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2026-07-24 - 06:48
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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 Fri Jul 24, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1314221460,6sleep12563899cyclictest21:00:211
2563899708,24cyclictest134491ptp4l21:30:261
265132680,3sleep20-21swapper/219:10:182
25637996227,5cyclictest9-21ksoftirqd/023:45:000
2563899610,24cyclictest26166-21if_enp1s019:10:161
25637996131,6cyclictest9-21ksoftirqd/020:05:180
134491600,4ptp4l0-21swapper/221:30:292
134491600,4ptp4l0-21swapper/022:00:450
134491600,17ptp4l0-21swapper/220:15:162
25637995930,4cyclictest9-21ksoftirqd/019:55:200
25637995927,6cyclictest9-21ksoftirqd/022:55:170
25637995826,7cyclictest9-21ksoftirqd/021:00:260
25637995825,5cyclictest9-21ksoftirqd/000:30:140
134491580,4ptp4l0-21swapper/121:58:031
134491580,3ptp4l0-21swapper/320:55:313
134491580,3ptp4l0-21swapper/019:06:270
25637995624,5cyclictest9-21ksoftirqd/019:45:000
25637995621,5cyclictest9-21ksoftirqd/019:50:280
25637995618,4cyclictest9-21ksoftirqd/019:45:160
25637995618,4cyclictest9-21ksoftirqd/019:45:160
25637995616,7cyclictest9-21ksoftirqd/020:10:260
134491560,4ptp4l0-21swapper/322:20:123
134491560,4ptp4l0-21swapper/219:51:232
134491560,3ptp4l0-21swapper/319:59:203
134491560,3ptp4l0-21swapper/122:17:251
134491560,3ptp4l0-21swapper/119:25:231
134491560,3ptp4l0-21swapper/023:45:150
25637995526,4cyclictest9-21ksoftirqd/023:25:260
25637995521,4cyclictest9-21ksoftirqd/022:14:070
134491550,4ptp4l0-21swapper/220:21:362
134491550,4ptp4l0-21swapper/200:31:122
134491550,4ptp4l0-21swapper/122:25:411
134491550,4ptp4l0-21swapper/121:27:041
134491550,3ptp4l0-21swapper/222:21:392
25637995427,4cyclictest9-21ksoftirqd/023:35:170
25637995424,5cyclictest9-21ksoftirqd/019:15:280
25637995420,5cyclictest9-21ksoftirqd/020:44:130
25637995419,6cyclictest9-21ksoftirqd/022:15:300
25637995419,6cyclictest9-21ksoftirqd/019:20:180
25637995418,4cyclictest9-21ksoftirqd/023:30:140
25637995417,3cyclictest9-21ksoftirqd/021:50:240
25637995417,3cyclictest9-21ksoftirqd/021:50:240
25637995416,6cyclictest9-21ksoftirqd/019:25:190
134491540,4ptp4l2563899cyclictest00:05:161
134491540,4ptp4l0-21swapper/200:14:332
134491540,3ptp4l0-21swapper/000:17:430
2563799534,5cyclictest121rcu_preempt21:00:000
25637995323,6cyclictest9-21ksoftirqd/000:20:180
25637995321,6cyclictest9-21ksoftirqd/021:25:270
25637995320,6cyclictest9-21ksoftirqd/019:15:000
134491530,5ptp4l0-21swapper/221:13:132
134491530,4ptp4l0-21swapper/222:52:212
134491530,3ptp4l0-21swapper/219:35:232
134491530,3ptp4l0-21swapper/100:28:181
2563899520,50cyclictest5203-21kworker/1:223:22:291
25637995223,4cyclictest9-21ksoftirqd/021:31:130
25637995218,5cyclictest9-21ksoftirqd/023:10:000
25637995216,6cyclictest9-21ksoftirqd/020:45:240
134491520,4ptp4l0-21swapper/221:26:112
134491520,3ptp4l9058-21processes23:10:262
25637995125,6cyclictest9-21ksoftirqd/020:35:270
25637995123,3cyclictest9-21ksoftirqd/022:25:180
