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2026-07-30 - 18:26
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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 Jul 30, 2026 12:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
169682210177,22sleep10-21swapper/107:06:001
138591206172,23phc2sys0-21swapper/307:07:413
170042203170,22sleep20-21swapper/207:06:292
172032201167,22sleep00-21swapper/007:09:050
2818921560,5sleep11757699cyclictest09:35:201
17577998635,8cyclictest33-21ksoftirqd/209:23:512
1757699829,11cyclictest654-21polkitd08:52:091
1757699829,11cyclictest654-21polkitd08:52:091
17577997531,5cyclictest33-21ksoftirqd/209:30:512
17577997224,9cyclictest33-21ksoftirqd/211:50:252
17577997127,4cyclictest33-21ksoftirqd/211:40:152
17577997031,16cyclictest33-21ksoftirqd/210:25:172
17577996932,5cyclictest33-21ksoftirqd/208:55:002
17577996932,5cyclictest33-21ksoftirqd/208:55:002
17577996828,9cyclictest33-21ksoftirqd/207:50:172
17577996732,6cyclictest33-21ksoftirqd/209:36:122
17577996623,8cyclictest33-21ksoftirqd/207:25:132
17577996529,10cyclictest33-21ksoftirqd/211:25:122
17577996528,9cyclictest33-21ksoftirqd/210:45:002
17577996528,9cyclictest33-21ksoftirqd/210:45:002
17577996522,4cyclictest33-21ksoftirqd/210:20:162
17577996520,4cyclictest33-21ksoftirqd/207:55:142
17577996419,9cyclictest33-21ksoftirqd/211:00:132
138491640,1ptp4l401ktimersoftd/309:07:143
17577996327,9cyclictest33-21ksoftirqd/212:25:152
17577996327,5cyclictest33-21ksoftirqd/211:25:002
17577996324,5cyclictest33-21ksoftirqd/207:20:012
17577996226,9cyclictest33-21ksoftirqd/211:15:262
17577996225,9cyclictest33-21ksoftirqd/212:05:152
17577996223,8cyclictest33-21ksoftirqd/209:45:162
17577996223,8cyclictest33-21ksoftirqd/208:30:202
17577996126,5cyclictest33-21ksoftirqd/210:55:232
1757699611,25cyclictest7664-21smartctl10:00:141
17576996110,10cyclictest7472-21chrt11:05:181
17575996129,10cyclictest9-21ksoftirqd/012:05:200
17577996028,9cyclictest33-21ksoftirqd/207:10:222
17577996027,8cyclictest33-21ksoftirqd/212:30:142
17577996019,4cyclictest33-21ksoftirqd/208:40:142
17576996011,8cyclictest21769-21sshd09:23:501
17575996022,10cyclictest9-21ksoftirqd/007:20:120
159912600,2sleep10-21swapper/112:25:211
17577995925,9cyclictest33-21ksoftirqd/212:00:222
1757699598,15cyclictest21218-21unixbench_multi10:25:251
17577995832,3cyclictest33-21ksoftirqd/210:05:132
17577995825,8cyclictest33-21ksoftirqd/212:15:222
17577995825,8cyclictest33-21ksoftirqd/211:10:242
17577995824,5cyclictest33-21ksoftirqd/208:00:132
17577995817,8cyclictest33-21ksoftirqd/212:35:192
1757599581,6cyclictest9-21ksoftirqd/007:40:000
149982580,3sleep114993-21fschecks_time09:10:171
17577995724,8cyclictest33-21ksoftirqd/208:25:222
17577995723,8cyclictest33-21ksoftirqd/211:35:242
17577995722,9cyclictest33-21ksoftirqd/208:35:122
17577995721,6cyclictest33-21ksoftirqd/212:20:242
17577995718,7cyclictest33-21ksoftirqd/210:30:232
1757699578,11cyclictest19195-21apt-key11:30:001
17575995726,9cyclictest9-21ksoftirqd/011:55:130
17575995725,4cyclictest9-21ksoftirqd/008:52:090
17575995725,4cyclictest9-21ksoftirqd/008:52:090
82562560,2sleep00-21swapper/011:05:250
17577995624,9cyclictest33-21ksoftirqd/210:50:152
17577995621,3cyclictest33-21ksoftirqd/210:05:002
1757699569,10cyclictest25556-21fschecks_count07:25:141
1757699568,10cyclictest11025-21grep11:10:261
17575995625,10cyclictest9-21ksoftirqd/010:10:010
17575995621,7cyclictest9-21ksoftirqd/007:25:230
