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2026-06-23 - 04:10
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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 Tue Jun 23, 2026 00:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1340799698,17cyclictest24579-21sshd00:10:221
1340799655,17cyclictest13089-21cat23:45:261
134491640,3ptp4l30983-21irqstats22:05:203
1340799648,11cyclictest8476-21grep21:15:271
1340799634,17cyclictest21705-21cut00:05:191
134491610,4ptp4l0-21swapper/000:00:270
134491610,18ptp4l12021-21fw_packets22:35:170
1340799617,16cyclictest32141-21chrt00:26:231
134491600,3ptp4l0-21swapper/100:00:291
1340799609,9cyclictest15578-21unixbench_singl22:40:271
1340799596,10cyclictest28076-21/usr/sbin/munin00:20:161
134491580,3ptp4l0-21swapper/321:10:323
134491580,3ptp4l0-21swapper/220:20:262
134491570,17ptp4l31086-21meminfo22:05:210
1340799576,11cyclictest0-21swapper/121:07:431
1340799575,11cyclictest11511-21latency_hist22:35:001
1340799572,11cyclictest4676-21latency_hist22:20:011
134491560,3ptp4l0-21swapper/321:34:593
134491560,3ptp4l0-21swapper/123:10:261
134491560,3ptp4l0-21swapper/120:30:241
13408995622,4cyclictest33-21ksoftirqd/222:12:342
1340799565,16cyclictest1-21systemd19:15:241
1340799565,10cyclictest5635-21cat20:00:311
1340799563,11cyclictest23673-21cut21:50:191
1340799563,11cyclictest23673-21cut21:50:191
255012550,4sleep10-21swapper/120:45:141
134491550,4ptp4l0-21swapper/021:35:160
134491550,3ptp4l0-21swapper/320:25:313
134491550,3ptp4l0-21swapper/319:48:313
134491550,3ptp4l0-21swapper/319:17:543
13408995520,4cyclictest33-21ksoftirqd/222:19:022
1340799559,12cyclictest6380-21taskset23:31:101
134491540,4ptp4l0-21swapper/300:35:113
134491540,4ptp4l0-21swapper/223:30:312
1340799546,12cyclictest0-21swapper/120:58:051
1340799542,10cyclictest0-21swapper/121:35:191
134491530,4ptp4l0-21swapper/323:50:433
134491530,4ptp4l0-21swapper/319:27:543
134491530,4ptp4l0-21swapper/019:35:270
134491530,3ptp4l0-21swapper/323:39:443
134491520,6ptp4l0-21swapper/320:10:583
134491520,4ptp4l0-21swapper/323:03:543
134491520,4ptp4l0-21swapper/023:09:590
134491520,4ptp4l0-21swapper/022:52:460
13408995222,3cyclictest33-21ksoftirqd/220:36:442
13408995213,6cyclictest33-21ksoftirqd/222:20:272
1340799524,15cyclictest21288-21ps20:35:171
134491510,4ptp4l0-21swapper/319:44:253
134491510,4ptp4l0-21swapper/300:17:223
134491510,3ptp4l0-21swapper/323:17:393
134491510,3ptp4l0-21swapper/323:17:393
13408995121,4cyclictest33-21ksoftirqd/223:37:532
13408995120,5cyclictest33-21ksoftirqd/221:04:042
13408995119,4cyclictest33-21ksoftirqd/221:07:592
13408995117,6cyclictest33-21ksoftirqd/200:05:232
13408995114,4cyclictest33-21ksoftirqd/221:32:502
1340799515,10cyclictest23739-21sed23:00:201
134491500,5ptp4l0-21swapper/319:06:543
134491500,4ptp4l0-21swapper/220:02:142
134491500,4ptp4l0-21swapper/022:43:450
134491500,3ptp4l0-21swapper/321:20:423
13408995019,3cyclictest33-21ksoftirqd/223:41:002
13408995018,6cyclictest33-21ksoftirqd/222:35:292
13408995017,6cyclictest33-21ksoftirqd/222:50:242
13408995016,6cyclictest33-21ksoftirqd/221:25:172
1340799507,11cyclictest0-21swapper/121:44:301
134491490,4ptp4l0-21swapper/320:00:453
