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2026-03-27 - 09:52
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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 Fri Mar 27, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
371521560,6sleep31578599cyclictest23:40:283
371521560,6sleep31578599cyclictest23:40:283
914821440,3sleep31578599cyclictest23:55:163
1911421420,7sleep01578299cyclictest23:05:230
134491710,10ptp4l14295-21irqstats19:05:201
15783996934,5cyclictest25-21ksoftirqd/122:55:001
15783996635,10cyclictest25-21ksoftirqd/123:50:211
15783996632,4cyclictest25-21ksoftirqd/120:50:261
15783996533,5cyclictest25-21ksoftirqd/121:55:001
15783996331,8cyclictest25-21ksoftirqd/100:00:001
15783996129,4cyclictest25-21ksoftirqd/123:15:191
15783996028,8cyclictest25-21ksoftirqd/120:55:131
15783995928,8cyclictest25-21ksoftirqd/120:50:001
15783995926,6cyclictest25-21ksoftirqd/100:35:131
15783995924,8cyclictest25-21ksoftirqd/121:22:001
15783995828,8cyclictest25-21ksoftirqd/121:35:251
15783995828,6cyclictest25-21ksoftirqd/119:40:201
15783995826,8cyclictest25-21ksoftirqd/122:55:171
15783995810,45cyclictest15699-21kworker/1:123:30:291
134491580,3ptp4l0-21swapper/121:00:331
134491580,3ptp4l0-21swapper/119:35:251
134491580,3ptp4l0-21swapper/100:00:341
15783995728,4cyclictest25-21ksoftirqd/122:45:271
15783995723,4cyclictest25-21ksoftirqd/100:25:171
15783995721,6cyclictest25-21ksoftirqd/122:20:001
134491570,3ptp4l0-21swapper/121:49:371
134491570,3ptp4l0-21swapper/021:30:160
15783995629,6cyclictest25-21ksoftirqd/120:30:301
15783995622,7cyclictest25-21ksoftirqd/100:20:191
134491560,4ptp4l0-21swapper/121:31:261
134491560,3ptp4l0-21swapper/100:10:271
134491560,3ptp4l0-21swapper/100:10:271
15783995525,6cyclictest25-21ksoftirqd/119:25:201
15783995522,6cyclictest25-21ksoftirqd/120:00:201
1578399552,10cyclictest25-21ksoftirqd/122:00:141
134491550,8ptp4l0-21swapper/200:23:592
15783995423,7cyclictest25-21ksoftirqd/123:46:581
15783995423,7cyclictest25-21ksoftirqd/120:35:151
15783995421,8cyclictest25-21ksoftirqd/120:20:001
15783995420,7cyclictest25-21ksoftirqd/123:10:261
15783995420,7cyclictest25-21ksoftirqd/123:10:261
15783995417,7cyclictest25-21ksoftirqd/119:30:181
134491540,4ptp4l0-21swapper/223:58:512
1578399534,5cyclictest25-21ksoftirqd/123:25:141
15783995323,7cyclictest25-21ksoftirqd/123:40:271
15783995323,7cyclictest25-21ksoftirqd/123:40:271
15783995318,8cyclictest25-21ksoftirqd/100:15:271
134491530,3ptp4l0-21swapper/323:30:193
159602520,4sleep315959-21cpuspeed_turbos20:20:143
15783995220,6cyclictest25-21ksoftirqd/121:15:271
163162510,4sleep10-21swapper/123:00:181
1578399513,3cyclictest25-21ksoftirqd/122:00:011
15783995123,3cyclictest25-21ksoftirqd/119:10:171
15783995119,7cyclictest25-21ksoftirqd/120:10:191
134491510,7ptp4l0-21swapper/319:09:423
134491510,5ptp4l0-21swapper/019:09:040
134491510,4ptp4l0-21swapper/300:04:163
134491510,4ptp4l0-21swapper/221:35:582
134491510,11ptp4l0-21swapper/023:46:590
134491510,11ptp4l0-21swapper/023:37:100
1578399505,3cyclictest25-21ksoftirqd/122:20:191
1578399505,3cyclictest121rcu_preempt22:36:511
