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2026-09-24 - 08:24
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Thu Sep 24, 2026 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2080321670,6sleep12335899cyclictest22:30:251
495221340,3sleep02335799cyclictest21:55:270
2336099762,71cyclictest0-21swapper/322:05:003
134491630,4ptp4l0-21swapper/120:45:201
134491630,3ptp4l8413-21/usr/sbin/munin00:25:292
2336099613,16cyclictest0-21swapper/321:50:273
134491610,4ptp4l0-21swapper/320:25:023
134491600,4ptp4l2617-21ntp_states00:10:192
134491600,18ptp4l0-21swapper/220:00:282
134491600,17ptp4l0-21swapper/220:54:202
117002600,4sleep20-21swapper/222:10:332
134491590,3ptp4l0-21swapper/300:22:173
2336099583,13cyclictest0-21swapper/319:30:253
2336099580,12cyclictest28147-21chrt22:46:323
142432580,4sleep30-21swapper/323:25:233
134491580,4ptp4l0-21swapper/300:37:423
134491580,4ptp4l0-21swapper/222:48:462
2336099570,54cyclictest1317-21runrttasks20:17:503
2336099570,53cyclictest29242-21cut20:30:213
2336099563,17cyclictest0-21swapper/319:55:163
2336099560,12cyclictest5186-21chrt21:58:113
2336099560,11cyclictest21892-21sh23:44:593
134491560,4ptp4l0-21swapper/222:55:102
134491560,3ptp4l0-21swapper/219:21:252
134491560,3ptp4l0-21swapper/121:45:261
134491560,20ptp4l0-21swapper/023:14:360
2336099550,18cyclictest30696-21taskset22:54:463
2336099550,15cyclictest23862-21chrt23:45:533
2336099550,12cyclictest21286-21taskset21:21:203
2336099550,11cyclictest32757-21chrt21:45:513
2336099550,11cyclictest25933-21taskset22:42:353
134491550,4ptp4l0-21swapper/220:30:392
134491550,4ptp4l0-21swapper/121:11:031
134491550,4ptp4l0-21swapper/019:59:120
134491550,3ptp4l0-21swapper/220:40:232
2336099540,44cyclictest4328-21ntpq23:05:223
2336099540,10cyclictest11528-21taskset19:52:363
134491540,9ptp4l21030-21apt-get19:05:112
134491540,5ptp4l0-21swapper/100:22:191
134491540,5ptp4l0-21swapper/019:08:040
134491540,4ptp4l0-21swapper/221:00:482
134491540,4ptp4l0-21swapper/220:25:422
134491540,4ptp4l0-21swapper/200:39:292
134491540,4ptp4l0-21swapper/123:34:491
134491540,4ptp4l0-21swapper/021:07:230
134491540,4ptp4l0-21swapper/021:00:170
134491540,4ptp4l0-21swapper/020:49:100
134491540,3ptp4l0-21swapper/219:15:222
134491540,3ptp4l0-21swapper/119:48:421
134491540,3ptp4l0-21swapper/019:22:460
2336099530,12cyclictest16009-21chrt20:00:523
2336099530,11cyclictest32728-21taskset20:37:393
2336099530,11cyclictest18508-21taskset20:05:463
134491530,4ptp4l0-21swapper/222:19:482
134491530,4ptp4l0-21swapper/222:02:162
134491530,4ptp4l0-21swapper/220:19:222
134491530,4ptp4l0-21swapper/022:17:060
134491530,3ptp4l0-21swapper/121:40:111
134491530,12ptp4l0-21swapper/219:55:232
2336099520,12cyclictest2803-21taskset23:02:413
2336099520,11cyclictest27492-21chrt19:16:583
2336099520,11cyclictest1195-21hddtemp_smartct20:40:163
