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2026-07-12 - 11:59
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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 Sun Jul 12, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
539621870,3sleep20-21swapper/219:05:272
250121430,6sleep3630299cyclictest23:39:593
2670021200,5sleep00-21swapper/023:20:240
6300997124,4cyclictest25-21ksoftirqd/120:18:281
6300996924,4cyclictest25-21ksoftirqd/122:33:321
6300996923,8cyclictest25-21ksoftirqd/120:20:201
134491670,20ptp4l0-21swapper/200:05:182
6300996425,4cyclictest25-21ksoftirqd/123:15:201
6300995922,4cyclictest25-21ksoftirqd/122:57:551
134491580,5ptp4l0-21swapper/021:50:200
134491570,20ptp4l0-21swapper/222:39:232
630099564,3cyclictest121rcu_preempt20:40:131
134491560,4ptp4l0-21swapper/019:31:280
134491560,3ptp4l0-21swapper/200:15:242
134491560,13ptp4l3967-21apt-get19:05:131
134491550,3ptp4l0-21swapper/022:16:550
6300995429,5cyclictest25-21ksoftirqd/123:05:281
6300995421,3cyclictest25-21ksoftirqd/120:29:331
6300995420,3cyclictest25-21ksoftirqd/122:11:471
6300995414,9cyclictest25-21ksoftirqd/119:45:131
6300995414,9cyclictest25-21ksoftirqd/119:45:131
33992540,2sleep10-21swapper/123:40:171
134491540,5ptp4l0-21swapper/120:30:141
134491540,5ptp4l0-21swapper/019:09:340
134491540,3ptp4l0-21swapper/119:32:381
134491540,3ptp4l0-21swapper/020:40:000
134491540,15ptp4l33-21ksoftirqd/219:48:192
134491540,15ptp4l33-21ksoftirqd/219:48:192
6300995318,3cyclictest25-21ksoftirqd/100:25:191
6300995316,8cyclictest25-21ksoftirqd/122:35:141
6300995315,8cyclictest25-21ksoftirqd/120:45:271
134491530,4ptp4l630299cyclictest21:54:123
134491530,4ptp4l0-21swapper/200:35:322
134491530,4ptp4l0-21swapper/121:22:131
134491530,4ptp4l0-21swapper/019:29:580
6300995218,4cyclictest25-21ksoftirqd/119:50:231
6300995217,6cyclictest25-21ksoftirqd/119:40:151
6300995213,4cyclictest25-21ksoftirqd/123:10:171
6300995211,9cyclictest25-21ksoftirqd/121:40:151
134491520,4ptp4l0-21swapper/019:42:540
134491520,3ptp4l0-21swapper/223:15:302
6301995133,16cyclictest33-21ksoftirqd/219:30:012
6300995125,6cyclictest25-21ksoftirqd/100:35:011
6300995119,9cyclictest25-21ksoftirqd/120:55:271
6300995118,4cyclictest25-21ksoftirqd/121:00:011
6300995117,3cyclictest25-21ksoftirqd/123:23:001
6300995111,9cyclictest25-21ksoftirqd/123:45:211
158162510,5sleep315819-21unixbench_singl00:05:273
134491510,5ptp4l0-21swapper/222:55:022
134491510,5ptp4l0-21swapper/023:25:580
134491510,3ptp4l0-21swapper/021:43:530
6300995021,6cyclictest25-21ksoftirqd/120:10:111
630099501,3cyclictest121rcu_preempt22:45:001
134491500,4ptp4l0-21swapper/300:20:173
134491500,4ptp4l0-21swapper/223:57:512
134491500,4ptp4l0-21swapper/222:18:402
134491500,4ptp4l0-21swapper/122:04:261
134491500,4ptp4l0-21swapper/121:34:511
134491500,4ptp4l0-21swapper/000:33:110
134491500,4ptp4l0-21swapper/000:17:400
134491500,3ptp4l0-21swapper/021:33:320
6300994920,3cyclictest25-21ksoftirqd/122:50:131
