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2026-01-08 - 14:27
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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 Thu Jan 08, 2026 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1846621680,6sleep03012199cyclictest19:39:170
378821590,5sleep23012399cyclictest19:21:202
502321550,6sleep13012299cyclictest19:53:051
116662990,3sleep111662-21grep19:57:471
116662990,3sleep111662-21grep19:57:471
139552890,1sleep313957-21multi.sh19:56:203
139552890,1sleep313957-21multi.sh19:56:203
185012800,3sleep218500-21execl19:39:312
40242690,12sleep14050-21sh20:00:341
40242690,12sleep14050-21sh20:00:341
121702690,5sleep112180-21sh19:19:481
32952680,5sleep13296-21sh19:21:571
3012299680,28cyclictest25587-21chrt00:39:571
28672680,4sleep20-21swapper/221:30:192
3012299651,60cyclictest17443-21users22:00:291
212202640,6sleep321219-21wc19:22:153
118752640,5sleep30-21swapper/320:40:173
3012299630,27cyclictest31910-21taskset19:10:531
3012299630,23cyclictest3705-21ntpq23:50:221
134491630,3ptp4l0-21swapper/020:15:130
3012299621,57cyclictest32176-21df22:35:131
184742620,2sleep30-21swapper/319:39:243
134491620,3ptp4l0-21swapper/019:16:250
134491620,20ptp4l0-21swapper/220:02:382
134491620,20ptp4l0-21swapper/220:02:382
311452610,4sleep231122-21sh19:59:052
311452610,4sleep231122-21sh19:59:052
134491610,3ptp4l0-21swapper/320:00:463
134491610,3ptp4l0-21swapper/320:00:463
134491600,4ptp4l0-21swapper/022:15:260
3012299592,53cyclictest18499-21execl19:39:441
3012299590,28cyclictest13756-21chrt00:11:081
288472590,5sleep028814-21sh19:58:030
288472590,5sleep028814-21sh19:58:030
197732590,4sleep30-21swapper/319:18:133
134491590,4ptp4l17624-21ls23:10:283
134491590,4ptp4l15526-21apt-get20:50:113
134491590,4ptp4l0-21swapper/019:05:310
134491590,4ptp4l0-21swapper/019:05:300
134491590,20ptp4l9-21ksoftirqd/020:05:270
134491590,17ptp4l24039-21spawn19:13:570
134491590,13ptp4l0-21swapper/319:07:443
134491590,13ptp4l0-21swapper/319:07:443
3012299580,29cyclictest15831-21taskset23:08:321
134491580,3ptp4l18457-21spawn19:52:360
134491580,26ptp4l25-21ksoftirqd/120:51:251
3012299570,29cyclictest26810-21seq22:21:161
134491570,4ptp4l0-21swapper/222:45:312
134491570,4ptp4l0-21swapper/100:20:261
3012299561,29cyclictest8410-21seq21:42:441
3012299561,25cyclictest31245-21chrt20:15:001
3012299560,29cyclictest31496-21seq22:32:151
3012299560,28cyclictest29247-21chrt22:28:031
134491560,3ptp4l1192-21missed_timers23:45:200
134491550,4ptp4l0-21swapper/000:35:050
3012299541,21cyclictest134491ptp4l23:25:181
3012299540,51cyclictest11450-21diskstats21:50:131
3012299540,2cyclictest7559-21/usr/sbin/munin00:00:171
3012299540,29cyclictest31375-21seq21:20:461
3012299540,28cyclictest12948-21chrt20:44:401
295022540,2sleep2311rcuc/219:19:312
134491540,4ptp4l0-21swapper/300:36:323
134491540,3ptp4l0-21swapper/323:01:363
134491540,11ptp4l29445-21fstime19:06:541
134491540,11ptp4l29445-21fstime19:06:541
3012299530,29cyclictest24467-21seq22:16:021
134491530,4ptp4l0-21swapper/323:06:383
