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2026-04-24 - 09:14
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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 Apr 24, 2026 00:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1304321500,5sleep12291299cyclictest23:05:151
1448621430,6sleep12291299cyclictest19:12:081
76942810,4sleep37709-21spawn19:11:343
169112690,6sleep12291299cyclictest19:17:261
142652690,4sleep0101ktimersoftd/019:20:180
22914996420,7cyclictest41-21ksoftirqd/319:15:153
165772630,3sleep10-21swapper/123:10:281
138512620,3sleep2311rcuc/219:16:532
134491610,4ptp4l33-21ksoftirqd/219:05:262
134491590,3ptp4l0-21swapper/221:00:202
134491570,4ptp4l0-21swapper/119:06:061
134491570,3ptp4l0-21swapper/023:48:280
134491560,3ptp4l0-21swapper/200:10:262
134491550,3ptp4l0-21swapper/122:00:271
22914995422,3cyclictest41-21ksoftirqd/319:20:353
22914995420,3cyclictest41-21ksoftirqd/319:59:593
134491540,4ptp4l0-21swapper/222:46:142
134491540,3ptp4l0-21swapper/223:25:212
134491530,4ptp4l0-21swapper/322:56:563
22914995220,4cyclictest41-21ksoftirqd/320:34:203
22914995216,4cyclictest41-21ksoftirqd/323:30:073
134491520,4ptp4l0-21swapper/221:23:392
134491520,4ptp4l0-21swapper/221:23:392
134491520,4ptp4l0-21swapper/122:58:211
134491520,3ptp4l28147-21cat23:35:281
131032520,5sleep013117-21spawn19:10:450
134491510,4ptp4l0-21swapper/223:59:272
134491510,4ptp4l0-21swapper/222:00:102
134491510,4ptp4l0-21swapper/220:18:582
134491510,4ptp4l0-21swapper/220:18:582
134491510,4ptp4l0-21swapper/200:07:322
2291499503,3cyclictest0-21swapper/319:51:033
134491500,7ptp4l0-21swapper/220:25:122
134491500,4ptp4l0-21swapper/222:16:152
134491500,4ptp4l0-21swapper/220:04:052
2291499493,3cyclictest0-21swapper/319:44:533
22914994917,4cyclictest41-21ksoftirqd/323:16:153
22914994913,4cyclictest41-21ksoftirqd/320:44:023
134491490,4ptp4l0-21swapper/300:19:163
134491490,4ptp4l0-21swapper/221:59:102
134491490,3ptp4l0-21swapper/320:26:273
134491490,3ptp4l0-21swapper/220:22:112
2291499483,3cyclictest0-21swapper/300:04:123
2291499482,3cyclictest0-21swapper/323:52:143
22914994817,8cyclictest41-21ksoftirqd/319:45:213
134491480,5ptp4l0-21swapper/319:09:343
134491480,4ptp4l0-21swapper/323:40:593
134491480,4ptp4l0-21swapper/122:10:201
134491480,4ptp4l0-21swapper/019:05:250
134491480,3ptp4l0-21swapper/121:43:381
134491480,3ptp4l0-21swapper/121:06:141
134491480,3ptp4l0-21swapper/119:30:011
134491480,11ptp4l0-21swapper/223:38:282
22914994736,8cyclictest41-21ksoftirqd/321:05:283
2291499473,3cyclictest0-21swapper/320:36:533
134491470,4ptp4l0-21swapper/322:09:103
134491470,4ptp4l0-21swapper/320:53:543
134491470,4ptp4l0-21swapper/200:26:472
134491470,3ptp4l0-21swapper/122:19:321
22914994634,10cyclictest41-21ksoftirqd/319:30:273
2291499463,3cyclictest0-21swapper/321:55:353
2291499462,3cyclictest0-21swapper/322:48:473
22914994619,6cyclictest41-21ksoftirqd/322:25:243
22914994614,7cyclictest41-21ksoftirqd/323:27:503
22914994614,7cyclictest41-21ksoftirqd/323:06:563
