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2026-08-07 - 08:36
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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 792 highest latencies:
System rackdslot1.osadl.org (updated Fri Aug 07, 2026 00:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491680,5ptp4l0-21swapper/019:05:210
18952670,4sleep20-21swapper/220:00:262
134491670,4ptp4l0-21swapper/223:40:122
99072640,3sleep30-21swapper/320:20:003
9898996312,9cyclictest27172-21seq23:13:121
134491630,3ptp4l0-21swapper/221:40:042
989899619,11cyclictest28064-21chrt20:57:491
989899619,11cyclictest15703-21chrt23:56:501
989899609,11cyclictest3942-21chrt23:31:221
989899609,10cyclictest30501-21chrt21:04:231
9898996012,10cyclictest27671-21seq00:24:461
9898996010,11cyclictest32649-21chrt21:07:281
989799609,6cyclictest0-21swapper/019:50:190
105582600,6sleep2989999cyclictest20:20:152
9898995912,11cyclictest11236-21seq23:48:221
9898995910,15cyclictest4923-21chrt21:17:071
134491590,4ptp4l0-21swapper/319:35:133
134491590,15ptp4l19660-21apt-get21:50:122
989899585,12cyclictest5722-21taskset22:27:061
9898995812,12cyclictest16843-21seq21:41:421
9898995812,11cyclictest25306-21seq00:19:111
9898995812,10cyclictest21062-21seq20:41:321
9898995812,10cyclictest18700-21seq19:27:381
9898995811,15cyclictest23650-21chrt21:55:381
9898995811,11cyclictest23376-21seq20:46:451
9898995810,11cyclictest29636-21chrt00:25:341
134491580,3ptp4l17808-21kworker/2:223:45:152
134491580,3ptp4l0-21swapper/221:45:162
9898995713,16cyclictest30105-21seq19:51:341
9898995713,11cyclictest9683-21seq20:18:221
9898995712,11cyclictest14225-21seq19:19:281
9898995712,11cyclictest14225-21seq19:19:281
9898995710,10cyclictest7202-21runrttasks21:21:401
134491570,4ptp4l0-21swapper/319:29:593
989899569,11cyclictest12153-21taskset21:33:211
989899568,11cyclictest10074-21seq20:20:101
989899567,12cyclictest25358-21ntpq22:00:221
989899567,12cyclictest24679-21seq23:05:461
9898995612,15cyclictest29380-21chrt23:17:061
9898995612,12cyclictest3109-21seq22:21:291
9898995612,10cyclictest2102-21seq00:38:451
9898995611,13cyclictest7355-21seq20:13:001
9898995611,11cyclictest8168-21seq22:33:561
9898995610,12cyclictest31750-21chrt23:22:441
9898995610,12cyclictest13344-21seq23:51:041
989799569,7cyclictest0-21swapper/021:40:140
134491560,4ptp4l0-21swapper/319:23:093
134491560,4ptp4l0-21swapper/221:15:342
134491560,4ptp4l0-21swapper/220:58:112
100692560,4sleep00-21swapper/022:35:250
989899559,11cyclictest25661-21taskset20:51:361
9898995512,11cyclictest17756-21seq22:53:191
9898995511,11cyclictest11028-21chrt22:40:121
9898995510,10cyclictest28470-21taskset22:08:121
9898995510,10cyclictest28470-21taskset22:08:121
989799556,10cyclictest1317-21runrttasks20:38:590
989799554,11cyclictest0-21swapper/023:20:230
134491550,4ptp4l0-21swapper/321:08:403
134491550,4ptp4l0-21swapper/320:13:023
134491550,4ptp4l0-21swapper/222:24:282
134491550,4ptp4l0-21swapper/220:17:442
134491550,4ptp4l0-21swapper/220:08:082
134491550,4ptp4l0-21swapper/219:30:142
