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2026-05-22 - 14:03
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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
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rackbslot7.osadl.org (updated Fri May 22, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3037421237,74sleep230375-21cpu18:56:002
3037421237,74sleep230375-21cpu18:56:002
30587211513,64sleep130646-21tune2fs18:56:281
30587211513,64sleep130646-21tune2fs18:56:281
3158321066,16sleep00-21swapper/018:59:200
3158321066,16sleep00-21swapper/018:59:200
31845999361,23cyclictest8156-21ssh21:56:382
31845999361,23cyclictest8156-21ssh21:56:382
223552910,7sleep222360-21unixbench_multi20:06:172
31845999051,10cyclictest181rcu_preempt23:03:552
31840999040,38cyclictest22760-21apt-get23:15:541
31840998827,23cyclictest0-21swapper/123:35:441
31840998827,23cyclictest0-21swapper/123:35:441
31835998565,13cyclictest297-21systemd-logind23:25:420
31845998463,15cyclictest11227-21ntp_kernel_err22:01:102
31845998263,9cyclictest0-21swapper/200:06:152
31845998161,13cyclictest0-21swapper/220:31:132
31845998158,14cyclictest7243-21cron21:55:412
31840998161,10cyclictest0-21swapper/119:56:291
31840998161,10cyclictest0-21swapper/119:56:291
31835998157,16cyclictest7778-21apt-get21:56:240
31835998157,16cyclictest7778-21apt-get21:56:240
31835998133,42cyclictest14089-21grep19:41:290
31845998059,14cyclictest31133-21kworker/u17:0-xprtiod23:46:172
31845998059,14cyclictest31133-21kworker/u17:0-xprtiod23:46:172
31835998047,26cyclictest0-21swapper/000:00:400
31835998047,26cyclictest0-21swapper/000:00:400
31845997963,9cyclictest0-21swapper/222:41:062
31845997961,11cyclictest0-21swapper/222:06:032
31845997954,15cyclictest0-21swapper/220:16:072
31845997948,22cyclictest20070-21cut20:01:022
31835997948,21cyclictest29546-21apt-get20:30:550
31845997862,9cyclictest0-21swapper/200:11:172
31845997862,9cyclictest0-21swapper/200:11:172
31840997863,8cyclictest0-21swapper/121:21:081
31840997859,13cyclictest19275-21munin-plugin-st22:15:411
31840997859,13cyclictest19275-21munin-plugin-st22:15:411
31840997857,15cyclictest544-21cron21:15:411
31840997857,10cyclictest0-21swapper/120:25:451
31835997845,23cyclictest5405-21apt-get20:55:520
31835997844,26cyclictest4562-21apt-get21:50:550
31835997836,30cyclictest17057-21ssh22:11:070
31835997836,30cyclictest17057-21ssh22:11:070
31835997829,38cyclictest29680-21ls00:21:080
31840997757,10cyclictest0-21swapper/120:11:011
31840997724,22cyclictest0-21swapper/119:23:461
31845997659,12cyclictest0-21swapper/221:16:102
31845997659,12cyclictest0-21swapper/221:16:102
31845997659,11cyclictest0-21swapper/221:36:172
31845997659,11cyclictest0-21swapper/221:36:172
31845997659,10cyclictest0-21swapper/219:51:172
31845997648,18cyclictest13123-21ssh22:59:332
31840997656,9cyclictest0-21swapper/121:20:441
31840997656,9cyclictest0-21swapper/121:20:441
31840997654,14cyclictest0-21swapper/121:55:461
31840997646,24cyclictest16962-21grep19:51:121
31835997649,19cyclictest16582-21fschecks_count19:51:010
31835997648,22cyclictest10883-21apt-get22:55:560
31835997626,28cyclictest14090-21grep21:11:180
31835997617,18cyclictest24222-21runrttasks22:22:560
31835997617,18cyclictest24222-21runrttasks22:22:560
31845997558,10cyclictest0-21swapper/220:46:152
