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2026-04-04 - 17:37
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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 792 highest latencies:
System rackdslot4.osadl.org (updated Sat Apr 04, 2026 12:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
114222241195,35sleep20-21swapper/207:08:592
114042204169,23sleep10-21swapper/107:08:451
114542203167,24sleep30-21swapper/307:09:243
92902200166,22sleep00-21swapper/007:05:070
724221540,6sleep11180399cyclictest11:20:091
138491650,0ptp4l401ktimersoftd/310:40:053
11803996328,11cyclictest25-21ksoftirqd/108:50:221
11803996328,11cyclictest25-21ksoftirqd/108:50:221
110782600,8sleep21180499cyclictest11:25:242
138491590,1ptp4l401ktimersoftd/311:33:503
11802995927,4cyclictest9-21ksoftirqd/009:50:140
11803995827,8cyclictest25-21ksoftirqd/108:55:131
11802995829,4cyclictest9-21ksoftirqd/010:40:180
11802995827,4cyclictest9-21ksoftirqd/012:30:190
11802995827,4cyclictest9-21ksoftirqd/011:50:180
11802995730,4cyclictest9-21ksoftirqd/011:00:240
11802995628,5cyclictest9-21ksoftirqd/010:15:260
11802995625,7cyclictest9-21ksoftirqd/012:10:120
11802995625,4cyclictest9-21ksoftirqd/007:45:190
26652550,1sleep10-21swapper/109:00:171
11802995526,6cyclictest9-21ksoftirqd/009:05:250
11802995525,6cyclictest9-21ksoftirqd/008:50:260
11802995525,6cyclictest9-21ksoftirqd/008:50:260
11802995525,3cyclictest9-21ksoftirqd/012:00:190
11802995523,4cyclictest9-21ksoftirqd/011:40:210
11802995522,4cyclictest9-21ksoftirqd/011:00:000
11802995521,4cyclictest9-21ksoftirqd/009:00:150
1180399544,8cyclictest241ktimersoftd/111:04:591
1180399543,7cyclictest7714-21sed10:15:181
1180399542,6cyclictest4176-21latency_hist10:10:001
1180299542,7cyclictest9-21ksoftirqd/008:25:000
11802995426,4cyclictest9-21ksoftirqd/010:25:180
11802995425,3cyclictest9-21ksoftirqd/011:30:170
11802995424,3cyclictest9-21ksoftirqd/008:10:160
11802995424,3cyclictest9-21ksoftirqd/008:10:150
11802995420,7cyclictest9-21ksoftirqd/010:35:240
11802995420,6cyclictest9-21ksoftirqd/010:45:180
1180399531,7cyclictest21496-21grep07:30:001
11802995326,4cyclictest9-21ksoftirqd/007:15:190
11802995326,3cyclictest9-21ksoftirqd/009:25:230
11802995326,3cyclictest9-21ksoftirqd/009:25:230
11802995323,4cyclictest9-21ksoftirqd/007:15:000
1180399523,6cyclictest241ktimersoftd/109:20:231
1180399522,6cyclictest241ktimersoftd/110:55:001
11802995224,3cyclictest9-21ksoftirqd/008:45:170
11802995222,8cyclictest9-21ksoftirqd/010:10:130
11802995221,3cyclictest9-21ksoftirqd/009:10:170
11802995218,4cyclictest9-21ksoftirqd/009:25:000
1180399512,7cyclictest20283-21irqrtprio11:45:181
1180399510,5cyclictest0-21swapper/108:05:131
1180299514,3cyclictest9-21ksoftirqd/007:25:010
11802995124,3cyclictest9-21ksoftirqd/010:05:140
11802995124,3cyclictest9-21ksoftirqd/008:45:000
11802995123,3cyclictest9-21ksoftirqd/008:35:230
11802995123,3cyclictest9-21ksoftirqd/007:55:280
11802995122,4cyclictest9-21ksoftirqd/012:15:190
11802995121,4cyclictest9-21ksoftirqd/011:10:180
11802995121,4cyclictest9-21ksoftirqd/008:25:180
11802995121,10cyclictest9-21ksoftirqd/011:45:180
11802995119,7cyclictest9-21ksoftirqd/009:30:110
1180399503,7cyclictest241ktimersoftd/110:00:171
1180399503,6cyclictest241ktimersoftd/111:10:111
1180399502,8cyclictest31724-21cpuspeed_turbos07:50:141
1180399502,7cyclictest15158-21fschecks_time11:35:151
1180399502,6cyclictest26633-21cat09:50:001
1180299506,3cyclictest9-21ksoftirqd/007:50:160
1180299505,3cyclictest121rcu_preempt08:55:180
