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2026-04-30 - 10:20
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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 Thu Apr 30, 2026 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
211552204175,19sleep10-21swapper/119:09:361
211552204175,19sleep10-21swapper/119:09:351
138591204169,24phc2sys0-21swapper/319:06:493
138591204169,24phc2sys0-21swapper/319:06:493
208822201167,22sleep00-21swapper/019:06:000
208822201167,22sleep00-21swapper/019:06:000
209722200167,21sleep20-21swapper/219:07:112
209722200167,21sleep20-21swapper/219:07:112
18222770,2sleep20-21swapper/220:40:142
192892680,2sleep219142-21cstates00:20:142
2149199621,28cyclictest12529-21/usr/sbin/munin00:00:283
21489996128,4cyclictest25-21ksoftirqd/123:15:011
2148899607,42cyclictest7251-21grep22:00:130
2148899607,42cyclictest7251-21grep22:00:130
2148899602,16cyclictest25500-21awk20:20:250
2148899597,6cyclictest31171-21latency_hist19:29:590
253582570,5sleep233-21ksoftirqd/220:20:242
21489995725,4cyclictest25-21ksoftirqd/119:50:001
21489995724,4cyclictest25-21ksoftirqd/121:45:281
2149199560,23cyclictest276502sleep323:02:043
21489995626,4cyclictest25-21ksoftirqd/121:15:111
21489995625,4cyclictest25-21ksoftirqd/122:10:141
21489995623,10cyclictest25-21ksoftirqd/120:25:011
2149199551,23cyclictest1319-21snmpd19:23:513
21489995522,4cyclictest25-21ksoftirqd/100:30:111
2148899557,7cyclictest8624-21apt-get19:50:010
2148899556,6cyclictest22086-21fschecks_count21:20:150
2119725534,14sleep20-21swapper/219:10:002
21489995421,10cyclictest25-21ksoftirqd/122:30:001
21489995418,5cyclictest25-21ksoftirqd/123:40:181
2148899547,5cyclictest11535-21sed19:55:000
2148899545,6cyclictest18084-21cat20:05:260
138491540,1ptp4l391rcuc/323:20:223
2149199531,25cyclictest18904-21date00:20:003
2149199531,24cyclictest24600-21sort21:25:163
21489995325,4cyclictest25-21ksoftirqd/123:00:231
21489995322,4cyclictest25-21ksoftirqd/119:15:261
2148899537,5cyclictest4401-21sed19:40:150
21489995220,4cyclictest25-21ksoftirqd/121:20:251
21489995217,8cyclictest25-21ksoftirqd/121:10:001
21489995216,4cyclictest25-21ksoftirqd/119:30:221
21489995216,4cyclictest25-21ksoftirqd/119:25:251
2148899526,5cyclictest9245-21cstates20:55:130
168682520,2sleep00-21swapper/022:30:160
21491995133,4cyclictest18604-21cron22:35:003
2149199510,21cyclictest1319-21snmpd21:19:163
21489995120,3cyclictest25-21ksoftirqd/122:10:011
21489995118,10cyclictest25-21ksoftirqd/121:50:241
21489995117,9cyclictest25-21ksoftirqd/100:10:151
2148899517,6cyclictest7318-21sed20:50:180
2148899516,5cyclictest31717-21expr21:40:120
2148899512,5cyclictest0-21swapper/023:20:140
21489995020,3cyclictest25-21ksoftirqd/121:40:211
2148899507,5cyclictest23620-21sed22:50:180
2148899506,5cyclictest4318-21cstates20:45:130
257102490,2sleep00-21swapper/023:00:120
21489994918,4cyclictest25-21ksoftirqd/119:35:191
2148899496,6cyclictest23088-21sed20:15:240
2148899495,5cyclictest1932-21expr20:40:140
2148899495,5cyclictest14199-21cstates21:05:140
2148899492,6cyclictest0-21swapper/020:00:000
21491994843,3cyclictest23057-21fschecks_count22:50:143
21489994820,3cyclictest25-21ksoftirqd/121:25:131
21489994819,8cyclictest25-21ksoftirqd/121:30:121
21489994819,7cyclictest25-21ksoftirqd/119:20:201
2148899486,5cyclictest26413-21dpkg20:25:000
2148899485,6cyclictest24311-21cstates19:15:140
2148899485,6cyclictest20385-21phc2sys21:15:210