2291499461,3cyclictest0-21swapper/321:48:173
22914994613,3cyclictest41-21ksoftirqd/321:33:093
22914994612,7cyclictest41-21ksoftirqd/322:39:363
134491460,3ptp4l0-21swapper/200:24:552
134491460,3ptp4l0-21swapper/119:53:361
134491460,11ptp4l16709-21grep19:18:500
2291499457,10cyclictest41-21ksoftirqd/321:11:463
22914994525,9cyclictest41-21ksoftirqd/321:25:293
22914994516,3cyclictest41-21ksoftirqd/321:50:243
22914994516,3cyclictest41-21ksoftirqd/321:50:243
22914994514,4cyclictest41-21ksoftirqd/320:56:403
22914994513,4cyclictest41-21ksoftirqd/320:46:453
22914994513,4cyclictest41-21ksoftirqd/320:13:033
22914994510,4cyclictest41-21ksoftirqd/321:44:303
2291399451,2cyclictest0-21swapper/222:40:192
134491450,9ptp4l0-21swapper/219:35:542
134491450,5ptp4l0-21swapper/221:25:282
134491450,4ptp4l0-21swapper/121:48:381
134491450,4ptp4l0-21swapper/121:18:381
134491450,3ptp4l0-21swapper/123:20:121
134491450,3ptp4l0-21swapper/121:30:141
134491450,3ptp4l0-21swapper/100:32:431
134491450,10ptp4l0-21swapper/021:58:140
134491450,10ptp4l0-21swapper/021:25:140
46198440,4rtkit-daemon0-21swapper/221:36:482
2291499445,7cyclictest41-21ksoftirqd/321:01:263
22914994432,10cyclictest41-21ksoftirqd/323:35:273
22914994413,3cyclictest41-21ksoftirqd/320:20:013
22914994413,3cyclictest41-21ksoftirqd/320:20:013
22911994422,20cyclictest9-21ksoftirqd/022:45:120
134491440,9ptp4l0-21swapper/221:11:162
134491440,9ptp4l0-21swapper/219:50:392
134491440,9ptp4l0-21swapper/219:32:482
134491440,9ptp4l0-21swapper/200:15:202
134491440,5ptp4l16651-21apt-get19:45:110
134491440,4ptp4l0-21swapper/021:40:280
134491440,3ptp4l0-21swapper/223:34:332
22914994313,3cyclictest41-21ksoftirqd/323:04:193
22914994310,6cyclictest41-21ksoftirqd/320:20:263
2291499430,1cyclictest0-21swapper/300:05:573
2291399432,39cyclictest0-21swapper/219:28:192
134491430,9ptp4l0-21swapper/222:26:582
134491430,9ptp4l0-21swapper/100:38:011
134491430,9ptp4l0-21swapper/023:32:070
134491430,4ptp4l0-21swapper/021:00:260
134491430,3ptp4l0-21swapper/021:47:410
134491430,2ptp4l0-21swapper/122:50:141
134491430,10ptp4l0-21swapper/023:43:190
2291499424,8cyclictest41-21ksoftirqd/321:35:283
22914994237,2cyclictest41-21ksoftirqd/300:25:183
2291499421,9cyclictest41-21ksoftirqd/323:59:093
22914994210,9cyclictest41-21ksoftirqd/321:20:253
22914994210,9cyclictest41-21ksoftirqd/321:20:253
2291499420,2cyclictest121rcu_preempt20:06:443
134491420,9ptp4l0-21swapper/223:20:342
134491420,9ptp4l0-21swapper/000:01:070
134491420,5ptp4l18432-21/usr/sbin/munin20:55:260
134491420,5ptp4l0-21swapper/019:25:150
134491420,4ptp4l552-21ls23:45:261
134491420,4ptp4l20632-21apt-get00:30:133
134491420,4ptp4l18827-21ls23:15:261
134491420,4ptp4l16209-21ls20:50:261
134491420,4ptp4l15658-21meminfo20:50:190
134491420,4ptp4l11277-21irqstats23:00:172
134491420,4ptp4l0-21swapper/323:14:583
134491420,4ptp4l0-21swapper/200:39:572
134491420,3ptp4l17612-21hddtemp_smartct22:05:150
134491420,3ptp4l1305-21apt-get23:50:131
134491420,3ptp4l0-21swapper/000:10:010
2291499411,8cyclictest41-21ksoftirqd/322:04:573
