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2026-07-19 - 17:41
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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 rackdslot4.osadl.org (updated Sun Jul 19, 2026 12:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28162209175,22sleep00-21swapper/007:08:550
28392207171,24sleep30-21swapper/307:09:143
237022070,33sleep233-21ksoftirqd/207:05:262
27802203169,23sleep10-21swapper/107:08:281
158721770,5sleep0320099cyclictest11:25:160
2614921680,2sleep3320399cyclictest11:10:113
138491630,1ptp4l401ktimersoftd/309:38:353
3200996229,10cyclictest9-21ksoftirqd/009:45:010
3200996130,3cyclictest9-21ksoftirqd/007:50:000
138491610,0ptp4l401ktimersoftd/310:20:463
3200996029,7cyclictest9-21ksoftirqd/009:10:150
3200996029,6cyclictest9-21ksoftirqd/007:25:270
3200996028,6cyclictest9-21ksoftirqd/007:55:180
210002590,2sleep30-21swapper/311:00:013
3200995827,4cyclictest9-21ksoftirqd/011:00:110
3200995827,4cyclictest9-21ksoftirqd/011:00:110
3200995826,8cyclictest9-21ksoftirqd/007:35:270
3200995726,3cyclictest9-21ksoftirqd/010:30:000
3200995725,4cyclictest9-21ksoftirqd/010:05:120
3200995724,7cyclictest9-21ksoftirqd/007:50:190
3200995723,4cyclictest9-21ksoftirqd/010:15:130
196632570,2sleep20-21swapper/208:45:252
128282570,5sleep1320199cyclictest09:35:291
34102560,2sleep00-21swapper/012:35:000
320199564,7cyclictest5756-21latency_hist09:25:011
3200995629,4cyclictest9-21ksoftirqd/008:15:250
3200995628,3cyclictest9-21ksoftirqd/010:20:240
3200995625,6cyclictest9-21ksoftirqd/009:55:130
3200995624,4cyclictest9-21ksoftirqd/007:15:140
162462560,5sleep016116-21cstates11:55:130
320199555,6cyclictest14231-21uniq10:45:161
320199555,5cyclictest32215-21/usr/sbin/munin09:10:231
3200995527,5cyclictest9-21ksoftirqd/011:45:000
3200995526,4cyclictest9-21ksoftirqd/012:05:140
3200995524,4cyclictest9-21ksoftirqd/010:50:190
3200995524,4cyclictest9-21ksoftirqd/007:40:140
3200995518,5cyclictest9-21ksoftirqd/012:30:000
45012540,2sleep10-21swapper/111:30:201
320199544,6cyclictest10287-21tail11:40:261
3200995426,5cyclictest9-21ksoftirqd/007:10:220
3200995425,4cyclictest9-21ksoftirqd/008:55:170
3200995425,4cyclictest9-21ksoftirqd/008:25:260
38432530,3sleep00-21swapper/012:35:120
320199535,7cyclictest26675-21sed12:15:191
320199535,7cyclictest26675-21sed12:15:191
320199533,7cyclictest22962-21grep09:55:281
320199530,9cyclictest9077-21idleruntime09:30:161
320199530,18cyclictest25851-21date11:10:001
3200995326,3cyclictest9-21ksoftirqd/009:05:200
320199524,7cyclictest4170-21sed08:15:181
320199523,5cyclictest28987-21if_enp4s008:00:161
3200995239,3cyclictest9-21ksoftirqd/011:50:160
3200995226,4cyclictest9-21ksoftirqd/010:40:150
3200995223,4cyclictest9-21ksoftirqd/008:03:030
3200995222,3cyclictest9-21ksoftirqd/011:05:180
3200995222,3cyclictest9-21ksoftirqd/007:30:170
3200995221,3cyclictest9-21ksoftirqd/008:05:260
320199517,11cyclictest29263-21irqrtprio09:05:191
320199515,7cyclictest23637-21cstates08:55:151
320199513,6cyclictest19076-21cstates09:50:121
320199511,9cyclictest31796-21irqrtprio11:20:201
320199510,10cyclictest20237-21sshd12:00:321
320099516,3cyclictest9-21ksoftirqd/012:20:000
320099516,3cyclictest9-21ksoftirqd/012:20:000
3200995123,4cyclictest9-21ksoftirqd/009:50:250
3200995118,4cyclictest9-21ksoftirqd/009:30:140
320199505,7cyclictest19363-21tr08:45:221
320199503,7cyclictest10966-21cpuspeed_turbos08:30:131
