictest9-21ksoftirqd/012:20:130
163062580,3sleep00-21swapper/008:05:130
21170995726,3cyclictest9-21ksoftirqd/012:30:010
21171995623,9cyclictest25-21ksoftirqd/107:20:201
21170995627,3cyclictest9-21ksoftirqd/009:30:270
21171995526,4cyclictest25-21ksoftirqd/110:35:191
21170995526,4cyclictest9-21ksoftirqd/007:35:140
21170995525,4cyclictest9-21ksoftirqd/012:35:210
60792540,1sleep10-21swapper/111:00:141
21171995423,4cyclictest25-21ksoftirqd/112:20:121
21171995313,4cyclictest25-21ksoftirqd/111:45:241
21170995325,4cyclictest9-21ksoftirqd/010:00:110
21170995318,4cyclictest9-21ksoftirqd/009:45:250
21171995223,4cyclictest25-21ksoftirqd/109:00:131
21171995213,4cyclictest25-21ksoftirqd/108:10:261
21170995224,4cyclictest9-21ksoftirqd/011:00:150
21171995114,11cyclictest25-21ksoftirqd/108:30:121
21171995113,4cyclictest25-21ksoftirqd/112:10:231
21170995122,3cyclictest9-21ksoftirqd/009:55:190
21170995121,3cyclictest9-21ksoftirqd/008:35:260
21170995023,4cyclictest9-21ksoftirqd/008:45:270
21170995020,3cyclictest9-21ksoftirqd/012:10:230
57232490,2sleep20-21swapper/208:50:012
238822490,1sleep30-21swapper/307:15:143
21171994913,6cyclictest25-21ksoftirqd/110:55:121
21171994910,8cyclictest25-21ksoftirqd/111:20:241
21170994923,3cyclictest9-21ksoftirqd/009:50:110
21170994920,3cyclictest9-21ksoftirqd/010:25:130
21170994918,4cyclictest9-21ksoftirqd/011:15:180
21170994917,4cyclictest9-21ksoftirqd/008:10:180
138491490,0ptp4l401ktimersoftd/311:02:293
2117199485,10cyclictest25-21ksoftirqd/110:10:011
21170994821,3cyclictest9-21ksoftirqd/010:30:190
21170994819,3cyclictest9-21ksoftirqd/007:55:150
21170994810,9cyclictest9-21ksoftirqd/011:20:180
21173994712,5cyclictest41-21ksoftirqd/308:35:143
2117199478,8cyclictest25-21ksoftirqd/111:05:131
2117199477,9cyclictest25-21ksoftirqd/110:25:151
21171994727,3cyclictest25-21ksoftirqd/110:15:241
21171994713,10cyclictest25-21ksoftirqd/107:45:131
21170994719,3cyclictest9-21ksoftirqd/007:10:160
21170994718,3cyclictest9-21ksoftirqd/009:00:000
21170994717,3cyclictest9-21ksoftirqd/010:50:100
21170994713,4cyclictest9-21ksoftirqd/007:45:160
2117199463,2cyclictest25-21ksoftirqd/111:30:001
21171994627,8cyclictest25-21ksoftirqd/112:00:001
2117199462,3cyclictest25-21ksoftirqd/111:35:151
21170994616,4cyclictest9-21ksoftirqd/011:10:120
21171994538,4cyclictest25-21ksoftirqd/110:00:001
2117099456,4cyclictest18488-21latency_hist10:20:000
2117099453,9cyclictest9-21ksoftirqd/012:30:160
21170994518,3cyclictest9-21ksoftirqd/008:20:160
21170994516,4cyclictest9-21ksoftirqd/011:55:210
2117099451,3cyclictest121rcu_preempt09:20:190
138491450,0ptp4l401ktimersoftd/311:25:323
2117199447,9cyclictest25-21ksoftirqd/109:20:111
21171994438,4cyclictest25-21ksoftirqd/107:20:001
21171994431,4cyclictest25-21ksoftirqd/108:20:011
21171994429,3cyclictest25-21ksoftirqd/112:05:161
21171994429,3cyclictest25-21ksoftirqd/112:05:161
21171994420,3cyclictest25-21ksoftirqd/109:40:121
21171994410,9cyclictest25-21ksoftirqd/111:15:271
21170994431,3cyclictest9-21ksoftirqd/008:40:210
21170994431,3cyclictest9-21ksoftirqd/008:40:210
2117099442,3cyclictest6799-21ps12:05:180
2117099442,3cyclictest6799-21ps12:05:180
21170994415,4cyclictest9-21ksoftirqd/007:30:180
21170994415,4cyclictest9-21ksoftirqd/007:30:180
21170994414,4cyclictest9-21ksoftirqd/010:20:200
21170994413,3cyclictest9-21ksoftirqd/007:50:130
