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2026-08-04 - 21:38
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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 Aug 04, 2026 12:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2841021740,3sleep12577199cyclictest09:35:131
3267821520,5sleep22577299cyclictest10:50:242
2494321420,6sleep02577099cyclictest08:15:280
134491700,4ptp4l11788-21ntp_states12:25:232
134491670,3ptp4l0-21swapper/212:35:592
134491640,4ptp4l5426-21users12:10:282
2577399628,8cyclictest0-21swapper/310:25:223
2577399627,7cyclictest0-21swapper/311:10:233
134491610,3ptp4l10018-21df_inode08:55:162
2577399609,7cyclictest0-21swapper/310:30:153
134491600,4ptp4l0-21swapper/210:20:212
134491600,3ptp4l29470-21df10:45:132
2577399591,10cyclictest28190-21perf09:35:003
2577399576,6cyclictest0-21swapper/309:20:223
2577399573,16cyclictest22407-21cpuspeed_turbos11:40:153
134491570,5ptp4l0-21swapper/210:40:232
134491570,5ptp4l0-21swapper/107:09:381
134491570,5ptp4l0-21swapper/007:14:390
134491560,4ptp4l0-21swapper/207:32:232
134491560,4ptp4l0-21swapper/207:18:232
134491560,3ptp4l0-21swapper/309:41:263
134491560,3ptp4l0-21swapper/211:55:262
134491560,3ptp4l0-21swapper/207:35:202
134491550,5ptp4l0-21swapper/007:07:200
134491550,4ptp4l0-21swapper/211:46:352
2577399540,11cyclictest1623-21mailstats07:25:263
134491530,4ptp4l0-21swapper/209:52:472
134491530,4ptp4l0-21swapper/207:20:592
2577399526,7cyclictest0-21swapper/311:55:173
2577399526,6cyclictest0-21swapper/307:35:193
134491520,5ptp4l0-21swapper/209:47:432
134491520,4ptp4l0-21swapper/212:32:142
134491520,4ptp4l0-21swapper/211:33:172
134491520,4ptp4l0-21swapper/211:23:192
134491520,4ptp4l0-21swapper/211:07:402
134491520,4ptp4l0-21swapper/209:02:462
134491520,4ptp4l0-21swapper/209:02:462
134491520,4ptp4l0-21swapper/011:29:370
134491520,3ptp4l0-21swapper/209:42:342
2577399516,5cyclictest7159-21sed11:05:223
134491510,4ptp4l0-21swapper/211:39:412
134491510,4ptp4l0-21swapper/211:27:022
134491510,4ptp4l0-21swapper/208:35:232
134491510,4ptp4l0-21swapper/108:52:301
134491510,3ptp4l0-21swapper/210:59:512
134491510,3ptp4l0-21swapper/208:29:542
134491510,12ptp4l0-21swapper/208:47:182
52582500,3sleep10-21swapper/108:45:141
2577399508,6cyclictest0-21swapper/307:20:223
2577399502,6cyclictest16348-21cat10:15:273
134491500,5ptp4l0-21swapper/210:12:062
134491500,4ptp4l0-21swapper/208:01:262
134491500,4ptp4l0-21swapper/207:45:512
134491500,4ptp4l0-21swapper/107:47:481
134491490,4ptp4l0-21swapper/209:07:362
2577399487,6cyclictest0-21swapper/311:35:253
2577399487,6cyclictest0-21swapper/309:35:173
2577399486,7cyclictest0-21swapper/310:45:183
2577399482,6cyclictest2002-21phc2sys09:45:233
2577099485,3cyclictest9-21ksoftirqd/009:55:000
134491480,4ptp4l0-21swapper/208:43:082
134491480,3ptp4l0-21swapper/210:27:532
134491480,3ptp4l0-21swapper/209:14:542
2577399478,6cyclictest0-21swapper/307:40:183
2577399477,6cyclictest0-21swapper/312:35:253