320199501,5cyclictest0-21swapper/112:10:121
3200995031,11cyclictest9-21ksoftirqd/011:10:250
320199492,7cyclictest30776-21/usr/sbin/munin08:05:201
320199492,6cyclictest0-21swapper/111:50:261
320199491,6cyclictest0-21swapper/107:35:241
320199490,11cyclictest27547-21mailstats11:10:221
3200994934,4cyclictest9-21ksoftirqd/008:50:000
3200994929,2cyclictest9-21ksoftirqd/010:35:120
320199484,7cyclictest21717-21sed08:50:171
320199484,6cyclictest8206-21gpgv07:20:001
320199483,7cyclictest29512-21sed10:10:181
320199483,6cyclictest241ktimersoftd/110:35:241
320199482,6cyclictest241ktimersoftd/110:55:001
320199482,10cyclictest1554-21/usr/sbin/munin11:25:171
320199481,5cyclictest0-21swapper/107:55:141
320199480,9cyclictest16779-21irqrtprio11:55:181
320199480,10cyclictest5335-21grep10:25:251
3200994831,5cyclictest9-21ksoftirqd/011:45:130
3200994820,9cyclictest9-21ksoftirqd/010:45:140
3200994818,3cyclictest9-21ksoftirqd/008:30:200
320199474,7cyclictest12252-21cut10:40:191
320199474,6cyclictest9098-21irqrtprio08:25:201
320199474,6cyclictest29849-21switchtime12:20:251
320199474,5cyclictest13609-21bc09:40:091
320199473,7cyclictest23359-21latency_hist11:05:011
320199473,7cyclictest23359-21latency_hist11:05:011
320199473,7cyclictest13167-21latency_hist07:29:591
320199473,6cyclictest3984-21irqrtprio07:10:191
320199472,6cyclictest241ktimersoftd/111:35:131
320199470,18cyclictest19823-21wc07:40:271
3200994716,9cyclictest9-21ksoftirqd/012:00:270
3200994715,4cyclictest9-21ksoftirqd/010:30:190
320099470,5cyclictest9-21ksoftirqd/010:00:230
320399461,43cyclictest15813-21cron09:45:013
320199465,5cyclictest7506-21mailstats09:25:251
320199465,5cyclictest7506-21mailstats09:25:251
320199462,6cyclictest24312-21if_enp1s010:00:171
320199461,5cyclictest0-21swapper/111:15:131
320199460,5cyclictest0-21swapper/112:25:141
320199460,5cyclictest0-21swapper/107:30:141
320199460,10cyclictest17513-21sed08:40:281
320199456,6cyclictest5946-21ls12:40:011
320199455,7cyclictest21002-21cpuspeed_turbos12:05:121
320199452,10cyclictest6581-21/usr/sbin/munin08:20:171
320199450,5cyclictest0-21swapper/110:15:111
320099455,7cyclictest9-21ksoftirqd/008:35:150
320099454,3cyclictest9-21ksoftirqd/010:10:130
320099453,3cyclictest121rcu_preempt09:35:020
3200994527,9cyclictest9-21ksoftirqd/009:20:260
320099451,7cyclictest9-21ksoftirqd/009:15:170
3200994515,8cyclictest9-21ksoftirqd/009:25:190
3200994515,8cyclictest9-21ksoftirqd/009:25:190
320099451,3cyclictest9-21ksoftirqd/011:35:140
3202994437,4cyclictest30503-21turbostat.cron09:10:012
3202994432,10cyclictest33-21ksoftirqd/211:20:242
320199445,7cyclictest19315-21/usr/sbin/munin10:55:181
320199440,7cyclictest241ktimersoftd/110:30:261
320099443,2cyclictest9-21ksoftirqd/009:50:000
3200994431,4cyclictest9-21ksoftirqd/007:25:000
3200994426,10cyclictest9-21ksoftirqd/008:20:270
320099441,3cyclictest9-21ksoftirqd/008:40:200
320099440,3cyclictest9-21ksoftirqd/008:10:190
138491440,0ptp4l401ktimersoftd/312:10:183
320299431,39cyclictest13339-21cron09:40:012
3201994337,3cyclictest18266-21cron09:50:001
320199431,6cyclictest241ktimersoftd/107:20:261
320199431,39cyclictest3290-21turbostat12:35:001
3200994328,6cyclictest9-21ksoftirqd/012:10:140
320099430,5cyclictest9-21ksoftirqd/012:20:120
138491430,0ptp4l401ktimersoftd/309:10:183
3202994237,3cyclictest33-21ksoftirqd/207:20:002
320099424,7cyclictest9-21ksoftirqd/011:35:000