1578399503,3cyclictest121rcu_preempt21:05:221
15783995023,7cyclictest25-21ksoftirqd/122:25:201
15783995014,7cyclictest25-21ksoftirqd/119:20:231
1578399501,3cyclictest25-21ksoftirqd/120:00:001
134491500,9ptp4l13450-21apt-get19:05:132
134491500,8ptp4l0-21swapper/019:47:120
134491500,4ptp4l0-21swapper/223:49:252
134491500,4ptp4l0-21swapper/222:31:542
134491500,4ptp4l0-21swapper/221:51:222
134491500,4ptp4l0-21swapper/219:58:092
134491500,4ptp4l0-21swapper/123:38:311
134491500,4ptp4l0-21swapper/022:26:490
134491500,2ptp4l0-21swapper/022:40:230
134491500,2ptp4l0-21swapper/000:00:160
1578399494,8cyclictest25-21ksoftirqd/100:05:181
1578399493,7cyclictest25-21ksoftirqd/120:40:261
1578399493,7cyclictest25-21ksoftirqd/120:40:261
1578399492,7cyclictest25-21ksoftirqd/120:30:001
1578399492,3cyclictest121rcu_preempt21:10:231
134491490,4ptp4l0-21swapper/223:14:072
134491490,4ptp4l0-21swapper/223:14:072
134491490,11ptp4l0-21swapper/023:12:190
134491490,11ptp4l0-21swapper/023:12:190
1578399485,2cyclictest25-21ksoftirqd/123:05:131
1578399484,6cyclictest0-21swapper/122:40:131
1578399483,6cyclictest25-21ksoftirqd/120:20:291
134491480,4ptp4l0-21swapper/219:30:142
134491480,4ptp4l0-21swapper/219:17:062
134491480,3ptp4l0-21swapper/221:21:392
134491480,3ptp4l0-21swapper/200:30:312
1578399472,5cyclictest25-21ksoftirqd/121:40:231
1578399470,7cyclictest25-21ksoftirqd/119:45:171
134491470,9ptp4l0-21swapper/300:31:493
134491470,4ptp4l0-21swapper/320:02:093
134491470,3ptp4l0-21swapper/322:27:503
134491470,3ptp4l0-21swapper/321:28:133
134491470,3ptp4l0-21swapper/020:48:150
134491470,12ptp4l0-21swapper/020:54:440
46198460,4rtkit-daemon0-21swapper/222:36:212
1578399461,7cyclictest25-21ksoftirqd/122:30:201
134491460,4ptp4l25188-21apt-get20:40:122
134491460,4ptp4l25188-21apt-get20:40:122
134491460,3ptp4l0-21swapper/020:32:380
134491460,2ptp4l33-21ksoftirqd/221:28:432
1578399454,3cyclictest121rcu_preempt21:25:171
15783994535,3cyclictest25-21ksoftirqd/119:15:141
1578399452,3cyclictest25-21ksoftirqd/123:25:011
1578399451,7cyclictest25-21ksoftirqd/122:10:001
134491450,4ptp4l18574-21apt-get00:15:132
134491450,4ptp4l0-21swapper/221:13:192
134491450,4ptp4l0-21swapper/022:58:150
134491450,2ptp4l0-21swapper/322:34:373
1578399446,3cyclictest25-21ksoftirqd/100:30:271
15783994440,2cyclictest241ktimersoftd/120:05:291
1578399441,7cyclictest25-21ksoftirqd/119:50:191
1578399441,7cyclictest25-21ksoftirqd/119:50:191
134691440,9getstats0-21swapper/222:55:152
134491440,9ptp4l1779-21sed22:30:002
134491440,9ptp4l0-21swapper/223:17:072
134491440,4ptp4l0-21swapper/321:37:083
134491440,12ptp4l0-21swapper/219:25:252
134491440,10ptp4l0-21swapper/321:06:433
134491440,10ptp4l0-21swapper/020:00:390
134491430,9ptp4l0-21swapper/223:52:172
134491430,9ptp4l0-21swapper/220:06:342
134491430,8ptp4l0-21swapper/221:30:042
134491430,8ptp4l0-21swapper/200:29:182
134491430,5ptp4l33-21ksoftirqd/220:50:152
134491430,5ptp4l0-21swapper/019:25:110
134491430,4ptp4l0-21swapper/020:25:250
134491430,14ptp4l0-21swapper/023:04:270
46198420,10rtkit-daemon0-21swapper/220:35:562
134491420,9ptp4l0-21swapper/200:11:012