17577995521,5cyclictest33-21ksoftirqd/207:40:242
17577995520,7cyclictest33-21ksoftirqd/209:53:042
17577995517,6cyclictest33-21ksoftirqd/209:10:242
17577995517,5cyclictest33-21ksoftirqd/210:10:242
17577995517,5cyclictest33-21ksoftirqd/209:00:122
1757699559,11cyclictest12154-21systemd-cgroups08:02:341
1757699558,11cyclictest22400-21/usr/sbin/munin11:35:121
1757699556,12cyclictest7645-21grep12:10:181
17576995510,11cyclictest18986-21ps07:10:231
17577995433,3cyclictest33-21ksoftirqd/211:10:012
17577995418,7cyclictest33-21ksoftirqd/207:20:262
17577995417,6cyclictest33-21ksoftirqd/209:55:152
17577995417,5cyclictest33-21ksoftirqd/210:35:202
17577995417,5cyclictest33-21ksoftirqd/209:40:152
17577995416,6cyclictest33-21ksoftirqd/208:55:232
1757699546,10cyclictest29536-21expr10:45:121
1757599545,9cyclictest9-21ksoftirqd/010:25:140
17575995428,9cyclictest9-21ksoftirqd/007:55:010
17577995319,4cyclictest33-21ksoftirqd/211:55:432
1757699537,11cyclictest5462-21/usr/sbin/munin07:50:131
1757699537,10cyclictest574-21/usr/sbin/munin11:55:211
1757699536,11cyclictest30684-21awk11:50:231
1757699536,11cyclictest3021-21sed10:55:181
1757699536,10cyclictest22587-21sed09:25:141
17575995328,10cyclictest9-21ksoftirqd/009:05:120
17575995326,9cyclictest9-21ksoftirqd/007:10:110
17575995320,4cyclictest9-21ksoftirqd/008:30:000
17575995320,4cyclictest9-21ksoftirqd/008:10:000
17575995316,8cyclictest9-21ksoftirqd/010:00:140
1757799526,6cyclictest33-21ksoftirqd/212:10:192
17577995222,5cyclictest33-21ksoftirqd/210:45:122
17577995219,3cyclictest33-21ksoftirqd/210:15:212
17577995218,5cyclictest33-21ksoftirqd/211:45:092
17577995215,5cyclictest33-21ksoftirqd/208:20:142
1757699527,12cyclictest31175-21awk08:40:221
1757699527,11cyclictest701-21cat09:45:221
1757699527,11cyclictest11935-21cat09:05:011
1757699527,10cyclictest32707-21expr08:45:151
1757699527,10cyclictest32707-21expr08:45:151
1757699526,11cyclictest5237-21cut12:05:191
1757699526,11cyclictest17550-21if_enp1s009:15:161
1757699526,11cyclictest15906-21date11:20:241
1757599522,10cyclictest22383-21sendmail-msp07:20:000
1757799516,2cyclictest33-21ksoftirqd/207:45:192
17577995118,4cyclictest33-21ksoftirqd/208:10:182
1757699517,18cyclictest26395-21tail09:30:281
1757699516,11cyclictest18119-21cat10:20:201
1757599514,9cyclictest9-21ksoftirqd/011:25:180
1757599514,8cyclictest9-21ksoftirqd/008:55:220
17575995125,4cyclictest9-21ksoftirqd/009:00:170
1757699508,11cyclictest31799-21/usr/sbin/munin07:35:271
1757699506,12cyclictest27764-21sed11:45:151
1757699506,10cyclictest19942-21cut08:20:001
1757699504,11cyclictest27715-21cstates07:30:131
1757599505,7cyclictest9-21ksoftirqd/011:50:250
1757599505,10cyclictest9-21ksoftirqd/012:25:010
1757599504,8cyclictest9-21ksoftirqd/009:40:270
1757599504,3cyclictest121rcu_preempt09:35:190
1757599502,8cyclictest9-21ksoftirqd/008:40:190
1757599500,11cyclictest9-21ksoftirqd/009:30:000
17577994919,10cyclictest33-21ksoftirqd/209:05:132
1757699497,19cyclictest25934-21/usr/sbin/munin11:40:251
1757699497,18cyclictest16341-21/usr/sbin/munin08:10:221
1757699496,12cyclictest25123-21cut10:35:191
1757699496,11cyclictest23245-21processes10:30:231
1757599495,8cyclictest9-21ksoftirqd/009:30:150
1757599494,7cyclictest9-21ksoftirqd/008:45:210
1757599494,7cyclictest9-21ksoftirqd/008:45:200
1757599493,7cyclictest9-21ksoftirqd/008:20:140
1757599492,8cyclictest9-21ksoftirqd/011:35:150
17575994921,9cyclictest9-21ksoftirqd/011:15:180
1757599491,9cyclictest9-21ksoftirqd/010:40:120