2291499410,2cyclictest121rcu_preempt00:10:583
22913994136,3cyclictest33-21ksoftirqd/219:10:582
2291399410,39cyclictest28942-21kworker/2:222:10:282
134491410,8ptp4l0-21swapper/222:22:542
134491410,6ptp4l8101-21/usr/sbin/munin20:35:140
134491410,5ptp4l1698-21/usr/sbin/munin20:20:201
134491410,5ptp4l0-21swapper/022:25:140
134491410,5ptp4l0-21swapper/020:00:140
134491410,5ptp4l0-21swapper/019:55:040
134491410,5ptp4l0-21swapper/000:35:170
134491410,4ptp4l9619-21ntp_states00:05:221
134491410,4ptp4l5503-21apt-get20:30:110
134491410,4ptp4l30418-21grep23:40:272
134491410,4ptp4l29754-21ntp_states20:10:231
134491410,4ptp4l28743-21apt-get22:30:122
134491410,4ptp4l28273-21users23:35:280
134491410,4ptp4l24139-21diskstats20:00:141
134491410,4ptp4l22049-21hddtemp_smartct21:05:160
134491410,4ptp4l18769-21hddtemp_smartct00:25:161
134491410,4ptp4l17007-21apt-get20:55:112
134491410,4ptp4l16402-21iostat_ios00:20:190
134491410,4ptp4l12775-21df21:55:161
134491410,4ptp4l1241-21df_inode22:40:150
134491410,4ptp4l12037-21apt-get19:35:121
134491410,4ptp4l10687-21iostat_ios20:40:181
134491410,4ptp4l0-21swapper/223:45:192
134491410,4ptp4l0-21swapper/220:45:202
134491410,4ptp4l0-21swapper/122:41:591
134491410,4ptp4l0-21swapper/119:20:501
134491410,4ptp4l0-21swapper/023:10:070
134491410,4ptp4l0-21swapper/023:04:570
134491410,4ptp4l0-21swapper/022:18:440
134491410,4ptp4l0-21swapper/020:45:280
2291499408,7cyclictest41-21ksoftirqd/322:30:263
22914994035,3cyclictest41-21ksoftirqd/322:40:283
22914994035,3cyclictest41-21ksoftirqd/321:20:003
22914994035,3cyclictest41-21ksoftirqd/319:25:203
22914994034,3cyclictest41-21ksoftirqd/322:50:243
22914994013,3cyclictest41-21ksoftirqd/300:39:513
134491400,8ptp4l0-21swapper/219:42:282
134491400,5ptp4l8171-21runrttasks22:55:130
134491400,5ptp4l25-21ksoftirqd/123:25:241
134491400,5ptp4l0-21swapper/322:16:023
134491400,5ptp4l0-21swapper/219:56:422
134491400,5ptp4l0-21swapper/021:10:170
134491400,5ptp4l0-21swapper/019:50:280
134491400,4ptp4l7206-21ps00:00:272
134491400,4ptp4l26849-21iostat_ios21:15:190
134491400,4ptp4l21013-21apt-get19:55:031
134491400,4ptp4l1412-21iostat20:20:180
134491400,4ptp4l10057-21apt-get21:50:140
134491400,4ptp4l10057-21apt-get21:50:140
134491400,4ptp4l0-21swapper/323:45:173
134491400,4ptp4l0-21swapper/300:20:053
134491400,4ptp4l0-21swapper/221:19:122
134491400,4ptp4l0-21swapper/220:35:022
134491400,4ptp4l0-21swapper/200:32:152
134491400,4ptp4l0-21swapper/123:30:131
134491400,4ptp4l0-21swapper/121:20:201
134491400,4ptp4l0-21swapper/121:20:201
134491400,4ptp4l0-21swapper/100:20:161
134491400,4ptp4l0-21swapper/100:01:101
134491400,4ptp4l0-21swapper/023:55:590
134491400,4ptp4l0-21swapper/023:50:250
134491400,4ptp4l0-21swapper/023:07:010
134491400,4ptp4l0-21swapper/022:54:100
134491400,4ptp4l0-21swapper/022:36:000
134491400,4ptp4l0-21swapper/020:40:120
134491400,3ptp4l7939-21grep19:20:102
134491400,3ptp4l29935-21ls23:40:211
134491400,3ptp4l27243-21ntp_states20:05:220
134491400,3ptp4l24998-21irqstats22:20:200
