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2026-08-19 - 07:41
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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 Wed Aug 19, 2026 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
291492206172,22sleep10-21swapper/119:08:481
290882204170,23sleep20-21swapper/219:08:002
139491204160,33phc2sys0-21swapper/319:06:103
291232203170,22sleep00-21swapper/019:08:260
703921650,6sleep02953699cyclictest21:45:030
1394021640,7sleep02953699cyclictest23:05:180
1586621620,6sleep02953699cyclictest20:55:170
238722650,6sleep12953799cyclictest23:25:211
29537996223,4cyclictest25-21ksoftirqd/121:00:171
29539995918,10cyclictest41-21ksoftirqd/323:50:013
29539995824,3cyclictest41-21ksoftirqd/323:40:013
29536995830,6cyclictest9-21ksoftirqd/022:30:010
29536995725,4cyclictest9-21ksoftirqd/022:35:140
29536995723,3cyclictest9-21ksoftirqd/023:50:000
21432570,2sleep20-21swapper/222:40:202
2953799565,8cyclictest25649-21latency_hist20:10:001
139391560,1ptp4l401ktimersoftd/320:41:063
29539995515,5cyclictest41-21ksoftirqd/323:10:193
29539995515,4cyclictest41-21ksoftirqd/322:54:593
2953799554,9cyclictest27968-21cat20:15:001
254512550,1sleep20-21swapper/221:15:162
29539995410,9cyclictest41-21ksoftirqd/322:00:213
2953799544,6cyclictest9549-21tune2fs19:35:161
2953799535,6cyclictest7761-21grep22:50:271
2953799534,6cyclictest16472-21latency_hist22:05:011
29536995319,4cyclictest9-21ksoftirqd/019:58:320
2953799525,6cyclictest32607-21cut23:45:151
2953799525,6cyclictest31482-21tune2fs22:35:171
2953799524,6cyclictest9563-21expr21:50:131
2953799524,6cyclictest9563-21expr21:50:121
2953799524,6cyclictest18456-21tune2fs23:15:151
2953799523,6cyclictest8814-21run-parts00:00:261
29537995217,4cyclictest25-21ksoftirqd/121:30:161
29536995219,4cyclictest9-21ksoftirqd/021:35:000
2953999519,8cyclictest41-21ksoftirqd/319:30:223
29539995119,4cyclictest41-21ksoftirqd/323:50:193
29539995118,9cyclictest41-21ksoftirqd/300:05:173
29539995118,4cyclictest41-21ksoftirqd/323:55:153
29539995118,4cyclictest41-21ksoftirqd/323:19:093
2953899511,9cyclictest33-21ksoftirqd/220:20:162
2953799515,7cyclictest4660-21grep21:40:131
2953799514,6cyclictest4132-21cut20:30:191
2953799513,8cyclictest19088-21cpuspeed_turbos22:10:151
2953799513,7cyclictest15886-21grep20:55:171
2953799513,6cyclictest9201-21strings20:40:231
2953799513,6cyclictest1636-21sed20:25:191
2953799512,6cyclictest241ktimersoftd/123:05:121
29536995126,9cyclictest9-21ksoftirqd/023:00:000
29536995123,4cyclictest9-21ksoftirqd/020:30:000
29536995119,4cyclictest9-21ksoftirqd/000:00:240
29536995115,5cyclictest9-21ksoftirqd/022:00:010
2953999509,4cyclictest41-21ksoftirqd/320:30:143
29539995024,4cyclictest41-21ksoftirqd/320:00:233
2953899506,4cyclictest33-21ksoftirqd/223:35:252
29538995018,3cyclictest33-21ksoftirqd/222:10:012
2953799504,7cyclictest8162-21ls21:45:231
2953799504,6cyclictest30233-21tr23:40:131
2953799504,6cyclictest24079-21grep22:20:141
2953799504,6cyclictest19544-21cut19:55:201
2953799503,6cyclictest1880-21irqrtprio22:40:191
2953799502,8cyclictest30288-21sed19:10:191
2953799502,6cyclictest2256-21cstates21:35:151
29536995032,7cyclictest9-21ksoftirqd/019:40:000
29536995021,3cyclictest9-21ksoftirqd/000:05:290
29536995015,5cyclictest9-21ksoftirqd/000:20:190
134391500,1getstats15346-1kworker/3:0H19:55:213
29539994917,4cyclictest41-21ksoftirqd/321:45:233
29538994915,7cyclictest33-21ksoftirqd/221:00:192
2953799494,6cyclictest21019-21switchtime00:25:261