6300994920,3cyclictest25-21ksoftirqd/119:20:141
6300994914,6cyclictest25-21ksoftirqd/121:15:291
134491490,4ptp4l0-21swapper/122:45:571
134491490,4ptp4l0-21swapper/121:46:281
134491490,4ptp4l0-21swapper/121:05:031
134491490,4ptp4l0-21swapper/100:07:111
134491490,4ptp4l0-21swapper/021:59:240
134491490,4ptp4l0-21swapper/020:20:080
134491490,3ptp4l0-21swapper/221:39:422
6300994817,6cyclictest25-21ksoftirqd/100:25:011
134491480,4ptp4l0-21swapper/122:25:141
134491480,4ptp4l0-21swapper/119:17:391
134491480,4ptp4l0-21swapper/020:47:320
134491480,4ptp4l0-21swapper/019:11:160
134491480,3ptp4l0-21swapper/223:29:582
134491480,3ptp4l0-21swapper/120:08:061
6300994722,6cyclictest25-21ksoftirqd/100:10:531
6300994715,5cyclictest25-21ksoftirqd/123:55:221
630099471,3cyclictest121rcu_preempt19:25:171
134491470,9ptp4l0-21swapper/323:40:123
134491470,9ptp4l0-21swapper/323:20:523
134491470,4ptp4l0-21swapper/323:10:173
134491470,4ptp4l0-21swapper/222:07:082
134491470,4ptp4l0-21swapper/122:22:061
134491470,4ptp4l0-21swapper/022:42:010
134491470,3ptp4l0-21swapper/223:45:202
6300994636,3cyclictest25-21ksoftirqd/121:55:251
6300994621,6cyclictest25-21ksoftirqd/121:50:161
6300994612,7cyclictest25-21ksoftirqd/120:35:161
630099460,3cyclictest121rcu_preempt00:35:281
134491460,4ptp4l0-21swapper/000:38:210
134491460,3ptp4l0-21swapper/123:28:581
134491460,3ptp4l0-21swapper/020:15:200
134491460,2ptp4l0-21swapper/020:57:280
134491460,10ptp4l0-21swapper/220:35:252
630099459,6cyclictest25-21ksoftirqd/119:10:151
630099456,2cyclictest25-21ksoftirqd/122:06:461
630099452,2cyclictest25-21ksoftirqd/121:28:501
630099451,5cyclictest25-21ksoftirqd/123:30:151
630099450,3cyclictest25-21ksoftirqd/100:00:131
134491450,9ptp4l0-21swapper/000:06:560
134491450,12ptp4l0-21swapper/022:55:500
630099444,3cyclictest25-21ksoftirqd/123:54:541
630099444,3cyclictest25-21ksoftirqd/123:54:541
6300994413,7cyclictest25-21ksoftirqd/120:00:171
630099440,2cyclictest25-21ksoftirqd/123:00:221
134491440,4ptp4l18631-21apt-get23:05:143
134491440,4ptp4l0-21swapper/222:27:072
134491440,3ptp4l0-21swapper/022:13:390
134491440,3ptp4l0-21swapper/021:12:180
134491440,23ptp4l0-21swapper/223:34:492
6300994338,3cyclictest25-21ksoftirqd/119:40:001
134491430,5ptp4l0-21swapper/322:55:143
134491430,4ptp4l41-21ksoftirqd/319:10:003
134491430,4ptp4l0-21swapper/119:59:521
134491430,3ptp4l28728-21ls19:55:270
134491430,2ptp4l121rcu_preempt23:31:050
134491430,10ptp4l0-21swapper/220:43:442
630099429,7cyclictest25-21ksoftirqd/121:35:181
630099423,3cyclictest121rcu_preempt23:35:261
630099423,2cyclictest25-21ksoftirqd/122:15:371
630099422,6cyclictest25-21ksoftirqd/100:15:561
629999424,35cyclictest13341-21latency_hist20:35:010
46198420,28rtkit-daemon7335-21cut20:20:192
134491420,6ptp4l0-21swapper/019:21:080
134491420,5ptp4l0-21swapper/023:40:150
134491420,4ptp4l688-21irqstats22:25:203
134491420,4ptp4l31105-21ntp_states22:20:233
134491420,4ptp4l23222-21apt-get23:15:143
134491420,4ptp4l21155-21meminfo19:40:202