3200994230,4cyclictest9-21ksoftirqd/011:00:000
3200994230,4cyclictest9-21ksoftirqd/009:00:270
3200994229,6cyclictest9-21ksoftirqd/008:50:110
320099421,8cyclictest9-21ksoftirqd/011:20:220
3200994214,3cyclictest9-21ksoftirqd/011:15:160
138491420,0ptp4l401ktimersoftd/310:40:133
3202994136,3cyclictest33-21ksoftirqd/209:35:012
3202994135,3cyclictest33-21ksoftirqd/210:20:012
3202994111,4cyclictest33-21ksoftirqd/208:05:292
3201994135,4cyclictest25-21ksoftirqd/108:40:001
320199411,5cyclictest27054-21cut10:05:171
3201994110,4cyclictest25-21ksoftirqd/107:45:301
320299409,7cyclictest33-21ksoftirqd/211:30:002
3202994035,3cyclictest33-21ksoftirqd/209:49:592
3202994035,3cyclictest33-21ksoftirqd/207:40:012
320199405,6cyclictest13421-21sed11:50:011
320199405,5cyclictest2723-21grep10:20:251
138491400,1ptp4l401ktimersoftd/309:28:233
138491400,1ptp4l401ktimersoftd/309:28:233
3202993935,3cyclictest33-21ksoftirqd/211:00:002
3202993934,3cyclictest33-21ksoftirqd/208:35:012
3202993933,3cyclictest33-21ksoftirqd/209:24:592
320199391,5cyclictest241ktimersoftd/109:00:171
138491390,0ptp4l401ktimersoftd/308:39:573
3202993833,3cyclictest33-21ksoftirqd/209:00:012
3202993832,3cyclictest33-21ksoftirqd/209:15:002
3202993831,5cyclictest33-21ksoftirqd/207:50:002
3202993827,9cyclictest33-21ksoftirqd/208:25:262
3202993825,11cyclictest33-21ksoftirqd/211:35:182
3202993824,5cyclictest33-21ksoftirqd/212:40:012
320299380,2cyclictest121rcu_preempt12:00:142
320199382,6cyclictest2271-21grep09:15:251
138491380,1ptp4l401ktimersoftd/308:01:543
3203993731,4cyclictest41-21ksoftirqd/307:27:263
3203993730,5cyclictest41-21ksoftirqd/307:45:483
320299376,3cyclictest33-21ksoftirqd/212:30:192
3202993733,3cyclictest33-21ksoftirqd/211:05:192
3202993733,3cyclictest33-21ksoftirqd/209:59:592
3202993733,2cyclictest33-21ksoftirqd/210:25:002
3202993732,3cyclictest33-21ksoftirqd/212:15:192
3202993732,3cyclictest33-21ksoftirqd/212:15:192
3202993732,3cyclictest33-21ksoftirqd/212:10:002
3202993732,3cyclictest33-21ksoftirqd/211:50:002
3202993732,3cyclictest33-21ksoftirqd/208:45:002
3202993732,3cyclictest33-21ksoftirqd/207:50:012
3202993732,3cyclictest33-21ksoftirqd/207:44:262
3202993731,4cyclictest33-21ksoftirqd/211:56:392
3202993731,4cyclictest33-21ksoftirqd/209:20:002
3202993727,8cyclictest33-21ksoftirqd/211:40:242
320299371,2cyclictest121rcu_preempt12:20:222
3202993710,7cyclictest33-21ksoftirqd/207:10:272
3202993710,6cyclictest33-21ksoftirqd/208:00:272
138491370,1ptp4l401ktimersoftd/308:07:203
3203993630,4cyclictest41-21ksoftirqd/312:32:513
320299365,4cyclictest33-21ksoftirqd/210:10:142
3202993632,3cyclictest33-21ksoftirqd/212:15:012
3202993632,2cyclictest33-21ksoftirqd/207:20:212
3202993631,3cyclictest33-21ksoftirqd/212:25:202
3202993631,3cyclictest33-21ksoftirqd/210:30:272
3202993631,3cyclictest33-21ksoftirqd/207:25:272
3202993631,2cyclictest33-21ksoftirqd/208:35:132
3202993630,4cyclictest33-21ksoftirqd/210:49:492
3202993630,4cyclictest33-21ksoftirqd/210:07:082
320299360,2cyclictest121rcu_preempt10:50:242
3203993529,4cyclictest41-21ksoftirqd/311:42:133
3203993529,4cyclictest41-21ksoftirqd/309:48:243
3203993528,4cyclictest41-21ksoftirqd/310:00:233
320299356,3cyclictest33-21ksoftirqd/209:50:222
320299353,6cyclictest33-21ksoftirqd/211:00:212
320299353,6cyclictest33-21ksoftirqd/211:00:212
3202993531,2cyclictest33-21ksoftirqd/210:40:282