31845997555,11cyclictest0-21swapper/219:21:172
31845997549,17cyclictest26506-21unixbench_multi22:26:192
31840997555,14cyclictest8019-21ssh21:01:181
31835997554,14cyclictest352-21runrttasks20:16:070
31835997553,16cyclictest28945-21sh00:20:420
31835997548,20cyclictest352-21runrttasks23:43:110
31835997542,26cyclictest0-21swapper/021:40:520
31835997516,23cyclictest0-21swapper/021:25:190
3184999746,53cyclictest13378-21chrt21:11:033
3184999743,57cyclictest12871-21taskset22:04:273
3184999743,55cyclictest21007-21taskset20:03:303
3184999742,42cyclictest19419-21taskset21:21:053
31845997458,9cyclictest0-21swapper/219:11:312
31845997458,10cyclictest16970-21latency_hist00:00:442
31845997458,10cyclictest16970-21latency_hist00:00:442
31845997458,10cyclictest0-21swapper/223:06:072
31845997458,10cyclictest0-21swapper/220:21:062
31845997457,11cyclictest19153-21kworker/u17:2-xprtiod22:18:402
31845997455,13cyclictest2396-21fschecks_count23:36:022
31845997450,15cyclictest20240-21latency23:11:072
31845997450,15cyclictest20240-21latency23:11:072
31845997439,7cyclictest181rcu_preempt19:45:432
31840997458,7cyclictest0-21swapper/121:36:141
31840997458,7cyclictest0-21swapper/121:36:141
31835997445,20cyclictest1634-21cron22:40:400
31835997443,21cyclictest19813-21latency_hist20:00:450
3184999733,57cyclictest30768-21taskset00:22:353
3184999733,34cyclictest15947-21chrt23:04:103
31845997358,10cyclictest0-21swapper/219:31:112
31845997356,9cyclictest0-21swapper/219:26:022
31845997356,9cyclictest0-21swapper/219:26:022
31845997341,11cyclictest181rcu_preempt21:35:432
31840997355,11cyclictest277-21dbus-daemon00:10:421
31840997353,14cyclictest10287-21forks21:06:041
31840997350,16cyclictest0-21swapper/100:20:421
31835997347,18cyclictest9962-21fschecks_time19:31:020
3184999724,54cyclictest2940-21taskset19:10:413
3184999723,54cyclictest17145-21chrt22:11:083
3184999723,54cyclictest17145-21chrt22:11:083
31845997253,13cyclictest6751-21diskmemload23:21:102
31845997246,19cyclictest1397-21timerwakeupswit20:41:162
31845997246,19cyclictest1397-21timerwakeupswit20:41:162
31840997257,9cyclictest0-21swapper/122:05:431
31840997256,9cyclictest0-21swapper/123:55:581
31840997256,9cyclictest0-21swapper/123:55:581
31835997244,21cyclictest10109-21cpu21:05:590
31835997243,22cyclictest0-21swapper/000:05:520
31835997218,20cyclictest4337-21seq23:39:220
3184999713,55cyclictest6853-21taskset23:43:063
3184999713,54cyclictest28746-21chrt00:20:163
31845997153,13cyclictest300-21rs:main2
31845997150,11cyclictest0-21swapper/200:16:292
31845997149,12cyclictest0-21swapper/221:10:452
31845997148,15cyclictest31823-21cyclictest00:02:452
31845997132,32cyclictest22913-21kworker/u19:0+nfsiod22:31:242
31840997155,11cyclictest0-21swapper/120:20:441
31840997150,15cyclictest20162-21if_err_eth023:11:051
31840997150,15cyclictest20162-21if_err_eth023:11:051
31840997142,22cyclictest0-21swapper/100:20:591
31835997152,13cyclictest16865-21switchtime21:16:160
31835997152,13cyclictest16865-21switchtime21:16:160
31835997148,17cyclictest5228-21latency_hist20:55:430
31835997148,17cyclictest11070-21ssh23:50:510
31835997136,24cyclictest13837-21apt-get23:00:500
3184999704,51cyclictest22155-21taskset21:25:593
3184999703,38cyclictest16475-21chrt00:00:093
3184999703,38cyclictest16475-21chrt00:00:093