1757599491,9cyclictest9-21ksoftirqd/010:40:120
1757599491,5cyclictest9-21ksoftirqd/011:40:230
1757599490,6cyclictest9-21ksoftirqd/007:50:000
17577994833,5cyclictest33-21ksoftirqd/208:09:592
17577994830,4cyclictest33-21ksoftirqd/209:25:182
17577994823,7cyclictest33-21ksoftirqd/208:45:362
17577994823,7cyclictest33-21ksoftirqd/208:45:362
17577994818,7cyclictest33-21ksoftirqd/207:30:152
1757699487,9cyclictest21765-21ls12:40:001
1757699487,18cyclictest28643-21/usr/sbin/munin08:35:211
1757699486,11cyclictest15448-21irqstats10:15:181
1757699485,11cyclictest13583-21cat12:20:261
1757599485,9cyclictest9-21ksoftirqd/010:35:000
1757599485,9cyclictest9-21ksoftirqd/009:15:130
1757599484,7cyclictest9-21ksoftirqd/011:45:240
1757599483,8cyclictest9-21ksoftirqd/010:10:130
1757599483,6cyclictest9-21ksoftirqd/010:15:120
1757599482,9cyclictest9-21ksoftirqd/009:10:190
17575994820,9cyclictest9-21ksoftirqd/012:04:590
1757599480,11cyclictest9-21ksoftirqd/012:15:180
1757899471,5cyclictest0-21swapper/308:52:253
1757899471,5cyclictest0-21swapper/308:52:243
17577994725,10cyclictest33-21ksoftirqd/207:35:152
1757799472,4cyclictest33-21ksoftirqd/208:20:002
1757699477,11cyclictest7749-21cstates07:55:131
1757699476,7cyclictest3488-21ps09:50:231
1757699476,11cyclictest6741-21apt-config08:55:011
1757599475,8cyclictest9-21ksoftirqd/011:00:230
1757599475,4cyclictest9-21ksoftirqd/007:45:000
1757599474,9cyclictest9-21ksoftirqd/011:20:180
1757599474,7cyclictest9-21ksoftirqd/008:30:200
1757599472,7cyclictest9-21ksoftirqd/007:35:000
1757599471,5cyclictest9-21ksoftirqd/009:20:170
17578994622,16cyclictest41-21ksoftirqd/310:05:003
17577994624,4cyclictest33-21ksoftirqd/209:15:142
17577994623,8cyclictest33-21ksoftirqd/211:30:172
1757699467,9cyclictest11369-21uptime10:05:261
1757599465,9cyclictest9-21ksoftirqd/012:35:120
1757599465,9cyclictest9-21ksoftirqd/011:30:130
1757599464,9cyclictest9-21ksoftirqd/010:45:120
1757599463,7cyclictest9-21ksoftirqd/009:45:150
1757599463,3cyclictest9-21ksoftirqd/011:10:140
1757599461,6cyclictest9-21ksoftirqd/010:55:100
138491460,0ptp4l401ktimersoftd/307:10:263
17578994532,11cyclictest41-21ksoftirqd/309:20:013
1757699458,11cyclictest21871-21head08:20:261
1757699458,11cyclictest21337-21grep11:30:271
1757699457,11cyclictest23280-21cut08:25:161
1757699456,10cyclictest13551-21sed09:05:251
1757599455,9cyclictest9-21ksoftirqd/009:55:140
1757599455,9cyclictest9-21ksoftirqd/009:55:000
1757599454,9cyclictest9-21ksoftirqd/008:10:260
1757599453,9cyclictest9-21ksoftirqd/010:50:150
1757599453,8cyclictest9-21ksoftirqd/010:35:130
1757599453,5cyclictest9-21ksoftirqd/010:20:270
1757599453,10cyclictest9-21ksoftirqd/012:25:180
1757599452,5cyclictest9-21ksoftirqd/008:00:250
1757699446,7cyclictest32436-21apt-get07:40:111
1757699445,11cyclictest14214-21latency_hist10:15:001
1757599445,4cyclictest9-21ksoftirqd/008:15:230
1757599443,8cyclictest9-21ksoftirqd/012:10:200
1757599441,8cyclictest9-21ksoftirqd/007:50:110
1757899439,16cyclictest41-21ksoftirqd/311:45:003
17578994325,15cyclictest41-21ksoftirqd/308:25:003
1757699437,11cyclictest14023-21latency_hist11:20:011
1757699437,10cyclictest4450-21cpuspeed_turbos11:00:121
1757599431,7cyclictest9-21ksoftirqd/012:30:120
138491430,0ptp4l401ktimersoftd/310:25:143
17578994232,3cyclictest19800-21dump-pmu-power08:20:003
17578994218,3cyclictest41-21ksoftirqd/310:10:133
1757699426,12cyclictest9986-21cat12:15:151
1757699426,10cyclictest3626-21sed12:00:281
