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2026-06-23 - 20:58
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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 rackdslot1.osadl.org (updated Tue Jun 23, 2026 12:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2929721460,5sleep22520999cyclictest11:55:172
2520899810,69cyclictest31439-21sed12:00:181
3522670,5sleep2344-21awk10:55:002
2520899671,22cyclictest31995-21sed07:25:001
2520899668,18cyclictest2182-21date08:40:001
2520899660,24cyclictest26134-21ls10:40:111
134491660,2ptp4l0-21swapper/207:05:232
2520899650,25cyclictest12473-21missed_timers07:50:211
2520899650,23cyclictest5500-21cstates11:05:121
2520899630,60cyclictest19322-21memory09:15:211
2520899621,29cyclictest2512-21chrt12:07:521
2520899620,24cyclictest10163-21df_abs11:15:131
2520899611,56cyclictest17341-21/usr/sbin/munin11:30:161
2520899610,58cyclictest20940-21df08:10:141
2520899610,58cyclictest20940-21df08:10:141
2520899590,55cyclictest21107-21tune2fs09:20:151
2520899581,53cyclictest12409-21iostat_ios10:10:191
2520899580,31cyclictest5280-21date11:05:001
2520899580,23cyclictest4470-21cat07:35:121
2520899580,20cyclictest4328-21latency_hist08:45:001
134491580,3ptp4l0-21swapper/110:50:221
2520899572,18cyclictest0-21swapper/111:50:001
2520899570,28cyclictest20307-21chrt08:07:541
134491570,4ptp4l0-21swapper/007:38:100
134491570,3ptp4l0-21swapper/208:15:372
134491570,3ptp4l0-21swapper/207:55:132
2520899562,19cyclictest0-21swapper/111:53:521
2520899562,15cyclictest0-21swapper/107:15:161
2520899560,53cyclictest2678-21df_abs09:50:141
2520899560,24cyclictest3878-21latency12:10:181
2520899560,24cyclictest3878-21latency12:10:181
2520899550,26cyclictest29713-21seq08:29:351
134491550,4ptp4l2415-21apt-get09:50:122
134491550,3ptp4l0-21swapper/208:45:122
134491550,3ptp4l0-21swapper/009:17:350
2520899542,22cyclictest0-21swapper/112:19:411
2520899542,21cyclictest0-21swapper/109:56:021
2520899541,31cyclictest29799-21ssh11:55:241
2520899541,20cyclictest14205-21hddtemp_smartct09:05:131
2520899540,27cyclictest18110-21seq09:14:561
2520899540,25cyclictest11419-21chrt10:07:571
2520899540,24cyclictest30144-21taskset09:40:031
25207995426,4cyclictest9-21ksoftirqd/007:50:000
25207995423,3cyclictest9-21ksoftirqd/007:33:150
25207995417,8cyclictest9-21ksoftirqd/010:30:280
134491540,9ptp4l0-21swapper/310:52:293
134491540,4ptp4l22368-21meminfo11:40:192
134491540,4ptp4l0-21swapper/008:06:540
2520899532,21cyclictest0-21swapper/112:39:591
2520899531,21cyclictest16120-21/usr/sbin/munin08:00:221
2520899531,19cyclictest4993-21perl08:45:161
2520899530,25cyclictest15730-21seq07:58:261
25207995322,3cyclictest9-21ksoftirqd/011:27:030
25207995317,5cyclictest9-21ksoftirqd/009:35:000
134491530,4ptp4l0-21swapper/207:35:292
134491530,4ptp4l0-21swapper/011:00:360
134491530,4ptp4l0-21swapper/008:00:030
134491530,4ptp4l0-21swapper/007:24:270
134491530,3ptp4l0-21swapper/209:13:302
134491530,3ptp4l0-21swapper/012:10:280
134491530,3ptp4l0-21swapper/012:10:280
2520899521,18cyclictest1750-21ntp_states10:55:231
