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2026-06-13 - 18:16
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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 Sat Jun 13, 2026 12:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
569521380,5sleep22121099cyclictest12:20:262
2121199702,6cyclictest0-21swapper/311:56:113
21210996830,4cyclictest33-21ksoftirqd/210:00:002
21210996534,5cyclictest33-21ksoftirqd/207:15:292
21210996533,5cyclictest33-21ksoftirqd/209:55:002
21210996532,4cyclictest33-21ksoftirqd/211:25:002
21210996531,6cyclictest33-21ksoftirqd/210:10:242
21210996431,4cyclictest33-21ksoftirqd/212:05:262
21210996325,4cyclictest33-21ksoftirqd/212:40:002
21210996324,16cyclictest33-21ksoftirqd/212:15:022
2121199622,6cyclictest0-21swapper/311:27:063
21210996232,5cyclictest33-21ksoftirqd/210:00:132
21210996230,4cyclictest33-21ksoftirqd/207:45:242
2121199617,6cyclictest0-21swapper/310:40:273
21210996129,5cyclictest33-21ksoftirqd/208:55:012
21210996128,7cyclictest33-21ksoftirqd/211:35:272
21210996128,4cyclictest33-21ksoftirqd/210:40:012
21210996128,4cyclictest33-21ksoftirqd/209:05:162
21210996123,14cyclictest33-21ksoftirqd/208:00:272
21210996031,5cyclictest33-21ksoftirqd/208:35:202
21210996031,3cyclictest33-21ksoftirqd/207:35:272
21210996030,4cyclictest33-21ksoftirqd/207:30:192
21210996028,5cyclictest33-21ksoftirqd/209:20:132
21210996028,3cyclictest33-21ksoftirqd/208:15:142
21210996027,5cyclictest33-21ksoftirqd/208:05:232
134491600,3ptp4l24795-21apt-get11:55:122
21210995930,5cyclictest33-21ksoftirqd/208:20:142
21210995930,4cyclictest33-21ksoftirqd/211:30:012
21210995926,4cyclictest33-21ksoftirqd/210:05:172
21210995916,3cyclictest0-21swapper/211:13:292
2121199587,6cyclictest0-21swapper/309:05:183
2121099588,7cyclictest33-21ksoftirqd/209:35:002
21210995829,3cyclictest33-21ksoftirqd/210:35:002
21210995829,3cyclictest33-21ksoftirqd/210:35:002
21210995828,7cyclictest33-21ksoftirqd/210:55:222
2121099580,2cyclictest121rcu_preempt11:05:012
2121099580,2cyclictest121rcu_preempt11:05:012
134491580,4ptp4l0-21swapper/311:38:243
134491580,4ptp4l0-21swapper/107:50:581
134491580,4ptp4l0-21swapper/107:40:221
2121199574,7cyclictest5503-21sed07:45:153
2121199574,6cyclictest0-21swapper/308:50:113
2121199572,32cyclictest0-21swapper/312:13:323
2121199571,10cyclictest20765-21chrt08:15:283
21210995728,7cyclictest33-21ksoftirqd/207:20:212
21210995710,3cyclictest33-21ksoftirqd/211:45:002
134491570,3ptp4l0-21swapper/207:40:332
2121199567,5cyclictest0-21swapper/310:00:123
2121199565,6cyclictest26111-21cpuspeed_turbos08:30:133
2121199562,10cyclictest29097-21taskset12:04:143
2121099565,3cyclictest121rcu_preempt09:49:592
21210995628,5cyclictest33-21ksoftirqd/209:35:132
21210995628,5cyclictest33-21ksoftirqd/207:50:252
21210995627,5cyclictest33-21ksoftirqd/210:20:272
21210995626,3cyclictest33-21ksoftirqd/207:10:192
21210995625,4cyclictest33-21ksoftirqd/211:30:012
21210995624,3cyclictest33-21ksoftirqd/212:15:242
134491560,4ptp4l0-21swapper/211:45:212
134491560,3ptp4l0-21swapper/309:00:293
2121199557,6cyclictest0-21swapper/308:27:453