134491490,4ptp4l0-21swapper/219:34:502
134491490,3ptp4l0-21swapper/322:20:153
1340899496,9cyclictest33-21ksoftirqd/220:20:012
13408994920,4cyclictest33-21ksoftirqd/222:44:002
13408994919,4cyclictest33-21ksoftirqd/219:35:492
13408994917,4cyclictest33-21ksoftirqd/221:14:542
13408994917,4cyclictest33-21ksoftirqd/220:29:002
13408994917,3cyclictest33-21ksoftirqd/223:46:482
13408994914,6cyclictest33-21ksoftirqd/223:00:282
13408994914,4cyclictest33-21ksoftirqd/223:15:182
13408994914,4cyclictest33-21ksoftirqd/223:15:182
1340799497,8cyclictest17272-21ntp_states23:55:231
1340799497,11cyclictest0-21swapper/121:28:371
1340799495,10cyclictest22031-21cat21:45:231
134491480,5ptp4l0-21swapper/221:35:152
134491480,5ptp4l0-21swapper/019:08:260
134491480,4ptp4l0-21swapper/319:51:063
134491480,4ptp4l0-21swapper/000:32:330
134491480,11ptp4l0-21swapper/000:06:150
13408994819,4cyclictest33-21ksoftirqd/223:00:002
13408994818,6cyclictest33-21ksoftirqd/220:11:202
13408994816,4cyclictest33-21ksoftirqd/221:40:552
13408994814,5cyclictest33-21ksoftirqd/220:30:262
1340799486,17cyclictest7509-21iostat_ios23:35:181
134491470,6ptp4l0-21swapper/219:06:242
134491470,4ptp4l0-21swapper/300:24:113
13408994719,7cyclictest33-21ksoftirqd/219:10:342
13408994717,3cyclictest33-21ksoftirqd/220:57:382
13408994714,5cyclictest33-21ksoftirqd/219:50:232
13408994714,4cyclictest33-21ksoftirqd/200:20:232
1340899471,2cyclictest121rcu_preempt21:20:582
1340799478,7cyclictest134491ptp4l21:21:151
1340799477,6cyclictest0-21swapper/123:25:211
1340799472,12cyclictest17333-21ntpq22:45:231
134491460,4ptp4l25518-21apt-get21:55:102
134491460,3ptp4l0-21swapper/319:10:253
134491460,3ptp4l0-21swapper/023:59:560
134491460,3ptp4l0-21swapper/022:47:480
13408994615,4cyclictest33-21ksoftirqd/200:14:182
13408994613,6cyclictest33-21ksoftirqd/222:45:142
13408994612,6cyclictest33-21ksoftirqd/200:05:002
13408994611,5cyclictest33-21ksoftirqd/219:40:132
1340799462,10cyclictest0-21swapper/120:05:171
1340799462,10cyclictest0-21swapper/120:05:171
134491450,9ptp4l0-21swapper/022:33:500
134491450,4ptp4l0-21swapper/223:25:192
134491450,10ptp4l0-21swapper/319:35:053
1340899458,5cyclictest33-21ksoftirqd/220:43:122
13408994515,5cyclictest33-21ksoftirqd/219:55:222
1340799456,15cyclictest14530-21ntpq19:10:221
1340799455,7cyclictest26823-21mailstats21:55:241
13406994532,5cyclictest9-21ksoftirqd/020:20:010
134691440,5getstats1340699cyclictest20:57:530
134491440,9ptp4l0-21swapper/021:43:160
134491440,4ptp4l6834-21apt-get21:15:123
134491440,4ptp4l25774-21apt-get00:15:130
134491440,4ptp4l20659-21apt-get21:45:092
134491440,4ptp4l0-21swapper/323:29:153
134491440,3ptp4l0-21swapper/322:11:243
134491440,10ptp4l0-21swapper/023:41:380
134491440,10ptp4l0-21swapper/020:00:290
1340899447,6cyclictest33-21ksoftirqd/222:25:182
13408994437,4cyclictest33-21ksoftirqd/220:50:192
13408994437,4cyclictest33-21ksoftirqd/220:50:192
13408994425,3cyclictest33-21ksoftirqd/223:10:012
13408994417,6cyclictest33-21ksoftirqd/222:30:252
13408994416,7cyclictest33-21ksoftirqd/200:25:532
13408994415,3cyclictest33-21ksoftirqd/221:52:402
13408994415,3cyclictest33-21ksoftirqd/221:52:402
13408994414,7cyclictest33-21ksoftirqd/223:05:252
