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2026-07-23 - 13:12
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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 rackdslot3.osadl.org (updated Thu Jul 23, 2026 00:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
176582218157,51sleep00-21swapper/019:08:080
176982204170,23sleep30-21swapper/319:08:383
176972204171,22sleep20-21swapper/219:08:382
176642202168,22sleep10-21swapper/119:08:121
1780428362,11sleep00-21swapper/019:10:010
238662590,2sleep10-21swapper/100:00:011
156182570,2sleep00-21swapper/020:10:220
18274995331,2cyclictest9-21ksoftirqd/000:20:180
139391530,1ptp4l401ktimersoftd/321:26:183
1827699501,46cyclictest8305-21awk23:25:231
18274995015,6cyclictest9-21ksoftirqd/020:59:590
1827699470,45cyclictest0-21swapper/120:58:341
18274994718,7cyclictest9-21ksoftirqd/019:25:160
18274994718,6cyclictest9-21ksoftirqd/020:30:200
18278994628,15cyclictest33-21ksoftirqd/219:55:002
18274994616,6cyclictest9-21ksoftirqd/023:30:260
18278994531,12cyclictest33-21ksoftirqd/222:40:002
1827499459,6cyclictest9-21ksoftirqd/020:40:270
1827499459,5cyclictest9-21ksoftirqd/020:05:280
18274994515,4cyclictest9-21ksoftirqd/023:13:020
18274994515,4cyclictest9-21ksoftirqd/022:11:080
18274994514,5cyclictest9-21ksoftirqd/000:34:220
18274994514,3cyclictest9-21ksoftirqd/021:50:470
18278994440,2cyclictest33-21ksoftirqd/219:20:002
18274994414,4cyclictest9-21ksoftirqd/000:17:290
139391440,0ptp4l401ktimersoftd/322:45:283
139391440,0ptp4l401ktimersoftd/321:41:443
18279994335,5cyclictest207-21systemd-journal22:45:003
18278994338,3cyclictest10468-21cron21:10:002
1827499434,4cyclictest9-21ksoftirqd/022:45:250
18274994314,4cyclictest9-21ksoftirqd/022:21:440
139391430,3ptp4l1827999cyclictest00:09:383
139391430,0ptp4l401ktimersoftd/319:35:153
139391430,0ptp4l401ktimersoftd/319:20:183
139391430,0ptp4l401ktimersoftd/319:20:183
139391430,0ptp4l401ktimersoftd/300:18:563
18278994227,12cyclictest33-21ksoftirqd/222:05:002
18278994224,15cyclictest33-21ksoftirqd/223:40:002
1827499429,3cyclictest9-21ksoftirqd/019:40:270
18274994234,5cyclictest6896-21cron23:25:000
18274994213,4cyclictest9-21ksoftirqd/021:31:440
18274994212,4cyclictest9-21ksoftirqd/020:38:170
18274994212,4cyclictest9-21ksoftirqd/000:13:390
139391420,0ptp4l401ktimersoftd/323:22:493
139391420,0ptp4l401ktimersoftd/320:23:263
1827999411,38cyclictest29742-21cron23:04:593
1827499415,4cyclictest9-21ksoftirqd/020:25:170
18274994137,2cyclictest32388-21latency_hist19:40:010
18274994115,6cyclictest9-21ksoftirqd/021:15:020
18274994114,3cyclictest9-21ksoftirqd/019:30:150
18274994112,3cyclictest9-21ksoftirqd/023:44:340
139391410,0ptp4l401ktimersoftd/323:10:053
18278994029,8cyclictest33-21ksoftirqd/221:15:172
18278994024,5cyclictest33-21ksoftirqd/220:37:492
18274994034,3cyclictest9-21ksoftirqd/000:40:000
1827499403,3cyclictest121rcu_preempt19:20:240
1827499403,3cyclictest121rcu_preempt19:20:240
1827499402,2cyclictest121rcu_preempt21:45:220
18274994013,4cyclictest9-21ksoftirqd/023:53:130
1827499401,2cyclictest9-21ksoftirqd/022:29:590
1827499400,2cyclictest121rcu_preempt21:25:390
1827899396,3cyclictest33-21ksoftirqd/223:10:162
18278993934,3cyclictest16657-21idleruntime-cro20:15:012
1827499397,7cyclictest9-21ksoftirqd/022:05:010
1827499396,4cyclictest9-21ksoftirqd/021:20:570
18274993934,2cyclictest9-21ksoftirqd/020:20:010