134491520,4ptp4l0-21swapper/222:43:142
134491520,4ptp4l0-21swapper/222:09:282
134491520,4ptp4l0-21swapper/121:37:321
134491520,4ptp4l0-21swapper/120:33:321
134491520,3ptp4l0-21swapper/122:21:431
2336099510,11cyclictest18648-21cat22:25:263
134491510,4ptp4l0-21swapper/222:38:262
134491510,4ptp4l0-21swapper/220:56:582
134491510,4ptp4l0-21swapper/123:19:451
134491510,4ptp4l0-21swapper/100:32:031
2336099500,11cyclictest19210-21chrt23:36:073
134491500,4ptp4l0-21swapper/223:52:152
134491500,4ptp4l0-21swapper/119:14:101
134491500,4ptp4l0-21swapper/023:57:210
134491500,3ptp4l0-21swapper/221:52:122
134491500,3ptp4l0-21swapper/020:01:520
2336099493,10cyclictest0-21swapper/300:00:173
2336099490,11cyclictest23658-21chrt21:27:143
134491490,4ptp4l0-21swapper/221:34:542
134491490,11ptp4l0-21swapper/222:50:362
134491480,5ptp4l0-21swapper/219:10:242
134491480,4ptp4l10367-21apt-get23:20:103
134491480,4ptp4l0-21swapper/221:25:002
134491470,5ptp4l0-21swapper/119:09:161
134491470,4ptp4l0-21swapper/222:20:242
134491470,3ptp4l7540-21kworker/2:123:55:032
134491470,10ptp4l0-21swapper/021:15:020
2336099462,11cyclictest0-21swapper/320:45:153
2336099461,7cyclictest31940-21ls19:25:253
134491460,9ptp4l0-21swapper/023:42:350
134491460,4ptp4l0-21swapper/219:52:382
134491460,3ptp4l0-21swapper/020:50:170
2336099450,42cyclictest8692-21wc20:55:233
2335899451,9cyclictest25-21ksoftirqd/123:20:191
134491450,9ptp4l0-21swapper/023:20:560
134491450,9ptp4l0-21swapper/022:58:430
134491450,9ptp4l0-21swapper/021:45:590
134491450,9ptp4l0-21swapper/020:57:200
134491450,4ptp4l23395-21apt-get19:10:103
134491450,4ptp4l0-21swapper/223:02:222
134491450,3ptp4l0-21swapper/020:23:160
134491450,10ptp4l0-21swapper/320:12:043
134491450,10ptp4l0-21swapper/219:35:272
134491450,10ptp4l0-21swapper/019:34:360
2336099445,10cyclictest0-21swapper/323:55:513
134491440,9ptp4l0-21swapper/219:34:342
134491440,9ptp4l0-21swapper/021:53:320
134491440,9ptp4l0-21swapper/000:03:330
134491440,8ptp4l0-21swapper/020:29:030
134491440,5ptp4l7589-21apt-get23:15:022
134491440,5ptp4l0-21swapper/200:30:122
134491440,4ptp4l24134-21apt-get21:30:160
134491440,4ptp4l0-21swapper/120:15:281
134491440,4ptp4l0-21swapper/100:14:011
134491440,3ptp4l5543-21apt-get23:10:172
134491440,3ptp4l0-21swapper/221:39:342
2336099431,38cyclictest8628-21processes19:45:273
2336099430,12cyclictest19123-21chrt21:19:033
2336099430,10cyclictest15954-21mailstats21:10:283
23358994338,3cyclictest25-21ksoftirqd/121:00:001
23357994338,3cyclictest9-21ksoftirqd/020:15:000
134491430,9ptp4l0-21swapper/223:33:062
134491430,5ptp4l0-21swapper/122:15:191
134491430,4ptp4l0-21swapper/319:24:193
134491430,4ptp4l0-21swapper/022:00:060
134491430,4ptp4l0-21swapper/021:20:020
134491430,3ptp4l31363-21irqstats19:25:190
134491430,3ptp4l231rcuc/121:25:221