3202993531,2cyclictest33-21ksoftirqd/208:14:592
3202993530,3cyclictest33-21ksoftirqd/211:10:182
3202993530,3cyclictest33-21ksoftirqd/210:25:272
3202993530,3cyclictest33-21ksoftirqd/210:05:002
3202993529,4cyclictest33-21ksoftirqd/211:54:152
3202993529,4cyclictest33-21ksoftirqd/209:45:012
3202993529,4cyclictest33-21ksoftirqd/207:30:312
320299351,5cyclictest33-21ksoftirqd/208:20:142
320299350,2cyclictest121rcu_preempt09:00:132
3201993529,4cyclictest25-21ksoftirqd/107:54:211
3203993428,4cyclictest41-21ksoftirqd/312:39:093
3203993428,4cyclictest41-21ksoftirqd/311:18:583
3203993428,4cyclictest41-21ksoftirqd/310:53:503
3203993428,4cyclictest41-21ksoftirqd/309:59:073
3203993428,4cyclictest41-21ksoftirqd/307:55:553
3203993427,5cyclictest41-21ksoftirqd/310:16:233
320299346,7cyclictest33-21ksoftirqd/209:25:002
320299346,7cyclictest33-21ksoftirqd/209:25:002
320299345,3cyclictest33-21ksoftirqd/208:15:172
3202993429,3cyclictest33-21ksoftirqd/211:15:012
3202993429,3cyclictest33-21ksoftirqd/210:35:272
3202993429,3cyclictest33-21ksoftirqd/208:00:002
3202993428,3cyclictest33-21ksoftirqd/208:50:112
138491340,0ptp4l401ktimersoftd/311:38:523
3203993328,3cyclictest41-21ksoftirqd/309:32:593
3203993328,3cyclictest41-21ksoftirqd/307:13:073
3203993327,4cyclictest41-21ksoftirqd/312:08:083
3203993327,4cyclictest41-21ksoftirqd/312:04:393
3203993327,4cyclictest41-21ksoftirqd/311:31:543
3203993327,4cyclictest41-21ksoftirqd/310:11:103
3202993329,3cyclictest33-21ksoftirqd/211:30:252
3201993327,3cyclictest25-21ksoftirqd/108:14:081
138491330,0ptp4l401ktimersoftd/312:25:223
138491330,0ptp4l401ktimersoftd/307:32:363
3203993227,3cyclictest41-21ksoftirqd/308:12:133
3203993227,3cyclictest41-21ksoftirqd/307:20:123
3203993226,4cyclictest41-21ksoftirqd/311:07:383
3203993226,4cyclictest41-21ksoftirqd/309:06:273
3203993226,4cyclictest41-21ksoftirqd/308:58:533
3203993226,3cyclictest41-21ksoftirqd/307:54:323
138491320,0ptp4l401ktimersoftd/311:45:193
3203993127,3cyclictest41-21ksoftirqd/308:48:413
3203993126,3cyclictest41-21ksoftirqd/309:50:103
3203993126,3cyclictest41-21ksoftirqd/308:20:513
3203993125,4cyclictest41-21ksoftirqd/312:24:013
3203993125,4cyclictest41-21ksoftirqd/309:21:203
3203993125,4cyclictest41-21ksoftirqd/308:51:113
3203993125,4cyclictest41-21ksoftirqd/308:41:403
3203993125,4cyclictest41-21ksoftirqd/307:18:283
3203993110,20cyclictest5453-21kworker/3:010:34:543
134991310,1getstats0-21swapper/310:49:513
3203993025,3cyclictest41-21ksoftirqd/311:52:283
3203993024,4cyclictest41-21ksoftirqd/311:24:003
3203993016,12cyclictest41-21ksoftirqd/310:10:003
138491300,8ptp4l401ktimersoftd/310:26:463
3203992924,3cyclictest41-21ksoftirqd/310:37:343
3203992924,3cyclictest41-21ksoftirqd/308:29:063
3203992924,3cyclictest41-21ksoftirqd/307:39:293
3203992923,4cyclictest41-21ksoftirqd/311:04:183
3203992923,4cyclictest41-21ksoftirqd/311:04:173
3203992923,4cyclictest41-21ksoftirqd/308:16:013
138491290,0ptp4l401ktimersoftd/311:25:253
3203992823,3cyclictest41-21ksoftirqd/312:18:573
3203992823,3cyclictest41-21ksoftirqd/312:18:563
3203992823,3cyclictest41-21ksoftirqd/309:15:463
3203992722,3cyclictest41-21ksoftirqd/311:59:113
138491260,1ptp4l401ktimersoftd/308:30:123
3203992520,3cyclictest41-21ksoftirqd/309:00:053
138491240,0ptp4l401ktimersoftd/307:43:353
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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