1180299504,5cyclictest121rcu_preempt08:30:130
11802995022,8cyclictest9-21ksoftirqd/009:45:150
11802995019,4cyclictest9-21ksoftirqd/007:40:140
11802995018,4cyclictest9-21ksoftirqd/009:35:190
1180399494,6cyclictest241ktimersoftd/112:00:131
1180399493,7cyclictest241ktimersoftd/112:15:151
1180399493,7cyclictest241ktimersoftd/108:30:211
1180399493,6cyclictest22017-21tr10:45:131
1180399490,6cyclictest241ktimersoftd/109:35:141
1180299495,3cyclictest9-21ksoftirqd/011:20:220
11802994922,3cyclictest9-21ksoftirqd/007:25:130
11802994921,3cyclictest9-21ksoftirqd/012:40:010
11802994919,4cyclictest9-21ksoftirqd/008:15:140
1180299491,7cyclictest9-21ksoftirqd/011:10:000
11802994917,4cyclictest9-21ksoftirqd/007:30:160
11802994917,3cyclictest9-21ksoftirqd/012:10:010
1180399483,6cyclictest241ktimersoftd/107:45:141
1180399483,5cyclictest241ktimersoftd/107:40:131
1180399482,7cyclictest18686-21unixbench_multi10:35:261
1180399482,5cyclictest241ktimersoftd/111:15:141
1180399482,5cyclictest241ktimersoftd/110:10:131
1180399481,6cyclictest18908-21awk11:40:271
11802994818,7cyclictest9-21ksoftirqd/011:35:150
11802994818,4cyclictest9-21ksoftirqd/011:15:240
1180299481,4cyclictest9-21ksoftirqd/010:00:000
1180399473,7cyclictest241ktimersoftd/109:25:281
1180399473,7cyclictest241ktimersoftd/109:25:281
1180399473,5cyclictest241ktimersoftd/110:20:131
1180399471,6cyclictest28367-21switchtime10:55:261
1180399470,44cyclictest241ktimersoftd/108:00:141
1180299474,3cyclictest9-21ksoftirqd/007:35:250
11802994714,4cyclictest9-21ksoftirqd/009:40:150
253272460,3sleep325333-21irqrtprio11:55:183
1180399463,6cyclictest25-21ksoftirqd/110:44:531
1180399463,6cyclictest241ktimersoftd/108:40:191
1180399462,6cyclictest25522-21grep07:35:231
1180399461,6cyclictest15415-21missed_timers07:15:221
1180399460,7cyclictest241ktimersoftd/109:50:261
1180399460,7cyclictest241ktimersoftd/108:35:131
1180399460,5cyclictest241ktimersoftd/112:30:001
1180299465,3cyclictest9-21ksoftirqd/010:20:130
1180299465,2cyclictest9-21ksoftirqd/012:25:170
1180299462,3cyclictest121rcu_preempt08:05:000
11802994619,3cyclictest9-21ksoftirqd/010:00:140
11802994616,4cyclictest9-21ksoftirqd/011:55:130
11802994615,6cyclictest9-21ksoftirqd/009:20:000
11802994615,3cyclictest9-21ksoftirqd/010:30:120
1180299460,3cyclictest9-21ksoftirqd/011:30:000
11803994540,3cyclictest231rcuc/111:30:021
1180399453,6cyclictest15343-21cut10:30:181
1180399453,5cyclictest25-21ksoftirqd/107:14:161
1180399452,7cyclictest9523-21cpuspeed_turbos09:15:131
1180399450,5cyclictest241ktimersoftd/107:55:251
1180299454,2cyclictest121rcu_preempt12:20:120
1180299453,4cyclictest121rcu_preempt08:05:230
11802994515,9cyclictest9-21ksoftirqd/010:50:220
138491440,0ptp4l401ktimersoftd/312:08:393
11803994415,8cyclictest25-21ksoftirqd/111:59:161
1180399440,7cyclictest241ktimersoftd/112:05:211
1180399440,5cyclictest0-21swapper/112:10:121
11803994337,3cyclictest19019-21dump-pmu-power09:35:001
11803994318,3cyclictest25-21ksoftirqd/109:10:011
11803994316,7cyclictest25-21ksoftirqd/112:39:431
11803994313,9cyclictest25-21ksoftirqd/108:10:251
11803994313,9cyclictest25-21ksoftirqd/108:10:251
1150424333,4sleep30-21swapper/307:10:003
1180399424,5cyclictest241ktimersoftd/112:30:131
1180399423,5cyclictest241ktimersoftd/112:20:261
11805994135,4cyclictest11913-21cron11:29:593
11804994135,3cyclictest223-21systemd-journal12:10:002
11803994136,3cyclictest25-21ksoftirqd/111:29:591
1180399411,5cyclictest30057-21if_err_enp1s009:55:161