18274993933,3cyclictest9-21ksoftirqd/019:20:000
18274993911,3cyclictest9-21ksoftirqd/000:07:290
139391390,1ptp4l401ktimersoftd/322:12:173
139391390,1ptp4l401ktimersoftd/321:37:343
139391390,0ptp4l401ktimersoftd/320:40:133
18278993834,3cyclictest33-21ksoftirqd/222:55:002
18278993834,2cyclictest33-21ksoftirqd/221:34:592
18278993833,3cyclictest33-21ksoftirqd/223:25:142
18278993833,3cyclictest33-21ksoftirqd/222:10:002
18278993832,3cyclictest33-21ksoftirqd/220:15:132
18276993810,27cyclictest0-21swapper/123:40:231
1827499386,3cyclictest9-21ksoftirqd/021:59:260
18274993833,3cyclictest9-21ksoftirqd/019:50:120
18274993832,3cyclictest9-21ksoftirqd/019:55:190
1827499382,6cyclictest9-21ksoftirqd/023:25:230
1827499381,5cyclictest9-21ksoftirqd/023:45:200
139391380,0ptp4l401ktimersoftd/322:15:253
18279993732,3cyclictest41-21ksoftirqd/320:01:253
18279993731,4cyclictest41-21ksoftirqd/323:58:063
18279993731,4cyclictest41-21ksoftirqd/323:53:573
18278993733,2cyclictest33-21ksoftirqd/220:20:162
18278993732,3cyclictest14001-21cron22:25:012
18278993731,4cyclictest33-21ksoftirqd/223:20:002
18278993730,4cyclictest33-21ksoftirqd/220:40:272
1827699379,26cyclictest0-21swapper/123:05:231
18276993731,4cyclictest25-21ksoftirqd/100:06:061
1827499375,3cyclictest9-21ksoftirqd/021:41:380
1827499374,6cyclictest9-21ksoftirqd/022:55:130
18274993733,2cyclictest9-21ksoftirqd/023:20:000
18274993732,3cyclictest9-21ksoftirqd/021:40:000
18274993731,3cyclictest9-21ksoftirqd/022:20:000
18274993726,3cyclictest9-21ksoftirqd/021:05:270
1827499370,2cyclictest121rcu_preempt21:10:240
18279993631,3cyclictest41-21ksoftirqd/320:32:153
18279993630,4cyclictest41-21ksoftirqd/320:47:593
18278993631,3cyclictest33-21ksoftirqd/220:55:182
18278993631,3cyclictest33-21ksoftirqd/220:50:012
18278993631,3cyclictest26178-21latency_hist00:05:012
18278993630,3cyclictest16865-21wc23:45:132
18278993625,9cyclictest33-21ksoftirqd/221:10:262
18278993622,5cyclictest33-21ksoftirqd/221:04:052
1827699363,32cyclictest0-21swapper/122:25:331
18276993631,3cyclictest25-21ksoftirqd/122:05:121
18276993631,3cyclictest25-21ksoftirqd/121:50:101
18276993630,4cyclictest25-21ksoftirqd/122:47:071
18276993630,4cyclictest25-21ksoftirqd/122:42:271
18276993630,4cyclictest25-21ksoftirqd/120:19:081
18274993632,3cyclictest9-21ksoftirqd/020:50:200
18274993632,2cyclictest9-21ksoftirqd/022:45:000
18274993631,3cyclictest9-21ksoftirqd/022:50:190
18274993631,3cyclictest9-21ksoftirqd/022:40:000
18274993631,2cyclictest9-21ksoftirqd/021:00:120
18274993624,3cyclictest9-21ksoftirqd/023:05:140
1827499361,2cyclictest121rcu_preempt00:25:190
18274993611,3cyclictest9-21ksoftirqd/020:25:000
1827499360,2cyclictest121rcu_preempt22:00:260
1827499360,2cyclictest121rcu_preempt20:50:010
18279993530,3cyclictest41-21ksoftirqd/322:24:193
18279993529,3cyclictest41-21ksoftirqd/320:25:123
1827899356,3cyclictest121rcu_preempt19:10:172
1827899355,3cyclictest121rcu_preempt20:30:272
1827899354,3cyclictest121rcu_preempt20:00:142
1827899353,3cyclictest33-21ksoftirqd/223:05:252
18278993531,3cyclictest33-21ksoftirqd/220:06:272
18278993531,2cyclictest33-21ksoftirqd/222:55:132
18278993531,2cyclictest33-21ksoftirqd/222:45:242
18278993531,2cyclictest33-21ksoftirqd/221:20:232
18278993530,3cyclictest33-21ksoftirqd/219:30:182
18278993529,4cyclictest33-21ksoftirqd/223:30:292