134491420,9ptp4l0-21swapper/200:11:012
134491420,8ptp4l0-21swapper/220:01:552
134491420,5ptp4l19072-21/usr/sbin/munin00:15:170
134491420,5ptp4l0-21swapper/000:10:220
134491420,5ptp4l0-21swapper/000:10:220
134491420,4ptp4l6914-21apt-get21:10:120
134491420,4ptp4l4342-21apt-get23:45:113
134491420,4ptp4l27205-21apt-get23:25:102
134491420,4ptp4l26046-21iostat00:30:190
134491420,4ptp4l21247-21memory23:10:203
134491420,4ptp4l21247-21memory23:10:203
134491420,4ptp4l15817-21apt-get19:10:110
134491420,3ptp4l11080-21apt-get22:50:110
134691410,9getstats0-21swapper/219:54:102
134691410,9getstats0-21swapper/219:54:102
134491410,9ptp4l0-21swapper/219:35:012
134491410,8ptp4l0-21swapper/200:37:452
134491410,5ptp4l0-21swapper/022:20:270
134491410,4ptp4l6487-21apt-get22:40:123
134491410,4ptp4l3609-21users19:50:280
134491410,4ptp4l3609-21users19:50:280
134491410,4ptp4l28320-21ntp_states23:25:210
134491410,4ptp4l26023-21ntp_states23:20:220
134491410,4ptp4l0-21swapper/320:15:133
134491410,4ptp4l0-21swapper/222:40:342
134491410,4ptp4l0-21swapper/219:49:522
134491410,4ptp4l0-21swapper/219:20:172
134491410,4ptp4l0-21swapper/020:42:310
134491410,4ptp4l0-21swapper/020:42:310
134491410,3ptp4l29633-21apt-get19:40:110
134491410,3ptp4l0-21swapper/320:25:543
134491410,3ptp4l0-21swapper/020:56:460
134491400,6ptp4l9-21ksoftirqd/020:07:320
134491400,5ptp4l1578299cyclictest23:55:210
134491400,5ptp4l0-21swapper/321:10:173
134491400,5ptp4l0-21swapper/020:20:160
134491400,4ptp4l9883-21/usr/sbin/munin22:45:230
134491400,4ptp4l27058-21users22:00:273
134491400,4ptp4l18437-21apt-get21:35:020
134491400,4ptp4l0-21swapper/322:45:163
134491400,4ptp4l0-21swapper/321:19:063
134491400,4ptp4l0-21swapper/300:15:143
134491400,4ptp4l0-21swapper/300:10:313
134491400,4ptp4l0-21swapper/300:10:313
134491400,4ptp4l0-21swapper/300:05:233
134491400,4ptp4l0-21swapper/223:39:542
134491400,4ptp4l0-21swapper/223:21:102
134491400,4ptp4l0-21swapper/223:05:052
134491400,4ptp4l0-21swapper/223:02:212
134491400,4ptp4l0-21swapper/222:52:252
134491400,4ptp4l0-21swapper/222:10:062
134491400,4ptp4l0-21swapper/222:00:202
134491400,4ptp4l0-21swapper/221:08:472
134491400,4ptp4l0-21swapper/220:59:592
134491400,4ptp4l0-21swapper/220:23:142
134491400,4ptp4l0-21swapper/023:54:570
134491400,4ptp4l0-21swapper/022:04:220
134491400,4ptp4l0-21swapper/021:57:010
134491400,4ptp4l0-21swapper/021:40:220
134491400,4ptp4l0-21swapper/021:25:140
134491400,4ptp4l0-21swapper/020:14:580
134491400,4ptp4l0-21swapper/019:34:180
134491400,3ptp4l5076-21irqstats19:55:170
134491400,3ptp4l29930-21perl23:30:162
134491400,3ptp4l29787-21df22:20:173
134491400,3ptp4l20823-21/usr/sbin/munin19:20:130
134491400,3ptp4l14329-21iostat00:05:190
134491390,5ptp4l0-21swapper/323:17:153
134491390,4ptp4l18400-21df_abs19:15:143
134491390,4ptp4l0-21swapper/323:50:083
134491390,4ptp4l0-21swapper/323:01:253
134491390,4ptp4l0-21swapper/322:35:193
134491390,4ptp4l0-21swapper/322:16:523
134491390,4ptp4l0-21swapper/321:30:223
134491390,4ptp4l0-21swapper/321:25:013
134491390,4ptp4l0-21swapper/320:35:233
134491390,4ptp4l0-21swapper/319:30:183
