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2026-07-11 - 16:55
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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 rackdslot4.osadl.org (updated Sat Jul 11, 2026 12:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
125452205170,23sleep30-21swapper/307:08:403
123832205170,24sleep10-21swapper/107:06:331
125972202169,22sleep20-21swapper/207:09:192
125422200167,22sleep00-21swapper/007:08:370
156472630,5sleep315649-21apt-key07:15:013
252952610,2sleep20-21swapper/211:55:142
138491580,1ptp4l391rcuc/307:55:153
1310199582,17cyclictest27707-21grep12:00:133
1310199566,7cyclictest9278-21netstat09:10:233
250012530,2sleep00-21swapper/007:30:270
13099995345,5cyclictest22473-21cron11:49:591
1310199520,16cyclictest12104-21unixbench_multi12:30:283
1310199511,15cyclictest10137-21/usr/sbin/munin11:25:153
138491500,1ptp4l391rcuc/307:40:343
1310199506,6cyclictest31829-21phc2sys08:50:213
144892480,3sleep30-21swapper/311:30:273
1310199486,7cyclictest6350-21sed11:15:233
13101994828,17cyclictest614-21cron07:50:013
1310199480,15cyclictest5503-21/usr/sbin/munin10:10:183
1310199453,16cyclictest15553-21latency_hist08:20:003
1310099450,44cyclictest0-21swapper/208:40:322
1310099440,42cyclictest0-21swapper/210:45:342
1310099430,42cyclictest0-21swapper/208:55:332
138491420,0ptp4l401ktimersoftd/312:16:543
138491420,0ptp4l401ktimersoftd/308:33:453
138491420,0ptp4l401ktimersoftd/307:20:403
13100994134,4cyclictest12795-21latency_hist09:20:002
13099994034,3cyclictest25-21ksoftirqd/108:45:011
138491390,0ptp4l401ktimersoftd/309:03:173
13099993932,5cyclictest25-21ksoftirqd/111:26:131
1310199384,7cyclictest41-21ksoftirqd/308:00:053
13099993831,5cyclictest25-21ksoftirqd/108:03:211
13098993833,3cyclictest15988-21fschecks_count09:25:170
13100993730,4cyclictest33-21ksoftirqd/207:57:532
1309999378,27cyclictest0-21swapper/110:46:431
13099993731,3cyclictest27473-21awk10:54:591
1309999370,36cyclictest0-21swapper/108:56:421
1309999370,36cyclictest0-21swapper/108:25:531
13098993730,4cyclictest9-21ksoftirqd/010:16:590
13098993730,4cyclictest9-21ksoftirqd/010:10:130
13101993630,4cyclictest41-21ksoftirqd/311:04:193
13100993630,4cyclictest33-21ksoftirqd/211:44:072
13100993630,4cyclictest33-21ksoftirqd/210:58:222
13100993630,4cyclictest33-21ksoftirqd/210:34:012
13100993630,4cyclictest33-21ksoftirqd/207:24:262
13100993630,4cyclictest33-21ksoftirqd/207:18:212
13100993630,3cyclictest33-21ksoftirqd/209:24:142
13100993629,4cyclictest33-21ksoftirqd/209:27:312
13100993629,4cyclictest33-21ksoftirqd/208:48:432
1310099360,2cyclictest121rcu_preempt08:35:122
1310099360,2cyclictest121rcu_preempt08:35:112
13099993631,3cyclictest30301-21cron08:50:011
13099993630,4cyclictest25-21ksoftirqd/109:42:171
13099993630,4cyclictest25-21ksoftirqd/109:00:571
13099993629,4cyclictest25-21ksoftirqd/111:36:031
13099993629,4cyclictest25-21ksoftirqd/110:59:201
13098993630,4cyclictest9-21ksoftirqd/012:29:490
13098993630,4cyclictest9-21ksoftirqd/011:05:540
13098993630,4cyclictest9-21ksoftirqd/008:54:470
13101993529,4cyclictest41-21ksoftirqd/312:29:053
13101993529,4cyclictest41-21ksoftirqd/312:24:113
13101993528,5cyclictest41-21ksoftirqd/307:31:343
13101993528,4cyclictest41-21ksoftirqd/309:56:523
13101993517,6cyclictest41-21ksoftirqd/308:11:493
13100993530,3cyclictest33-21ksoftirqd/208:02:332
13100993529,4cyclictest33-21ksoftirqd/210:42:012