18278993529,4cyclictest33-21ksoftirqd/223:21:302
18278993529,4cyclictest33-21ksoftirqd/222:41:352
18278993529,4cyclictest33-21ksoftirqd/220:25:312
18278993529,4cyclictest33-21ksoftirqd/219:37:302
18278993529,3cyclictest33-21ksoftirqd/222:35:002
18276993529,4cyclictest25-21ksoftirqd/123:19:581
18276993529,4cyclictest25-21ksoftirqd/122:13:171
18276993529,4cyclictest25-21ksoftirqd/121:25:081
18276993529,4cyclictest25-21ksoftirqd/120:00:151
18276993529,4cyclictest25-21ksoftirqd/119:18:111
18276993510,4cyclictest19008-21ls23:50:001
1827699350,2cyclictest121rcu_preempt20:50:001
18274993532,2cyclictest9-21ksoftirqd/023:35:140
18274993531,2cyclictest9-21ksoftirqd/019:50:010
18274993530,3cyclictest9-21ksoftirqd/023:55:140
18274993528,4cyclictest9-21ksoftirqd/023:02:240
18274993521,4cyclictest9-21ksoftirqd/022:35:000
1827499351,3cyclictest121rcu_preempt20:00:140
18279993429,3cyclictest41-21ksoftirqd/323:15:383
18279993429,3cyclictest41-21ksoftirqd/322:53:363
18279993429,3cyclictest41-21ksoftirqd/321:48:323
18279993428,4cyclictest41-21ksoftirqd/322:01:253
18279993428,4cyclictest41-21ksoftirqd/321:14:143
18279993428,4cyclictest41-21ksoftirqd/320:51:483
1827899346,7cyclictest33-21ksoftirqd/200:30:262
1827899344,4cyclictest33-21ksoftirqd/221:40:132
18278993430,2cyclictest33-21ksoftirqd/221:25:242
18278993430,2cyclictest33-21ksoftirqd/219:20:242
18278993430,2cyclictest33-21ksoftirqd/219:20:242
18278993430,2cyclictest33-21ksoftirqd/200:20:132
18278993430,2cyclictest33-21ksoftirqd/200:15:122
18278993429,3cyclictest33-21ksoftirqd/223:50:112
18278993429,3cyclictest33-21ksoftirqd/221:35:122
18278993429,3cyclictest33-21ksoftirqd/219:45:072
18278993429,3cyclictest33-21ksoftirqd/200:25:122
18278993429,2cyclictest33-21ksoftirqd/200:35:262
18278993428,4cyclictest33-21ksoftirqd/221:52:132
18278993423,9cyclictest33-21ksoftirqd/220:50:272
1827899340,2cyclictest121rcu_preempt21:45:202
1827699346,26cyclictest0-21swapper/100:30:231
18276993429,3cyclictest25-21ksoftirqd/120:38:541
18276993428,4cyclictest25-21ksoftirqd/121:46:141
18276993428,4cyclictest25-21ksoftirqd/121:32:141
18276993428,4cyclictest25-21ksoftirqd/121:08:481
18276993428,4cyclictest25-21ksoftirqd/120:44:201
18276993428,4cyclictest25-21ksoftirqd/119:39:331
18276993413,3cyclictest11651-21turbostat.cron23:35:001
1827699341,29cyclictest22815-21apt-get22:50:131
18276993411,3cyclictest17868-21date21:25:001
18274993431,2cyclictest9-21ksoftirqd/000:00:190
18279993328,3cyclictest41-21ksoftirqd/300:29:473
18279993328,3cyclictest41-21ksoftirqd/300:01:473
18278993329,3cyclictest33-21ksoftirqd/222:15:002
18278993329,2cyclictest33-21ksoftirqd/223:40:172
18278993329,2cyclictest33-21ksoftirqd/219:40:152
18278993328,3cyclictest33-21ksoftirqd/223:56:042
18278993327,4cyclictest33-21ksoftirqd/222:25:382
18278993327,4cyclictest33-21ksoftirqd/200:13:342
1827899332,3cyclictest121rcu_preempt23:00:212
18276993328,3cyclictest25-21ksoftirqd/119:40:111
18276993328,3cyclictest25-21ksoftirqd/119:29:431
18276993327,4cyclictest25-21ksoftirqd/123:52:021
18276993327,4cyclictest25-21ksoftirqd/122:20:031
18276993327,4cyclictest25-21ksoftirqd/119:58:031
18276993327,4cyclictest25-21ksoftirqd/100:03:381
18276993310,3cyclictest27382-21latency_hist22:59:591
18279993227,3cyclictest41-21ksoftirqd/321:56:273
18279993227,3cyclictest41-21ksoftirqd/321:31:533
18279993226,4cyclictest41-21ksoftirqd/320:09:443