2148899480,11cyclictest15379-21gzip00:09:390
21489994720,4cyclictest25-21ksoftirqd/121:35:141
21489994719,7cyclictest25-21ksoftirqd/120:25:131
21489994715,4cyclictest25-21ksoftirqd/122:50:001
21489994711,4cyclictest25-21ksoftirqd/123:20:131
2148999470,2cyclictest121rcu_preempt23:20:001
2148899475,6cyclictest16194-21df_abs00:10:130
2148899474,6cyclictest28028-21date19:20:240
21489994618,3cyclictest25-21ksoftirqd/100:00:121
21489994615,8cyclictest25-21ksoftirqd/120:35:281
21489994615,10cyclictest25-21ksoftirqd/100:20:141
21489994612,5cyclictest25-21ksoftirqd/121:00:201
2148899465,5cyclictest27680-21grep21:30:200
21489994515,9cyclictest25-21ksoftirqd/123:55:001
21489994514,7cyclictest25-21ksoftirqd/120:05:131
21489994514,4cyclictest25-21ksoftirqd/122:00:201
21489994514,4cyclictest25-21ksoftirqd/122:00:201
2148899457,6cyclictest14892-21irqrtprio20:00:180
21491994424,16cyclictest41-21ksoftirqd/323:36:593
21489994416,8cyclictest25-21ksoftirqd/119:55:131
21489994412,7cyclictest25-21ksoftirqd/120:00:251
138491440,0ptp4l401ktimersoftd/319:45:123
2148999438,9cyclictest25-21ksoftirqd/122:50:101
21489994315,3cyclictest25-21ksoftirqd/119:10:131
2148999430,2cyclictest121rcu_preempt22:40:211
2148899432,5cyclictest101ktimersoftd/020:30:160
21489994237,3cyclictest25-21ksoftirqd/120:15:001
2148899425,6cyclictest12494-21latency_hist00:00:010
138491420,33ptp4l0-21swapper/319:10:013
138491420,0ptp4l401ktimersoftd/319:17:443
2148999412,3cyclictest121rcu_preempt23:10:001
21489994118,11cyclictest25-21ksoftirqd/120:45:271
138491410,0ptp4l401ktimersoftd/323:43:533
138491410,0ptp4l401ktimersoftd/321:11:493
2148999406,8cyclictest25-21ksoftirqd/119:50:011
21489994036,2cyclictest25-21ksoftirqd/123:40:011
21489994029,3cyclictest25-21ksoftirqd/120:40:251
2148999400,2cyclictest25-21ksoftirqd/120:50:181
2148899405,7cyclictest28703-21latency_hist23:10:010
21491993934,2cyclictest11654-21sh23:55:003
21491993920,16cyclictest41-21ksoftirqd/323:58:593
2149199390,36cyclictest16333-21apt-config21:10:013
21490993934,3cyclictest33-21ksoftirqd/223:00:002
21489993935,2cyclictest25-21ksoftirqd/122:00:011
21489993924,4cyclictest25-21ksoftirqd/100:40:011
21489993924,3cyclictest25-21ksoftirqd/122:30:191
21489993913,8cyclictest25-21ksoftirqd/120:15:131
21489993911,4cyclictest25-21ksoftirqd/123:30:141
2148899393,5cyclictest223-21systemd-journal00:01:170
21491993831,4cyclictest18040-21cron00:15:013
21490993831,4cyclictest33-21ksoftirqd/221:56:042
21489993833,3cyclictest25-21ksoftirqd/123:50:001
21489993832,3cyclictest25-21ksoftirqd/120:30:171
21489993831,4cyclictest25-21ksoftirqd/123:28:291
2148899385,8cyclictest22231-21cstates00:30:130
21491993732,3cyclictest41-21ksoftirqd/319:40:113
2149199371,33cyclictest18739-21latency_hist20:10:003
21491993713,21cyclictest28526-21latency_hist23:10:013
2149199370,24cyclictest1319-21snmpd20:29:293
21490993732,3cyclictest33-21ksoftirqd/200:40:012
21490993731,4cyclictest33-21ksoftirqd/222:54:212
21490993731,4cyclictest33-21ksoftirqd/200:08:302
21490993730,4cyclictest33-21ksoftirqd/221:46:132
2148999374,2cyclictest121rcu_preempt20:55:241
2148999373,3cyclictest121rcu_preempt00:10:011
21489993732,3cyclictest25-21ksoftirqd/121:10:141
21489993732,3cyclictest25-21ksoftirqd/119:40:141
21489993732,3cyclictest25-21ksoftirqd/100:00:011
2148999372,3cyclictest121rcu_preempt22:20:001
2148999370,3cyclictest121rcu_preempt23:00:001