134491400,3ptp4l24720-21iostat22:20:191
134491400,3ptp4l23508-21ls23:25:270
134491400,3ptp4l21834-21df21:05:142
134491400,3ptp4l14931-21ls00:15:260
134491400,3ptp4l13039-21df_inode23:05:142
134491400,3ptp4l12245-21df19:35:140
22914993934,3cyclictest41-21ksoftirqd/323:20:233
134491390,5ptp4l0-21swapper/322:20:303
134491390,5ptp4l0-21swapper/223:10:132
134491390,5ptp4l0-21swapper/021:20:270
134491390,5ptp4l0-21swapper/021:20:270
134491390,4ptp4l4871-21/usr/sbin/munin23:55:251
134491390,4ptp4l28834-21cstates20:10:140
134491390,4ptp4l1301-21snmpd21:30:120
134491390,4ptp4l0-21swapper/322:12:343
134491390,4ptp4l0-21swapper/223:50:242
134491390,4ptp4l0-21swapper/223:19:272
134491390,4ptp4l0-21swapper/222:59:172
134491390,4ptp4l0-21swapper/222:51:242
134491390,4ptp4l0-21swapper/222:35:122
134491390,4ptp4l0-21swapper/221:49:222
134491390,4ptp4l0-21swapper/220:32:072
134491390,4ptp4l0-21swapper/220:11:162
134491390,4ptp4l0-21swapper/220:07:032
134491390,4ptp4l0-21swapper/122:30:471
134491390,4ptp4l0-21swapper/122:28:361
134491390,4ptp4l0-21swapper/122:08:501
134491390,4ptp4l0-21swapper/121:37:541
134491390,4ptp4l0-21swapper/120:45:141
134491390,4ptp4l0-21swapper/120:32:011
134491390,4ptp4l0-21swapper/120:25:271
134491390,4ptp4l0-21swapper/120:08:231
134491390,4ptp4l0-21swapper/022:30:340
134491390,4ptp4l0-21swapper/022:11:380
134491390,4ptp4l0-21swapper/020:25:150
134491390,4ptp4l0-21swapper/020:15:170
134491390,4ptp4l0-21swapper/020:15:170
134491390,4ptp4l0-21swapper/019:40:140
134491390,4ptp4l0-21swapper/000:32:280
134491390,4ptp4l0-21swapper/000:10:170
134491390,3ptp4l1913-21ntp_states21:30:242
134491390,3ptp4l18644-21df_inode00:25:150
134491390,3ptp4l17629-21df_inode23:15:130
134491390,3ptp4l17598-21meminfo19:45:191
134491390,3ptp4l0-21swapper/019:30:180
22914993833,3cyclictest41-21ksoftirqd/319:37:073
134491380,5ptp4l2291299cyclictest00:10:111
134491380,5ptp4l0-21swapper/022:00:110
134491380,4ptp4l19609-21sed21:00:141
134491380,4ptp4l0-21swapper/222:06:582
134491380,4ptp4l0-21swapper/221:40:222
134491380,4ptp4l0-21swapper/220:54:422
134491380,4ptp4l0-21swapper/220:43:412
134491380,4ptp4l0-21swapper/219:47:002
134491380,4ptp4l0-21swapper/122:35:151
134491380,4ptp4l0-21swapper/121:25:201
134491380,4ptp4l0-21swapper/120:35:231
134491380,4ptp4l0-21swapper/120:18:471
134491380,4ptp4l0-21swapper/120:18:471
134491380,4ptp4l0-21swapper/100:15:061
134491380,4ptp4l0-21swapper/021:38:090
134491380,3ptp4l10456-21/usr/sbin/munin21:50:181
134491380,3ptp4l10456-21/usr/sbin/munin21:50:181
134491380,3ptp4l0-21swapper/221:51:182
134491380,3ptp4l0-21swapper/221:51:182
134491380,3ptp4l0-21swapper/122:47:101
134491380,3ptp4l0-21swapper/121:10:261
134491380,2ptp4l20037-21tune2fs23:20:130
134491380,12ptp4l0-21swapper/119:40:201
22912993732,3cyclictest25-21ksoftirqd/119:30:151
134491370,4ptp4l0-21swapper/320:01:103
134491370,3ptp4l0-21swapper/123:00:241
134491370,2ptp4l17215-21df20:55:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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