1757699425,7cyclictest20691-21perl07:15:151
1757699425,10cyclictest4611-21dpkg09:55:121
17578994136,3cyclictest41-21ksoftirqd/312:00:003
17578994136,3cyclictest41-21ksoftirqd/311:15:013
17578994136,3cyclictest41-21ksoftirqd/307:30:003
1757699419,11cyclictest27681-21sed10:40:171
1757699419,11cyclictest27681-21sed10:40:171
1757599411,6cyclictest9-21ksoftirqd/008:40:000
1757899409,4cyclictest41-21ksoftirqd/308:55:193
17578994035,3cyclictest41-21ksoftirqd/309:30:003
17578994035,3cyclictest41-21ksoftirqd/309:15:003
1757899403,4cyclictest121rcu_preempt07:40:013
17578994034,3cyclictest41-21ksoftirqd/311:25:123
17578994034,3cyclictest41-21ksoftirqd/307:55:003
1757899402,2cyclictest121rcu_preempt08:35:013
17578994010,3cyclictest41-21ksoftirqd/308:10:143
1757699406,10cyclictest12591-21/usr/sbin/munin08:05:161
17578993934,3cyclictest41-21ksoftirqd/311:50:003
17578993934,3cyclictest41-21ksoftirqd/309:20:143
17578993927,9cyclictest41-21ksoftirqd/312:05:273
17578993917,3cyclictest41-21ksoftirqd/312:20:233
1757899389,4cyclictest41-21ksoftirqd/309:00:243
17578993834,2cyclictest41-21ksoftirqd/308:05:003
1757699381,11cyclictest496-21cut10:50:241
1757899374,3cyclictest41-21ksoftirqd/307:45:003
17578993734,2cyclictest41-21ksoftirqd/307:20:003
17578993732,3cyclictest41-21ksoftirqd/312:15:123
17578993731,3cyclictest41-21ksoftirqd/308:40:003
1757899371,4cyclictest0-21swapper/310:20:153
1757699376,11cyclictest3357-21cut07:45:181
138491370,0ptp4l401ktimersoftd/307:45:263
1757899367,3cyclictest41-21ksoftirqd/309:55:153
17578993631,3cyclictest41-21ksoftirqd/310:15:173
17578993631,3cyclictest41-21ksoftirqd/310:05:183
17578993631,3cyclictest41-21ksoftirqd/309:55:003
17578993631,3cyclictest41-21ksoftirqd/307:30:263
17578993630,3cyclictest41-21ksoftirqd/310:35:003
17578993630,3cyclictest41-21ksoftirqd/307:55:183
1757899361,4cyclictest41-21ksoftirqd/310:35:163
1757699362,10cyclictest0-21swapper/108:30:171
17578993532,2cyclictest41-21ksoftirqd/311:00:173
17578993530,3cyclictest41-21ksoftirqd/312:10:133
17578993530,3cyclictest41-21ksoftirqd/311:55:013
17578993529,4cyclictest41-21ksoftirqd/310:54:453
17578993529,4cyclictest41-21ksoftirqd/309:48:373
17578993529,4cyclictest41-21ksoftirqd/308:43:543
17578993529,4cyclictest41-21ksoftirqd/308:26:413
17578993529,4cyclictest41-21ksoftirqd/307:22:033
17578993529,3cyclictest41-21ksoftirqd/311:20:233
17578993521,3cyclictest41-21ksoftirqd/312:35:143
138491350,1ptp4l391rcuc/310:40:173
138491350,1ptp4l391rcuc/310:40:163
138491350,0ptp4l401ktimersoftd/312:30:143
1757899345,4cyclictest41-21ksoftirqd/312:25:113
17578993430,3cyclictest41-21ksoftirqd/311:15:183
17578993429,3cyclictest41-21ksoftirqd/311:05:203
17578993429,3cyclictest41-21ksoftirqd/309:35:253
17578993428,4cyclictest41-21ksoftirqd/311:35:293
17578993428,3cyclictest41-21ksoftirqd/309:45:013
17578993427,4cyclictest41-21ksoftirqd/311:00:013
1757899341,2cyclictest121rcu_preempt09:35:003
1757699342,9cyclictest0-21swapper/112:30:231
138491340,0ptp4l401ktimersoftd/312:00:503
17578993328,3cyclictest41-21ksoftirqd/308:50:003
17578993328,3cyclictest41-21ksoftirqd/308:50:003
17578993320,3cyclictest41-21ksoftirqd/308:05:143
17576993327,4cyclictest25-21ksoftirqd/109:41:291
17578993218,4cyclictest41-21ksoftirqd/310:45:123
1757899312,3cyclictest41-21ksoftirqd/311:30:223
1757699316,16cyclictest0-21swapper/107:24:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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