21491993630,4cyclictest41-21ksoftirqd/322:39:053
21491993630,4cyclictest41-21ksoftirqd/319:29:393
21491993613,20cyclictest1324-21date19:35:013
21490993631,3cyclictest33-21ksoftirqd/222:08:312
21490993631,3cyclictest33-21ksoftirqd/221:12:512
21490993630,4cyclictest33-21ksoftirqd/222:43:582
21490993630,4cyclictest33-21ksoftirqd/222:24:162
21490993630,4cyclictest33-21ksoftirqd/221:44:362
21490993630,4cyclictest33-21ksoftirqd/219:42:062
21490993630,4cyclictest11597-21wc19:55:112
21490993629,4cyclictest33-21ksoftirqd/222:15:492
21490993629,4cyclictest33-21ksoftirqd/200:13:112
2148999365,3cyclictest121rcu_preempt22:40:001
21489993631,3cyclictest25-21ksoftirqd/122:20:271
21489993631,3cyclictest25-21ksoftirqd/100:30:001
2148899365,6cyclictest4293-21expr21:50:130
21488993630,4cyclictest9-21ksoftirqd/021:00:350
138491360,0ptp4l401ktimersoftd/322:23:543
21491993530,3cyclictest41-21ksoftirqd/323:10:103
21491993530,3cyclictest41-21ksoftirqd/320:39:223
21491993514,18cyclictest31416-21/usr/sbin/munin21:40:183
2149199351,30cyclictest23972-21cpuspeed20:20:143
21491993512,20cyclictest24299-21date00:35:003
21491993512,20cyclictest13072-21latency_hist22:20:003
21491993512,20cyclictest11473-21sed19:55:013
21491993511,20cyclictest7601-21wc20:50:193
2149199350,24cyclictest1319-21snmpd21:35:023
21490993530,3cyclictest33-21ksoftirqd/221:35:422
21490993529,4cyclictest33-21ksoftirqd/223:25:492
21490993529,4cyclictest33-21ksoftirqd/221:08:302
21490993529,4cyclictest33-21ksoftirqd/220:47:122
21490993529,4cyclictest33-21ksoftirqd/219:51:232
21490993529,4cyclictest33-21ksoftirqd/219:26:002
21490993528,4cyclictest33-21ksoftirqd/221:21:062
2149099351,31cyclictest0-21swapper/222:25:132
21488993529,4cyclictest9-21ksoftirqd/021:57:500
2149199348,23cyclictest1319-21snmpd21:55:483
21491993429,3cyclictest41-21ksoftirqd/321:00:103
21491993428,4cyclictest41-21ksoftirqd/323:48:053
21491993428,4cyclictest41-21ksoftirqd/323:26:233
21491993428,4cyclictest41-21ksoftirqd/322:29:503
21491993428,4cyclictest41-21ksoftirqd/321:23:593
21491993414,18cyclictest5019-21latency_hist23:35:003
2149199341,27cyclictest19493-21apt-get22:40:103
21491993411,20cyclictest28748-21cat21:35:003
21491993410,21cyclictest11515-21tail22:10:213
21490993429,3cyclictest33-21ksoftirqd/219:20:012
21490993428,4cyclictest33-21ksoftirqd/221:54:232
21490993428,4cyclictest33-21ksoftirqd/221:18:412
21490993428,4cyclictest33-21ksoftirqd/220:17:512
21490993428,4cyclictest33-21ksoftirqd/220:04:362
21490993427,5cyclictest33-21ksoftirqd/222:03:382
21490993427,5cyclictest33-21ksoftirqd/222:03:382
21489993430,3cyclictest25-21ksoftirqd/100:20:001
2148899345,6cyclictest9-21ksoftirqd/022:23:540
21488993428,4cyclictest9-21ksoftirqd/023:37:510
21488993428,4cyclictest9-21ksoftirqd/022:18:200
21488993428,4cyclictest9-21ksoftirqd/022:12:420
21488993428,4cyclictest9-21ksoftirqd/021:38:160
21488993428,4cyclictest9-21ksoftirqd/021:10:080
21488993428,4cyclictest9-21ksoftirqd/020:14:400
21488993428,4cyclictest9-21ksoftirqd/019:38:260
21488993428,4cyclictest9-21ksoftirqd/019:31:480
21488993428,4cyclictest9-21ksoftirqd/000:17:510
21491993328,3cyclictest41-21ksoftirqd/323:16:033
21491993328,3cyclictest41-21ksoftirqd/320:32:373
21491993327,4cyclictest41-21ksoftirqd/322:08:483
21491993327,4cyclictest41-21ksoftirqd/320:18:293
21491993327,4cyclictest41-21ksoftirqd/320:10:023
21491993326,4cyclictest41-21ksoftirqd/320:02:523