134491390,4ptp4l0-21swapper/319:10:183
134491390,4ptp4l0-21swapper/300:21:333
134491390,4ptp4l0-21swapper/223:41:382
134491390,4ptp4l0-21swapper/223:41:382
134491390,4ptp4l0-21swapper/222:48:112
134491390,4ptp4l0-21swapper/222:17:072
134491390,4ptp4l0-21swapper/221:59:382
134491390,4ptp4l0-21swapper/221:03:172
134491390,4ptp4l0-21swapper/220:47:362
134491390,4ptp4l0-21swapper/220:31:132
134491390,4ptp4l0-21swapper/220:27:372
134491390,4ptp4l0-21swapper/220:18:332
134491390,4ptp4l0-21swapper/220:10:412
134491390,4ptp4l0-21swapper/200:06:412
134491390,4ptp4l0-21swapper/200:01:502
134491390,4ptp4l0-21swapper/023:40:170
134491390,4ptp4l0-21swapper/023:40:170
134491390,4ptp4l0-21swapper/023:33:190
134491390,4ptp4l0-21swapper/023:15:440
134491390,4ptp4l0-21swapper/022:16:530
134491390,4ptp4l0-21swapper/022:10:250
134491390,4ptp4l0-21swapper/022:07:480
134491390,4ptp4l0-21swapper/021:53:560
134491390,4ptp4l0-21swapper/021:46:250
134491390,4ptp4l0-21swapper/021:17:050
134491390,4ptp4l0-21swapper/021:05:560
134491390,4ptp4l0-21swapper/021:00:110
134491390,4ptp4l0-21swapper/020:15:150
134491390,4ptp4l0-21swapper/019:39:320
134491390,4ptp4l0-21swapper/019:17:420
134491390,4ptp4l0-21swapper/000:36:180
134491390,4ptp4l0-21swapper/000:25:190
134491390,4ptp4l0-21swapper/000:24:010
134491390,3ptp4l13132-21python21:20:260
134491390,2ptp4l4601-21hddtemp_smartct22:35:170
134491380,5ptp4l0-21swapper/321:59:243
134491380,4ptp4l0-21swapper/322:52:073
134491380,4ptp4l0-21swapper/322:13:233
134491380,4ptp4l0-21swapper/322:06:373
134491380,4ptp4l0-21swapper/300:28:353
134491380,4ptp4l0-21swapper/222:05:142
134491380,4ptp4l0-21swapper/221:49:182
134491380,4ptp4l0-21swapper/221:40:142
134491380,4ptp4l0-21swapper/221:15:482
134491380,4ptp4l0-21swapper/219:44:352
134491380,4ptp4l0-21swapper/219:10:252
134491380,4ptp4l0-21swapper/122:10:251
134491380,4ptp4l0-21swapper/022:30:190
134491380,4ptp4l0-21swapper/020:35:210
134491380,3ptp4l0-21swapper/323:39:553
134491380,3ptp4l0-21swapper/300:35:283
134491380,3ptp4l0-21swapper/222:23:322
134491370,4ptp4l0-21swapper/323:08:393
134491370,4ptp4l0-21swapper/321:51:573
134491370,4ptp4l0-21swapper/320:46:153
134491370,3ptp4l0-21swapper/322:58:593
134491370,3ptp4l0-21swapper/321:42:263
134491370,3ptp4l0-21swapper/320:09:493
134491370,3ptp4l0-21swapper/319:50:443
134491370,3ptp4l0-21swapper/319:50:443
134491370,3ptp4l0-21swapper/319:36:373
134491370,3ptp4l0-21swapper/319:20:133
134491360,3ptp4l0-21swapper/323:29:313
134491360,3ptp4l0-21swapper/321:45:553
134491360,3ptp4l0-21swapper/321:02:383
134491360,3ptp4l0-21swapper/320:52:513
134491360,2ptp4l0-21swapper/319:25:273
46198350,4rtkit-daemon0-21swapper/320:12:113
134491350,3ptp4l0-21swapper/320:56:193
134491350,3ptp4l0-21swapper/320:43:143
134491350,3ptp4l0-21swapper/320:43:143
134491350,3ptp4l0-21swapper/319:46:333
134491320,3ptp4l0-21swapper/320:33:263
134491260,4ptp4l0-21swapper/319:55:323
134491250,3ptp4l0-21swapper/319:40:383
15785992419,3cyclictest41-21ksoftirqd/323:23:433
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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