2577399477,6cyclictest0-21swapper/307:52:393
2577399476,7cyclictest0-21swapper/310:50:253
2577399476,7cyclictest0-21swapper/310:10:183
2577399472,5cyclictest0-21swapper/308:18:293
2577099476,3cyclictest121rcu_preempt11:35:000
2577099474,2cyclictest121rcu_preempt09:00:150
2577099474,2cyclictest121rcu_preempt09:00:150
134491470,4ptp4l16544-21apt-get08:00:143
134491470,4ptp4l0-21swapper/212:05:352
134491470,4ptp4l0-21swapper/211:00:592
134491470,4ptp4l0-21swapper/209:55:252
134491470,3ptp4l0-21swapper/208:53:532
2577399467,6cyclictest0-21swapper/310:20:193
2577399467,6cyclictest0-21swapper/308:10:193
2577399462,10cyclictest0-21swapper/311:17:363
2577099463,3cyclictest121rcu_preempt12:35:000
134491460,9ptp4l0-21swapper/009:14:380
134491460,3ptp4l0-21swapper/209:25:182
134491460,3ptp4l0-21swapper/207:10:452
2577399457,6cyclictest0-21swapper/311:50:153
2577399457,6cyclictest0-21swapper/307:45:163
2577399455,6cyclictest0-21swapper/311:00:153
2577399452,7cyclictest0-21swapper/312:00:273
2577399451,5cyclictest0-21swapper/310:08:103
2577399451,11cyclictest0-21swapper/309:59:443
25771994531,4cyclictest25-21ksoftirqd/111:01:001
2577199452,3cyclictest121rcu_preempt11:54:591
2577099454,3cyclictest9-21ksoftirqd/009:25:280
134491450,9ptp4l0-21swapper/009:19:000
134491450,6ptp4l9-21ksoftirqd/007:46:360
134491450,4ptp4l3756-21apt-get12:10:131
134491450,4ptp4l0-21swapper/209:20:012
2577399445,6cyclictest0-21swapper/310:00:173
2577099443,3cyclictest121rcu_preempt10:15:010
134491440,5ptp4l0-21swapper/010:25:130
134491440,4ptp4l25800-21apt-get07:10:123
134491440,4ptp4l0-21swapper/208:16:112
134491440,4ptp4l0-21swapper/208:10:032
134491440,3ptp4l0-21swapper/209:38:072
2577399438,7cyclictest0-21swapper/309:15:293
2577399437,6cyclictest0-21swapper/307:16:533
2577399436,5cyclictest0-21swapper/311:20:323
25771994338,3cyclictest25-21ksoftirqd/112:40:011
2577099432,3cyclictest121rcu_preempt12:05:010
134491430,5ptp4l19193-21apt-get09:15:142
134491430,4ptp4l1397-21apt-get12:05:133
134491430,4ptp4l0-21swapper/210:19:242
134491430,4ptp4l0-21swapper/007:41:030
2577399427,6cyclictest0-21swapper/308:47:323
2577399424,2cyclictest134491ptp4l12:27:003
25771994238,3cyclictest25-21ksoftirqd/110:40:011
25771994237,3cyclictest25-21ksoftirqd/111:59:591
2577099425,2cyclictest121rcu_preempt10:00:010
25770994227,3cyclictest9-21ksoftirqd/012:20:220
25770994227,3cyclictest9-21ksoftirqd/012:10:220
134491420,9ptp4l0-21swapper/212:22:182
134491420,8ptp4l0-21swapper/009:42:350
134491420,6ptp4l2577199cyclictest09:05:001
134491420,6ptp4l0-21swapper/308:20:163
134491420,5ptp4l7072-21/usr/sbin/munin12:15:190
134491420,5ptp4l0-21swapper/212:00:112
134491420,5ptp4l0-21swapper/207:40:252
134491420,5ptp4l0-21swapper/109:00:241
134491420,5ptp4l0-21swapper/109:00:241
134491420,5ptp4l0-21swapper/012:05:190
134491420,5ptp4l0-21swapper/010:30:020
134491420,4ptp4l0-21swapper/212:16:502
134491420,4ptp4l0-21swapper/010:00:180
134491420,3ptp4l4337-21users07:30:293
134491420,3ptp4l4117-21ls08:40:281
