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2026-06-18 - 14:25
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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 Thu Jun 18, 2026 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24042740,1sleep32405-21/usr/sbin/munin23:50:293
31950997325,4cyclictest25-21ksoftirqd/120:21:141
31950996925,4cyclictest25-21ksoftirqd/119:54:221
134491690,5ptp4l41-21ksoftirqd/320:42:483
31950996822,8cyclictest25-21ksoftirqd/121:20:001
134491660,9ptp4l0-21swapper/023:25:310
31951996425,9cyclictest33-21ksoftirqd/219:13:392
31951996329,5cyclictest33-21ksoftirqd/200:04:002
31951996327,3cyclictest33-21ksoftirqd/200:10:172
31950996319,8cyclictest25-21ksoftirqd/119:20:171
134491630,3ptp4l18848-21apt-get22:10:133
31950996222,8cyclictest25-21ksoftirqd/121:21:561
31950996120,4cyclictest25-21ksoftirqd/120:47:501
31950996026,3cyclictest25-21ksoftirqd/119:49:541
31951995927,7cyclictest33-21ksoftirqd/221:30:162
31951995922,4cyclictest33-21ksoftirqd/221:20:002
31950995928,3cyclictest25-21ksoftirqd/123:22:121
31950995921,7cyclictest25-21ksoftirqd/100:15:481
31950995920,4cyclictest25-21ksoftirqd/120:09:151
31950995914,8cyclictest25-21ksoftirqd/122:50:141
31951995827,7cyclictest33-21ksoftirqd/221:06:072
3195099587,6cyclictest25-21ksoftirqd/121:10:271
3195099587,6cyclictest25-21ksoftirqd/121:10:271
31950995828,7cyclictest25-21ksoftirqd/123:00:001
31950995824,9cyclictest25-21ksoftirqd/123:05:201
31950995817,8cyclictest25-21ksoftirqd/123:01:251
134491580,5ptp4l9342-21tr21:50:120
134491580,4ptp4l0-21swapper/020:00:230
31951995725,6cyclictest33-21ksoftirqd/223:35:222
31951995722,6cyclictest33-21ksoftirqd/221:10:252
31951995722,6cyclictest33-21ksoftirqd/221:10:252
31951995718,10cyclictest33-21ksoftirqd/219:36:582
31950995729,3cyclictest25-21ksoftirqd/119:33:491
31950995720,9cyclictest25-21ksoftirqd/122:04:591
134491570,3ptp4l0-21swapper/200:30:112
134491570,15ptp4l31801-21ls23:45:223
134491570,15ptp4l31801-21ls23:45:223
31951995629,2cyclictest33-21ksoftirqd/219:25:002
31951995624,7cyclictest33-21ksoftirqd/222:14:122
31951995624,6cyclictest33-21ksoftirqd/221:50:002
31951995624,6cyclictest33-21ksoftirqd/221:50:002
31951995622,9cyclictest33-21ksoftirqd/219:47:572
31951995620,9cyclictest33-21ksoftirqd/220:48:272
31951995618,6cyclictest33-21ksoftirqd/220:25:082
31950995623,7cyclictest25-21ksoftirqd/100:00:141
31950995622,5cyclictest25-21ksoftirqd/100:32:521
31950995611,7cyclictest25-21ksoftirqd/122:25:231
134491560,4ptp4l27475-21chrt21:20:010
31951995526,4cyclictest33-21ksoftirqd/220:18:192
31951995523,7cyclictest33-21ksoftirqd/221:20:142
31951995523,7cyclictest33-21ksoftirqd/219:58:082
31951995523,3cyclictest33-21ksoftirqd/222:58:062
31951995522,8cyclictest33-21ksoftirqd/219:32:432
31951995522,7cyclictest33-21ksoftirqd/222:41:122
31951995522,5cyclictest33-21ksoftirqd/219:40:232
31951995522,4cyclictest33-21ksoftirqd/223:50:272
31951995519,7cyclictest33-21ksoftirqd/220:11:082
31950995528,4cyclictest25-21ksoftirqd/119:37:081
31950995526,8cyclictest25-21ksoftirqd/120:29:231
31950995517,7cyclictest25-21ksoftirqd/121:42:341
134491550,4ptp4l6721-21apt20:35:121
134491550,4ptp4l6721-21apt20:35:121
31951995423,7cyclictest33-21ksoftirqd/223:47:482
31951995423,7cyclictest33-21ksoftirqd/223:47:472
31951995422,7cyclictest33-21ksoftirqd/222:54:522
31951995422,7cyclictest33-21ksoftirqd/222:15:412