13100993529,4cyclictest33-21ksoftirqd/210:14:212
13100993529,3cyclictest33-21ksoftirqd/208:26:272
13100993528,5cyclictest33-21ksoftirqd/207:11:032
13100993528,4cyclictest33-21ksoftirqd/210:25:112
13100993528,4cyclictest33-21ksoftirqd/208:24:242
13099993530,3cyclictest25-21ksoftirqd/109:33:441
13099993529,4cyclictest25-21ksoftirqd/111:52:561
13099993529,4cyclictest25-21ksoftirqd/109:08:401
13099993529,4cyclictest25-21ksoftirqd/107:11:261
1309999352,31cyclictest27506-21kworker/1:007:51:541
13098993529,4cyclictest9-21ksoftirqd/012:17:070
13098993529,4cyclictest9-21ksoftirqd/009:59:130
13098993529,4cyclictest9-21ksoftirqd/009:05:250
13098993529,4cyclictest9-21ksoftirqd/007:51:210
13098993528,4cyclictest9-21ksoftirqd/011:53:410
1310199346,4cyclictest41-21ksoftirqd/312:13:363
1310199343,5cyclictest0-21swapper/311:50:123
1310199343,4cyclictest41-21ksoftirqd/310:08:123
13101993429,3cyclictest41-21ksoftirqd/309:22:593
13101993428,4cyclictest41-21ksoftirqd/312:40:013
13101993428,4cyclictest41-21ksoftirqd/311:46:003
13101993428,4cyclictest41-21ksoftirqd/311:41:343
13101993428,4cyclictest41-21ksoftirqd/310:30:103
13101993428,4cyclictest41-21ksoftirqd/310:17:543
13101993428,4cyclictest41-21ksoftirqd/309:31:333
13101993428,4cyclictest41-21ksoftirqd/307:17:303
13101993427,4cyclictest41-21ksoftirqd/310:56:413
13100993429,3cyclictest33-21ksoftirqd/210:23:292
13100993428,4cyclictest33-21ksoftirqd/212:34:272
13100993428,4cyclictest33-21ksoftirqd/211:47:362
13100993428,4cyclictest33-21ksoftirqd/210:02:362
13100993428,4cyclictest33-21ksoftirqd/209:10:102
13100993428,4cyclictest33-21ksoftirqd/208:54:492
13099993428,4cyclictest25-21ksoftirqd/112:38:181
13099993428,4cyclictest25-21ksoftirqd/109:56:101
13099993428,4cyclictest25-21ksoftirqd/108:17:211
13099993428,4cyclictest25-21ksoftirqd/107:35:531
13099993427,5cyclictest25-21ksoftirqd/111:23:481
13099993427,4cyclictest25-21ksoftirqd/108:05:581
13098993429,3cyclictest9-21ksoftirqd/008:35:110
13098993429,3cyclictest9-21ksoftirqd/008:35:100
13098993428,4cyclictest9-21ksoftirqd/010:29:150
13098993428,4cyclictest9-21ksoftirqd/009:39:400
13098993428,4cyclictest9-21ksoftirqd/008:04:560
13098993428,4cyclictest9-21ksoftirqd/007:26:090
13098993428,3cyclictest9-21ksoftirqd/009:20:140
13098993427,4cyclictest9-21ksoftirqd/007:15:210
13098993413,3cyclictest11238-21cat09:15:170
1310199337,4cyclictest41-21ksoftirqd/308:59:513
13101993328,3cyclictest41-21ksoftirqd/309:25:353
13101993328,3cyclictest41-21ksoftirqd/309:15:203
13101993327,4cyclictest41-21ksoftirqd/308:25:343
13101993327,4cyclictest41-21ksoftirqd/307:28:573
13101993318,4cyclictest41-21ksoftirqd/311:24:173
13100993328,3cyclictest33-21ksoftirqd/211:08:192
13100993328,3cyclictest33-21ksoftirqd/209:55:102
13100993328,3cyclictest33-21ksoftirqd/208:05:102
13100993327,4cyclictest33-21ksoftirqd/211:32:592
13100993327,4cyclictest33-21ksoftirqd/211:21:512
13100993327,4cyclictest33-21ksoftirqd/210:09:392
13100993327,4cyclictest33-21ksoftirqd/207:45:532
13100993327,4cyclictest33-21ksoftirqd/207:43:002
13100993327,4cyclictest33-21ksoftirqd/207:38:072
13100993327,4cyclictest33-21ksoftirqd/207:27:362
13100993326,4cyclictest33-21ksoftirqd/212:17:582
13099993328,3cyclictest25-21ksoftirqd/107:45:561
13099993328,3cyclictest25-21ksoftirqd/107:30:151
13099993327,4cyclictest25-21ksoftirqd/112:17:471
13099993327,4cyclictest25-21ksoftirqd/111:59:581
