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2025-12-26 - 21:40
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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 Fri Dec 26, 2025 12:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
228872204170,22sleep30-21swapper/307:06:063
229172203170,22sleep10-21swapper/107:06:281
229132201168,22sleep20-21swapper/207:06:252
228892198165,22sleep00-21swapper/007:06:070
840021740,2sleep02349099cyclictest12:15:150
1835121600,3sleep22349299cyclictest10:20:202
1193721550,6sleep22349299cyclictest09:00:132
1193721550,6sleep22349299cyclictest09:00:132
23491996630,3cyclictest25-21ksoftirqd/111:45:161
23491996422,6cyclictest25-21ksoftirqd/107:55:211
23490996013,4cyclictest9-21ksoftirqd/008:20:010
23492995934,3cyclictest33-21ksoftirqd/211:20:002
23491995928,6cyclictest25-21ksoftirqd/109:05:161
23491995926,7cyclictest25-21ksoftirqd/112:35:001
23490995925,9cyclictest9-21ksoftirqd/012:35:010
23491995730,9cyclictest25-21ksoftirqd/108:35:011
23491995627,7cyclictest25-21ksoftirqd/107:10:141
23491995627,6cyclictest25-21ksoftirqd/110:50:141
23491995614,9cyclictest25-21ksoftirqd/107:50:201
23490995624,8cyclictest9-21ksoftirqd/010:40:000
23490995621,4cyclictest9-21ksoftirqd/008:05:190
23490995621,4cyclictest9-21ksoftirqd/008:05:180
17972560,2sleep01657-21latency_hist10:55:010
2349199555,7cyclictest25-21ksoftirqd/109:40:261
23490995524,6cyclictest9-21ksoftirqd/008:45:000
23490995523,9cyclictest9-21ksoftirqd/008:30:010
23490995523,8cyclictest9-21ksoftirqd/009:50:010
23492995414,9cyclictest33-21ksoftirqd/210:35:192
2349199544,8cyclictest25-21ksoftirqd/111:00:251
23490995425,3cyclictest9-21ksoftirqd/009:10:180
23490995421,6cyclictest9-21ksoftirqd/008:40:000
23492995322,4cyclictest33-21ksoftirqd/210:04:592
2349199535,9cyclictest25-21ksoftirqd/111:20:271
23490995320,6cyclictest9-21ksoftirqd/012:25:210
164122530,3sleep20-21swapper/208:00:202
2349199525,7cyclictest25-21ksoftirqd/110:30:251
2349199525,10cyclictest25-21ksoftirqd/111:35:241
2349199524,4cyclictest25-21ksoftirqd/112:35:211
23491995237,6cyclictest25-21ksoftirqd/109:00:191
23491995237,6cyclictest25-21ksoftirqd/109:00:191
23491995223,4cyclictest25-21ksoftirqd/110:00:121
23490995224,7cyclictest9-21ksoftirqd/011:04:590
23490995223,4cyclictest9-21ksoftirqd/008:55:250
23490995221,6cyclictest9-21ksoftirqd/012:35:110
23490995221,6cyclictest9-21ksoftirqd/010:40:200
23490995215,6cyclictest9-21ksoftirqd/010:05:150
2349199515,9cyclictest25-21ksoftirqd/110:10:161
2349199515,6cyclictest25-21ksoftirqd/108:45:231
2349199513,9cyclictest25-21ksoftirqd/109:50:181
23490995125,4cyclictest9-21ksoftirqd/009:35:230
23490995120,4cyclictest9-21ksoftirqd/008:10:180
2349299502,3cyclictest121rcu_preempt10:45:002
2349199505,8cyclictest25-21ksoftirqd/112:00:171