134491430,3ptp4l0-21swapper/323:18:493
134491430,3ptp4l0-21swapper/122:09:531
134491430,3ptp4l0-21swapper/120:42:561
23358994237,3cyclictest25-21ksoftirqd/123:00:001
134491420,9ptp4l0-21swapper/000:18:290
134491420,8ptp4l0-21swapper/022:54:470
134491420,5ptp4l29482-21hddtemp_smartct00:00:171
134491420,5ptp4l0-21swapper/300:08:543
134491420,5ptp4l0-21swapper/223:35:252
134491420,5ptp4l0-21swapper/220:20:122
134491420,5ptp4l0-21swapper/123:00:231
134491420,5ptp4l0-21swapper/020:30:180
134491420,4ptp4l23264-21/usr/sbin/munin23:45:230
134491420,4ptp4l17470-21apt-get23:35:131
134491420,4ptp4l15760-21memory22:20:193
134491420,4ptp4l15110-21df_inode22:20:140
134491420,4ptp4l10047-21apt-get21:00:103
134491420,4ptp4l0-21swapper/322:10:093
134491420,4ptp4l0-21swapper/321:41:383
134491420,4ptp4l0-21swapper/321:30:293
134491420,4ptp4l0-21swapper/223:40:122
134491420,4ptp4l0-21swapper/222:33:362
134491420,4ptp4l0-21swapper/221:40:382
134491420,4ptp4l0-21swapper/200:00:142
134491420,4ptp4l0-21swapper/120:52:561
134491420,4ptp4l0-21swapper/120:29:441
134491420,4ptp4l0-21swapper/120:20:271
134491420,4ptp4l0-21swapper/119:19:041
134491420,4ptp4l0-21swapper/023:05:120
134491420,4ptp4l0-21swapper/022:11:040
134491420,4ptp4l0-21swapper/021:36:070
134491420,4ptp4l0-21swapper/019:15:190
134491420,4ptp4l0-21swapper/000:31:520
134491420,3ptp4l914-21apt-get21:50:161
134491420,3ptp4l7552-21ls00:20:262
134491420,3ptp4l28153-21ls23:55:261
134491420,3ptp4l25784-21python23:50:250
134491420,3ptp4l22953-21ls20:15:280
134491420,3ptp4l0-21swapper/220:05:232
134491420,3ptp4l0-21swapper/021:42:360
134491420,10ptp4l0-21swapper/023:03:070
23357994124,4cyclictest9-21ksoftirqd/021:25:180
134491410,5ptp4l0-21swapper/322:35:213
134491410,5ptp4l0-21swapper/300:16:033
134491410,5ptp4l0-21swapper/223:20:122
134491410,5ptp4l0-21swapper/119:22:221
134491410,5ptp4l0-21swapper/100:25:231
134491410,5ptp4l0-21swapper/100:09:261
134491410,5ptp4l0-21swapper/023:15:130
134491410,4ptp4l20413-21iostat23:40:211
134491410,4ptp4l16288-21ntp_states23:30:223
134491410,4ptp4l10805-21/usr/sbin/munin19:50:241
134491410,4ptp4l0-21swapper/323:51:383
134491410,4ptp4l0-21swapper/322:30:253
134491410,4ptp4l0-21swapper/322:06:373
134491410,4ptp4l0-21swapper/221:48:422
134491410,4ptp4l0-21swapper/221:13:562
134491410,4ptp4l0-21swapper/221:05:272
134491410,4ptp4l0-21swapper/220:35:162
134491410,4ptp4l0-21swapper/200:17:342
134491410,4ptp4l0-21swapper/122:38:561
134491410,4ptp4l0-21swapper/121:55:101
134491410,4ptp4l0-21swapper/121:15:221
134491410,4ptp4l0-21swapper/119:25:521
134491410,4ptp4l0-21swapper/100:35:241
134491410,4ptp4l0-21swapper/023:35:540
134491410,4ptp4l0-21swapper/022:40:420
134491410,4ptp4l0-21swapper/021:14:240
134491410,4ptp4l0-21swapper/020:08:230
134491410,4ptp4l0-21swapper/019:47:160