11804994034,3cyclictest33-21ksoftirqd/211:00:002
1180399402,5cyclictest25-21ksoftirqd/111:05:181
1180399401,5cyclictest21885-21/usr/sbin/munin07:30:131
1180399400,7cyclictest241ktimersoftd/110:25:131
1180399400,7cyclictest18424-21expr07:20:261
138491390,0ptp4l401ktimersoftd/309:54:483
11805993933,3cyclictest1319-21snmpd07:47:303
11803993935,3cyclictest25-21ksoftirqd/108:45:031
11803993814,7cyclictest25-21ksoftirqd/108:26:541
135191370,7getstats1180599cyclictest09:35:423
11805993731,4cyclictest41-21ksoftirqd/311:24:003
11804993731,4cyclictest33-21ksoftirqd/211:09:442
11804993731,4cyclictest33-21ksoftirqd/208:14:332
11804993731,4cyclictest33-21ksoftirqd/208:14:332
11804993730,4cyclictest33-21ksoftirqd/209:11:172
11803993733,3cyclictest25-21ksoftirqd/108:20:161
11803993733,2cyclictest231rcuc/109:42:021
11803993730,4cyclictest25-21ksoftirqd/111:51:071
1180399371,7cyclictest13521-21unixbench_multi08:15:271
138491360,0ptp4l401ktimersoftd/310:17:383
11805993630,4cyclictest41-21ksoftirqd/312:02:483
11805993630,4cyclictest41-21ksoftirqd/310:56:333
11805993630,4cyclictest41-21ksoftirqd/310:23:153
11805993630,4cyclictest41-21ksoftirqd/310:00:373
11804993632,2cyclictest33-21ksoftirqd/212:30:002
11804993630,4cyclictest33-21ksoftirqd/207:22:192
138491350,0ptp4l401ktimersoftd/310:45:163
138491350,0ptp4l401ktimersoftd/309:20:113
11805993529,4cyclictest41-21ksoftirqd/312:11:073
11805993529,4cyclictest41-21ksoftirqd/311:06:273
11805993529,4cyclictest41-21ksoftirqd/309:02:203
11805993529,4cyclictest41-21ksoftirqd/308:59:233
11805993529,4cyclictest41-21ksoftirqd/308:35:043
11805993529,4cyclictest41-21ksoftirqd/308:29:393
11805993529,4cyclictest41-21ksoftirqd/307:54:443
11805993529,4cyclictest41-21ksoftirqd/307:44:253
11805993529,4cyclictest41-21ksoftirqd/307:21:103
11804993530,3cyclictest33-21ksoftirqd/211:40:582
11804993530,3cyclictest33-21ksoftirqd/208:30:012
11804993529,4cyclictest33-21ksoftirqd/212:36:412
11804993529,4cyclictest33-21ksoftirqd/210:53:552
11804993529,4cyclictest33-21ksoftirqd/209:42:542
11804993529,4cyclictest33-21ksoftirqd/209:22:162
11804993529,4cyclictest33-21ksoftirqd/208:47:302
11804993529,4cyclictest33-21ksoftirqd/207:52:552
11804993529,4cyclictest33-21ksoftirqd/207:47:292
11804993529,4cyclictest33-21ksoftirqd/207:43:162
11804993528,4cyclictest33-21ksoftirqd/212:14:172
11804993528,4cyclictest33-21ksoftirqd/208:37:032
1180399353,7cyclictest241ktimersoftd/109:10:181
138491340,0ptp4l401ktimersoftd/310:25:023
11805993429,3cyclictest41-21ksoftirqd/312:23:213
11805993428,4cyclictest41-21ksoftirqd/309:48:093
11805993428,4cyclictest41-21ksoftirqd/308:47:193
11805993428,4cyclictest41-21ksoftirqd/308:14:143
11805993428,4cyclictest41-21ksoftirqd/308:14:143
11805993428,4cyclictest41-21ksoftirqd/307:57:573
11805993428,4cyclictest41-21ksoftirqd/307:35:063
11805993428,4cyclictest41-21ksoftirqd/307:34:063
11805993427,5cyclictest41-21ksoftirqd/309:09:063
11804993429,3cyclictest33-21ksoftirqd/210:21:052
11804993429,3cyclictest33-21ksoftirqd/210:13:132
11804993428,4cyclictest33-21ksoftirqd/211:11:082
11805993327,4cyclictest41-21ksoftirqd/312:38:343
11805993327,4cyclictest41-21ksoftirqd/310:14:213
11805993327,4cyclictest41-21ksoftirqd/309:32:083
11805993327,4cyclictest41-21ksoftirqd/309:15:403
11805993327,4cyclictest41-21ksoftirqd/307:19:263
11805993326,5cyclictest41-21ksoftirqd/311:04:593
11804993328,3cyclictest33-21ksoftirqd/211:50:382
11804993328,3cyclictest33-21ksoftirqd/210:27:392
11804993328,3cyclictest33-21ksoftirqd/210:15:152