2953799494,6cyclictest12676-21cstates00:10:161
2953799494,6cyclictest12676-21cstates00:10:151
2953799493,6cyclictest30951-21sed22:35:011
2953799492,6cyclictest8009-21latency_hist20:40:011
2953799492,6cyclictest8009-21latency_hist20:40:011
2953799492,6cyclictest11735-21irqrtprio23:00:201
2953799491,6cyclictest26463-21cpuspeed_turbos22:25:151
2953799490,8cyclictest25-21ksoftirqd/120:45:181
2953799490,6cyclictest241ktimersoftd/119:25:241
2953799490,6cyclictest241ktimersoftd/119:25:241
29536994930,8cyclictest9-21ksoftirqd/023:40:010
29536994927,10cyclictest9-21ksoftirqd/019:55:000
29536994919,4cyclictest9-21ksoftirqd/022:10:250
29536994916,7cyclictest9-21ksoftirqd/021:20:170
29536994916,6cyclictest9-21ksoftirqd/022:05:130
2953699491,3cyclictest121rcu_preempt00:15:010
2953699491,3cyclictest121rcu_preempt00:15:010
139391490,0ptp4l401ktimersoftd/322:25:233
134391490,4getstats2953999cyclictest00:25:213
2953999487,8cyclictest41-21ksoftirqd/323:05:123
2953899483,5cyclictest33-21ksoftirqd/220:45:012
2953799484,7cyclictest13800-21sed20:50:191
2953799483,7cyclictest4786-21ptp4l-jitter22:45:241
2953799483,7cyclictest18178-21expr22:05:271
2953799483,6cyclictest16246-21/usr/sbin/munin19:50:141
2953799483,6cyclictest11782-21expr19:40:161
2953799482,6cyclictest22559-21/usr/sbin/munin21:10:141
29536994830,8cyclictest9-21ksoftirqd/019:25:110
29536994830,8cyclictest9-21ksoftirqd/019:25:110
29536994829,8cyclictest9-21ksoftirqd/021:40:180
29536994828,9cyclictest9-21ksoftirqd/021:15:190
29536994828,8cyclictest9-21ksoftirqd/020:05:290
29536994817,4cyclictest9-21ksoftirqd/019:25:000
29536994816,4cyclictest9-21ksoftirqd/000:35:230
29536994813,6cyclictest9-21ksoftirqd/022:30:190
29539994716,3cyclictest41-21ksoftirqd/322:20:153
29538994733,11cyclictest33-21ksoftirqd/200:00:002
29538994715,4cyclictest33-21ksoftirqd/223:15:012
2953899470,4cyclictest8659-21kworker/2:019:50:252
2953799474,5cyclictest25-21ksoftirqd/100:40:011
2953799473,6cyclictest241ktimersoftd/121:20:221
2953799471,5cyclictest241ktimersoftd/119:30:161
2953799471,2cyclictest0-21swapper/123:20:221
29536994728,8cyclictest9-21ksoftirqd/021:15:000
29536994728,8cyclictest9-21ksoftirqd/019:15:000
29536994724,12cyclictest9-21ksoftirqd/023:40:180
2953699472,3cyclictest9-21ksoftirqd/022:45:000
29536994718,5cyclictest9-21ksoftirqd/023:15:190
29536994717,6cyclictest9-21ksoftirqd/023:20:170
2953999468,4cyclictest41-21ksoftirqd/321:00:183
2953999464,17cyclictest41-21ksoftirqd/320:55:213
29538994623,8cyclictest33-21ksoftirqd/222:50:282
2953799463,6cyclictest29684-21latency_hist23:40:011
2953799463,6cyclictest15830-21cstates23:10:141
2953699464,3cyclictest121rcu_preempt20:50:130
29536994630,4cyclictest9-21ksoftirqd/022:20:260
29536994626,7cyclictest9-21ksoftirqd/023:25:230
29536994626,11cyclictest9-21ksoftirqd/020:50:010
29536994625,8cyclictest9-21ksoftirqd/020:20:160
29536994616,5cyclictest9-21ksoftirqd/023:00:250
29536994615,4cyclictest9-21ksoftirqd/020:40:180
2953699460,2cyclictest121rcu_preempt00:35:000
29539994533,2cyclictest41-21ksoftirqd/322:40:013
29539994517,3cyclictest41-21ksoftirqd/319:49:303
2953899454,3cyclictest23770-21diskstats20:05:202
29538994514,3cyclictest33-21ksoftirqd/222:50:002
29538994510,7cyclictest33-21ksoftirqd/220:50:282
2953799454,7cyclictest22997-21ls00:30:211
2953799452,6cyclictest13899-21cpu19:45:141
29536994528,7cyclictest9-21ksoftirqd/021:05:250
29536994528,5cyclictest9-21ksoftirqd/020:35:250
29536994528,5cyclictest9-21ksoftirqd/020:35:250