31951995422,7cyclictest33-21ksoftirqd/222:15:412
31951995421,5cyclictest33-21ksoftirqd/200:05:292
31951995420,4cyclictest33-21ksoftirqd/221:53:242
31950995423,8cyclictest25-21ksoftirqd/123:47:511
31950995423,8cyclictest25-21ksoftirqd/123:47:501
31950995420,6cyclictest25-21ksoftirqd/122:50:001
31950995420,6cyclictest25-21ksoftirqd/122:50:001
31950995412,7cyclictest25-21ksoftirqd/123:40:371
134491540,4ptp4l0-21swapper/021:45:150
134491540,4ptp4l0-21swapper/021:45:150
31951995333,11cyclictest33-21ksoftirqd/221:01:182
31951995324,7cyclictest33-21ksoftirqd/223:43:352
31951995320,7cyclictest33-21ksoftirqd/223:19:522
31951995320,7cyclictest33-21ksoftirqd/223:19:512
31951995320,6cyclictest33-21ksoftirqd/223:10:152
31951995319,6cyclictest33-21ksoftirqd/223:55:262
31951995318,4cyclictest33-21ksoftirqd/223:30:012
31951995318,4cyclictest33-21ksoftirqd/221:38:012
31951995315,6cyclictest33-21ksoftirqd/223:05:232
31950995319,9cyclictest25-21ksoftirqd/120:15:111
134491530,5ptp4l0-21swapper/023:35:130
31951995230,10cyclictest33-21ksoftirqd/220:05:002
31951995221,7cyclictest33-21ksoftirqd/222:29:252
31951995220,4cyclictest33-21ksoftirqd/221:26:102
31951995220,4cyclictest33-21ksoftirqd/219:29:592
31951995218,6cyclictest33-21ksoftirqd/220:55:202
31951995214,6cyclictest33-21ksoftirqd/223:20:142
31950995230,4cyclictest25-21ksoftirqd/122:30:081
31950995218,5cyclictest25-21ksoftirqd/120:50:261
31950995210,4cyclictest25-21ksoftirqd/121:30:011
134491520,4ptp4l0-21swapper/323:11:463
134491520,3ptp4l0-21swapper/022:40:290
31951995120,7cyclictest33-21ksoftirqd/220:21:432
31951995119,3cyclictest33-21ksoftirqd/222:35:302
31951995116,6cyclictest33-21ksoftirqd/223:00:162
31950995128,7cyclictest25-21ksoftirqd/119:30:011
134491510,4ptp4l0-21swapper/321:30:003
134491510,4ptp4l0-21swapper/319:18:533
134491510,4ptp4l0-21swapper/023:01:360
134491510,4ptp4l0-21swapper/021:58:270
134491510,3ptp4l0-21swapper/219:15:222
31951995031,5cyclictest33-21ksoftirqd/221:55:182
31951995027,8cyclictest33-21ksoftirqd/200:30:002
31951995025,9cyclictest33-21ksoftirqd/223:31:172
31951995024,5cyclictest33-21ksoftirqd/220:41:182
31951995022,6cyclictest33-21ksoftirqd/220:07:502
31951995010,9cyclictest33-21ksoftirqd/220:51:182
31950995016,7cyclictest25-21ksoftirqd/119:10:351
134491500,9ptp4l30273-21irqstats19:05:190
134491500,4ptp4l0-21swapper/322:38:373
134491500,4ptp4l0-21swapper/120:31:091
134491500,4ptp4l0-21swapper/022:28:240
134491500,4ptp4l0-21swapper/020:15:040
134491500,4ptp4l0-21swapper/019:11:310
134491500,4ptp4l0-21swapper/000:35:480
134491500,3ptp4l0-21swapper/120:04:091
31951994923,9cyclictest33-21ksoftirqd/222:21:392
31951994917,8cyclictest33-21ksoftirqd/222:05:502
31951994916,4cyclictest33-21ksoftirqd/200:21:162
31951994915,6cyclictest33-21ksoftirqd/221:40:182
31951994914,5cyclictest33-21ksoftirqd/219:50:172
3195099495,2cyclictest25-21ksoftirqd/122:10:191
3195099494,2cyclictest25-21ksoftirqd/120:45:011
31950994910,3cyclictest25-21ksoftirqd/119:40:141
134491490,4ptp4l0-21swapper/322:05:113
134491490,4ptp4l0-21swapper/320:17:073
134491490,4ptp4l0-21swapper/122:07:451
134491490,4ptp4l0-21swapper/121:05:051
134491490,3ptp4l0-21swapper/100:14:381
31951994830,8cyclictest33-21ksoftirqd/200:35:162
3195199482,3cyclictest121rcu_preempt20:34:162
31950994828,5cyclictest25-21ksoftirqd/123:25:131
3195099482,6cyclictest25-21ksoftirqd/121:39:381
