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2026-03-22 - 10:51
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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 rackeslot2.osadl.org (updated Sun Mar 22, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
339056621040,2sleep30-21swapper/323:56:283
32728862980,1sleep13272888-21rm22:46:491
33189212940,2sleep10-21swapper/123:15:021
33557542370,0sleep03355757-21cut23:36:290
2952649993315,4cyclictest3397077-40gzip00:00:010
295264999300,1cyclictest0-21swapper/021:11:230
2952649992916,9cyclictest3194010-21timerandwakeup22:01:370
2952649992720,6cyclictest3015473-21latency_hist20:00:000
2952649992714,9cyclictest0-21swapper/022:45:020
295264999271,23cyclictest3222429-21munin-run22:20:010
2952650992519,2cyclictest134050irq/121-eno100:21:371
2952649992519,5cyclictest3327317-21idleruntime-cro23:20:010
295264999251,1cyclictest0-21swapper/000:26:230
32601992240,2sleep30-21swapper/322:41:303
2952649992412,11cyclictest3452468-21kthreadcore00:31:300
32224942230,2sleep30-21swapper/322:20:013
2952650992311,8cyclictest257-21systemd-journal22:20:001
295264999231,3cyclictest3224322-21/usr/sbin/munin22:21:290
2952650992215,3cyclictest3224750-21kthreadcore22:21:301
2952650992215,3cyclictest1996-21runrttasks23:48:401
295264999218,8cyclictest0-21swapper/021:40:020
295264999216,9cyclictest0-21swapper/021:31:220
295264999211,9cyclictest1290-21dbus-daemon23:50:020
2952649992111,9cyclictest3155445-21kthreadcore21:41:300
295264999211,16cyclictest0-21swapper/000:09:310
2952650992017,2cyclictest1-21systemd00:00:021
2952650992013,3cyclictest3277030-21irqcore22:51:301
295264999208,7cyclictest0-21swapper/021:16:260
2952649992014,5cyclictest3371080-21munin-plugin-st23:45:010
2952649992011,8cyclictest3100413-21diskmemload23:55:010
295264999201,17cyclictest3292233-21systemctl23:00:000
2952649992010,9cyclictest0-21swapper/022:11:300
2952650991915,3cyclictest2959520-21kthreadcore19:15:021
2952650991914,4cyclictest3196828-21ssh22:05:261
2952650991913,2cyclictest3313147-21kthreadcore23:11:281
295264999199,6cyclictest3100413-21diskmemload23:10:220
295264999197,7cyclictest2997699-21/usr/sbin/munin19:46:280
295264999197,7cyclictest0-21swapper/022:31:380
295264999196,8cyclictest0-21swapper/022:30:010
295264999195,9cyclictest3051679-21sshd20:28:560
295264999194,8cyclictest0-21swapper/021:46:240
295264999193,10cyclictest0-21swapper/022:06:230
295264999191,7cyclictest3119199-21cpuspeed21:21:250
2952649991915,3cyclictest1428-21gdbus21:58:530
2952649991915,3cyclictest1428-21gdbus21:58:530
2952649991913,5cyclictest3431719-21sh00:20:000
2952649991913,5cyclictest3257299-21sh22:40:000
2952649991913,5cyclictest3091502-21kthreadcore21:01:300
2952649991913,5cyclictest3033695-21munin-plugin-st20:15:010
2952649991913,5cyclictest2969865-21kthreadcore19:21:300
2952649991913,5cyclictest1326-21systemd-logind19:10:010
2952649991913,4cyclictest2958942-21munin-run19:15:010
2952649991910,5cyclictest3100413-21diskmemload23:29:070
2649091190,2phc2sys0-21swapper/322:04:003
2952651991815,1cyclictest0-21swapper/220:00:002
295265099184,2cyclictest134050irq/121-eno121:10:001
2952650991815,2cyclictest3457979-21latency_hist00:35:021
2952650991815,2cyclictest3384032-21kthreadcore23:51:311
2952650991815,2cyclictest3344687-21grep23:30:001
2952650991815,2cyclictest1-21systemd21:40:021
2952650991811,2cyclictest0-21swapper/121:31:291