2349199505,8cyclictest25-21ksoftirqd/109:25:201
2349199505,7cyclictest25-21ksoftirqd/112:20:211
2349199505,7cyclictest25-21ksoftirqd/108:35:231
2349199505,10cyclictest25-21ksoftirqd/110:25:251
2349199505,10cyclictest25-21ksoftirqd/107:35:171
2349199504,5cyclictest25-21ksoftirqd/111:25:141
2349199504,10cyclictest25-21ksoftirqd/108:25:171
23491995022,4cyclictest25-21ksoftirqd/108:55:281
23490995023,4cyclictest9-21ksoftirqd/010:00:230
23490995018,4cyclictest9-21ksoftirqd/010:15:160
23492994910,7cyclictest33-21ksoftirqd/208:50:002
2349199496,7cyclictest25-21ksoftirqd/107:20:201
2349199496,4cyclictest25-21ksoftirqd/112:15:221
2349199495,9cyclictest25-21ksoftirqd/107:40:241
2349199494,7cyclictest25-21ksoftirqd/109:55:251
2349199493,4cyclictest25-21ksoftirqd/107:25:241
2349199492,8cyclictest25-21ksoftirqd/108:15:191
2349199491,8cyclictest25-21ksoftirqd/109:10:141
2349099492,4cyclictest9-21ksoftirqd/009:20:000
23490994920,4cyclictest9-21ksoftirqd/009:00:260
23490994920,4cyclictest9-21ksoftirqd/009:00:260
23490994917,3cyclictest9-21ksoftirqd/011:10:120
23490994915,7cyclictest9-21ksoftirqd/009:05:160
23492994825,16cyclictest33-21ksoftirqd/212:05:212
23492994818,4cyclictest33-21ksoftirqd/208:30:122
2349199485,8cyclictest25-21ksoftirqd/110:55:261
2349199485,7cyclictest25-21ksoftirqd/112:05:231
2349199484,9cyclictest25-21ksoftirqd/108:10:131
2349199484,7cyclictest25-21ksoftirqd/107:30:141
2349199484,7cyclictest25-21ksoftirqd/107:30:131
23491994828,8cyclictest25-21ksoftirqd/110:45:131
2349199482,6cyclictest25-21ksoftirqd/109:15:261
2349199482,10cyclictest25-21ksoftirqd/108:50:191
2349199480,11cyclictest25-21ksoftirqd/110:35:221
23490994819,8cyclictest9-21ksoftirqd/007:15:180
23490994818,4cyclictest9-21ksoftirqd/011:45:000
23490994817,9cyclictest9-21ksoftirqd/011:25:000
23490994817,7cyclictest9-21ksoftirqd/007:30:150
23490994817,7cyclictest9-21ksoftirqd/007:30:150
23490994813,8cyclictest9-21ksoftirqd/011:05:110
23492994730,5cyclictest33-21ksoftirqd/209:20:002
23492994725,3cyclictest33-21ksoftirqd/207:40:002
2349199477,8cyclictest25-21ksoftirqd/109:30:131
2349199475,9cyclictest25-21ksoftirqd/109:20:101
2349199474,6cyclictest25-21ksoftirqd/112:25:151
2349199473,9cyclictest25-21ksoftirqd/110:15:261
2349199473,6cyclictest25-21ksoftirqd/110:10:001
2349199472,2cyclictest121rcu_preempt09:45:221
2349199471,10cyclictest25-21ksoftirqd/111:40:161
2349199470,5cyclictest241ktimersoftd/111:55:191
23490994722,3cyclictest9-21ksoftirqd/011:35:000
23490994719,4cyclictest9-21ksoftirqd/011:25:260
23490994719,4cyclictest9-21ksoftirqd/007:20:130
23490994716,3cyclictest9-21ksoftirqd/010:20:270
23490994711,8cyclictest9-21ksoftirqd/010:50:010
2349099470,2cyclictest121rcu_preempt11:20:000
23492994627,9cyclictest33-21ksoftirqd/208:20:262
23492994613,7cyclictest33-21ksoftirqd/212:25:002