25637995112,5cyclictest9-21ksoftirqd/020:15:220
134491510,4ptp4l0-21swapper/223:17:032
134491510,4ptp4l0-21swapper/222:14:582
134491510,4ptp4l0-21swapper/023:59:540
134491510,3ptp4l0-21swapper/223:28:552
134491510,3ptp4l0-21swapper/122:43:401
134491510,3ptp4l0-21swapper/122:08:261
25637995023,3cyclictest9-21ksoftirqd/021:44:290
25637995021,6cyclictest9-21ksoftirqd/000:40:000
25637995020,8cyclictest9-21ksoftirqd/020:28:080
25637995015,6cyclictest9-21ksoftirqd/000:00:240
25637995010,6cyclictest9-21ksoftirqd/000:10:270
134491500,4ptp4l0-21swapper/123:56:461
25639994937,3cyclictest33-21ksoftirqd/221:45:202
2563799492,6cyclictest9-21ksoftirqd/021:15:250
25637994920,9cyclictest9-21ksoftirqd/022:42:270
25637994920,8cyclictest9-21ksoftirqd/022:08:410
2563799491,2cyclictest121rcu_preempt22:40:000
134491490,9ptp4l0-21swapper/320:25:233
134491490,5ptp4l0-21swapper/119:05:311
134491490,3ptp4l0-21swapper/021:09:200
2563899481,45cyclictest21939-21kworker/1:122:51:091
25637994818,5cyclictest9-21ksoftirqd/021:45:280
134491480,4ptp4l0-21swapper/220:40:482
134491480,4ptp4l0-21swapper/219:23:422
134491480,4ptp4l0-21swapper/000:27:540
134491480,3ptp4l0-21swapper/123:52:451
25639994735,9cyclictest33-21ksoftirqd/219:25:292
25639994717,13cyclictest33-21ksoftirqd/221:00:002
2563799473,1cyclictest0-21swapper/023:55:000
2563799472,3cyclictest121rcu_preempt20:34:590
25637994723,6cyclictest9-21ksoftirqd/020:03:140
25637994717,4cyclictest9-21ksoftirqd/022:50:200
134491470,8ptp4l0-21swapper/321:23:263
134491470,7ptp4l0-21swapper/320:45:243
134491470,6ptp4l0-21swapper/023:10:210
134491470,4ptp4l0-21swapper/223:22:112
25639994634,10cyclictest33-21ksoftirqd/219:55:292
2563799462,2cyclictest121rcu_preempt20:20:160
2563799460,5cyclictest121rcu_preempt19:39:590
2563799460,2cyclictest134491ptp4l21:20:270
134491460,5ptp4l665-21apt-get21:45:121
134491460,4ptp4l0-21swapper/222:31:052
134491460,3ptp4l121rcu_preempt00:10:223
134491460,3ptp4l0-21swapper/200:10:012
134491460,3ptp4l0-21swapper/000:06:370
25640994514,17cyclictest21732-21/usr/sbin/munin22:30:133
25639994539,3cyclictest33-21ksoftirqd/219:34:592
25637994533,3cyclictest9-21ksoftirqd/023:15:210
2563799452,2cyclictest121rcu_preempt23:05:000
2563799451,3cyclictest121rcu_preempt22:45:250
134491450,6ptp4l0-21swapper/219:06:592
134491450,3ptp4l0-21swapper/221:50:052
134491450,3ptp4l0-21swapper/221:50:052
134491450,11ptp4l15192-21cpuspeed_turbos00:35:141
25639994439,3cyclictest7577-21sh23:10:002
25639994439,3cyclictest33-21ksoftirqd/221:20:002
25639994439,3cyclictest33-21ksoftirqd/200:20:012
2563799442,2cyclictest121rcu_preempt21:35:130
134491440,4ptp4l24043-21apt-get22:35:111
134491440,4ptp4l14689-21apt-get21:05:133
134491440,3ptp4l0-21swapper/321:39:483
134491440,3ptp4l0-21swapper/221:41:512
134491440,3ptp4l0-21swapper/119:19:501
134491440,14ptp4l0-21swapper/121:40:131
25639994331,9cyclictest33-21ksoftirqd/219:40:132
2563799433,3cyclictest121rcu_preempt22:20:190
2563799432,2cyclictest121rcu_preempt21:55:240