13099993327,4cyclictest25-21ksoftirqd/110:24:381
13099993327,4cyclictest25-21ksoftirqd/109:48:231
13099993327,4cyclictest25-21ksoftirqd/109:22:481
13099993327,4cyclictest25-21ksoftirqd/107:21:331
13099993326,4cyclictest25-21ksoftirqd/109:28:381
13098993328,3cyclictest9-21ksoftirqd/011:02:370
13098993328,3cyclictest9-21ksoftirqd/008:40:090
13098993327,4cyclictest9-21ksoftirqd/011:40:360
13098993327,4cyclictest9-21ksoftirqd/010:54:180
13098993327,4cyclictest9-21ksoftirqd/008:05:040
13098993327,4cyclictest9-21ksoftirqd/007:57:380
13098993312,3cyclictest27770-21latency_hist09:50:010
13098993312,3cyclictest10442-21expr11:25:130
1310199325,6cyclictest41-21ksoftirqd/310:20:143
13101993227,3cyclictest41-21ksoftirqd/311:05:113
13101993227,3cyclictest41-21ksoftirqd/307:51:363
13101993227,3cyclictest41-21ksoftirqd/307:35:153
13100993226,4cyclictest33-21ksoftirqd/212:38:382
13100993226,4cyclictest33-21ksoftirqd/211:37:572
13100993226,4cyclictest33-21ksoftirqd/210:36:262
13100993226,4cyclictest33-21ksoftirqd/208:17:142
13099993227,3cyclictest25-21ksoftirqd/110:06:371
13099993227,3cyclictest25-21ksoftirqd/109:50:081
13099993226,4cyclictest25-21ksoftirqd/111:19:551
13099993226,4cyclictest25-21ksoftirqd/111:10:111
13099993226,4cyclictest25-21ksoftirqd/111:01:201
13099993226,4cyclictest25-21ksoftirqd/107:17:201
13098993227,3cyclictest9-21ksoftirqd/012:08:250
13098993227,3cyclictest9-21ksoftirqd/009:40:360
13098993226,4cyclictest9-21ksoftirqd/012:11:330
13098993226,4cyclictest9-21ksoftirqd/011:56:080
13098993226,4cyclictest9-21ksoftirqd/011:15:110
13098993226,4cyclictest9-21ksoftirqd/010:57:070
13098993226,4cyclictest9-21ksoftirqd/010:04:550
13098993226,4cyclictest9-21ksoftirqd/009:33:470
13098993226,4cyclictest9-21ksoftirqd/009:11:520
13098993226,4cyclictest9-21ksoftirqd/008:25:310
13098993226,4cyclictest9-21ksoftirqd/007:40:010
13098993226,4cyclictest9-21ksoftirqd/007:21:360
13101993126,3cyclictest41-21ksoftirqd/310:50:113
13101993125,4cyclictest41-21ksoftirqd/311:12:243
13101993125,4cyclictest41-21ksoftirqd/310:37:123
13101993124,4cyclictest41-21ksoftirqd/310:42:583
13100993126,3cyclictest33-21ksoftirqd/209:42:492
13100993126,3cyclictest33-21ksoftirqd/207:51:412
13100993125,4cyclictest33-21ksoftirqd/212:23:292
13099993126,3cyclictest25-21ksoftirqd/111:32:211
13099993125,4cyclictest25-21ksoftirqd/110:42:281
13099993125,4cyclictest25-21ksoftirqd/107:56:071
13099993125,3cyclictest25-21ksoftirqd/108:50:381
1309899319,4cyclictest11218-21cut12:30:190
13098993126,3cyclictest9-21ksoftirqd/012:24:280
13098993126,3cyclictest9-21ksoftirqd/010:48:290
13098993126,3cyclictest9-21ksoftirqd/010:37:360
13098993125,4cyclictest9-21ksoftirqd/012:03:230
13098993125,3cyclictest9-21ksoftirqd/011:10:530
13098993124,5cyclictest9-21ksoftirqd/010:22:290
13098993124,4cyclictest9-21ksoftirqd/011:39:060
13098993117,12cyclictest9-21ksoftirqd/007:35:130
13098993112,16cyclictest14664-21sendmail_mailtr07:10:250
138491300,0ptp4l401ktimersoftd/308:24:443
13101993025,3cyclictest41-21ksoftirqd/310:45:183
13101993025,3cyclictest41-21ksoftirqd/310:29:473
13101993025,3cyclictest41-21ksoftirqd/309:42:393
13101993024,4cyclictest41-21ksoftirqd/309:06:063
13101993024,4cyclictest41-21ksoftirqd/308:44:433
13101993024,3cyclictest41-21ksoftirqd/311:55:113
13100993025,3cyclictest33-21ksoftirqd/210:18:002
13100993025,3cyclictest33-21ksoftirqd/209:32:062
13100993025,3cyclictest33-21ksoftirqd/208:10:112