31950994825,4cyclictest25-21ksoftirqd/122:22:331
3195099482,4cyclictest25-21ksoftirqd/122:15:121
3195099482,4cyclictest25-21ksoftirqd/122:15:121
31950994821,8cyclictest25-21ksoftirqd/120:15:011
134491480,4ptp4l0-21swapper/020:12:260
134491480,3ptp4l2398-21gmain21:40:063
134491480,3ptp4l0-21swapper/323:55:243
134491480,3ptp4l0-21swapper/022:37:370
134491480,16ptp4l0-21swapper/022:24:540
134491480,10ptp4l0-21swapper/119:05:131
31951994719,3cyclictest33-21ksoftirqd/220:36:372
31951994719,3cyclictest33-21ksoftirqd/220:36:372
31951994714,6cyclictest33-21ksoftirqd/222:30:182
3195099474,3cyclictest25-21ksoftirqd/123:10:221
3195099473,2cyclictest121rcu_preempt21:50:261
3195099471,2cyclictest121rcu_preempt00:05:181
3195099470,2cyclictest25-21ksoftirqd/122:39:591
134491470,4ptp4l0-21swapper/322:15:153
134491470,4ptp4l0-21swapper/322:15:153
134491470,4ptp4l0-21swapper/022:59:040
134491470,4ptp4l0-21swapper/000:21:570
134491470,3ptp4l0-21swapper/323:26:333
134491470,3ptp4l0-21swapper/321:55:283
134491470,12ptp4l0-21swapper/020:24:300
3195199468,7cyclictest33-21ksoftirqd/200:17:462
3195199463,6cyclictest121rcu_preempt22:45:432
3195199463,6cyclictest121rcu_preempt22:45:432
3195099465,2cyclictest25-21ksoftirqd/123:50:221
3195099465,2cyclictest25-21ksoftirqd/121:55:211
31950994631,3cyclictest25-21ksoftirqd/100:20:261
3195099462,3cyclictest25-21ksoftirqd/123:55:161
31950994612,7cyclictest25-21ksoftirqd/119:55:171
3195099460,3cyclictest121rcu_preempt21:47:381
3195099460,3cyclictest121rcu_preempt21:47:371
31947994618,6cyclictest9-21ksoftirqd/021:30:260
31947994618,3cyclictest9-21ksoftirqd/021:35:260
31947994616,7cyclictest9-21ksoftirqd/021:00:260
134491460,4ptp4l0-21swapper/023:09:240
134491460,4ptp4l0-21swapper/022:46:100
134491460,4ptp4l0-21swapper/022:46:100
134491460,4ptp4l0-21swapper/021:42:380
134491460,3ptp4l0-21swapper/019:57:480
3195199451,3cyclictest121rcu_preempt22:04:592
31950994539,3cyclictest25-21ksoftirqd/119:20:001
3195099452,3cyclictest121rcu_preempt21:30:261
3195099450,3cyclictest121rcu_preempt23:32:391
3195099450,2cyclictest121rcu_preempt22:40:231
134491450,8ptp4l0-21swapper/321:15:113
134491450,5ptp4l0-21swapper/319:06:213
134491450,4ptp4l1619-21ls23:50:190
134491450,4ptp4l0-21swapper/319:45:073
134491450,4ptp4l0-21swapper/020:42:030
134491450,3ptp4l0-21swapper/019:30:150
3195099445,2cyclictest25-21ksoftirqd/123:39:541
31950994438,3cyclictest25-21ksoftirqd/100:30:011
31950994426,3cyclictest25-21ksoftirqd/123:18:211
31950994426,3cyclictest25-21ksoftirqd/123:18:211
134691440,13getstats0-21swapper/321:55:003
3195099433,7cyclictest121rcu_preempt21:00:271
134491430,9ptp4l0-21swapper/321:30:213
134491430,5ptp4l0-21swapper/322:00:113
134491430,5ptp4l0-21swapper/000:30:230
134491430,4ptp4l0-21swapper/321:10:053
134491430,4ptp4l0-21swapper/321:10:053
134491430,10ptp4l9-21ksoftirqd/000:05:230
31950994238,2cyclictest25-21ksoftirqd/100:40:011
3194799423,6cyclictest121rcu_preempt23:45:010
3194799420,2cyclictest121rcu_preempt23:20:010
3194799420,2cyclictest121rcu_preempt23:20:000
134491420,6ptp4l0-21swapper/022:30:280
134491420,5ptp4l0-21swapper/000:15:170
134491420,3ptp4l5062-21iostat19:20:190
134491420,3ptp4l0-21swapper/323:35:293
134491420,11ptp4l0-21swapper/120:55:291
3194799416,3cyclictest9-21ksoftirqd/022:05:170
31947994136,3cyclictest9-21ksoftirqd/000:30:000
31947994136,2cyclictest9-21ksoftirqd/019:40:190