295264999189,8cyclictest3379836-21kworker/u16:3-events_unbound00:21:340
295264999189,8cyclictest0-21swapper/023:06:240
295264999188,9cyclictest0-21swapper/023:30:560
295264999188,9cyclictest0-21swapper/022:51:310
295264999187,4cyclictest0-21swapper/000:11:250
295264999183,8cyclictest3466367-21awk00:40:000
295264999183,10cyclictest0-21swapper/020:41:330
2952649991813,4cyclictest3301221-21munin-plugin-st23:05:010
2952649991813,4cyclictest3088563-21cut21:00:020
2952649991813,4cyclictest2974806-21kthreadcore19:26:300
2952649991813,4cyclictest0-21swapper/020:20:010
2952649991810,4cyclictest191rcu_preempt21:25:020
295264999180,13cyclictest2960965-21tr19:15:030
295264999180,12cyclictest3062490-21cut20:36:320
2649091180,2phc2sys0-21swapper/321:54:463
2649091180,2phc2sys0-21swapper/300:34:443
295265199178,6cyclictest33734382sleep223:46:302
2952651991714,1cyclictest0-21swapper/223:55:012
2952651991714,1cyclictest0-21swapper/223:20:012
295265099177,3cyclictest501rcuop/223:30:111
2952650991715,1cyclictest2966991-21cut19:20:011
2952650991714,2cyclictest3187852-21latency_hist22:00:011
2952650991714,2cyclictest3187852-21latency_hist22:00:011
2952650991714,2cyclictest1326-21systemd-logind19:35:011
2952650991713,3cyclictest3243878-21kthreadcore22:31:311
2952650991713,3cyclictest3132964-21timerandwakeup21:26:361
2952650991713,2cyclictest0-21swapper/123:40:011
2952650991713,1cyclictest501rcuop/200:06:261
295264999179,5cyclictest3100413-21diskmemload21:50:300
295264999174,8cyclictest0-21swapper/020:51:230
295264999174,6cyclictest2979495-21/usr/sbin/munin19:31:250
2952649991712,4cyclictest3274118-21kworker/u16:0-writeback23:21:460
2952649991712,4cyclictest29021-21rtkit-daemon20:48:510
2952649991711,5cyclictest3405933-21latency_hist00:05:010
2952649991711,5cyclictest3097092-21kthreadcore21:06:320
2952649991711,5cyclictest3040221-21aten_repower_po20:21:230
2952649991711,5cyclictest3024705-21kthreadcore20:06:320
2952649991711,5cyclictest2991660-21aten_repower_cu19:41:230
2952649991711,4cyclictest0-21swapper/020:05:000
295264999171,11cyclictest3266685-21taskset22:45:150
2649091170,2phc2sys0-21swapper/323:23:323
2649091170,1phc2sys0-21swapper/323:32:503
2952651991613,1cyclictest0-21swapper/221:50:022
2952651991613,1cyclictest0-21swapper/219:13:422
2952651991611,2cyclictest0-21swapper/221:37:412
295265099169,3cyclictest2991608-21/usr/sbin/munin19:41:331
295265099168,4cyclictest3237190-21/usr/sbin/munin22:26:331
295265099165,2cyclictest134050irq/121-eno121:21:301
2952650991613,2cyclictest4114978-21snmpd20:50:011
2952650991613,2cyclictest3330441-21kthreadcore23:21:311
2952650991613,2cyclictest3266197-21latency_hist22:45:001
2952650991613,2cyclictest1326-21systemd-logind20:20:021
2952650991613,2cyclictest1288-1atopacctd00:26:251
2952650991612,3cyclictest3306391-21kthreadcore23:06:301
2952650991611,4cyclictest2952647-21cyclictest22:01:291
295264999164,7cyclictest0-21swapper/019:52:560
295264999161,10cyclictest2991293-21munin-run19:40:000
295264999160,11cyclictest3052322-21aten_repower_po20:31:240
2649091160,2phc2sys0-21swapper/321:01:243
2649091160,2phc2sys0-21swapper/300:17:573
295265199159,3cyclictest3336283-21chrt23:25:012
295265199159,2cyclictest0-21swapper/223:01:172
2952651991512,1cyclictest0-21swapper/222:39:142
2952651991512,1cyclictest0-21swapper/222:23:142
2952651991512,1cyclictest0-21swapper/221:25:022
2952651991512,1cyclictest0-21swapper/221:20:012
2952651991512,1cyclictest0-21swapper/200:30:002