134491410,4ptp4l0-21swapper/000:20:330
134491410,3ptp4l3549-21diskstats23:05:162
134491410,3ptp4l1746-21diskstats00:10:110
134491410,3ptp4l0-21swapper/022:28:000
134491410,3ptp4l0-21swapper/020:39:040
134491400,5ptp4l0-21swapper/319:05:183
134491400,5ptp4l0-21swapper/221:25:232
134491400,5ptp4l0-21swapper/123:05:191
134491400,4ptp4l32165-21head19:25:282
134491400,4ptp4l25238-21ntpq21:30:271
134491400,4ptp4l19729-21irqrtprio20:10:182
134491400,4ptp4l12914-21iostat21:05:201
134491400,4ptp4l0-21swapper/322:57:093
134491400,4ptp4l0-21swapper/322:15:133
134491400,4ptp4l0-21swapper/321:05:233
134491400,4ptp4l0-21swapper/320:20:143
134491400,4ptp4l0-21swapper/319:35:093
134491400,4ptp4l0-21swapper/300:30:283
134491400,4ptp4l0-21swapper/300:25:133
134491400,4ptp4l0-21swapper/223:25:442
134491400,4ptp4l0-21swapper/222:29:062
134491400,4ptp4l0-21swapper/221:58:362
134491400,4ptp4l0-21swapper/221:19:302
134491400,4ptp4l0-21swapper/220:46:312
134491400,4ptp4l0-21swapper/219:48:332
134491400,4ptp4l0-21swapper/219:44:592
134491400,4ptp4l0-21swapper/200:09:452
134491400,4ptp4l0-21swapper/122:12:461
134491400,4ptp4l0-21swapper/121:00:201
134491400,4ptp4l0-21swapper/120:03:091
134491400,4ptp4l0-21swapper/119:59:101
134491400,4ptp4l0-21swapper/022:45:040
134491400,4ptp4l0-21swapper/022:31:040
134491400,4ptp4l0-21swapper/022:07:290
134491400,4ptp4l0-21swapper/020:40:420
134491400,4ptp4l0-21swapper/019:51:440
134491400,4ptp4l0-21swapper/019:14:260
134491400,4ptp4l0-21swapper/000:38:110
134491400,3ptp4l0-21swapper/122:29:531
134491400,3ptp4l0-21swapper/000:05:090
2336099390,12cyclictest7243-21taskset23:10:463
134491390,5ptp4l2335899cyclictest23:51:591
134491390,5ptp4l0-21swapper/123:26:471
134491390,5ptp4l0-21swapper/122:45:131
134491390,4ptp4l19640-21apache223:10:521
134491390,4ptp4l0-21swapper/321:38:493
134491390,4ptp4l0-21swapper/320:50:333
134491390,4ptp4l0-21swapper/300:10:213
134491390,4ptp4l0-21swapper/223:49:292
134491390,4ptp4l0-21swapper/123:47:191
134491390,4ptp4l0-21swapper/122:00:301
134491390,4ptp4l0-21swapper/121:20:221
134491390,4ptp4l0-21swapper/120:35:231
134491390,4ptp4l0-21swapper/119:40:281
134491390,4ptp4l0-21swapper/119:30:191
134491390,4ptp4l0-21swapper/100:19:171
134491390,4ptp4l0-21swapper/023:25:020
134491390,4ptp4l0-21swapper/022:35:100
134491390,4ptp4l0-21swapper/019:40:160
134491390,4ptp4l0-21swapper/019:36:000
134491390,4ptp4l0-21swapper/000:27:380
134491390,3ptp4l6194-21ntpq19:40:253
134491390,3ptp4l0-21swapper/023:32:240
134491380,3ptp4l0-21swapper/120:11:441
134491380,3ptp4l0-21swapper/119:35:071
23358993721,4cyclictest25-21ksoftirqd/120:05:321
23358993631,3cyclictest25-21ksoftirqd/122:50:191
134491350,4ptp4l0-21swapper/122:41:481
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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