2349199465,9cyclictest25-21ksoftirqd/107:45:201
2349199465,7cyclictest25-21ksoftirqd/111:05:111
2349199464,4cyclictest25-21ksoftirqd/111:30:171
2349199463,8cyclictest25-21ksoftirqd/109:35:271
23491994630,2cyclictest25-21ksoftirqd/108:05:141
23491994630,2cyclictest25-21ksoftirqd/108:05:141
23490994617,7cyclictest9-21ksoftirqd/007:40:210
23490994616,4cyclictest9-21ksoftirqd/011:55:190
2349099461,4cyclictest9-21ksoftirqd/011:40:000
23492994527,5cyclictest33-21ksoftirqd/209:50:262
23492994524,11cyclictest33-21ksoftirqd/211:20:132
23492994511,7cyclictest33-21ksoftirqd/209:40:012
2349199454,7cyclictest25-21ksoftirqd/110:20:261
23491994529,7cyclictest25-21ksoftirqd/111:50:291
23491994529,7cyclictest25-21ksoftirqd/111:50:281
2349099452,4cyclictest9-21ksoftirqd/007:25:130
23490994518,4cyclictest9-21ksoftirqd/008:50:190
23490994516,7cyclictest9-21ksoftirqd/007:35:010
2349099451,5cyclictest121rcu_preempt09:25:130
23490994513,7cyclictest9-21ksoftirqd/010:55:260
23490994513,3cyclictest9-21ksoftirqd/008:00:170
23492994423,11cyclictest33-21ksoftirqd/210:34:572
2349199444,7cyclictest25-21ksoftirqd/108:00:171
2349199443,2cyclictest121rcu_preempt08:40:221
2349199441,6cyclictest25-21ksoftirqd/111:10:221
2349199440,7cyclictest25-21ksoftirqd/112:10:221
2349099442,5cyclictest9-21ksoftirqd/009:55:010
2349099442,2cyclictest121rcu_preempt12:13:180
23490994417,6cyclictest9-21ksoftirqd/009:20:210
23490994417,4cyclictest9-21ksoftirqd/008:45:120
2349099441,4cyclictest9-21ksoftirqd/012:00:180
23490994411,4cyclictest9-21ksoftirqd/010:30:160
2349099440,5cyclictest121rcu_preempt08:35:000
2349099440,3cyclictest121rcu_preempt09:30:260
23492994330,11cyclictest33-21ksoftirqd/208:59:592
23492994322,12cyclictest33-21ksoftirqd/208:40:162
23492994313,7cyclictest33-21ksoftirqd/207:15:002
2349299431,2cyclictest121rcu_preempt11:55:002
2349299431,2cyclictest121rcu_preempt11:55:002
23492994311,4cyclictest33-21ksoftirqd/212:35:212
2349099433,4cyclictest9-21ksoftirqd/012:20:260
23490994317,8cyclictest9-21ksoftirqd/009:55:140
23490994311,4cyclictest9-21ksoftirqd/010:10:140
2349099430,6cyclictest121rcu_preempt07:45:130
2349099430,5cyclictest121rcu_preempt12:05:180
139391430,0ptp4l401ktimersoftd/311:07:193
139391430,0ptp4l401ktimersoftd/310:24:163
23493994213,27cyclictest8825-21kworker/3:112:36:233
2349299426,5cyclictest33-21ksoftirqd/210:12:312
23492994224,9cyclictest33-21ksoftirqd/212:35:002
23492994213,7cyclictest33-21ksoftirqd/209:20:122
23492994210,5cyclictest33-21ksoftirqd/211:08:472
2349199423,7cyclictest25-21ksoftirqd/111:15:251
2349199420,6cyclictest25-21ksoftirqd/107:15:021
2349099422,2cyclictest121rcu_preempt11:45:130
1394914232,4phc2sys0-21swapper/307:10:013
139391420,0ptp4l401ktimersoftd/312:24:183
139391420,0ptp4l401ktimersoftd/311:14:183
139391420,0ptp4l401ktimersoftd/308:05:133