2121199554,6cyclictest16287-21sendmail_mailqu10:25:263
2121199553,6cyclictest401ktimersoftd/311:20:133
2121199553,6cyclictest12322-21cut12:35:233
2121199551,11cyclictest16444-21taskset09:19:473
2121199551,10cyclictest3733-21taskset12:17:343
21210995524,4cyclictest33-21ksoftirqd/210:15:182
21210995523,3cyclictest33-21ksoftirqd/212:25:262
21210995520,4cyclictest33-21ksoftirqd/209:00:132
134491550,4ptp4l0-21swapper/112:15:151
134491550,4ptp4l0-21swapper/112:10:171
2121199546,11cyclictest0-21swapper/307:25:193
2121199542,11cyclictest18611-21chrt08:12:193
2121199541,7cyclictest12901-21cut08:00:203
2121199541,11cyclictest31098-21chrt12:05:313
2121199540,15cyclictest25442-21awk09:35:283
2121199540,12cyclictest5889-21taskset12:20:353
2121099545,2cyclictest33-21ksoftirqd/211:54:592
21210995425,5cyclictest33-21ksoftirqd/211:10:012
21210995422,4cyclictest33-21ksoftirqd/210:30:002
134491540,4ptp4l0-21swapper/110:57:181
134491540,4ptp4l0-21swapper/010:55:140
2121199537,7cyclictest0-21swapper/309:45:133
2121199530,20cyclictest0-21swapper/310:35:223
2121099536,3cyclictest33-21ksoftirqd/208:10:262
21210995321,3cyclictest33-21ksoftirqd/208:42:382
134491530,4ptp4l0-21swapper/111:32:181
134491530,3ptp4l0-21swapper/110:02:021
134491530,3ptp4l0-21swapper/109:18:431
2121199528,7cyclictest0-21swapper/310:20:183
2121199526,6cyclictest1402-21sed08:45:193
2121199526,6cyclictest0-21swapper/307:53:173
2121199525,11cyclictest0-21swapper/308:40:263
2121199524,7cyclictest31867-21sed09:50:193
2121199524,6cyclictest21961-21irqrtprio07:10:193
2121199523,8cyclictest32446-21mailstats11:00:253
2121199523,8cyclictest32446-21mailstats11:00:253
2121199523,7cyclictest41-21ksoftirqd/307:30:283
2121199522,11cyclictest26040-21chrt10:47:083
2121199522,10cyclictest7635-21chrt10:07:173
2121199521,15cyclictest6064-21wc08:55:203
2121099524,3cyclictest33-21ksoftirqd/212:35:002
21210995221,9cyclictest33-21ksoftirqd/207:55:262
2121099520,6cyclictest33-21ksoftirqd/208:55:302
134491520,3ptp4l0-21swapper/110:50:291
2121199517,7cyclictest0-21swapper/309:30:243
2121199517,6cyclictest0-21swapper/308:20:053
2121199514,6cyclictest7464-21sed11:15:273
2121199513,6cyclictest9273-21cut10:10:243
2121199513,6cyclictest6960-21fschecks_time12:25:153
2121199512,5cyclictest0-21swapper/307:22:323
2121199512,10cyclictest22009-21taskset11:49:433
2121199510,8cyclictest41-21ksoftirqd/309:55:013
2121199510,12cyclictest30794-21taskset10:59:113
21210995117,4cyclictest33-21ksoftirqd/209:25:142
134491510,5ptp4l0-21swapper/107:05:321
2121199503,6cyclictest3650-21awk11:10:133
2121199501,6cyclictest0-21swapper/309:25:233
2121199500,11cyclictest25318-21taskset07:16:473
2121199500,11cyclictest15941-21sed08:05:263
2121099504,2cyclictest121rcu_preempt07:25:222
21210995032,3cyclictest33-21ksoftirqd/208:50:002
2121099502,5cyclictest33-21ksoftirqd/209:10:152
134491500,5ptp4l0-21swapper/107:10:241
2121199493,5cyclictest41-21ksoftirqd/311:40:203
2121199490,5cyclictest0-21swapper/308:35:173
2121099496,4cyclictest33-21ksoftirqd/208:30:272
21210994936,4cyclictest33-21ksoftirqd/210:51:052