134491420,3ptp4l24588-21apt-get11:45:113
134491420,3ptp4l2318-21gnome-shell08:55:591
134491420,3ptp4l14174-21apt-get07:55:142
134491420,10ptp4l0-21swapper/008:13:190
25771994134,4cyclictest25-21ksoftirqd/111:35:311
2577099415,3cyclictest121rcu_preempt08:45:010
25770994127,3cyclictest9-21ksoftirqd/008:05:130
134491410,9ptp4l0-21swapper/011:48:470
134491410,8ptp4l0-21swapper/012:36:170
134491410,7ptp4l9-21ksoftirqd/010:21:460
134491410,5ptp4l0-21swapper/310:40:143
134491410,5ptp4l0-21swapper/010:35:190
134491410,5ptp4l0-21swapper/007:20:150
134491410,4ptp4l854-21iostat_ios07:25:190
134491410,4ptp4l7730-21diskstats08:50:163
134491410,4ptp4l30348-21apt-get08:30:122
134491410,4ptp4l30334-21/usr/sbin/munin08:30:143
134491410,4ptp4l28620-21iostat08:25:203
134491410,4ptp4l0-21swapper/210:06:052
134491410,4ptp4l0-21swapper/210:04:462
134491410,4ptp4l0-21swapper/011:35:540
134491410,4ptp4l0-21swapper/011:05:190
134491410,4ptp4l0-21swapper/009:47:440
134491410,4ptp4l0-21swapper/008:25:280
134491410,3ptp4l22295-21apt-get11:40:142
134491410,3ptp4l11626-21memory12:25:220
2577399401,8cyclictest0-21swapper/310:57:513
25771994035,3cyclictest25-21ksoftirqd/111:50:001
25771994035,3cyclictest25-21ksoftirqd/110:05:001
25771994026,3cyclictest25-21ksoftirqd/111:10:231
25771994025,3cyclictest25-21ksoftirqd/109:45:261
2577199401,2cyclictest121rcu_preempt07:20:201
25770994025,3cyclictest9-21ksoftirqd/011:40:250
2577099402,3cyclictest121rcu_preempt10:05:200
134491400,5ptp4l0-21swapper/312:30:153
134491400,5ptp4l0-21swapper/311:25:253
134491400,5ptp4l0-21swapper/309:50:123
134491400,5ptp4l0-21swapper/211:50:142
134491400,5ptp4l0-21swapper/207:50:182
134491400,5ptp4l0-21swapper/109:25:141
134491400,4ptp4l502-21df_inode08:35:140
134491400,4ptp4l4706-21meminfo12:10:213
134491400,4ptp4l18018-21ntp_states09:10:263
134491400,4ptp4l0-21swapper/307:55:303
134491400,4ptp4l0-21swapper/210:37:572
134491400,4ptp4l0-21swapper/209:30:212
134491400,4ptp4l0-21swapper/011:55:430
134491400,4ptp4l0-21swapper/011:17:520
134491400,4ptp4l0-21swapper/011:10:030
134491400,4ptp4l0-21swapper/010:57:020
134491400,4ptp4l0-21swapper/010:45:450
134491400,4ptp4l0-21swapper/010:18:010
134491400,4ptp4l0-21swapper/009:36:070
134491400,4ptp4l0-21swapper/009:31:500
134491400,4ptp4l0-21swapper/008:57:500
134491400,4ptp4l0-21swapper/008:52:180
134491400,4ptp4l0-21swapper/008:20:150
134491400,4ptp4l0-21swapper/007:30:470
134491400,4ptp4l0-21swapper/007:17:430
134491400,3ptp4l20259-21ls08:05:273
134491400,3ptp4l16974-21hddtemp_smartct08:00:180
134491400,3ptp4l0-21swapper/211:12:382
2577399392,24cyclictest0-21swapper/312:21:583
25771993935,3cyclictest25-21ksoftirqd/110:45:011
25771993934,3cyclictest25-21ksoftirqd/112:35:011
25771993934,3cyclictest25-21ksoftirqd/112:25:191
25771993934,3cyclictest25-21ksoftirqd/111:30:191
25771993934,3cyclictest25-21ksoftirqd/109:54:591
25771993928,9cyclictest25-21ksoftirqd/107:55:261
25771993925,3cyclictest25-21ksoftirqd/110:50:221