2563799431,3cyclictest121rcu_preempt20:55:000
25637994313,7cyclictest9-21ksoftirqd/021:10:150
134491430,9ptp4l0-21swapper/223:43:422
134491430,6ptp4l0-21swapper/319:05:173
134491430,5ptp4l0-21swapper/322:15:133
134491430,5ptp4l0-21swapper/219:15:122
134491430,4ptp4l14790-21apt-get23:25:113
134491430,3ptp4l5046-21apt-get19:35:111
134491430,3ptp4l2564099cyclictest23:17:493
134491430,3ptp4l23104-21ls21:20:312
25639994238,2cyclictest33-21ksoftirqd/223:05:002
2563799421,2cyclictest121rcu_preempt22:30:160
134491420,5ptp4l3861-21ntp_states19:30:210
134491420,5ptp4l19845-21iostat21:15:191
134491420,5ptp4l12166-21apt-get19:50:143
134491420,5ptp4l0-21swapper/220:25:112
134491420,4ptp4l0-21swapper/220:45:302
134491420,4ptp4l0-21swapper/220:06:182
134491420,3ptp4l28975-21diskstats22:45:152
134491420,3ptp4l0-21swapper/320:36:083
25639994136,3cyclictest33-21ksoftirqd/222:35:222
2563899411,39cyclictest21939-21kworker/1:123:01:291
2563799411,3cyclictest121rcu_preempt23:20:190
134491410,5ptp4l0-21swapper/321:30:253
134491410,5ptp4l0-21swapper/220:30:102
134491410,5ptp4l0-21swapper/219:45:112
134491410,5ptp4l0-21swapper/219:45:112
134491410,5ptp4l0-21swapper/121:10:131
134491410,4ptp4l9867-21users00:20:301
134491410,4ptp4l28651-21/usr/sbin/munin22:45:263
134491410,4ptp4l2746-21apt-get19:30:113
134491410,4ptp4l14816-21df_inode19:55:161
134491410,4ptp4l10964-21irqstats23:15:181
134491410,4ptp4l0-21swapper/322:00:173
134491410,4ptp4l0-21swapper/321:40:153
134491410,4ptp4l0-21swapper/320:10:143
134491410,4ptp4l0-21swapper/222:41:352
134491410,4ptp4l0-21swapper/100:03:541
134491410,3ptp4l9241-21ls22:00:272
134491410,3ptp4l8528-21ls20:50:211
134491410,3ptp4l24208-21apt-get23:45:121
134491410,3ptp4l0-21swapper/119:30:171
2563999400,3cyclictest121rcu_preempt23:47:492
2563899401,37cyclictest5203-21kworker/1:223:25:291
134491400,5ptp4l7811-21/usr/sbin/munin23:10:253
134491400,5ptp4l12453-21df_abs19:50:161
134491400,5ptp4l0-21swapper/322:11:593
134491400,5ptp4l0-21swapper/321:50:213
134491400,5ptp4l0-21swapper/321:50:213
134491400,5ptp4l0-21swapper/321:13:113
134491400,5ptp4l0-21swapper/319:40:123
134491400,5ptp4l0-21swapper/223:30:042
134491400,5ptp4l0-21swapper/222:28:322
134491400,5ptp4l0-21swapper/200:03:592
134491400,5ptp4l0-21swapper/121:35:171
134491400,5ptp4l0-21swapper/120:55:141
134491400,5ptp4l0-21swapper/100:13:021
134491400,4ptp4l6083-21df00:15:161
134491400,4ptp4l21263-21users23:35:271
134491400,4ptp4l17577-21perl22:20:161
134491400,4ptp4l13996-21ls23:20:283
134491400,4ptp4l0-21swapper/323:35:163
134491400,4ptp4l0-21swapper/323:05:133
134491400,4ptp4l0-21swapper/321:47:323
134491400,4ptp4l0-21swapper/320:40:123
134491400,4ptp4l0-21swapper/222:56:322
134491400,4ptp4l0-21swapper/221:55:282
134491400,4ptp4l0-21swapper/123:33:551
134491400,4ptp4l0-21swapper/119:20:271
134491400,3ptp4l6101-21iostat_ios23:05:191
134491400,3ptp4l32382-21ls22:50:273
134491400,3ptp4l29684-21ls22:45:211
134491400,3ptp4l0-21swapper/320:23:573
25639993934,3cyclictest33-21ksoftirqd/223:51:592