134491550,4ptp4l0-21swapper/219:13:282
134491550,4ptp4l0-21swapper/200:20:062
989899549,11cyclictest32151-21chrt00:33:211
989899547,9cyclictest0-21swapper/123:40:361
989899546,14cyclictest10814-21latency19:10:181
9898995412,16cyclictest32555-21seq19:55:471
9898995412,15cyclictest20434-21seq23:00:051
9898995411,17cyclictest9795-21chrt21:27:351
9898995411,11cyclictest22744-21seq00:10:531
989799547,10cyclictest1317-21runrttasks22:11:190
134491540,5ptp4l0-21swapper/023:47:480
134491540,4ptp4l0-21swapper/322:33:373
134491540,4ptp4l0-21swapper/219:43:462
134491540,3ptp4l0-21swapper/220:10:272
9898995312,11cyclictest18712-21seq20:36:061
9898995312,10cyclictest19229-21chrt21:47:451
9898995311,17cyclictest30732-21seq22:12:461
9898995310,16cyclictest20524-21chrt00:06:531
9898995310,11cyclictest20170-21taskset22:59:501
9898995310,10cyclictest5194-21chrt20:09:441
989799538,10cyclictest1317-21runrttasks20:12:110
989799537,11cyclictest1317-21runrttasks22:31:200
989799537,10cyclictest23600-21seq20:49:350
989799535,11cyclictest0-21swapper/022:40:500
989799534,17cyclictest0-21swapper/019:36:340
989799533,12cyclictest26448-21/usr/sbin/munin23:10:230
134491530,4ptp4l0-21swapper/223:17:162
134491530,4ptp4l0-21swapper/222:28:522
134491530,4ptp4l0-21swapper/222:12:152
134491530,3ptp4l0-21swapper/323:40:443
134491530,3ptp4l0-21swapper/223:58:472
134491530,3ptp4l0-21swapper/221:31:112
134491530,3ptp4l0-21swapper/221:21:432
989899529,11cyclictest16513-21seq19:24:051
9898995211,17cyclictest15035-21seq22:45:411
9898995211,10cyclictest6391-21taskset23:38:121
9898995210,10cyclictest16429-21chrt20:31:191
989799528,15cyclictest1317-21runrttasks21:13:100
989799527,12cyclictest1317-21runrttasks21:16:220
989799526,10cyclictest1317-21runrttasks00:24:530
134491520,4ptp4l0-21swapper/322:26:543
134491520,4ptp4l0-21swapper/300:27:223
134491520,4ptp4l0-21swapper/222:37:092
134491520,4ptp4l0-21swapper/219:52:072
134491520,4ptp4l0-21swapper/200:35:502
134491520,3ptp4l0-21swapper/300:11:043
134491520,3ptp4l0-21swapper/223:26:552
134491520,3ptp4l0-21swapper/222:15:412
134491520,3ptp4l0-21swapper/221:35:062
134491520,3ptp4l0-21swapper/200:15:572
9898995111,9cyclictest10683-21chrt22:38:551
9898995111,16cyclictest21664-21chrt21:54:351
9898995111,10cyclictest18182-21taskset00:03:461
9898995110,12cyclictest2689-21chrt20:02:461
9898995110,11cyclictest25566-21taskset19:42:091
989799519,8cyclictest0-21swapper/021:20:180
989799518,14cyclictest22132-21/usr/sbin/munin00:10:230
989799518,11cyclictest1317-21runrttasks22:01:190
989799513,10cyclictest0-21swapper/021:31:430
134491510,5ptp4l27026-21missed_timers19:45:210
134491510,4ptp4l0-21swapper/322:49:023
134491510,4ptp4l0-21swapper/223:01:502
989899509,11cyclictest639-21taskset21:10:051
9898995011,15cyclictest1514-21chrt23:26:091
9898995010,11cyclictest23302-21chrt19:37:461
196582500,7sleep0989799cyclictest21:50:120
134491500,4ptp4l0-21swapper/323:04:463
134491500,4ptp4l0-21swapper/300:07:233
134491500,4ptp4l0-21swapper/222:44:212
134491500,4ptp4l0-21swapper/219:15:542