13408994414,3cyclictest33-21ksoftirqd/219:21:592
1340799448,14cyclictest30179-21iostat_ios19:45:171
1340799446,7cyclictest18722-21df22:50:131
134491430,9ptp4l0-21swapper/219:16:572
134491430,9ptp4l0-21swapper/019:56:590
134491430,9ptp4l0-21swapper/019:22:170
134491430,5ptp4l25826-21diskstats21:55:130
134491430,4ptp4l9459-21diskstats21:20:140
134491430,4ptp4l25373-21apt-get20:45:132
134491430,4ptp4l0-21swapper/320:18:573
134491430,4ptp4l0-21swapper/019:45:210
134491430,3ptp4l121rcu_preempt20:40:163
1340899432,2cyclictest121rcu_preempt23:22:472
1340899432,2cyclictest121rcu_preempt23:22:472
1340899431,2cyclictest121rcu_preempt22:00:142
13408994312,5cyclictest33-21ksoftirqd/223:50:202
1340899430,3cyclictest121rcu_preempt00:30:432
1340799437,7cyclictest14554-21meminfo20:20:201
1340799437,6cyclictest134691getstats23:42:441
1340799434,13cyclictest20938-21irqrtprio19:25:161
134491420,9ptp4l0-21swapper/020:42:490
134491420,8ptp4l0-21swapper/320:22:173
134491420,5ptp4l0-21swapper/321:25:253
134491420,5ptp4l0-21swapper/121:30:141
134491420,5ptp4l0-21swapper/120:25:221
134491420,5ptp4l0-21swapper/119:50:111
134491420,4ptp4l28099-21hddtemp_smartct20:50:150
134491420,4ptp4l28099-21hddtemp_smartct20:50:150
134491420,4ptp4l1964-21users00:30:291
134491420,4ptp4l0-21swapper/023:50:260
134491420,4ptp4l0-21swapper/020:05:390
134491420,4ptp4l0-21swapper/020:05:390
134491420,3ptp4l31903-21apt-get19:50:130
134491420,3ptp4l13857-21apt-get23:50:131
13408994238,2cyclictest33-21ksoftirqd/223:55:252
13408994212,5cyclictest33-21ksoftirqd/222:05:272
13408994211,7cyclictest33-21ksoftirqd/200:35:222
13408994210,7cyclictest33-21ksoftirqd/220:05:242
13408994210,7cyclictest33-21ksoftirqd/220:05:242
1340799426,7cyclictest565-21iostat_ios22:10:191
13406994237,3cyclictest9-21ksoftirqd/023:35:000
13406994236,3cyclictest9-21ksoftirqd/023:05:000
13406994226,5cyclictest9-21ksoftirqd/019:45:010
134491410,8ptp4l0-21swapper/320:35:023
134491410,8ptp4l0-21swapper/119:08:581
134491410,5ptp4l4829-21df_abs21:10:150
134491410,5ptp4l1204-21python21:00:250
134491410,5ptp4l0-21swapper/323:30:133
134491410,5ptp4l0-21swapper/320:45:123
134491410,5ptp4l0-21swapper/123:05:291
134491410,5ptp4l0-21swapper/021:50:190
134491410,5ptp4l0-21swapper/021:50:190
134491410,5ptp4l0-21swapper/021:45:180
134491410,5ptp4l0-21swapper/020:48:240
134491410,5ptp4l0-21swapper/000:35:120
134491410,5ptp4l0-21swapper/000:10:280
134491410,4ptp4l4969-21hddtemp_smartct21:10:171
134491410,4ptp4l26344-21iostat_ios00:15:191
134491410,4ptp4l0-21swapper/323:45:153
134491410,4ptp4l0-21swapper/319:32:023
134491410,4ptp4l0-21swapper/022:57:440
134491410,4ptp4l0-21swapper/021:17:200
134491410,4ptp4l0-21swapper/020:38:060
134491410,4ptp4l0-21swapper/020:12:100
134491410,3ptp4l7000-21apt-get22:25:101
134491410,3ptp4l28787-21memory22:00:201
134491410,3ptp4l16922-21ls20:25:230
13408994110,3cyclictest33-21ksoftirqd/200:15:192
1340799418,6cyclictest0-21swapper/120:50:161
1340799418,6cyclictest0-21swapper/120:50:161
1340799415,7cyclictest25568-21iostat_ios19:35:191
134491400,5ptp4l10000-21sed23:40:193
134491400,5ptp4l0-21swapper/120:15:131
134491400,5ptp4l0-21swapper/023:15:270