2520899520,27cyclictest9588-21seq11:14:191
2520899520,25cyclictest24864-21seq08:16:431
2520899520,23cyclictest13362-21runrttasks09:03:011
25207995221,3cyclictest9-21ksoftirqd/007:40:180
25207995218,8cyclictest9-21ksoftirqd/010:13:060
134491520,4ptp4l0-21swapper/011:05:560
2520899511,24cyclictest27262-21seq07:14:451
2520899510,18cyclictest22678-21ps11:40:231
25207995117,8cyclictest9-21ksoftirqd/012:15:260
25207995116,6cyclictest9-21ksoftirqd/008:30:130
134491510,3ptp4l0-21swapper/008:38:160
134491510,11ptp4l1301-21snmpd09:27:183
2520899501,26cyclictest27830-21taskset09:35:051
2520899500,25cyclictest11802-21seq12:28:481
2520799509,7cyclictest9-21ksoftirqd/011:45:000
25207995021,3cyclictest9-21ksoftirqd/011:55:110
25207995020,4cyclictest9-21ksoftirqd/009:05:020
25207995019,3cyclictest9-21ksoftirqd/011:50:060
25207995018,4cyclictest9-21ksoftirqd/009:55:180
134491500,4ptp4l0-21swapper/208:44:052
134491500,4ptp4l0-21swapper/010:39:540
134491500,4ptp4l0-21swapper/009:13:420
134491500,4ptp4l0-21swapper/008:23:190
134491500,3ptp4l0-21swapper/010:29:180
134491500,3ptp4l0-21swapper/010:02:450
2520899492,45cyclictest0-21swapper/108:55:131
25208994911,26cyclictest14251-21seq12:33:021
2520899490,26cyclictest15845-21seq10:15:501
2520899490,24cyclictest31816-21chrt08:32:091
2520899490,22cyclictest26453-21cut08:20:211
25207994921,7cyclictest9-21ksoftirqd/010:45:290
25207994919,4cyclictest9-21ksoftirqd/011:30:130
25207994918,3cyclictest9-21ksoftirqd/012:21:430
25207994917,4cyclictest9-21ksoftirqd/009:40:270
25207994915,4cyclictest9-21ksoftirqd/012:00:180
134491490,4ptp4l0-21swapper/107:09:151
134491490,4ptp4l0-21swapper/009:27:140
134491490,4ptp4l0-21swapper/008:46:370
134491490,3ptp4l0-21swapper/009:51:480
25207994822,6cyclictest9-21ksoftirqd/008:15:250
25207994821,4cyclictest9-21ksoftirqd/010:42:340
25207994821,3cyclictest9-21ksoftirqd/010:50:200
25207994817,3cyclictest9-21ksoftirqd/009:04:460
25207994815,6cyclictest9-21ksoftirqd/011:00:000
134491480,3ptp4l0-21swapper/011:20:210
134491480,3ptp4l0-21swapper/009:20:030
2520999472,2cyclictest121rcu_preempt10:07:192
25207994719,3cyclictest9-21ksoftirqd/011:15:360
25207994718,4cyclictest9-21ksoftirqd/011:36:340
25207994718,4cyclictest9-21ksoftirqd/010:08:160
25207994717,3cyclictest9-21ksoftirqd/008:40:190
25207994714,5cyclictest9-21ksoftirqd/011:45:140
25207994712,9cyclictest9-21ksoftirqd/012:25:130
134491470,3ptp4l0-21swapper/008:13:460
134491470,3ptp4l0-21swapper/008:13:460
25209994637,3cyclictest33-21ksoftirqd/212:10:122
25209994637,3cyclictest33-21ksoftirqd/212:10:122
25209994633,10cyclictest33-21ksoftirqd/210:45:172
25207994617,4cyclictest9-21ksoftirqd/007:25:180
25207994615,5cyclictest9-21ksoftirqd/008:00:010
134491460,4ptp4l0-21swapper/310:44:243
134491460,4ptp4l0-21swapper/012:33:280
134491460,13ptp4l6765-21cpuspeed07:40:121
25209994510,2cyclictest33-21ksoftirqd/207:25:272
2520899451,29cyclictest14517-21apt-get11:25:111
25207994514,5cyclictest9-21ksoftirqd/011:10:280
25207994510,4cyclictest9-21ksoftirqd/012:05:150
134491450,4ptp4l16812-21apt-get11:30:113