134491530,3ptp4l0-21swapper/223:21:362
134491530,3ptp4l0-21swapper/200:09:552
134491530,3ptp4l0-21swapper/020:37:220
134491530,2ptp4l13575-21whetstone-doubl19:31:213
3012299520,3cyclictest18953-21sed20:55:191
3012299520,27cyclictest19925-21chrt22:07:331
134491520,4ptp4l0-21swapper/321:00:593
134491520,4ptp4l0-21swapper/023:52:290
134491520,4ptp4l0-21swapper/021:15:240
134491520,4ptp4l0-21swapper/019:46:190
30122995111,38cyclictest21142-21kworker/1:120:36:491
3012299510,21cyclictest137891phc2sys00:05:151
134491510,9ptp4l29516-21fstime19:07:542
134491510,9ptp4l29516-21fstime19:07:532
134491510,4ptp4l0-21swapper/323:42:373
134491510,4ptp4l0-21swapper/019:27:270
134491510,3ptp4l11772-21irqstats20:40:170
3012299501,24cyclictest29695-21runrttasks23:35:371
134491500,4ptp4l0-21swapper/323:34:433
134491500,4ptp4l0-21swapper/323:24:313
134491500,4ptp4l0-21swapper/019:41:580
134491500,3ptp4l0-21swapper/223:37:152
134491490,4ptp4l0-21swapper/300:20:113
134491490,3ptp4l0-21swapper/322:46:523
134491490,3ptp4l0-21swapper/320:30:213
134491490,14ptp4l23697-21rm19:21:440
3012299484,19cyclictest134491ptp4l20:28:271
134491480,4ptp4l0-21swapper/322:16:313
134491480,4ptp4l0-21swapper/022:49:310
134491480,3ptp4l0-21swapper/322:29:553
134491480,3ptp4l0-21swapper/321:47:253
134491480,3ptp4l0-21swapper/300:00:203
3012299471,29cyclictest23184-21seq00:33:421
3012299471,29cyclictest23184-21seq00:33:421
3012299470,29cyclictest13149-21seq23:01:231
3012299470,28cyclictest20885-21seq19:43:541
134491470,9ptp4l23802-21pipe19:50:012
134491470,4ptp4l0-21swapper/320:20:343
134491470,4ptp4l0-21swapper/320:12:253
134491470,4ptp4l0-21swapper/023:28:440
134491470,3ptp4l0-21swapper/020:01:430
134491470,3ptp4l0-21swapper/020:01:430
134491470,10ptp4l0-21swapper/200:02:572
3012399462,2cyclictest121rcu_preempt23:29:432
3012399461,2cyclictest121rcu_preempt00:36:262
3012299460,27cyclictest22272-21seq22:12:251
134491460,3ptp4l0-21swapper/322:55:153
134491460,12ptp4l20425-21sed19:40:272
3012399459,4cyclictest33-21ksoftirqd/222:24:102
3012399452,3cyclictest121rcu_preempt23:45:152
3012299452,22cyclictest0-21swapper/121:36:411
3012299450,29cyclictest9966-21ntpq22:55:201
3012299450,27cyclictest6272-21runrttasks22:49:431
134491450,5ptp4l0-21swapper/019:30:150
134491450,4ptp4l0-21swapper/322:30:233
134491450,4ptp4l0-21swapper/222:35:252
134491450,3ptp4l0-21swapper/323:35:473
134491450,3ptp4l0-21swapper/322:39:423
134491450,3ptp4l0-21swapper/321:54:103
134491450,3ptp4l0-21swapper/223:58:232
134491450,3ptp4l0-21swapper/223:31:262
134491450,3ptp4l0-21swapper/222:12:162
3012399440,2cyclictest121rcu_preempt22:53:012
3012299442,19cyclictest0-21swapper/119:33:471
3012299440,31cyclictest29251-21taskset21:18:241
3012299440,27cyclictest1553-21runrttasks21:29:211
134491440,4ptp4l0-21swapper/322:04:283
134491440,4ptp4l0-21swapper/319:47:513
134491440,4ptp4l0-21swapper/022:44:290
134491440,3ptp4l0-21swapper/022:14:000
134491440,3ptp4l0-21swapper/000:25:180
134491440,18ptp4l0-21swapper/221:26:002
30123994339,2cyclictest33-21ksoftirqd/200:20:002