25639993934,3cyclictest33-21ksoftirqd/220:50:182
2563999391,3cyclictest121rcu_preempt00:20:172
134491390,4ptp4l19594-21apt-get23:35:102
134491390,4ptp4l19118-21/usr/sbin/munin20:05:233
134491390,4ptp4l16501-21kworker/3:023:00:173
134491390,4ptp4l0-21swapper/322:55:153
134491390,4ptp4l0-21swapper/322:05:273
134491390,4ptp4l0-21swapper/321:55:213
134491390,4ptp4l0-21swapper/321:25:203
134491390,4ptp4l0-21swapper/320:55:003
134491390,4ptp4l0-21swapper/319:47:343
134491390,4ptp4l0-21swapper/319:47:343
134491390,4ptp4l0-21swapper/319:24:193
134491390,4ptp4l0-21swapper/319:15:243
134491390,4ptp4l0-21swapper/300:16:423
134491390,4ptp4l0-21swapper/300:05:173
134491390,4ptp4l0-21swapper/221:35:472
134491390,4ptp4l0-21swapper/221:05:122
134491390,4ptp4l0-21swapper/220:13:232
134491390,4ptp4l0-21swapper/200:36:062
134491390,4ptp4l0-21swapper/200:26:042
134491390,4ptp4l0-21swapper/123:10:131
134491390,4ptp4l0-21swapper/122:55:151
134491390,4ptp4l0-21swapper/122:30:131
134491390,4ptp4l0-21swapper/122:10:011
134491390,4ptp4l0-21swapper/122:01:511
134491390,4ptp4l0-21swapper/120:15:191
134491390,4ptp4l0-21swapper/100:30:281
134491390,3ptp4l27937-21ls22:40:283
134491390,3ptp4l16841-21apt-get23:30:033
134491390,3ptp4l12330-21df21:00:142
134491390,3ptp4l0-21swapper/222:15:172
134491380,4ptp4l22200-21df_abs23:40:161
134491380,4ptp4l0-21swapper/323:51:483
134491380,4ptp4l0-21swapper/322:36:413
134491380,4ptp4l0-21swapper/322:26:053
134491380,4ptp4l0-21swapper/321:16:163
134491380,4ptp4l0-21swapper/321:00:243
134491380,4ptp4l0-21swapper/320:03:293
134491380,4ptp4l0-21swapper/319:25:153
134491380,4ptp4l0-21swapper/319:13:563
134491380,4ptp4l0-21swapper/300:38:283
134491380,4ptp4l0-21swapper/300:31:283
134491380,4ptp4l0-21swapper/300:28:023
134491380,4ptp4l0-21swapper/300:02:363
134491380,4ptp4l0-21swapper/223:55:552
134491380,4ptp4l0-21swapper/220:36:292
134491380,4ptp4l0-21swapper/121:53:171
134491380,4ptp4l0-21swapper/121:53:171
134491380,4ptp4l0-21swapper/120:47:461
134491380,4ptp4l0-21swapper/120:37:521
134491380,4ptp4l0-21swapper/120:06:391
134491380,4ptp4l0-21swapper/119:47:521
134491380,4ptp4l0-21swapper/119:47:521
134491380,3ptp4l0-21swapper/320:31:193
134491380,3ptp4l0-21swapper/320:16:433
134491380,2ptp4l6087-21strings19:35:213
25638993731,4cyclictest25-21ksoftirqd/120:34:341
134491370,4ptp4l3501-21irqrtprio20:40:191
134491370,4ptp4l0-21swapper/300:20:203
134491370,4ptp4l0-21swapper/222:07:132
134491370,4ptp4l0-21swapper/220:01:322
134491370,4ptp4l0-21swapper/121:05:361
134491370,4ptp4l0-21swapper/119:40:141
134491370,3ptp4l0-21swapper/323:46:113
134491370,3ptp4l0-21swapper/121:20:191
134491370,3ptp4l0-21swapper/120:24:031
134491370,3ptp4l0-21swapper/120:13:411
134491370,3ptp4l0-21swapper/120:03:221
134491360,4ptp4l0-21swapper/323:41:143
134491360,4ptp4l0-21swapper/120:25:251
134491360,3ptp4l0-21swapper/323:56:523
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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