134491450,4ptp4l0-21swapper/209:24:372
134491450,11ptp4l0-21swapper/008:55:120
2520999441,3cyclictest121rcu_preempt12:17:522
2520999441,2cyclictest121rcu_preempt08:10:172
2520999441,2cyclictest121rcu_preempt08:10:162
2520999441,2cyclictest121rcu_preempt07:50:282
2520899440,19cyclictest14041-21runrttasks11:22:141
2520799441,2cyclictest9-21ksoftirqd/009:40:000
134491440,6ptp4l28646-21ls08:25:210
134491440,4ptp4l0-21swapper/010:15:140
134491440,3ptp4l32466-21apt-get09:45:112
134491440,10ptp4l0-21swapper/208:00:232
25209994332,9cyclictest33-21ksoftirqd/211:30:272
2520799431,5cyclictest121rcu_preempt10:20:180
134491430,9ptp4l0-21swapper/210:22:392
134491430,9ptp4l0-21swapper/210:18:582
134491430,9ptp4l0-21swapper/209:59:562
134491430,9ptp4l0-21swapper/209:31:082
134491430,9ptp4l0-21swapper/207:15:292
134491430,8ptp4l0-21swapper/211:25:372
134491430,8ptp4l0-21swapper/211:06:322
134491430,5ptp4l0-21swapper/308:15:203
134491430,4ptp4l0-21swapper/007:51:570
25209994237,3cyclictest33-21ksoftirqd/210:35:002
2520899422,20cyclictest0-21swapper/107:47:301
2520799429,5cyclictest9-21ksoftirqd/007:10:150
25207994210,8cyclictest9-21ksoftirqd/007:20:010
134491420,8ptp4l0-21swapper/212:27:302
134491420,8ptp4l0-21swapper/211:12:192
134491420,4ptp4l9731-21iostat_ios08:55:163
134491420,4ptp4l6920-21df07:40:132
134491420,4ptp4l1585-21meminfo10:55:203
134491420,4ptp4l0-21swapper/308:10:123
134491420,4ptp4l0-21swapper/308:10:123
258362410,6sleep225840-21sh11:49:592
2520999412,8cyclictest121rcu_preempt09:05:192
2520999412,6cyclictest121rcu_preempt11:02:372
2520899411,37cyclictest21354-21diskstats10:30:151
2520899410,24cyclictest25033-21runrttasks09:26:401
25207994135,3cyclictest9-21ksoftirqd/012:35:260
134491410,9ptp4l0-21swapper/212:07:032
134491410,9ptp4l0-21swapper/211:19:582
134491410,5ptp4l0-21swapper/311:55:103
134491410,5ptp4l0-21swapper/210:55:122
134491410,4ptp4l7340-21diskstats10:00:141
134491410,4ptp4l6865-21apt-get08:50:130
134491410,4ptp4l27708-21apt-get08:25:142
134491410,4ptp4l23610-21apt-get10:35:121
134491410,4ptp4l0-21swapper/312:10:153
134491410,4ptp4l0-21swapper/312:10:143
134491410,4ptp4l0-21swapper/311:28:253
134491410,4ptp4l0-21swapper/210:00:162
134491410,4ptp4l0-21swapper/009:45:140
134491410,3ptp4l0-21swapper/308:27:513
2520999400,2cyclictest121rcu_preempt07:47:002
2520899401,28cyclictest18749-21apt-get10:25:131
2520899400,37cyclictest25875-21forks09:30:151
2520899400,22cyclictest9407-21seq12:22:351
134491400,9ptp4l0-21swapper/212:24:252
134491400,9ptp4l0-21swapper/209:04:102
134491400,5ptp4l0-21swapper/307:07:303
134491400,4ptp4l14974-21diskstats12:35:152
134491400,4ptp4l0-21swapper/311:10:163
134491400,4ptp4l0-21swapper/309:50:113
134491400,4ptp4l0-21swapper/308:00:263
134491400,4ptp4l0-21swapper/211:35:192
134491400,4ptp4l0-21swapper/211:20:152
134491400,4ptp4l0-21swapper/210:25:032
134491400,4ptp4l0-21swapper/208:51:212
134491400,4ptp4l0-21swapper/208:23:242
134491400,4ptp4l0-21swapper/108:50:141
134491400,3ptp4l30113-21users10:45:301
134491400,3ptp4l27534-21apt-get07:15:113