30123994337,3cyclictest33-21ksoftirqd/221:41:592
3012299430,25cyclictest28933-21seq20:09:571
134691430,11getstats0-21swapper/123:44:351
134491430,9ptp4l0-21swapper/223:14:322
134491430,5ptp4l0-21swapper/022:50:190
134491430,5ptp4l0-21swapper/000:00:190
134491430,4ptp4l25024-21apt-get21:10:102
134491430,4ptp4l18939-21apt-get00:25:112
134491430,4ptp4l13225-21apt-get20:45:113
134491430,4ptp4l0-21swapper/023:07:410
134491430,3ptp4l0-21swapper/223:05:272
134491430,3ptp4l0-21swapper/221:16:442
134491430,11ptp4l0-21swapper/219:13:152
134491430,10ptp4l0-21swapper/322:21:393
134491430,10ptp4l0-21swapper/022:36:440
30124994237,3cyclictest41-21ksoftirqd/319:52:483
3012399420,3cyclictest121rcu_preempt19:47:032
3012299421,38cyclictest25332-21diskstats21:10:141
3012299421,37cyclictest19889-21meminfo00:25:191
3012299420,28cyclictest13201-21runrttasks20:45:031
134691420,10getstats0-21swapper/122:53:361
134691420,10getstats0-21swapper/122:41:591
134691420,10getstats0-21swapper/120:31:481
134491420,9ptp4l0-21swapper/022:31:500
134491420,8ptp4l0-21swapper/221:05:002
134491420,8ptp4l0-21swapper/021:14:530
134491420,5ptp4l0-21swapper/220:10:122
134491420,5ptp4l0-21swapper/119:45:161
134491420,5ptp4l0-21swapper/000:20:110
134491420,4ptp4l20367-21apt-get22:10:113
134491420,4ptp4l11948-21iostat23:00:192
134491420,4ptp4l0-21swapper/321:11:223
134491420,4ptp4l0-21swapper/223:00:002
134491420,4ptp4l0-21swapper/020:11:400
134491420,3ptp4l21239-21apt-get00:30:112
134491420,3ptp4l21239-21apt-get00:30:112
134491420,3ptp4l11711-21iostat_ios21:50:170
134491420,3ptp4l0-21swapper/321:22:503
134491420,3ptp4l0-21swapper/020:50:310
134491420,10ptp4l0-21swapper/319:12:383
3012299410,26cyclictest3488-21chrt20:21:381
3012299410,26cyclictest10564-21taskset21:45:481
3012299410,24cyclictest16010-21seq00:15:321
134491410,9ptp4l0-21swapper/200:22:022
134491410,9ptp4l0-21swapper/022:00:470
134491410,8ptp4l0-21swapper/221:23:372
134491410,5ptp4l30226-21iostat_ios21:20:170
134491410,5ptp4l0-21swapper/323:50:133
134491410,5ptp4l0-21swapper/319:44:213
134491410,5ptp4l0-21swapper/220:45:132
134491410,5ptp4l0-21swapper/021:55:260
134491410,4ptp4l5312-21hddtemp_smartct23:55:161
134491410,4ptp4l27353-21apt-get22:25:112
134491410,4ptp4l26536-21irqstats23:30:201
134491410,4ptp4l23032-21diskstats22:15:132
134491410,4ptp4l0-21swapper/020:20:130
134491410,3ptp4l31257-21apt-get20:15:023
134491410,3ptp4l16198-21apt-get23:10:130
134491410,3ptp4l13124-21ntp_states00:10:233
3012299402,24cyclictest2066-21taskset23:47:151
3012299401,36cyclictest2870-21memory21:30:201
134691400,11getstats0-21swapper/121:05:181
134491400,8ptp4l0-21swapper/323:49:333
134491400,8ptp4l0-21swapper/220:28:152
134491400,5ptp4l21671-21/usr/sbin/munin00:30:160
134491400,5ptp4l21671-21/usr/sbin/munin00:30:160
134491400,5ptp4l0-21swapper/322:05:163
134491400,4ptp4l6546-21apt-get22:50:113
134491400,4ptp4l5094-21df23:55:120
134491400,4ptp4l17149-21meminfo23:10:221
134491400,4ptp4l14623-21diskstats00:15:160
134491400,4ptp4l11810-21hddtemp_smartct23:00:170