2121099493,3cyclictest121rcu_preempt12:00:132
2121099492,3cyclictest33-21ksoftirqd/209:19:592
134491490,4ptp4l0-21swapper/111:45:471
2121199484,6cyclictest13429-21fschecks_count11:30:153
2121199482,9cyclictest0-21swapper/309:43:243
2121199482,10cyclictest1828-21irqrtprio11:05:193
2121199481,5cyclictest0-21swapper/311:50:193
21210994833,7cyclictest33-21ksoftirqd/210:45:012
2121099480,8cyclictest24222-21apt-get10:45:132
2121099480,6cyclictest33-21ksoftirqd/211:15:162
134491480,4ptp4l0-21swapper/109:29:111
134491480,3ptp4l0-21swapper/112:00:261
2121199476,7cyclictest0-21swapper/310:31:493
2121199476,7cyclictest0-21swapper/310:31:493
2121199476,6cyclictest27504-21wc10:50:213
2121199472,12cyclictest10875-21cat12:34:553
21210994723,4cyclictest33-21ksoftirqd/209:40:422
134491470,7ptp4l0-21swapper/009:20:580
134491470,4ptp4l0-21swapper/208:26:572
134491470,4ptp4l0-21swapper/107:35:131
134491470,3ptp4l0-21swapper/111:58:561
134491470,3ptp4l0-21swapper/107:17:091
2121199467,5cyclictest0-21swapper/307:59:383
2121199464,11cyclictest14147-21taskset09:14:483
134491460,3ptp4l0-21swapper/109:30:271
2121199457,5cyclictest0-21swapper/309:22:063
2121199452,26cyclictest0-21swapper/307:36:523
2121199452,18cyclictest0-21swapper/307:40:273
134491450,5ptp4l0-21swapper/310:15:013
134491450,10ptp4l0-21swapper/108:00:381
134491450,10ptp4l0-21swapper/008:03:020
21208994431,11cyclictest9-21ksoftirqd/012:35:120
134491440,9ptp4l0-21swapper/011:34:550
134491440,9ptp4l0-21swapper/011:10:410
134491440,4ptp4l26519-21apt-get10:50:130
134491430,9ptp4l0-21swapper/008:57:240
134491430,9ptp4l0-21swapper/007:10:500
134491430,8ptp4l0-21swapper/008:22:050
134491430,5ptp4l15533-21ntp_states09:15:230
134491430,5ptp4l0-21swapper/111:40:131
134491430,5ptp4l0-21swapper/011:00:280
134491430,5ptp4l0-21swapper/011:00:280
134491430,5ptp4l0-21swapper/007:25:280
134491420,5ptp4l3663-21df10:00:140
134491420,5ptp4l24339-21apt-get11:55:030
134491420,5ptp4l0-21swapper/112:25:231
134491420,5ptp4l0-21swapper/011:15:130
134491420,5ptp4l0-21swapper/007:40:210
134491420,4ptp4l11134-21apt-get12:35:111
134491420,4ptp4l10704-21diskstats10:15:140
134491420,3ptp4l15432-21meminfo08:05:190
134491420,3ptp4l0-21swapper/009:51:330
134491420,2ptp4l0-21swapper/108:16:521
46198410,2rtkit-daemon460-21rtkit-daemon12:30:181
134491410,8ptp4l0-21swapper/011:35:590
134491410,5ptp4l0-21swapper/011:44:290
134491410,5ptp4l0-21swapper/009:00:180
134491410,5ptp4l0-21swapper/007:30:010
134491410,4ptp4l31734-21ntp_states08:40:260
134491410,4ptp4l31457-21apt-get12:10:040
134491410,4ptp4l22752-21python08:20:261
134491410,4ptp4l0-21swapper/010:20:210
134491410,4ptp4l0-21swapper/007:05:400
134491410,3ptp4l31443-21diskstats11:00:151
134491410,3ptp4l31443-21diskstats11:00:151
134491410,3ptp4l2803-21ls11:05:280
134491410,3ptp4l22875-21meminfo10:40:220
134491400,5ptp4l15870-21/usr/sbin/munin11:35:171
134491400,5ptp4l10279-21fschecks_time07:55:161
134491400,5ptp4l0-21swapper/012:17:240
134491400,5ptp4l0-21swapper/011:49:270
134491400,5ptp4l0-21swapper/009:35:180
134491400,4ptp4l4024-21hddtemp_smartct11:10:161
134491400,4ptp4l3283-21hddtemp_smartct08:50:140