134491400,3ptp4l23109-21apt-get10:35:023
134491400,3ptp4l19109-21apt-get11:35:131
25210993933,3cyclictest41-21ksoftirqd/310:45:123
25209993934,3cyclictest33-21ksoftirqd/212:35:002
25209993934,3cyclictest33-21ksoftirqd/211:55:002
25209993934,3cyclictest33-21ksoftirqd/209:15:132
2520999390,2cyclictest121rcu_preempt09:37:202
134491390,5ptp4l1169-21/usr/sbin/munin09:45:231
134491390,5ptp4l0-21swapper/311:00:133
134491390,5ptp4l0-21swapper/107:25:161
134491390,4ptp4l11521-21dpkg07:50:113
134491390,4ptp4l0-21swapper/312:37:573
134491390,4ptp4l0-21swapper/312:31:173
134491390,4ptp4l0-21swapper/312:09:433
134491390,4ptp4l0-21swapper/311:45:243
134491390,4ptp4l0-21swapper/310:20:063
134491390,4ptp4l0-21swapper/310:10:183
134491390,4ptp4l0-21swapper/310:05:223
134491390,4ptp4l0-21swapper/309:45:153
134491390,4ptp4l0-21swapper/309:35:223
134491390,4ptp4l0-21swapper/309:00:123
134491390,4ptp4l0-21swapper/308:45:203
134491390,4ptp4l0-21swapper/308:41:123
134491390,4ptp4l0-21swapper/308:35:173
134491390,4ptp4l0-21swapper/307:45:253
134491390,4ptp4l0-21swapper/210:42:392
134491390,4ptp4l0-21swapper/210:35:252
134491390,4ptp4l0-21swapper/210:11:202
134491390,4ptp4l0-21swapper/209:44:192
134491390,4ptp4l0-21swapper/209:27:342
134491390,4ptp4l0-21swapper/208:55:202
134491390,4ptp4l0-21swapper/208:35:142
134491390,4ptp4l0-21swapper/208:30:232
134491390,4ptp4l0-21swapper/207:34:282
134491390,4ptp4l0-21swapper/207:22:292
134491390,4ptp4l0-21swapper/207:10:022
134491390,3ptp4l32148-21apt-get07:25:113
134491390,3ptp4l29987-21/usr/sbin/munin08:30:103
134491390,3ptp4l17624-21phc2sys10:20:231
25210993831,4cyclictest41-21ksoftirqd/309:33:093
2520999385,7cyclictest33-21ksoftirqd/212:01:092
134491380,5ptp4l0-21swapper/007:09:110
134491380,4ptp4l0-21swapper/312:20:163
134491380,4ptp4l0-21swapper/312:03:113
134491380,4ptp4l0-21swapper/311:40:183
134491380,4ptp4l0-21swapper/311:20:153
134491380,4ptp4l0-21swapper/311:17:453
134491380,4ptp4l0-21swapper/308:50:083
134491380,4ptp4l0-21swapper/308:20:083
134491380,4ptp4l0-21swapper/308:06:233
134491380,4ptp4l0-21swapper/307:55:263
134491380,4ptp4l0-21swapper/307:40:163
134491380,4ptp4l0-21swapper/307:35:083
134491380,4ptp4l0-21swapper/307:30:203
134491380,4ptp4l0-21swapper/307:20:153
134491380,4ptp4l0-21swapper/307:10:023
134491380,4ptp4l0-21swapper/208:06:112
134491380,3ptp4l2522-21perl07:30:151
134491370,4ptp4l0-21swapper/312:18:593
134491370,4ptp4l0-21swapper/311:53:313
134491370,4ptp4l0-21swapper/310:27:243
134491370,4ptp4l0-21swapper/310:16:343
134491370,4ptp4l0-21swapper/309:18:203
134491370,4ptp4l0-21swapper/309:13:313
134491370,3ptp4l0-21swapper/311:36:053
134491370,3ptp4l0-21swapper/309:24:383
134491370,3ptp4l0-21swapper/309:07:263
134491360,4ptp4l0-21swapper/311:08:363
134491360,3ptp4l0-21swapper/310:33:303
134491360,3ptp4l0-21swapper/310:02:493
25210993529,4cyclictest41-21ksoftirqd/309:42:473
134491350,4ptp4l0-21swapper/312:27:473
134491340,3ptp4l0-21swapper/309:56:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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