29536994528,5cyclictest9-21ksoftirqd/019:15:140
29536994525,9cyclictest9-21ksoftirqd/021:00:200
29536994525,7cyclictest9-21ksoftirqd/023:55:270
2953699452,2cyclictest121rcu_preempt20:00:140
29536994519,8cyclictest9-21ksoftirqd/021:50:120
29536994519,8cyclictest9-21ksoftirqd/021:50:120
29536994513,5cyclictest9-21ksoftirqd/020:10:210
29536994511,4cyclictest9-21ksoftirqd/020:15:180
2953999442,3cyclictest121rcu_preempt21:25:013
29538994415,5cyclictest33-21ksoftirqd/222:20:182
2953799444,6cyclictest8680-21expr22:55:131
29536994425,5cyclictest9-21ksoftirqd/022:15:280
29536994414,6cyclictest9-21ksoftirqd/020:30:190
29536994414,6cyclictest9-21ksoftirqd/019:45:150
139391440,0ptp4l401ktimersoftd/319:40:323
139391440,0ptp4l401ktimersoftd/319:29:563
139391440,0ptp4l401ktimersoftd/319:29:563
139391440,0ptp4l401ktimersoftd/300:11:513
139391440,0ptp4l401ktimersoftd/300:11:503
139391440,0ptp4l401ktimersoftd/300:01:493
2953999432,7cyclictest41-21ksoftirqd/319:20:153
29539994311,4cyclictest41-21ksoftirqd/323:00:213
29538994320,16cyclictest33-21ksoftirqd/223:50:002
2953799434,6cyclictest10130-21cat00:05:171
2953799432,5cyclictest25-21ksoftirqd/121:15:131
29536994326,5cyclictest9-21ksoftirqd/023:30:150
29536994326,5cyclictest9-21ksoftirqd/022:50:270
29536994325,8cyclictest9-21ksoftirqd/000:25:200
29536994321,4cyclictest9-21ksoftirqd/021:25:190
29536994312,4cyclictest9-21ksoftirqd/019:30:210
2953999427,8cyclictest41-21ksoftirqd/300:30:253
2953999425,3cyclictest121rcu_preempt21:30:163
2953899424,3cyclictest121rcu_preempt21:10:002
29538994233,6cyclictest33-21ksoftirqd/220:50:012
29538994222,17cyclictest33-21ksoftirqd/221:15:002
29538994211,4cyclictest33-21ksoftirqd/222:00:152
29537994226,7cyclictest25-21ksoftirqd/120:20:271
2953799420,6cyclictest901-21systemctl19:15:251
29536994227,4cyclictest9-21ksoftirqd/022:45:230
29536994225,5cyclictest9-21ksoftirqd/023:55:000
29536994224,8cyclictest9-21ksoftirqd/023:10:290
29536994224,5cyclictest9-21ksoftirqd/022:00:190
29536994224,5cyclictest9-21ksoftirqd/000:20:000
2953699420,2cyclictest121rcu_preempt21:35:180
57898410,7rtkit-daemon0-21swapper/122:19:091
2953999418,7cyclictest41-21ksoftirqd/322:31:273
2953999416,3cyclictest121rcu_preempt19:10:223
29539994118,11cyclictest41-21ksoftirqd/300:15:173
29539994110,4cyclictest41-21ksoftirqd/319:35:263
29539994110,3cyclictest41-21ksoftirqd/322:15:223
2953999410,3cyclictest121rcu_preempt23:20:343
29538994135,3cyclictest33-21ksoftirqd/200:30:012
29538994128,4cyclictest33-21ksoftirqd/223:20:342
2953899411,4cyclictest121rcu_preempt21:40:242
2953899410,5cyclictest33-21ksoftirqd/221:30:142
2953899409,3cyclictest33-21ksoftirqd/220:05:012
2953899405,7cyclictest33-21ksoftirqd/222:35:192
29538994026,4cyclictest33-21ksoftirqd/223:05:272
29538994024,5cyclictest33-21ksoftirqd/219:30:002
29538994024,5cyclictest33-21ksoftirqd/219:30:002
2953899401,8cyclictest0-21swapper/220:25:132
2953899401,7cyclictest121rcu_preempt23:00:002
29538994016,5cyclictest33-21ksoftirqd/221:20:222
29538994013,8cyclictest33-21ksoftirqd/221:50:002
29536994024,4cyclictest9-21ksoftirqd/019:40:190
2953999396,2cyclictest121rcu_preempt19:50:183
2953999395,6cyclictest41-21ksoftirqd/323:40:183
2953999394,2cyclictest121rcu_preempt20:20:203
29539993934,3cyclictest41-21ksoftirqd/322:05:193
29539993934,3cyclictest41-21ksoftirqd/320:50:253
29539993933,3cyclictest41-21ksoftirqd/320:40:003
29539993933,3cyclictest41-21ksoftirqd/320:39:593
29539993926,3cyclictest41-21ksoftirqd/323:30:183
29539993926,3cyclictest41-21ksoftirqd/322:00:013