21170994412,5cyclictest9-21ksoftirqd/009:19:590
21170994411,3cyclictest9-21ksoftirqd/011:50:210
21173994312,10cyclictest41-21ksoftirqd/311:50:263
2117199436,10cyclictest25-21ksoftirqd/109:50:221
21171994338,3cyclictest25-21ksoftirqd/109:19:591
21171994337,3cyclictest25-21ksoftirqd/108:40:001
21171994331,4cyclictest25-21ksoftirqd/111:10:211
21171994328,4cyclictest25-21ksoftirqd/108:40:141
21171994328,4cyclictest25-21ksoftirqd/108:40:141
21171994320,10cyclictest25-21ksoftirqd/107:10:141
2117199431,2cyclictest25-21ksoftirqd/112:25:121
2117199430,3cyclictest25-21ksoftirqd/107:30:221
2117199430,3cyclictest25-21ksoftirqd/107:30:221
21170994317,3cyclictest9-21ksoftirqd/009:40:140
21170994314,3cyclictest9-21ksoftirqd/007:15:160
2117099431,3cyclictest223-21systemd-journal09:10:000
21170994313,3cyclictest9-21ksoftirqd/008:50:130
138491430,0ptp4l401ktimersoftd/312:39:573
138491430,0ptp4l401ktimersoftd/311:16:413
138491430,0ptp4l401ktimersoftd/307:44:393
50798420,2rtkit-daemon0-21swapper/107:52:541
2117199423,7cyclictest25-21ksoftirqd/110:31:371
21171994237,3cyclictest25-21ksoftirqd/109:00:011
21171994227,4cyclictest25-21ksoftirqd/112:35:001
2117199421,3cyclictest121rcu_preempt10:50:231
2117199421,2cyclictest121rcu_preempt08:20:131
2117199420,2cyclictest121rcu_preempt12:40:001
2117099427,6cyclictest9-21ksoftirqd/009:25:130
21170994230,5cyclictest9-21ksoftirqd/011:30:000
21170994229,4cyclictest9-21ksoftirqd/008:30:130
21170994219,3cyclictest9-21ksoftirqd/011:38:170
21170994210,3cyclictest9-21ksoftirqd/010:40:220
138491420,0ptp4l401ktimersoftd/309:50:023
21171994136,3cyclictest25-21ksoftirqd/112:05:011
21171994136,3cyclictest25-21ksoftirqd/112:05:001
21171994135,3cyclictest25-21ksoftirqd/109:40:001
21171994135,3cyclictest25-21ksoftirqd/109:15:001
2117199413,3cyclictest121rcu_preempt10:45:141
2117199413,3cyclictest121rcu_preempt08:50:231
2117199412,3cyclictest121rcu_preempt07:40:121
2117199412,3cyclictest121rcu_preempt07:25:241
2117199411,3cyclictest121rcu_preempt08:00:231
2117199410,2cyclictest121rcu_preempt10:20:181
138491410,2ptp4l401ktimersoftd/308:02:053
138491410,0ptp4l401ktimersoftd/307:51:363
21173994025,12cyclictest41-21ksoftirqd/311:30:113
21172994034,3cyclictest33-21ksoftirqd/208:55:002
2117199403,3cyclictest121rcu_preempt09:30:221
21171994028,4cyclictest25-21ksoftirqd/111:55:001
2117199402,3cyclictest121rcu_preempt10:00:271
2117199402,3cyclictest121rcu_preempt09:05:181
2117199402,3cyclictest121rcu_preempt08:25:251
2117199402,3cyclictest121rcu_preempt07:55:171
2117199402,3cyclictest121rcu_preempt07:35:131
21171994011,9cyclictest25-21ksoftirqd/108:05:231
2117099404,3cyclictest20904-21bc08:15:110
21170994034,3cyclictest9-21ksoftirqd/012:05:000
21170994034,3cyclictest9-21ksoftirqd/012:05:000
21170994028,3cyclictest9-21ksoftirqd/011:10:000
21170994026,3cyclictest9-21ksoftirqd/011:40:160
138491400,1ptp4l401ktimersoftd/311:37:403
21173993916,4cyclictest41-21ksoftirqd/307:45:253
21173993915,18cyclictest41-21ksoftirqd/308:05:203
21172993934,3cyclictest33-21ksoftirqd/212:30:012
2117199394,3cyclictest121rcu_preempt11:30:221
21171993934,3cyclictest25-21ksoftirqd/110:40:151
2117199391,3cyclictest121rcu_preempt09:45:141
2117099393,3cyclictest28309-21cat10:40:010
21170993924,4cyclictest9-21ksoftirqd/009:35:260
2117099391,3cyclictest121rcu_preempt10:05:200