21491993312,18cyclictest8975-21/usr/sbin/munin20:55:133
2149199330,31cyclictest0-21swapper/323:00:003
2149199330,29cyclictest3998-21apt-get21:50:123
21490993328,3cyclictest33-21ksoftirqd/223:32:102
21490993328,3cyclictest33-21ksoftirqd/221:03:592
21490993328,3cyclictest33-21ksoftirqd/200:16:192
21490993327,4cyclictest33-21ksoftirqd/223:48:482
21490993327,4cyclictest33-21ksoftirqd/223:11:012
21490993327,4cyclictest33-21ksoftirqd/221:32:052
21490993327,4cyclictest33-21ksoftirqd/220:25:572
21490993327,4cyclictest33-21ksoftirqd/220:07:132
21490993327,3cyclictest33-21ksoftirqd/219:46:002
21490993326,5cyclictest33-21ksoftirqd/223:19:402
21488993327,4cyclictest9-21ksoftirqd/021:46:520
21491993211,19cyclictest1469-21/usr/sbin/munin21:45:283
21491993210,19cyclictest21052-21chrt00:23:523
2149199320,29cyclictest3666-21sshd19:39:513
21490993227,3cyclictest33-21ksoftirqd/223:04:172
21490993227,3cyclictest33-21ksoftirqd/220:10:122
21490993227,3cyclictest33-21ksoftirqd/200:32:372
21490993226,4cyclictest33-21ksoftirqd/223:59:192
21490993226,4cyclictest33-21ksoftirqd/222:46:382
21490993226,4cyclictest33-21ksoftirqd/222:30:342
21490993226,4cyclictest33-21ksoftirqd/220:36:452
21490993226,4cyclictest33-21ksoftirqd/200:25:472
21488993226,4cyclictest9-21ksoftirqd/022:57:480
21488993226,4cyclictest9-21ksoftirqd/022:08:210
21488993226,4cyclictest9-21ksoftirqd/020:37:120
21488993226,4cyclictest9-21ksoftirqd/000:29:260
2148899321,5cyclictest29469-21iostat23:10:170
2149199317,20cyclictest4451-21sh20:45:153
21491993125,4cyclictest41-21ksoftirqd/322:00:583
21491993125,4cyclictest41-21ksoftirqd/322:00:583
21490993125,4cyclictest33-21ksoftirqd/219:38:322
21490993125,4cyclictest33-21ksoftirqd/219:31:462
21490993124,4cyclictest33-21ksoftirqd/222:35:312
21488993126,3cyclictest9-21ksoftirqd/022:30:000
21491993025,3cyclictest41-21ksoftirqd/320:41:393
21491993024,4cyclictest41-21ksoftirqd/300:08:353
21491993023,5cyclictest41-21ksoftirqd/319:57:103
21490993025,3cyclictest33-21ksoftirqd/223:51:422
21490993025,3cyclictest33-21ksoftirqd/223:21:042
21490993025,3cyclictest33-21ksoftirqd/220:33:352
21490993025,3cyclictest33-21ksoftirqd/200:03:382
21488993024,4cyclictest9-21ksoftirqd/000:36:400
21491992922,4cyclictest41-21ksoftirqd/322:45:033
21490992924,3cyclictest33-21ksoftirqd/220:52:502
21490992923,4cyclictest33-21ksoftirqd/221:25:392
21488992923,4cyclictest9-21ksoftirqd/023:43:490
21488992824,2cyclictest9-21ksoftirqd/023:30:220
21488992822,4cyclictest9-21ksoftirqd/023:15:090
21488992822,4cyclictest9-21ksoftirqd/022:40:310
21490992722,3cyclictest33-21ksoftirqd/223:37:322
21490992722,3cyclictest33-21ksoftirqd/223:08:562
21490992721,4cyclictest33-21ksoftirqd/223:41:502
2148899277,5cyclictest9087-21cat23:50:000
21488992722,3cyclictest9-21ksoftirqd/021:27:110
21488992721,4cyclictest9-21ksoftirqd/023:50:350
21488992721,4cyclictest9-21ksoftirqd/000:21:350
2148899270,5cyclictest0-21swapper/022:45:390
2149199261,22cyclictest1319-21snmpd00:36:233
2149199260,23cyclictest1319-21snmpd00:27:463
21490992621,3cyclictest33-21ksoftirqd/220:59:562
21490992620,4cyclictest33-21ksoftirqd/219:20:252
21488992622,3cyclictest9-21ksoftirqd/022:35:370
21488992620,4cyclictest9-21ksoftirqd/019:15:000
21488992419,3cyclictest9-21ksoftirqd/023:27:210
21490992318,3cyclictest33-21ksoftirqd/222:11:032
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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