134491400,5ptp4l0-21swapper/023:15:270
134491400,5ptp4l0-21swapper/022:15:140
134491400,4ptp4l29281-21ls23:10:280
134491400,4ptp4l10973-21/usr/sbin/munin22:30:283
134491400,4ptp4l0-21swapper/323:20:233
134491400,4ptp4l0-21swapper/323:20:233
134491400,4ptp4l0-21swapper/322:00:113
134491400,4ptp4l0-21swapper/321:00:003
134491400,4ptp4l0-21swapper/320:50:193
134491400,4ptp4l0-21swapper/320:50:193
134491400,4ptp4l0-21swapper/300:00:253
134491400,4ptp4l0-21swapper/219:49:072
134491400,4ptp4l0-21swapper/120:40:231
134491400,4ptp4l0-21swapper/023:35:150
134491400,4ptp4l0-21swapper/023:27:290
134491400,4ptp4l0-21swapper/023:21:150
134491400,4ptp4l0-21swapper/023:21:150
134491400,4ptp4l0-21swapper/021:34:120
134491400,4ptp4l0-21swapper/020:22:110
134491400,4ptp4l0-21swapper/019:15:080
134491400,3ptp4l8119-21ntp_states22:25:203
134491400,3ptp4l28950-21ntp_states22:00:220
134491400,3ptp4l26430-21meminfo23:05:213
134491400,3ptp4l2195-21apt-get21:05:140
134491400,3ptp4l20967-21diskstats21:45:123
1340799407,4cyclictest134491ptp4l22:35:261
1340799406,13cyclictest19854-21sshd19:21:541
1340799404,6cyclictest0-21swapper/122:59:281
134491390,5ptp4l17136-21ntpq21:35:223
134491390,4ptp4l3362-21timerwakeupswit19:55:261
134491390,4ptp4l26277-21irqrtprio21:55:173
134491390,4ptp4l18459-21cp00:00:013
134491390,4ptp4l1-21systemd19:30:250
134491390,4ptp4l0-21swapper/322:55:163
134491390,4ptp4l0-21swapper/322:45:503
134491390,4ptp4l0-21swapper/321:50:143
134491390,4ptp4l0-21swapper/321:50:143
134491390,4ptp4l0-21swapper/321:05:223
134491390,4ptp4l0-21swapper/320:31:353
134491390,4ptp4l0-21swapper/319:55:123
134491390,4ptp4l0-21swapper/300:07:353
134491390,4ptp4l0-21swapper/123:22:111
134491390,4ptp4l0-21swapper/123:22:111
134491390,4ptp4l0-21swapper/123:15:061
134491390,4ptp4l0-21swapper/123:15:061
134491390,4ptp4l0-21swapper/122:05:491
134491390,4ptp4l0-21swapper/022:25:020
134491390,4ptp4l0-21swapper/022:20:140
134491390,4ptp4l0-21swapper/022:10:160
134491390,4ptp4l0-21swapper/021:26:140
134491390,4ptp4l0-21swapper/020:31:380
134491390,4ptp4l0-21swapper/019:10:450
134491390,4ptp4l0-21swapper/000:24:230
134491390,3ptp4l12670-21ntpq23:45:230
134491390,3ptp4l0-21swapper/321:40:473
1340899393,3cyclictest121rcu_preempt19:25:172
1340899390,2cyclictest121rcu_preempt21:15:502
1340799395,11cyclictest0-21swapper/119:34:041
134491380,4ptp4l0-21swapper/322:35:223
134491380,4ptp4l0-21swapper/322:19:523
134491380,4ptp4l0-21swapper/321:00:113
134491380,4ptp4l0-21swapper/319:23:583
134491380,4ptp4l0-21swapper/300:26:553
134491380,4ptp4l0-21swapper/121:00:261
134491380,4ptp4l0-21swapper/120:11:211
134491380,4ptp4l0-21swapper/119:44:201
134491380,4ptp4l0-21swapper/100:35:251
134491380,4ptp4l0-21swapper/019:25:100
134491380,3ptp4l0-21swapper/000:29:270
134491370,4ptp4l0-21swapper/323:11:353
134491370,4ptp4l0-21swapper/322:42:083
134491370,3ptp4l2068-21seq00:31:393
134491370,3ptp4l0-21swapper/322:54:303
134491370,3ptp4l0-21swapper/320:08:263
134491370,3ptp4l0-21swapper/320:08:263
134491370,3ptp4l0-21swapper/122:20:061
134491360,4ptp4l0-21swapper/300:13:313
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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