295265099159,3cyclictest601rcuop/323:41:011
295265099157,4cyclictest0-21swapper/100:20:001
295265099157,3cyclictest501rcuop/200:11:191
295265099157,1cyclictest191rcu_preempt22:39:311
295265099156,3cyclictest501rcuop/221:49:231
295265099155,6cyclictest0-21swapper/121:51:231
2952650991512,2cyclictest3401999-21kthreadcore00:01:301
2952650991512,2cyclictest3206387-21cpuspeed_turbos22:11:251
2952650991512,2cyclictest3070188-21apt-key20:45:011
2952650991512,2cyclictest3052592-21cstates20:31:251
2952650991512,2cyclictest257-21systemd-journal21:13:451
2952650991512,2cyclictest0-21swapper/123:00:021
2952650991512,1cyclictest501rcuop/220:50:311
2952650991511,3cyclictest3379836-21kworker/u16:3+nfsiod00:36:581
2952650991511,3cyclictest3088520-21kworker/u16:2+nfsiod21:15:591
2952650991511,3cyclictest3030748-21kthreadcore20:11:311
2952650991510,4cyclictest3003382-21perf19:50:001
2952650991510,1cyclictest36-21ksoftirqd/119:56:301
2649091154,2phc2sys0-21swapper/322:27:283
2649091150,2phc2sys0-21swapper/323:52:303
2649091150,2phc2sys0-21swapper/323:07:363
2649091150,2phc2sys0-21swapper/321:24:473
295265199149,3cyclictest3088405-21chrt21:00:012
295265199149,2cyclictest31877542sleep222:00:022
295265199148,3cyclictest0-21swapper/200:21:242
295265199143,8cyclictest32335622sleep222:26:312
295265199142,7cyclictest0-21swapper/221:30:012
295265199141,3cyclictest33702832sleep223:43:542
2952651991412,1cyclictest0-21swapper/222:11:242
2952651991411,1cyclictest0-21swapper/223:56:362
2952651991411,1cyclictest0-21swapper/223:13:072
2952651991411,1cyclictest0-21swapper/223:06:252
2952651991411,1cyclictest0-21swapper/222:55:442
2952651991411,1cyclictest0-21swapper/222:51:242
2952651991411,1cyclictest0-21swapper/222:47:052
2952651991411,1cyclictest0-21swapper/222:41:062
2952651991411,1cyclictest0-21swapper/222:19:502
2952651991411,1cyclictest0-21swapper/222:01:372
2952651991411,1cyclictest0-21swapper/221:40:592
2952651991411,1cyclictest0-21swapper/221:31:242
2952651991411,1cyclictest0-21swapper/220:45:012
2952651991411,1cyclictest0-21swapper/220:36:292
2952651991411,1cyclictest0-21swapper/219:35:012
2952651991411,1cyclictest0-21swapper/200:15:002
2952651991411,1cyclictest0-21swapper/200:00:222
2952651991410,2cyclictest0-21swapper/221:06:342
295265099146,3cyclictest501rcuop/220:27:161
295265099146,3cyclictest501rcuop/219:25:201
295265099144,4cyclictest3088896-21aten2.4-expect21:01:241
2952650991412,1cyclictest3003796-21apt19:51:231
2952650991412,1cyclictest2952647-21cyclictest20:36:361
2952650991411,2cyclictest3040805-21gltestperf20:21:261
2952650991411,2cyclictest3018984-21kthreadcore20:01:321
2952650991411,2cyclictest2972222-21phc2sys-jitter19:21:331
2952650991410,3cyclictest3023958-21kthreadcore20:06:311
2649091148,2phc2sys0-21swapper/319:16:353
2649091141,2phc2sys0-21swapper/322:58:343
2649091140,6phc2sys0-21swapper/323:41:373
2649091140,3phc2sys0-21swapper/323:12:353
2649091140,2phc2sys0-21swapper/321:49:213
2649091140,2phc2sys0-21swapper/300:29:183
2649091140,1phc2sys0-21swapper/323:39:233
2649091140,1phc2sys0-21swapper/321:19:203
295265199139,2cyclictest0-21swapper/222:10:012
295265199139,1cyclictest0-21swapper/220:20:012
295265199138,3cyclictest0-21swapper/200:31:232
295265199138,2cyclictest0-21swapper/221:55:092
295265199134,6cyclictest29972302sleep219:44:202
295265199131,9cyclictest0-21swapper/219:45:162
2952651991310,2cyclictest0-21swapper/220:54:062