13100993024,4cyclictest33-21ksoftirqd/212:29:472
13100993024,4cyclictest33-21ksoftirqd/212:06:212
13099993024,4cyclictest25-21ksoftirqd/112:04:551
13099993024,4cyclictest25-21ksoftirqd/111:40:211
13099993024,4cyclictest25-21ksoftirqd/110:11:501
13099993024,4cyclictest25-21ksoftirqd/109:10:371
13099993024,4cyclictest25-21ksoftirqd/108:22:101
13098993025,3cyclictest9-21ksoftirqd/011:20:410
13098993025,3cyclictest9-21ksoftirqd/008:33:080
13098993024,4cyclictest9-21ksoftirqd/011:32:210
13098993024,4cyclictest9-21ksoftirqd/009:51:560
13098993024,4cyclictest9-21ksoftirqd/008:55:560
13098993024,4cyclictest9-21ksoftirqd/008:45:330
13101992924,3cyclictest41-21ksoftirqd/308:50:013
13101992924,3cyclictest41-21ksoftirqd/308:37:533
13101992924,3cyclictest41-21ksoftirqd/308:37:533
13101992915,4cyclictest41-21ksoftirqd/308:08:373
13100992923,4cyclictest33-21ksoftirqd/212:04:572
13100992923,4cyclictest33-21ksoftirqd/211:53:022
13100992923,4cyclictest33-21ksoftirqd/211:27:492
13100992923,4cyclictest33-21ksoftirqd/209:03:002
13099992924,3cyclictest25-21ksoftirqd/110:27:311
13099992924,3cyclictest1912-21grep12:10:271
13099992923,4cyclictest25-21ksoftirqd/111:09:071
13099992923,4cyclictest25-21ksoftirqd/110:35:501
13099992923,4cyclictest25-21ksoftirqd/110:31:211
13099992923,4cyclictest25-21ksoftirqd/108:36:151
13099992923,4cyclictest25-21ksoftirqd/108:36:151
13099992923,4cyclictest25-21ksoftirqd/108:14:081
1309899299,3cyclictest32733-21seq07:45:550
1309899299,3cyclictest16330-21irqrtprio10:30:190
13098992924,3cyclictest9-21ksoftirqd/012:39:120
13101992823,3cyclictest41-21ksoftirqd/312:08:033
13101992823,3cyclictest41-21ksoftirqd/309:50:273
13101992823,3cyclictest41-21ksoftirqd/309:35:123
1310099286,19cyclictest1319-21snmpd07:33:362
13100992823,3cyclictest33-21ksoftirqd/212:11:162
13100992823,3cyclictest33-21ksoftirqd/211:14:162
13100992823,3cyclictest33-21ksoftirqd/210:52:282
13100992822,4cyclictest33-21ksoftirqd/209:52:472
13099992822,4cyclictest25-21ksoftirqd/107:42:581
13098992823,3cyclictest9-21ksoftirqd/011:45:090
13098992823,3cyclictest9-21ksoftirqd/010:40:290
13098992823,3cyclictest9-21ksoftirqd/009:00:350
13098992823,3cyclictest9-21ksoftirqd/008:23:000
1310099276,19cyclictest0-21swapper/209:38:562
1310099271,24cyclictest6703-21meminfo09:05:202
13099992721,4cyclictest25-21ksoftirqd/112:25:581
13099992721,4cyclictest25-21ksoftirqd/108:33:181
13098992721,4cyclictest9-21ksoftirqd/010:06:280
13098992721,4cyclictest9-21ksoftirqd/008:16:200
138491260,1ptp4l401ktimersoftd/311:35:113
13101992621,3cyclictest41-21ksoftirqd/310:04:473
13100992621,3cyclictest33-21ksoftirqd/211:04:062
13100992621,3cyclictest33-21ksoftirqd/209:45:112
13100992621,3cyclictest33-21ksoftirqd/208:34:452
1310099261,14cyclictest0-21swapper/211:18:482
13099992621,3cyclictest25-21ksoftirqd/110:03:031
13099992620,4cyclictest25-21ksoftirqd/107:28:231
13101992520,3cyclictest41-21ksoftirqd/309:46:413
13099992521,2cyclictest29552-21kworker/1:212:20:121
13099992419,3cyclictest25-21ksoftirqd/109:20:011
13098992418,4cyclictest9-21ksoftirqd/008:12:030
13099992318,3cyclictest25-21ksoftirqd/112:33:081
13099992014,4cyclictest25-21ksoftirqd/110:16:511
13099991912,5cyclictest25-21ksoftirqd/112:07:201
13099991813,3cyclictest21349-21iostat_ios09:35:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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