139391420,0ptp4l401ktimersoftd/308:05:133
139391420,0ptp4l401ktimersoftd/307:47:433
2349299416,5cyclictest33-21ksoftirqd/210:15:362
2349299414,4cyclictest33-21ksoftirqd/207:43:512
2349299414,3cyclictest0-21swapper/209:27:052
2349299413,4cyclictest33-21ksoftirqd/208:28:172
2349299412,5cyclictest33-21ksoftirqd/211:30:092
2349299412,4cyclictest33-21ksoftirqd/210:59:282
23492994123,8cyclictest33-21ksoftirqd/207:15:262
2349299411,5cyclictest33-21ksoftirqd/211:28:322
23492994111,3cyclictest33-21ksoftirqd/210:05:262
2349199412,9cyclictest25-21ksoftirqd/108:25:001
2349099413,5cyclictest121rcu_preempt08:20:280
2349099411,5cyclictest121rcu_preempt10:25:250
2349099410,2cyclictest121rcu_preempt11:50:220
2349099410,2cyclictest121rcu_preempt11:50:220
139391410,0ptp4l401ktimersoftd/310:30:273
139391410,0ptp4l401ktimersoftd/308:42:293
2349299408,5cyclictest33-21ksoftirqd/211:55:272
2349299406,6cyclictest33-21ksoftirqd/207:50:172
2349299406,4cyclictest33-21ksoftirqd/210:55:002
2349299405,4cyclictest33-21ksoftirqd/211:11:432
2349299404,5cyclictest33-21ksoftirqd/212:28:592
2349299404,4cyclictest33-21ksoftirqd/210:49:062
2349299403,5cyclictest33-21ksoftirqd/211:02:092
2349299403,4cyclictest33-21ksoftirqd/211:37:392
23492994030,2cyclictest33-21ksoftirqd/208:50:202
23492994024,4cyclictest33-21ksoftirqd/210:25:232
23492994023,9cyclictest33-21ksoftirqd/207:45:172
23492994023,7cyclictest33-21ksoftirqd/209:05:202
2349299402,17cyclictest33-21ksoftirqd/212:10:192
23492994020,8cyclictest33-21ksoftirqd/209:30:152
23492994013,6cyclictest33-21ksoftirqd/212:05:012
23492994010,4cyclictest33-21ksoftirqd/207:30:212
23492994010,4cyclictest33-21ksoftirqd/207:30:212
2349199401,7cyclictest25-21ksoftirqd/110:40:251
2349099401,5cyclictest121rcu_preempt09:40:260
139391400,0ptp4l401ktimersoftd/311:54:213
139391400,0ptp4l401ktimersoftd/311:54:213
23493993918,19cyclictest16743-21grep12:30:273
2349299396,6cyclictest33-21ksoftirqd/208:15:242
2349299395,5cyclictest33-21ksoftirqd/207:20:102
2349299394,5cyclictest33-21ksoftirqd/208:37:112
2349299394,11cyclictest33-21ksoftirqd/211:41:042
23492993924,4cyclictest33-21ksoftirqd/208:00:002
23492993917,12cyclictest33-21ksoftirqd/211:45:162
23492993910,8cyclictest33-21ksoftirqd/209:55:192
2349099392,5cyclictest121rcu_preempt08:00:010
23493993811,25cyclictest32205-21timedrift11:55:263
23492993818,9cyclictest33-21ksoftirqd/209:50:012
2349299381,5cyclictest33-21ksoftirqd/209:12:502
2349299371,5cyclictest33-21ksoftirqd/207:25:162
23492993710,7cyclictest33-21ksoftirqd/212:15:142
23490993732,3cyclictest9-21ksoftirqd/007:10:230
23493993630,4cyclictest41-21ksoftirqd/311:03:223
23493993630,4cyclictest41-21ksoftirqd/307:26:553
23493993611,4cyclictest22489-21/usr/sbin/munin08:15:213
2349299363,4cyclictest33-21ksoftirqd/209:40:062