2953899396,9cyclictest33-21ksoftirqd/223:30:002
2953899395,5cyclictest33-21ksoftirqd/200:40:002
29538993935,3cyclictest33-21ksoftirqd/222:20:002
29538993927,3cyclictest33-21ksoftirqd/221:35:282
29538993918,9cyclictest33-21ksoftirqd/223:40:182
29538993917,5cyclictest33-21ksoftirqd/220:13:342
2953799394,7cyclictest24331-21kworker/1:220:00:271
29537993921,4cyclictest25-21ksoftirqd/123:30:361
139391390,0ptp4l401ktimersoftd/323:27:303
2953999389,8cyclictest41-21ksoftirqd/322:45:223
29539993832,3cyclictest41-21ksoftirqd/321:15:133
2953999381,3cyclictest121rcu_preempt20:07:173
2953899384,3cyclictest13390-21taskset19:41:472
29538993826,3cyclictest33-21ksoftirqd/220:35:292
29538993826,3cyclictest33-21ksoftirqd/220:35:292
29538993826,3cyclictest33-21ksoftirqd/219:55:272
29538993823,6cyclictest33-21ksoftirqd/200:15:142
29538993823,5cyclictest33-21ksoftirqd/223:15:252
29538993822,3cyclictest33-21ksoftirqd/200:20:272
2953899381,2cyclictest121rcu_preempt00:30:162
2953899380,7cyclictest207-21systemd-journal23:30:362
2953899380,4cyclictest20130-21kworker/2:219:10:132
29537993822,4cyclictest25-21ksoftirqd/119:20:231
29539993734,2cyclictest41-21ksoftirqd/322:55:233
29539993732,2cyclictest41-21ksoftirqd/322:15:003
29539993731,3cyclictest41-21ksoftirqd/320:20:003
29539993726,3cyclictest41-21ksoftirqd/321:50:283
29539993726,3cyclictest41-21ksoftirqd/321:50:273
29539993725,3cyclictest41-21ksoftirqd/300:35:213
29539993724,3cyclictest41-21ksoftirqd/320:25:193
2953899377,3cyclictest33-21ksoftirqd/221:50:152
2953899377,3cyclictest33-21ksoftirqd/221:50:152
29538993724,4cyclictest33-21ksoftirqd/219:30:252
29538993723,5cyclictest33-21ksoftirqd/221:25:162
29538993723,4cyclictest33-21ksoftirqd/220:57:042
29538993722,5cyclictest33-21ksoftirqd/200:00:242
29538993722,3cyclictest33-21ksoftirqd/222:35:012
29538993721,3cyclictest33-21ksoftirqd/222:15:002
2953899371,4cyclictest121rcu_preempt19:15:262
2953899371,2cyclictest10871-21ls00:05:242
2953899370,3cyclictest30264-21taskset20:17:322
29537993732,3cyclictest25-21ksoftirqd/121:55:271
29537993730,3cyclictest25-21ksoftirqd/120:15:251
2953799370,4cyclictest0-21swapper/123:50:151
139391370,0ptp4l401ktimersoftd/321:05:143
29539993630,3cyclictest41-21ksoftirqd/321:40:253
29539993630,3cyclictest41-21ksoftirqd/321:15:013
29539993613,10cyclictest41-21ksoftirqd/320:10:183
2953999361,2cyclictest121rcu_preempt21:25:153
29538993631,3cyclictest33-21ksoftirqd/223:50:252
29538993631,3cyclictest33-21ksoftirqd/220:35:002
29538993631,3cyclictest33-21ksoftirqd/219:45:152
29538993631,3cyclictest33-21ksoftirqd/219:35:142
29538993631,3cyclictest33-21ksoftirqd/200:15:012
29538993631,3cyclictest33-21ksoftirqd/200:15:002
29538993631,2cyclictest33-21ksoftirqd/219:25:012
29538993630,4cyclictest33-21ksoftirqd/221:59:012
29539993530,3cyclictest41-21ksoftirqd/322:40:143
29539993530,3cyclictest41-21ksoftirqd/320:45:043
29539993530,3cyclictest41-21ksoftirqd/319:15:203
29539993518,4cyclictest41-21ksoftirqd/321:35:133
29538993529,3cyclictest33-21ksoftirqd/223:00:162
29538993521,5cyclictest33-21ksoftirqd/222:29:462
29537993530,3cyclictest25-21ksoftirqd/121:30:011
29539993428,3cyclictest41-21ksoftirqd/300:20:123
29537993420,3cyclictest25-21ksoftirqd/121:07:311
2953799330,6cyclictest0-21swapper/123:55:181
29537993125,4cyclictest25-21ksoftirqd/100:16:321
2953799310,4cyclictest25-21ksoftirqd/100:23:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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