2117299380,5cyclictest21453-21tune2fs11:30:122
21171993833,3cyclictest25-21ksoftirqd/110:10:181
21171993827,4cyclictest25-21ksoftirqd/109:25:211
2117199381,2cyclictest121rcu_preempt11:40:151
2117099389,3cyclictest9-21ksoftirqd/008:25:150
2117099389,3cyclictest9-21ksoftirqd/007:25:210
21170993827,4cyclictest9-21ksoftirqd/009:00:200
21170993826,3cyclictest9-21ksoftirqd/011:50:000
21170993820,4cyclictest9-21ksoftirqd/009:10:250
138491380,0ptp4l401ktimersoftd/312:22:193
138491380,0ptp4l401ktimersoftd/308:12:523
21173993731,4cyclictest41-21ksoftirqd/312:11:513
21172993731,4cyclictest33-21ksoftirqd/211:02:022
21172993731,4cyclictest33-21ksoftirqd/208:01:222
2117299370,4cyclictest23344-21/usr/sbin/munin11:35:252
2117299370,4cyclictest19605-21missed_timers08:10:202
2117099378,4cyclictest9-21ksoftirqd/007:20:220
21170993731,3cyclictest9-21ksoftirqd/008:05:000
21170993725,5cyclictest9-21ksoftirqd/010:45:140
2117099372,3cyclictest121rcu_preempt11:30:100
2117099370,3cyclictest121rcu_preempt12:15:120
21173993631,3cyclictest41-21ksoftirqd/312:05:003
21173993631,3cyclictest41-21ksoftirqd/312:05:003
21173993631,3cyclictest41-21ksoftirqd/308:50:013
21173993630,4cyclictest41-21ksoftirqd/311:24:023
21173993630,4cyclictest41-21ksoftirqd/310:05:193
21173993630,4cyclictest41-21ksoftirqd/309:14:413
21173993630,4cyclictest41-21ksoftirqd/308:27:263
21173993630,3cyclictest41-21ksoftirqd/309:29:593
21173993624,9cyclictest41-21ksoftirqd/310:30:243
21172993631,3cyclictest33-21ksoftirqd/209:24:462
21172993630,4cyclictest33-21ksoftirqd/211:13:212
21172993630,4cyclictest33-21ksoftirqd/209:06:252
2117299360,4cyclictest10894-21cut12:15:002
21170993632,2cyclictest9-21ksoftirqd/010:10:120
21170993631,3cyclictest9-21ksoftirqd/010:55:140
21170993631,3cyclictest9-21ksoftirqd/007:40:150
21173993531,2cyclictest41-21ksoftirqd/309:19:593
21173993530,3cyclictest41-21ksoftirqd/311:45:143
21173993530,3cyclictest41-21ksoftirqd/309:20:113
21173993530,3cyclictest41-21ksoftirqd/307:25:123
21173993530,3cyclictest41-21ksoftirqd/307:20:243
21173993529,4cyclictest41-21ksoftirqd/312:29:003
21173993529,4cyclictest41-21ksoftirqd/310:18:143
21173993529,4cyclictest41-21ksoftirqd/308:24:413
2117399350,3cyclictest121rcu_preempt11:10:243
21172993530,3cyclictest33-21ksoftirqd/211:52:292
21172993530,3cyclictest33-21ksoftirqd/210:32:312
21172993530,3cyclictest33-21ksoftirqd/208:30:102
21172993529,4cyclictest33-21ksoftirqd/212:05:532
21172993529,4cyclictest33-21ksoftirqd/212:05:532
21172993529,4cyclictest33-21ksoftirqd/209:16:252
21172993529,3cyclictest33-21ksoftirqd/207:49:012
21172993528,5cyclictest33-21ksoftirqd/207:25:122
2117299352,31cyclictest0-21swapper/209:35:012
21172993512,20cyclictest28724-21expr09:35:132
21172993510,22cyclictest16250-21cat11:20:152
2117299350,4cyclictest30820-21/usr/sbin/munin10:45:242
21173993429,3cyclictest41-21ksoftirqd/312:35:003
21173993429,3cyclictest41-21ksoftirqd/312:10:003
21173993429,3cyclictest41-21ksoftirqd/312:10:003
21173993429,3cyclictest41-21ksoftirqd/311:00:003
21173993429,3cyclictest41-21ksoftirqd/310:35:163
21173993429,3cyclictest41-21ksoftirqd/307:35:593
21173993428,4cyclictest41-21ksoftirqd/310:41:213
21173993428,4cyclictest41-21ksoftirqd/310:12:133
21173993428,4cyclictest41-21ksoftirqd/309:31:333
21173993428,4cyclictest41-21ksoftirqd/308:33:083