11804993328,3cyclictest33-21ksoftirqd/209:37:332
11804993327,4cyclictest33-21ksoftirqd/211:03:142
11804993327,4cyclictest33-21ksoftirqd/210:07:422
11804993326,4cyclictest33-21ksoftirqd/207:34:212
138491320,0ptp4l401ktimersoftd/312:30:233
11805993227,3cyclictest41-21ksoftirqd/311:45:073
11805993227,3cyclictest41-21ksoftirqd/311:44:433
11805993227,3cyclictest41-21ksoftirqd/308:22:163
11805993226,4cyclictest41-21ksoftirqd/308:33:393
11805993226,4cyclictest41-21ksoftirqd/307:29:453
11804993227,3cyclictest33-21ksoftirqd/211:23:572
11804993227,3cyclictest33-21ksoftirqd/210:42:142
11804993227,3cyclictest33-21ksoftirqd/207:15:482
11804993226,4cyclictest33-21ksoftirqd/212:34:162
11804993226,4cyclictest33-21ksoftirqd/211:37:002
11804993226,4cyclictest33-21ksoftirqd/207:57:282
138491310,9ptp4l401ktimersoftd/308:00:043
11805993126,3cyclictest41-21ksoftirqd/310:50:113
11805993126,3cyclictest41-21ksoftirqd/308:45:003
11805993125,4cyclictest41-21ksoftirqd/309:44:283
11805993125,4cyclictest41-21ksoftirqd/309:11:223
11805993125,4cyclictest41-21ksoftirqd/308:17:033
11805993125,4cyclictest41-21ksoftirqd/308:05:113
11804993126,3cyclictest33-21ksoftirqd/212:23:322
11804993126,3cyclictest33-21ksoftirqd/209:34:592
11804993125,4cyclictest33-21ksoftirqd/209:52:572
11804993125,4cyclictest33-21ksoftirqd/208:07:162
11804993125,3cyclictest33-21ksoftirqd/209:00:002
11804993118,10cyclictest33-21ksoftirqd/209:55:202
1180499311,2cyclictest121rcu_preempt08:15:192
138491300,0ptp4l401ktimersoftd/312:27:453
138491300,0ptp4l401ktimersoftd/311:12:343
138491300,0ptp4l401ktimersoftd/310:39:183
11805993025,3cyclictest41-21ksoftirqd/311:50:423
11805993025,3cyclictest41-21ksoftirqd/309:29:213
11805993025,3cyclictest41-21ksoftirqd/309:29:213
11805993024,4cyclictest41-21ksoftirqd/311:38:533
11805993024,4cyclictest41-21ksoftirqd/310:31:463
11804993025,3cyclictest33-21ksoftirqd/211:50:002
11804993025,3cyclictest33-21ksoftirqd/211:19:442
11804993025,3cyclictest33-21ksoftirqd/209:29:202
11804993025,3cyclictest33-21ksoftirqd/209:29:202
11804993025,3cyclictest33-21ksoftirqd/208:40:292
11804993025,3cyclictest33-21ksoftirqd/208:30:152
11804993025,3cyclictest33-21ksoftirqd/207:35:182
11804993024,4cyclictest33-21ksoftirqd/212:17:142
11804993024,4cyclictest33-21ksoftirqd/212:00:342
11804993024,4cyclictest33-21ksoftirqd/210:36:422
11804993024,4cyclictest33-21ksoftirqd/208:51:262
11804993024,4cyclictest33-21ksoftirqd/208:51:262
11804993024,4cyclictest33-21ksoftirqd/208:20:392
11805992924,3cyclictest41-21ksoftirqd/309:57:523
11805992924,3cyclictest41-21ksoftirqd/308:55:003
11805992924,3cyclictest41-21ksoftirqd/308:55:003
11804992923,4cyclictest33-21ksoftirqd/210:33:202
11804992923,4cyclictest33-21ksoftirqd/210:03:492
11804992919,9cyclictest33-21ksoftirqd/208:00:242
11805992823,3cyclictest41-21ksoftirqd/311:15:033
11804992824,3cyclictest33-21ksoftirqd/210:45:192
11804992823,3cyclictest33-21ksoftirqd/207:28:082
11804992823,3cyclictest33-21ksoftirqd/207:11:492
11805992723,3cyclictest41-21ksoftirqd/310:05:213
11805992722,3cyclictest41-21ksoftirqd/312:16:433
11804992722,3cyclictest33-21ksoftirqd/209:15:152
11804992621,3cyclictest33-21ksoftirqd/209:09:032
11804992621,3cyclictest33-21ksoftirqd/209:00:102
11804992419,3cyclictest33-21ksoftirqd/211:55:132
11804992419,3cyclictest33-21ksoftirqd/209:49:522
11804991914,3cyclictest13336-21needreboot11:30:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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