134491500,4ptp4l0-21swapper/219:15:542
134491500,3ptp4l0-21swapper/222:52:362
989899499,10cyclictest20939-21seq19:31:591
989799499,8cyclictest4485-21iostat_ios22:25:200
989799498,11cyclictest1317-21runrttasks22:22:090
989799496,7cyclictest29617-21users00:25:300
989799493,11cyclictest16338-21grep00:00:140
989799493,11cyclictest0-21swapper/023:04:180
989799493,10cyclictest0-21swapper/022:51:250
134491490,4ptp4l0-21swapper/222:31:342
134491490,4ptp4l0-21swapper/221:00:342
134491490,4ptp4l0-21swapper/220:54:332
134491490,3ptp4l0-21swapper/223:34:162
134491490,3ptp4l0-21swapper/222:01:472
989799488,15cyclictest0-21swapper/000:30:290
989799487,4cyclictest0-21swapper/019:10:230
989799487,14cyclictest27307-21ntp_states20:55:220
989799487,11cyclictest1317-21runrttasks20:40:470
989799485,11cyclictest0-21swapper/022:18:350
989799485,11cyclictest0-21swapper/019:24:390
989799484,13cyclictest24445-21ntp_states00:15:250
989799484,12cyclictest18770-21sed00:05:140
989799483,10cyclictest0-21swapper/020:17:420
134491480,5ptp4l0-21swapper/219:08:292
134491480,4ptp4l990099cyclictest21:17:343
134491480,4ptp4l0-21swapper/320:58:563
134491480,4ptp4l0-21swapper/221:06:172
134491480,3ptp4l990099cyclictest21:14:343
134491480,3ptp4l0-21swapper/223:12:052
989899479,16cyclictest28041-21chrt19:49:251
989799475,14cyclictest1934-21phc2sys20:00:260
989799474,11cyclictest0-21swapper/023:43:020
989799474,11cyclictest0-21swapper/021:02:080
989799470,18cyclictest0-21swapper/023:33:470
134491470,4ptp4l0-21swapper/320:23:033
134491470,4ptp4l0-21swapper/219:21:592
134491470,3ptp4l990099cyclictest22:19:423
134491470,3ptp4l990099cyclictest00:37:253
989799467,7cyclictest0-21swapper/019:25:540
989799466,9cyclictest0-21swapper/023:27:010
989799465,16cyclictest14678-21apt20:30:110
989799464,7cyclictest27414-21irqstats22:05:190
989799464,7cyclictest27414-21irqstats22:05:180
989799463,12cyclictest0-21swapper/021:08:090
134491460,4ptp4l0-21swapper/222:58:282
134491460,4ptp4l0-21swapper/219:49:512
134491460,3ptp4l990099cyclictest20:47:343
134491460,3ptp4l990099cyclictest20:09:283
134491460,3ptp4l0-21swapper/223:37:192
134491460,3ptp4l0-21swapper/223:20:542
134491460,3ptp4l0-21swapper/221:10:542
134491450,9ptp4l0-21swapper/223:05:112
134491450,4ptp4l990099cyclictest00:31:383
134491450,4ptp4l0-21swapper/220:37:232
134491450,3ptp4l0-21swapper/300:21:203
134491450,3ptp4l0-21swapper/220:47:402
134491450,10ptp4l0-21swapper/120:28:371
989899442,7cyclictest134491ptp4l22:16:471
989799446,5cyclictest0-21swapper/020:06:550
989799445,7cyclictest5054-21iostat_ios23:35:180
989799444,9cyclictest0-21swapper/023:09:120
989799444,12cyclictest0-21swapper/019:34:330
134491440,9ptp4l0-21swapper/019:55:520
134491440,5ptp4l27570-21apt-get23:15:153
134491440,5ptp4l0-21swapper/119:09:521
134491440,4ptp4l0-21swapper/321:43:353
134491440,4ptp4l0-21swapper/320:42:063
134491440,3ptp4l990099cyclictest23:11:403
134491430,4ptp4l990099cyclictest23:30:043
134491430,4ptp4l0-21swapper/322:23:123
134491430,4ptp4l0-21swapper/219:27:022