134491420,4ptp4l0-21swapper/321:55:153
134491420,3ptp4l0-21swapper/223:22:042
134491420,3ptp4l0-21swapper/221:10:002
134491420,3ptp4l0-21swapper/200:31:392
134491420,3ptp4l0-21swapper/121:14:301
134491420,3ptp4l0-21swapper/120:55:001
134491420,3ptp4l0-21swapper/000:28:090
6299994136,3cyclictest9-21ksoftirqd/019:20:000
629999413,4cyclictest22769-21kworker/0:222:09:490
6299994123,8cyclictest9-21ksoftirqd/023:05:280
134491410,6ptp4l10910-21python23:55:263
134491410,5ptp4l0-21swapper/323:25:113
134491410,5ptp4l0-21swapper/300:15:153
134491410,5ptp4l0-21swapper/223:05:142
134491410,5ptp4l0-21swapper/021:24:440
134491410,5ptp4l0-21swapper/020:05:260
134491410,5ptp4l0-21swapper/019:35:210
134491410,4ptp4l5123-21df23:45:140
134491410,4ptp4l3372-21ls20:10:240
134491410,4ptp4l33-21ksoftirqd/219:10:002
134491410,4ptp4l30742-21ntp_states20:00:252
134491410,4ptp4l2539-21diskstats22:30:132
134491410,4ptp4l16672-21apt-get00:10:132
134491410,4ptp4l12288-21iostat22:50:180
134491410,4ptp4l0-21swapper/319:35:133
134491410,4ptp4l0-21swapper/222:40:212
134491410,4ptp4l0-21swapper/023:35:120
134491410,4ptp4l0-21swapper/023:00:270
134491410,3ptp4l9568-21ls19:15:212
6301994035,3cyclictest33-21ksoftirqd/223:55:002
6301994035,3cyclictest33-21ksoftirqd/223:55:002
6299994036,2cyclictest9-21ksoftirqd/021:20:000
134491400,6ptp4l0-21swapper/022:00:370
134491400,5ptp4l29775-21apt-get21:10:123
134491400,5ptp4l26128-21ntp_states19:50:250
134491400,5ptp4l0-21swapper/322:05:163
134491400,5ptp4l0-21swapper/319:40:143
134491400,5ptp4l0-21swapper/300:30:153
134491400,5ptp4l0-21swapper/220:30:132
134491400,5ptp4l0-21swapper/022:26:290
134491400,5ptp4l0-21swapper/021:25:210
134491400,4ptp4l7531-21/usr/sbin/munin23:50:163
134491400,4ptp4l7531-21/usr/sbin/munin23:50:163
134491400,4ptp4l30558-21iostat_ios22:20:172
134491400,4ptp4l27667-21apt-get22:15:123
134491400,4ptp4l21211-21/usr/sbin/munin22:00:172
134491400,4ptp4l0-21swapper/322:45:213
134491400,4ptp4l0-21swapper/321:25:253
134491400,4ptp4l0-21swapper/300:10:123
134491400,4ptp4l0-21swapper/023:10:320
134491400,4ptp4l0-21swapper/022:39:380
134491400,4ptp4l0-21swapper/022:30:210
134491400,3ptp4l21923-21ls20:50:280
134491400,3ptp4l11722-21apt-get22:50:132
134491400,3ptp4l11150-21apt-get20:30:123
6301993934,3cyclictest33-21ksoftirqd/219:55:192
6299993911,4cyclictest9-21ksoftirqd/021:00:160
46198390,4rtkit-daemon0-21swapper/221:41:172
134491390,5ptp4l23487-21missed_timers19:45:213
134491390,5ptp4l23487-21missed_timers19:45:213
134491390,5ptp4l21035-21kworker/2:221:12:202
134491390,5ptp4l0-21swapper/322:50:043
134491390,5ptp4l0-21swapper/322:30:113
134491390,5ptp4l0-21swapper/321:04:023
134491390,5ptp4l0-21swapper/320:00:083
134491390,5ptp4l0-21swapper/223:35:142
134491390,4ptp4l22766-21sed19:45:140
134491390,4ptp4l22766-21sed19:45:140
134491390,4ptp4l13287-21sed00:00:300
134491390,4ptp4l0-21swapper/323:31:373
134491390,4ptp4l0-21swapper/323:00:213
134491390,4ptp4l0-21swapper/322:35:163
134491390,4ptp4l0-21swapper/322:14:003