134491400,4ptp4l1374-21diskstats09:55:150
134491400,4ptp4l0-21swapper/112:20:281
134491400,4ptp4l0-21swapper/111:50:241
134491400,4ptp4l0-21swapper/110:33:011
134491400,4ptp4l0-21swapper/110:33:011
134491400,4ptp4l0-21swapper/109:57:011
134491400,4ptp4l0-21swapper/109:10:541
134491400,4ptp4l0-21swapper/108:50:121
134491400,4ptp4l0-21swapper/108:10:141
134491400,4ptp4l0-21swapper/011:50:400
134491400,4ptp4l0-21swapper/011:25:130
134491400,4ptp4l0-21swapper/011:24:440
134491400,4ptp4l0-21swapper/010:35:170
134491400,4ptp4l0-21swapper/010:25:230
134491400,4ptp4l0-21swapper/009:31:420
134491400,4ptp4l0-21swapper/008:45:290
134491400,4ptp4l0-21swapper/008:36:080
134491400,4ptp4l0-21swapper/008:19:370
134491400,4ptp4l0-21swapper/008:11:350
134491400,4ptp4l0-21swapper/007:50:160
134491400,4ptp4l0-21swapper/007:21:240
134491400,3ptp4l30197-21apt-get07:30:031
134491400,3ptp4l29620-21df12:05:130
134491400,3ptp4l26872-21ls07:20:231
134491400,3ptp4l0-21swapper/111:17:351
134491400,3ptp4l0-21swapper/109:07:291
134491400,3ptp4l0-21swapper/010:12:110
134691390,6getstats2120999cyclictest10:40:551
134491390,4ptp4l25158-21latency10:45:191
134491390,4ptp4l0-21swapper/110:35:211
134491390,4ptp4l0-21swapper/109:54:271
134491390,4ptp4l0-21swapper/109:43:121
134491390,4ptp4l0-21swapper/108:57:061
134491390,4ptp4l0-21swapper/108:25:071
134491390,4ptp4l0-21swapper/107:48:051
134491390,4ptp4l0-21swapper/107:25:171
134491390,4ptp4l0-21swapper/012:31:240
134491390,4ptp4l0-21swapper/012:26:210
134491390,4ptp4l0-21swapper/012:20:120
134491390,4ptp4l0-21swapper/012:00:220
134491390,4ptp4l0-21swapper/010:46:020
134491390,4ptp4l0-21swapper/010:30:170
134491390,4ptp4l0-21swapper/010:30:170
134491390,4ptp4l0-21swapper/010:08:380
134491390,4ptp4l0-21swapper/009:41:240
134491390,4ptp4l0-21swapper/009:28:260
134491390,4ptp4l0-21swapper/009:10:140
134491390,4ptp4l0-21swapper/009:05:230
134491390,4ptp4l0-21swapper/008:33:110
134491390,3ptp4l2418-21ntp_states11:05:231
134491390,3ptp4l16683-21users10:25:301
134491390,3ptp4l14386-21users10:20:291
134491380,4ptp4l25694-21sed07:20:000
134491380,4ptp4l0-21swapper/112:07:011
134491380,4ptp4l0-21swapper/111:25:261
134491380,4ptp4l0-21swapper/110:11:131
134491380,4ptp4l0-21swapper/110:05:211
134491380,4ptp4l0-21swapper/109:35:581
134491380,4ptp4l0-21swapper/109:03:171
134491380,4ptp4l0-21swapper/108:45:131
134491380,4ptp4l0-21swapper/108:35:191
134491380,4ptp4l0-21swapper/108:30:051
134491380,4ptp4l0-21swapper/008:25:140
134491380,4ptp4l0-21swapper/007:58:090
134491380,4ptp4l0-21swapper/007:46:100
134491380,4ptp4l0-21swapper/007:35:060
134491380,3ptp4l0-21swapper/111:20:561
134491380,3ptp4l0-21swapper/110:15:421
134491380,3ptp4l0-21swapper/109:24:511
134491380,3ptp4l0-21swapper/108:40:211
134491380,3ptp4l0-21swapper/108:05:321
134491380,3ptp4l0-21swapper/009:45:140
134491370,4ptp4l0-21swapper/109:47:501
46198320,14rtkit-daemon18874-21apt-get07:05:132
188592215,10sleep30-21swapper/307:05:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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