21173993428,3cyclictest41-21ksoftirqd/310:50:023
21173993427,4cyclictest41-21ksoftirqd/309:05:063
21172993429,3cyclictest33-21ksoftirqd/210:26:092
21172993429,3cyclictest33-21ksoftirqd/209:04:522
21172993428,4cyclictest33-21ksoftirqd/212:34:492
21172993428,4cyclictest33-21ksoftirqd/209:13:032
21172993428,4cyclictest33-21ksoftirqd/207:13:092
21172993413,18cyclictest15072-21ptp4l-jitter12:20:222
21172993412,20cyclictest1614-21sh07:35:132
2117299340,4cyclictest5117-21taskset10:55:242
2117299340,4cyclictest28217-21cat10:40:012
21173993330,2cyclictest41-21ksoftirqd/307:15:003
21173993328,3cyclictest41-21ksoftirqd/309:44:183
21173993328,3cyclictest41-21ksoftirqd/309:40:003
21173993328,3cyclictest41-21ksoftirqd/308:55:013
21173993328,3cyclictest41-21ksoftirqd/308:42:353
21173993328,3cyclictest41-21ksoftirqd/308:42:353
21173993327,4cyclictest41-21ksoftirqd/311:41:553
21173993327,4cyclictest41-21ksoftirqd/310:02:233
21173993327,3cyclictest41-21ksoftirqd/309:00:013
21172993327,4cyclictest33-21ksoftirqd/211:19:572
21172993327,4cyclictest33-21ksoftirqd/210:52:522
21172993327,4cyclictest33-21ksoftirqd/208:55:332
21172993327,4cyclictest33-21ksoftirqd/207:42:172
21172993327,4cyclictest33-21ksoftirqd/207:22:352
21172993312,18cyclictest28757-21sh11:45:152
21172993311,19cyclictest8379-21/usr/sbin/munin11:05:152
2117299330,3cyclictest10959-21taskset12:15:082
21173993229,2cyclictest41-21ksoftirqd/312:18:123
21173993226,3cyclictest41-21ksoftirqd/310:21:513
21173993214,9cyclictest41-21ksoftirqd/309:00:193
2117299329,20cyclictest15383-21grep10:10:252
2117299329,20cyclictest11449-21df_abs07:55:112
2117299328,21cyclictest21450-21/usr/sbin/munin12:35:162
21172993227,3cyclictest33-21ksoftirqd/211:29:542
21172993226,4cyclictest33-21ksoftirqd/212:00:432
21172993226,4cyclictest33-21ksoftirqd/212:00:432
21172993226,4cyclictest33-21ksoftirqd/210:18:132
21172993226,4cyclictest33-21ksoftirqd/209:58:002
21172993226,4cyclictest33-21ksoftirqd/207:31:582
21172993226,4cyclictest33-21ksoftirqd/207:31:582
21172993211,19cyclictest21120-21ls08:15:132
21172993210,19cyclictest32494-21sed09:40:242
2117299320,4cyclictest24233-21perl07:15:172
21173993126,3cyclictest41-21ksoftirqd/311:55:163
21173993126,3cyclictest41-21ksoftirqd/310:00:003
21173993125,4cyclictest41-21ksoftirqd/310:26:453
21173993125,3cyclictest41-21ksoftirqd/311:05:143
2117299319,19cyclictest847-21/usr/sbin/munin08:40:262
2117299319,19cyclictest847-21/usr/sbin/munin08:40:262
2117299319,19cyclictest27448-21cat11:40:262
2117299319,19cyclictest26547-21cat08:25:172
2117299318,21cyclictest13326-21sshd10:09:522
2117299318,20cyclictest2357-21sed09:45:212
21172993126,3cyclictest33-21ksoftirqd/210:42:542
21172993126,3cyclictest33-21ksoftirqd/210:20:462
21172993126,3cyclictest33-21ksoftirqd/208:21:572
21173993026,3cyclictest41-21ksoftirqd/309:45:003
21173993026,2cyclictest41-21ksoftirqd/307:30:183
21173993026,2cyclictest41-21ksoftirqd/307:30:183
2117299308,20cyclictest17049-21latency08:05:192
21172993025,3cyclictest33-21ksoftirqd/211:59:492
21172993012,15cyclictest321ktimersoftd/207:53:002
21172993011,17cyclictest32135-21proc_pri08:35:222
2117299285,3cyclictest23618-21cpuspeed_turbos09:25:122
2117299276,3cyclictest10219-21switchtime10:00:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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