1827899324,3cyclictest121rcu_preempt19:55:192
18278993229,2cyclictest33-21ksoftirqd/221:55:162
18278993226,4cyclictest33-21ksoftirqd/200:09:522
1827699329,4cyclictest24278-21cat21:35:271
18276993226,4cyclictest25-21ksoftirqd/122:16:381
18276993226,4cyclictest25-21ksoftirqd/121:16:051
18276993226,4cyclictest25-21ksoftirqd/120:32:131
18276993226,4cyclictest25-21ksoftirqd/120:20:501
18276993226,4cyclictest25-21ksoftirqd/119:51:491
18276993211,3cyclictest2943-21expr19:45:161
139391320,0ptp4l401ktimersoftd/322:26:503
139391320,0ptp4l401ktimersoftd/319:50:213
139391320,0ptp4l401ktimersoftd/319:11:143
18279993126,3cyclictest41-21ksoftirqd/319:46:073
18279993125,4cyclictest41-21ksoftirqd/321:20:523
18278993127,3cyclictest33-21ksoftirqd/222:20:012
18276993126,3cyclictest25-21ksoftirqd/100:21:421
18276993125,4cyclictest25-21ksoftirqd/122:33:191
18276993125,4cyclictest25-21ksoftirqd/121:12:561
18276993125,4cyclictest25-21ksoftirqd/120:27:281
1827699311,27cyclictest2627-21diskstats00:25:131
1827699311,27cyclictest0-21swapper/123:20:131
18276993110,3cyclictest394-21sh21:55:181
139391310,8ptp4l0-21swapper/300:10:563
18279993025,3cyclictest41-21ksoftirqd/323:47:103
18279993025,3cyclictest41-21ksoftirqd/322:30:123
18279993025,3cyclictest41-21ksoftirqd/321:09:103
18279993024,4cyclictest41-21ksoftirqd/321:53:583
18279993024,4cyclictest41-21ksoftirqd/300:38:423
18278993027,2cyclictest33-21ksoftirqd/219:25:132
1827699309,3cyclictest14313-21latency_hist20:10:001
1827699307,21cyclictest0-21swapper/122:35:141
18276993025,3cyclictest25-21ksoftirqd/121:04:011
18276993024,4cyclictest25-21ksoftirqd/123:04:401
18276993024,4cyclictest25-21ksoftirqd/100:39:401
139391300,0ptp4l401ktimersoftd/323:25:273
139391300,0ptp4l401ktimersoftd/323:08:583
18279992924,3cyclictest41-21ksoftirqd/323:35:533
18279992923,4cyclictest41-21ksoftirqd/319:40:113
1827699299,3cyclictest18356-21cpu19:10:121
1827699297,20cyclictest0-21swapper/100:15:051
18276992912,2cyclictest27311-21sshd21:44:251
18276992911,3cyclictest1317-21runrttasks20:51:101
1827699290,27cyclictest0-21swapper/123:39:211
1827699290,27cyclictest0-21swapper/123:13:131
1827699290,27cyclictest0-21swapper/100:10:171
139391290,0ptp4l401ktimersoftd/322:36:443
139391290,0ptp4l401ktimersoftd/320:36:423
18279992823,3cyclictest41-21ksoftirqd/322:06:223
18279992823,3cyclictest41-21ksoftirqd/320:17:293
18279992823,3cyclictest41-21ksoftirqd/319:18:253
18279992822,4cyclictest41-21ksoftirqd/322:57:443
18279992822,4cyclictest41-21ksoftirqd/319:32:453
18279992822,3cyclictest41-21ksoftirqd/323:42:383
18276992823,3cyclictest25-21ksoftirqd/120:11:161
18276992823,3cyclictest25-21ksoftirqd/119:20:081
18276992823,3cyclictest25-21ksoftirqd/119:20:081
18279992721,4cyclictest41-21ksoftirqd/300:31:003
18276992721,4cyclictest25-21ksoftirqd/119:30:341
139391270,7ptp4l401ktimersoftd/321:16:563
18279992621,3cyclictest41-21ksoftirqd/320:57:333
18279992621,3cyclictest41-21ksoftirqd/320:11:233
18279992621,3cyclictest41-21ksoftirqd/319:28:543
18279992519,4cyclictest41-21ksoftirqd/319:59:213
139391250,0ptp4l401ktimersoftd/300:20:193
139391240,0ptp4l401ktimersoftd/323:30:123
139391240,0ptp4l401ktimersoftd/321:00:213
18276992216,4cyclictest25-21ksoftirqd/122:04:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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