2952651991310,1cyclictest0-21swapper/223:36:282
2952651991310,1cyclictest0-21swapper/222:30:032
2952651991310,1cyclictest0-21swapper/221:01:342
2952651991310,1cyclictest0-21swapper/220:32:502
2952651991310,1cyclictest0-21swapper/220:25:562
2952651991310,1cyclictest0-21swapper/220:15:012
2952651991310,1cyclictest0-21swapper/220:10:012
2952651991310,1cyclictest0-21swapper/219:36:252
2952651991310,1cyclictest0-21swapper/200:15:082
2952651991310,1cyclictest0-21swapper/200:05:032
295265099138,4cyclictest2886568-21kworker/u16:3-rpciod21:40:231
295265099134,3cyclictest501rcuop/219:35:061
2952650991310,2cyclictest3295251-21kthreadcore23:01:301
2952650991310,2cyclictest3084404-21kthreadcore20:56:311
2649091131,2phc2sys0-21swapper/321:31:383
2649091130,3phc2sys0-21swapper/322:45:203
2649091130,2phc2sys0-21swapper/323:00:053
2649091130,2phc2sys0-21swapper/321:27:373
2649091130,2phc2sys0-21swapper/321:12:223
2649091130,2phc2sys0-21swapper/319:46:243
2649091130,2phc2sys0-21swapper/300:02:483
295265199129,2cyclictest0-21swapper/223:26:322
295265199129,1cyclictest0-21swapper/223:30:092
295265199129,1cyclictest0-21swapper/220:46:302
295265199129,1cyclictest0-21swapper/219:55:002
295265199129,1cyclictest0-21swapper/200:36:252
295265199128,2cyclictest0-21swapper/219:18:072
295265199126,3cyclictest30158492sleep220:01:032
295265199123,5cyclictest0-21swapper/219:21:232
295265199122,2cyclictest0-21swapper/221:11:232
2952651991210,1cyclictest0-21swapper/221:51:242
295265099129,2cyclictest2952488-21latency_hist19:10:011
2649091121,5phc2sys0-21swapper/300:06:233
2649091121,2phc2sys0-21swapper/321:58:393
2649091121,2phc2sys0-21swapper/321:58:393
2649091121,2phc2sys0-21swapper/320:01:243
2649091120,3phc2sys0-21swapper/319:56:233
2649091120,2phc2sys0-21swapper/320:48:223
2649091120,2phc2sys0-21swapper/300:20:403
295265199118,1cyclictest0-21swapper/220:21:302
295265199112,6cyclictest29790812sleep219:30:012
2649091111,2phc2sys0-21swapper/321:06:253
2649091111,2phc2sys0-21swapper/319:41:293
2649091110,3phc2sys0-21swapper/319:14:553
2649091110,2phc2sys0-21swapper/323:46:163
2649091110,2phc2sys0-21swapper/322:54:573
2649091110,2phc2sys0-21swapper/322:14:463
2649091110,2phc2sys0-21swapper/322:09:133
2649091110,2phc2sys0-21swapper/300:11:173
2649091110,1phc2sys0-21swapper/320:51:173
2649091110,1phc2sys0-21swapper/320:09:103
2649091110,1phc2sys0-21swapper/319:26:183
2649091110,1phc2sys0-21swapper/319:22:253
295265199107,1cyclictest0-21swapper/219:10:012
2649091105,2phc2sys0-21swapper/323:19:333
2649091101,3phc2sys0-21swapper/322:31:573
2649091101,3phc2sys0-21swapper/322:25:013
2649091101,2phc2sys0-21swapper/323:28:253
2649091101,2phc2sys0-21swapper/322:36:343
2649091101,2phc2sys0-21swapper/321:40:593
2649091101,2phc2sys0-21swapper/320:31:313
2649091100,2phc2sys0-21swapper/321:38:033
2649091100,2phc2sys0-21swapper/320:25:173
2649091100,1phc2sys0-21swapper/320:35:433
2649091100,1phc2sys0-21swapper/300:35:133
264909191,2phc2sys0-21swapper/320:55:593
264909190,2phc2sys0-21swapper/320:45:013
264909190,2phc2sys0-21swapper/320:21:243
264909190,2phc2sys0-21swapper/320:16:313
264909190,2phc2sys0-21swapper/319:51:263
264909190,2phc2sys0-21swapper/319:36:243
264909190,2phc2sys0-21swapper/319:31:353
264909190,2phc2sys0-21swapper/319:06:263
264909190,1phc2sys0-21swapper/320:10:463
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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