134491430,4ptp4l0-21swapper/200:28:312
134491430,3ptp4l990099cyclictest21:57:303
134491430,3ptp4l0-21swapper/221:56:492
989799427,7cyclictest0-21swapper/023:55:270
989799423,10cyclictest0-21swapper/019:16:520
989799423,10cyclictest0-21swapper/019:16:520
989799420,18cyclictest0-21swapper/022:45:400
134491420,5ptp4l0-21swapper/321:45:143
134491420,5ptp4l0-21swapper/321:30:133
134491420,5ptp4l0-21swapper/320:30:263
134491420,5ptp4l0-21swapper/220:40:252
134491420,4ptp4l30848-21apt-get19:55:132
134491420,4ptp4l0-21swapper/020:25:200
134491420,3ptp4l18533-21apt-get00:05:122
989799414,11cyclictest0-21swapper/023:52:080
989799413,9cyclictest0-21swapper/021:25:330
134491410,9ptp4l0-21swapper/322:54:433
134491410,5ptp4l0-21swapper/321:25:133
134491410,5ptp4l0-21swapper/320:50:243
134491410,5ptp4l0-21swapper/023:15:140
134491410,4ptp4l5986-21ls23:35:263
134491410,4ptp4l26045-21apt-get19:45:113
134491410,4ptp4l22379-21meminfo19:35:202
134491410,4ptp4l22259-21df_inode21:55:140
134491410,4ptp4l21869-21irqstats00:10:182
134491410,4ptp4l1714-21meminfo20:00:223
134491410,4ptp4l0-21swapper/323:50:233
134491410,4ptp4l0-21swapper/319:31:393
134491410,4ptp4l0-21swapper/300:00:123
134491410,4ptp4l0-21swapper/220:27:462
134491410,4ptp4l0-21swapper/021:37:580
134491410,4ptp4l0-21swapper/019:40:290
134491410,3ptp4l23327-21apt-get00:15:143
134491410,3ptp4l14356-21ls22:45:232
134491400,5ptp4l0-21swapper/323:45:213
134491400,5ptp4l0-21swapper/322:57:243
134491400,5ptp4l0-21swapper/322:35:043
134491400,4ptp4l16661-21hddtemp_smartct00:00:172
134491400,4ptp4l12723-21apt-get21:35:043
134491400,4ptp4l0-21swapper/323:55:243
134491400,4ptp4l0-21swapper/322:10:113
134491400,4ptp4l0-21swapper/321:20:243
134491400,4ptp4l0-21swapper/320:38:503
134491400,4ptp4l0-21swapper/319:55:153
134491400,4ptp4l0-21swapper/319:40:153
134491400,4ptp4l0-21swapper/223:50:102
134491400,4ptp4l0-21swapper/221:27:342
134491400,4ptp4l0-21swapper/020:25:000
9900993934,3cyclictest41-21ksoftirqd/323:05:113
9899993934,3cyclictest33-21ksoftirqd/200:32:252
134491390,5ptp4l0-21swapper/323:25:163
134491390,5ptp4l0-21swapper/319:08:413
134491390,5ptp4l0-21swapper/021:45:260
134491390,4ptp4l0-21swapper/323:20:043
134491390,4ptp4l0-21swapper/322:05:213
134491390,4ptp4l0-21swapper/322:05:213
134491390,4ptp4l0-21swapper/321:50:043
134491390,4ptp4l0-21swapper/321:00:263
134491390,4ptp4l0-21swapper/320:25:263
134491390,4ptp4l0-21swapper/319:15:293
134491390,4ptp4l0-21swapper/319:15:293
134491390,4ptp4l0-21swapper/222:06:182
134491390,4ptp4l0-21swapper/222:06:172
134491390,4ptp4l0-21swapper/121:38:301
134491390,4ptp4l0-21swapper/022:58:240
134491390,4ptp4l0-21swapper/020:51:350
134491390,4ptp4l0-21swapper/000:36:390
134491390,3ptp4l30486-21apt-config19:55:003
134491390,3ptp4l1301-21snmpd22:00:163
134491390,3ptp4l11044-21apt-get22:40:153
134491390,2ptp4l15799-21ntp_states20:30:232
134491380,4ptp4l0-21swapper/319:10:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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