134491400,4ptp4l11715-21apt-get19:25:131
134491400,4ptp4l0-21swapper/321:05:223
134491400,4ptp4l0-21swapper/223:51:492
134491400,4ptp4l0-21swapper/220:44:122
134491400,4ptp4l0-21swapper/220:30:192
134491400,4ptp4l0-21swapper/200:13:012
134491400,4ptp4l0-21swapper/023:30:210
134491400,4ptp4l0-21swapper/022:05:410
134491400,4ptp4l0-21swapper/021:34:260
134491400,4ptp4l0-21swapper/021:04:090
134491400,3ptp4l9411-21iostat_ios21:45:180
134491400,3ptp4l1889-21apt-get22:40:122
134491400,3ptp4l14947-21ls21:55:273
134491400,3ptp4l0-21swapper/321:17:333
134491400,2ptp4l20816-21apt-get23:20:091
134491390,8ptp4l0-21swapper/221:51:402
134491390,4ptp4l30324-21apt-get23:40:132
134491390,4ptp4l24716-21timerwakeupswit23:25:273
134491390,4ptp4l18925-21/usr/sbin/munin00:25:163
134491390,4ptp4l0-21swapper/323:15:243
134491390,4ptp4l0-21swapper/321:40:123
134491390,4ptp4l0-21swapper/321:35:123
134491390,4ptp4l0-21swapper/320:59:453
134491390,4ptp4l0-21swapper/300:18:273
134491390,4ptp4l0-21swapper/300:05:283
134491390,4ptp4l0-21swapper/222:30:262
134491390,4ptp4l0-21swapper/222:01:572
134491390,4ptp4l0-21swapper/221:48:042
134491390,4ptp4l0-21swapper/221:35:392
134491390,4ptp4l0-21swapper/221:03:432
134491390,4ptp4l0-21swapper/220:58:162
134491390,4ptp4l0-21swapper/220:50:142
134491390,4ptp4l0-21swapper/220:24:552
134491390,4ptp4l0-21swapper/220:09:252
134491390,4ptp4l0-21swapper/023:42:190
134491390,4ptp4l0-21swapper/023:37:540
134491390,4ptp4l0-21swapper/023:20:120
134491390,4ptp4l0-21swapper/022:29:030
134491390,4ptp4l0-21swapper/022:21:290
134491390,4ptp4l0-21swapper/021:25:170
134491390,4ptp4l0-21swapper/021:09:150
134491390,4ptp4l0-21swapper/020:46:300
134491390,4ptp4l0-21swapper/020:25:370
134491390,4ptp4l0-21swapper/000:06:270
134491390,3ptp4l9151-21diskstats22:55:130
134491390,3ptp4l19001-21meminfo20:55:210
30123993833,3cyclictest33-21ksoftirqd/222:09:592
134491380,4ptp4l32056-21fschecks_count20:15:141
134491380,4ptp4l0-21swapper/323:56:393
134491380,4ptp4l0-21swapper/321:33:043
134491380,4ptp4l0-21swapper/321:26:033
134491380,4ptp4l0-21swapper/320:38:523
134491380,4ptp4l0-21swapper/320:05:393
134491380,4ptp4l0-21swapper/300:30:423
134491380,4ptp4l0-21swapper/300:30:423
134491380,4ptp4l0-21swapper/223:16:242
134491380,4ptp4l0-21swapper/220:17:382
134491380,4ptp4l0-21swapper/123:18:091
134491380,4ptp4l0-21swapper/121:57:421
134491380,4ptp4l0-21swapper/023:15:180
134491380,4ptp4l0-21swapper/021:43:570
134491380,4ptp4l0-21swapper/021:35:250
134491380,4ptp4l0-21swapper/000:11:250
30123993733,3cyclictest33-21ksoftirqd/219:30:012
3012399373,2cyclictest121rcu_preempt20:35:192
134491370,4ptp4l0-21swapper/322:40:173
134491370,4ptp4l0-21swapper/319:28:533
134491370,4ptp4l0-21swapper/221:56:382
134491370,4ptp4l0-21swapper/020:30:030
134491370,3ptp4l0-21swapper/320:25:173
134491370,3ptp4l0-21swapper/121:01:461
134491360,2ptp4l13531-21whetstone-doubl19:26:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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