31947994135,4cyclictest4747-21kworker/0:021:05:050
31947994110,6cyclictest9-21ksoftirqd/023:10:540
134491410,5ptp4l4015-21apt-get19:20:033
134491410,5ptp4l15708-21/usr/sbin/munin22:00:270
134491410,5ptp4l0-21swapper/323:20:123
134491410,4ptp4l5395-21df22:50:133
134491410,4ptp4l26208-21memory20:05:190
134491410,4ptp4l19595-21apt-get00:30:113
134491410,4ptp4l0-21swapper/023:55:110
134491410,4ptp4l0-21swapper/023:45:320
134491410,4ptp4l0-21swapper/023:45:310
134491410,3ptp4l0-21swapper/320:45:453
134491410,2ptp4l0-21swapper/319:40:333
3194799408,7cyclictest9-21ksoftirqd/022:15:250
3194799408,7cyclictest9-21ksoftirqd/022:15:250
3194799402,5cyclictest0-21swapper/020:50:150
134491400,9ptp4l0-21swapper/021:17:050
134491400,5ptp4l30382-21fschecks_count21:25:140
134491400,4ptp4l7915-21hddtemp_smartct22:55:163
134491400,4ptp4l19319-21diskstats23:20:140
134491400,4ptp4l0-21swapper/319:25:303
134491400,4ptp4l0-21swapper/319:10:153
134491400,4ptp4l0-21swapper/021:10:160
134491400,4ptp4l0-21swapper/021:10:160
134491400,4ptp4l0-21swapper/020:45:230
134491400,4ptp4l0-21swapper/020:35:150
134491400,4ptp4l0-21swapper/020:35:150
134491400,4ptp4l0-21swapper/020:25:110
134491400,4ptp4l0-21swapper/019:35:200
134491400,4ptp4l0-21swapper/000:11:420
134491400,3ptp4l0-21swapper/019:26:400
31947993934,2cyclictest9-21ksoftirqd/019:20:000
134491390,5ptp4l0-21swapper/320:10:333
134491390,4ptp4l1301-21snmpd23:00:323
134491390,4ptp4l0-21swapper/323:31:553
134491390,4ptp4l0-21swapper/321:23:223
134491390,4ptp4l0-21swapper/321:07:293
134491390,4ptp4l0-21swapper/320:55:153
134491390,4ptp4l0-21swapper/320:05:313
134491390,4ptp4l0-21swapper/300:10:203
134491390,4ptp4l0-21swapper/022:10:300
134491390,4ptp4l0-21swapper/020:55:160
134491390,4ptp4l0-21swapper/019:45:110
134491390,4ptp4l0-21swapper/000:00:110
134491390,3ptp4l0-21swapper/020:30:260
31947993824,3cyclictest9-21ksoftirqd/022:50:140
134491380,4ptp4l23504-21/usr/sbin/munin22:20:133
134491380,4ptp4l19561-21apache221:35:203
134491380,4ptp4l12451-21/usr/sbin/munin00:15:143
134491380,4ptp4l0-21swapper/323:40:093
134491380,4ptp4l0-21swapper/323:15:123
134491380,4ptp4l0-21swapper/323:15:123
134491380,4ptp4l0-21swapper/323:05:163
134491380,4ptp4l0-21swapper/322:45:093
134491380,4ptp4l0-21swapper/322:45:093
134491380,4ptp4l0-21swapper/322:42:373
134491380,4ptp4l0-21swapper/322:32:153
134491380,4ptp4l0-21swapper/322:28:513
134491380,4ptp4l0-21swapper/321:00:133
134491380,4ptp4l0-21swapper/320:50:013
134491380,4ptp4l0-21swapper/320:04:153
134491380,4ptp4l0-21swapper/319:56:123
134491380,4ptp4l0-21swapper/300:35:223
134491380,4ptp4l0-21swapper/300:27:253
134491380,4ptp4l0-21swapper/300:05:043
134491380,4ptp4l0-21swapper/300:00:303
134491380,4ptp4l0-21swapper/219:05:262
134491380,4ptp4l0-21swapper/023:30:580
134491380,4ptp4l0-21swapper/019:53:240
134491380,3ptp4l14771-21/usr/sbin/munin00:20:243
134491370,4ptp4l0-21swapper/320:39:333
134491370,4ptp4l0-21swapper/320:39:333
134491370,4ptp4l0-21swapper/320:21:593
134491370,4ptp4l0-21swapper/319:52:153
134491370,4ptp4l0-21swapper/319:39:313
134491370,4ptp4l0-21swapper/319:30:053
134491370,3ptp4l0-21swapper/321:45:153
134491370,3ptp4l0-21swapper/321:45:153
134491370,3ptp4l0-21swapper/320:34:113
134491360,3ptp4l0-21swapper/320:27:413
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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