23492993631,3cyclictest33-21ksoftirqd/208:10:002
23492993631,3cyclictest33-21ksoftirqd/208:10:002
23492993630,4cyclictest33-21ksoftirqd/208:14:322
23490993632,2cyclictest9-21ksoftirqd/007:50:140
139391360,14ptp4l401ktimersoftd/307:23:293
23493993530,3cyclictest41-21ksoftirqd/309:15:113
23493993530,3cyclictest41-21ksoftirqd/307:35:133
23493993529,4cyclictest41-21ksoftirqd/308:56:373
139391350,8ptp4l0-21swapper/308:39:313
23493993429,3cyclictest41-21ksoftirqd/310:57:353
23493993429,3cyclictest41-21ksoftirqd/309:54:323
23493993429,3cyclictest41-21ksoftirqd/307:41:083
23493993428,4cyclictest41-21ksoftirqd/310:12:383
23493993428,4cyclictest41-21ksoftirqd/309:30:313
23493993428,4cyclictest41-21ksoftirqd/309:00:353
23493993428,4cyclictest41-21ksoftirqd/309:00:353
23493993412,3cyclictest32390-21sendmail_mailtr09:40:253
23493993412,3cyclictest25162-21cat08:20:143
23493993411,3cyclictest18615-21/usr/sbin/munin11:30:103
23493993410,3cyclictest26532-21fschecks_count07:15:163
2349399337,8cyclictest30524-21cron09:40:003
23493993327,4cyclictest41-21ksoftirqd/310:37:263
23493993327,4cyclictest41-21ksoftirqd/310:09:503
23493993327,4cyclictest41-21ksoftirqd/307:59:163
139391330,0ptp4l401ktimersoftd/308:46:413
23493993227,3cyclictest41-21ksoftirqd/311:27:323
23493993226,4cyclictest41-21ksoftirqd/309:26:143
23493993226,4cyclictest41-21ksoftirqd/309:23:133
23493993226,4cyclictest41-21ksoftirqd/308:14:333
139391320,0ptp4l401ktimersoftd/307:52:323
23493993127,2cyclictest139391ptp4l10:50:283
23493993126,3cyclictest41-21ksoftirqd/311:15:143
23493993126,3cyclictest41-21ksoftirqd/308:30:123
23493993125,4cyclictest41-21ksoftirqd/312:28:023
23493993125,4cyclictest41-21ksoftirqd/308:54:533
23493993025,3cyclictest41-21ksoftirqd/309:58:163
23493993025,3cyclictest41-21ksoftirqd/307:34:333
23493993025,3cyclictest41-21ksoftirqd/307:34:323
23493993024,4cyclictest41-21ksoftirqd/312:07:403
23493993024,4cyclictest41-21ksoftirqd/310:49:413
23493993024,4cyclictest41-21ksoftirqd/310:25:313
23493993024,4cyclictest41-21ksoftirqd/309:47:233
23493992924,3cyclictest41-21ksoftirqd/311:41:043
23493992924,3cyclictest41-21ksoftirqd/309:12:363
23493992923,4cyclictest41-21ksoftirqd/312:18:273
23493992923,4cyclictest41-21ksoftirqd/310:44:243
23493992923,4cyclictest41-21ksoftirqd/310:02:283
23493992923,4cyclictest41-21ksoftirqd/309:07:403
23493992823,3cyclictest41-21ksoftirqd/311:39:273
23493992823,3cyclictest41-21ksoftirqd/310:16:483
23493992722,3cyclictest41-21ksoftirqd/308:26:163
23493992721,4cyclictest41-21ksoftirqd/308:04:473
23493992520,3cyclictest41-21ksoftirqd/312:02:223
139391250,0ptp4l401ktimersoftd/312:10:133
139391240,0ptp4l401ktimersoftd/311:20:063
139391230,1ptp4l401ktimersoftd/311:45:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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