25771993924,4cyclictest25-21ksoftirqd/107:35:221
25771993924,4cyclictest25-21ksoftirqd/107:15:291
25771993923,4cyclictest25-21ksoftirqd/110:15:221
134491390,5ptp4l0-21swapper/010:44:060
134491390,4ptp4l0-21swapper/312:16:533
134491390,4ptp4l0-21swapper/309:04:243
134491390,4ptp4l0-21swapper/309:04:243
134491390,4ptp4l0-21swapper/308:35:223
134491390,4ptp4l0-21swapper/211:15:182
134491390,4ptp4l0-21swapper/210:31:002
134491390,4ptp4l0-21swapper/208:22:522
134491390,4ptp4l0-21swapper/207:25:072
134491390,4ptp4l0-21swapper/107:40:431
134491390,4ptp4l0-21swapper/011:50:520
134491390,4ptp4l0-21swapper/011:20:330
134491390,4ptp4l0-21swapper/011:00:540
134491390,4ptp4l0-21swapper/010:53:150
134491390,4ptp4l0-21swapper/009:07:200
134491390,4ptp4l0-21swapper/008:31:140
134491390,4ptp4l0-21swapper/007:57:160
134491390,4ptp4l0-21swapper/007:50:220
134491390,4ptp4l0-21swapper/007:36:400
134491390,3ptp4l18838-21apt-get08:05:132
134491390,3ptp4l0-21swapper/311:30:213
134491390,3ptp4l0-21swapper/009:20:010
134491390,2ptp4l24849-21strings09:25:243
134491390,2ptp4l11059-21python08:55:263
25771993833,3cyclictest25-21ksoftirqd/112:05:221
25771993833,3cyclictest25-21ksoftirqd/111:25:001
25771993824,3cyclictest25-21ksoftirqd/108:05:281
25771993823,4cyclictest25-21ksoftirqd/112:20:271
25771993819,4cyclictest25-21ksoftirqd/108:25:231
25771993814,2cyclictest25-21ksoftirqd/107:32:551
2577199381,3cyclictest121rcu_preempt10:55:161
134491380,4ptp4l0-21swapper/310:35:163
134491380,4ptp4l0-21swapper/309:05:213
134491380,4ptp4l0-21swapper/308:42:493
134491380,4ptp4l0-21swapper/109:43:521
134491380,4ptp4l0-21swapper/108:33:311
134491380,4ptp4l0-21swapper/008:45:440
134491380,3ptp4l0-21swapper/111:29:511
134491380,3ptp4l0-21swapper/108:20:211
25771993732,3cyclictest25-21ksoftirqd/110:10:191
25771993732,3cyclictest25-21ksoftirqd/109:31:561
25771993723,3cyclictest25-21ksoftirqd/111:40:291
134491370,3ptp4l0-21swapper/109:24:491
134491370,3ptp4l0-21swapper/109:17:121
134491370,3ptp4l0-21swapper/108:35:271
134491370,3ptp4l0-21swapper/107:11:271
25771993632,2cyclictest25-21ksoftirqd/110:05:231
25771993631,3cyclictest25-21ksoftirqd/110:35:011
25771993631,3cyclictest25-21ksoftirqd/107:30:001
25771993622,3cyclictest25-21ksoftirqd/112:20:011
25771993622,3cyclictest25-21ksoftirqd/108:00:131
25771993621,4cyclictest25-21ksoftirqd/110:45:161
134491360,3ptp4l0-21swapper/112:01:321
134491360,3ptp4l0-21swapper/110:22:361
134491360,3ptp4l0-21swapper/109:12:571
134491360,3ptp4l0-21swapper/108:16:091
134491360,3ptp4l0-21swapper/108:12:451
25771993521,3cyclictest25-21ksoftirqd/111:20:001
25771993519,4cyclictest25-21ksoftirqd/110:25:271
134491350,3ptp4l0-21swapper/111:05:001
25771993420,3cyclictest25-21ksoftirqd/107:50:231
2577199320,3cyclictest121rcu_preempt09:55:161
137891235,10phc2sys0-21swapper/307:05:143
253282114,3sleep20-21swapper/207:08:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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