134491390,4ptp4l0-21swapper/300:25:173
134491390,4ptp4l0-21swapper/222:46:282
134491390,4ptp4l0-21swapper/221:52:502
134491390,4ptp4l0-21swapper/221:30:152
134491390,4ptp4l0-21swapper/221:17:502
134491390,4ptp4l0-21swapper/220:52:102
134491390,4ptp4l0-21swapper/220:45:122
134491390,4ptp4l0-21swapper/220:29:342
134491390,4ptp4l0-21swapper/220:05:292
134491390,4ptp4l0-21swapper/200:22:582
134491390,4ptp4l0-21swapper/200:00:292
134491390,4ptp4l0-21swapper/023:58:030
134491390,4ptp4l0-21swapper/023:52:050
134491390,4ptp4l0-21swapper/023:52:040
134491390,4ptp4l0-21swapper/023:15:280
134491390,4ptp4l0-21swapper/022:45:270
134491390,4ptp4l0-21swapper/022:20:190
134491390,4ptp4l0-21swapper/021:36:450
134491390,4ptp4l0-21swapper/021:05:200
134491390,4ptp4l0-21swapper/020:40:180
134491390,4ptp4l0-21swapper/020:00:160
134491390,4ptp4l0-21swapper/000:21:340
134491390,3ptp4l25935-21iostat22:10:162
134491390,3ptp4l19172-21ntp_states20:45:233
134491380,5ptp4l0-21swapper/322:01:053
134491380,5ptp4l0-21swapper/319:22:083
134491380,5ptp4l0-21swapper/021:45:140
134491380,4ptp4l9253-21/usr/sbin/munin20:25:180
134491380,4ptp4l0-21swapper/323:45:113
134491380,4ptp4l0-21swapper/322:40:123
134491380,4ptp4l0-21swapper/321:45:143
134491380,4ptp4l0-21swapper/321:30:153
134491380,4ptp4l0-21swapper/321:20:213
134491380,4ptp4l0-21swapper/321:05:283
134491380,4ptp4l0-21swapper/320:40:143
134491380,4ptp4l0-21swapper/319:55:143
134491380,4ptp4l0-21swapper/319:50:283
134491380,4ptp4l0-21swapper/300:35:193
134491380,4ptp4l0-21swapper/223:40:042
134491380,4ptp4l0-21swapper/223:10:302
134491380,4ptp4l0-21swapper/223:00:302
134491380,4ptp4l0-21swapper/221:56:502
134491380,4ptp4l0-21swapper/221:00:272
134491380,4ptp4l0-21swapper/220:58:222
134491380,4ptp4l0-21swapper/220:18:032
134491380,4ptp4l0-21swapper/220:10:252
134491380,4ptp4l0-21swapper/219:50:202
134491380,4ptp4l0-21swapper/219:36:242
134491380,4ptp4l0-21swapper/219:30:282
134491380,3ptp4l0-21swapper/221:45:162
134491380,3ptp4l0-21swapper/219:20:412
134491380,3ptp4l0-21swapper/200:26:582
134491380,3ptp4l0-21swapper/000:10:150
6302993713,21cyclictest31908-21/usr/sbin/munin20:05:293
46198370,4rtkit-daemon0-21swapper/321:16:493
46198370,4rtkit-daemon0-21swapper/320:10:073
134491370,4ptp4l0-21swapper/321:40:053
134491370,4ptp4l0-21swapper/320:55:123
134491370,4ptp4l0-21swapper/319:28:473
134491370,4ptp4l0-21swapper/221:21:052
134491370,3ptp4l0-21swapper/321:36:233
134491370,3ptp4l0-21swapper/320:35:143
134491370,3ptp4l0-21swapper/300:00:203
134491360,4ptp4l0-21swapper/320:15:233
134491360,3ptp4l0-21swapper/320:24:283
134491360,3ptp4l0-21swapper/221:25:272
134491350,4ptp4l0-21swapper/319:18:423
134491350,3ptp4l0-21swapper/320:51:553
134491340,3ptp4l0-21swapper/320:25:013
6302992924,3cyclictest41-21ksoftirqd/319:31:393
46198290,4rtkit-daemon0-21swapper/319:05:523
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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