31845997055,9cyclictest18770-21ntp_kernel_pll_19:56:362
31845997055,9cyclictest18770-21ntp_kernel_pll_19:56:362
31845997051,13cyclictest5302-21needreboot19:16:082
31845997051,11cyclictest0-21swapper/219:05:492
31845997050,13cyclictest0-21swapper/222:46:042
31845997050,13cyclictest0-21swapper/222:46:042
31845997050,10cyclictest0-21swapper/222:15:422
31845997050,10cyclictest0-21swapper/222:15:422
31845997049,11cyclictest0-21swapper/221:48:472
31845997046,13cyclictest0-21swapper/219:01:172
3184599703,24cyclictest28753-21sort23:25:572
31845997030,33cyclictest0-21swapper/223:30:562
31845997030,33cyclictest0-21swapper/223:30:562
31840997054,9cyclictest0-21swapper/123:00:421
31840997053,9cyclictest4629-21grep22:45:411
31840997053,11cyclictest31385-21apt-get20:35:531
31840997053,11cyclictest31385-21apt-get20:35:531
31840997049,13cyclictest13849-21ssh23:00:521
31840997036,26cyclictest8099-21ssh23:45:541
31840997036,26cyclictest8099-21ssh23:45:541
31840997036,25cyclictest7809-21ssh21:55:561
31840997036,25cyclictest7809-21ssh21:55:561
31835997052,10cyclictest546-21apt-get20:40:560
31835997052,10cyclictest546-21apt-get20:40:560
31835997051,11cyclictest31645-21apt-get23:30:560
31835997051,11cyclictest31645-21apt-get23:30:560
31835997047,17cyclictest24557-21latency_hist20:15:440
31835997043,12cyclictest20473-21ssh23:11:140
31835997043,12cyclictest20473-21ssh23:11:140
31835997039,24cyclictest18671-21latency19:56:330
31835997033,25cyclictest1968-21apt-get22:40:520
31835997032,26cyclictest8087-21apt-get23:45:520
31835997032,26cyclictest8087-21apt-get23:45:520
31835997028,18cyclictest0-21swapper/022:01:180
31835997019,25cyclictest18532-21chrt23:08:040
31835997019,22cyclictest27502-21seq22:28:520
31835997019,19cyclictest15871-21seq19:48:000
3184999693,53cyclictest20705-21chrt00:06:133
3184999693,51cyclictest27597-21chrt21:35:243
3184999692,53cyclictest27854-21taskset22:29:523
3184999692,40cyclictest9699-21taskset19:30:543
3184999692,34cyclictest24687-21chrt23:18:413
3184999692,34cyclictest20613-21chrt22:16:183
31845996952,11cyclictest23320-21ntp_kernel_err23:16:102
31840996955,9cyclictest1989-21latency_hist20:45:431
31840996955,9cyclictest1989-21latency_hist20:45:431
31840996952,11cyclictest3775-21/usr/sbin/munin20:51:091
31840996952,11cyclictest277-21dbus-daemon21:35:421
31840996932,27cyclictest25189-21modprobe22:25:411
31840996932,27cyclictest25189-21modprobe22:25:411
31840996932,26cyclictest3733-21awk19:11:231
31840996930,28cyclictest5775-21/usr/sbin/munin19:16:181
31840996924,9cyclictest181rcu_preempt23:21:141
31835996949,14cyclictest7875-21latency_hist19:25:440
31835996947,16cyclictest544-21cron00:30:410
3183599693,47cyclictest31385-21apt-get20:36:030
3183599693,47cyclictest31385-21apt-get20:36:030
31835996930,27cyclictest28006-21acpi21:35:510
31835996930,27cyclictest28006-21acpi21:35:510
31835996924,38cyclictest25377-21perl21:31:030
31835996917,24cyclictest22778-21chrt23:15:550
3184999685,48cyclictest0-21swapper/320:40:563
3184999685,48cyclictest0-21swapper/320:40:563
3184999683,52cyclictest7784-21chrt21:55:513
3184999683,52cyclictest7784-21chrt21:55:513
3184999683,52cyclictest29991-21chrt21:38:443
3184999683,52cyclictest29991-21chrt21:38:443
3184999683,52cyclictest20306-21chrt23:11:073
3184999683,52cyclictest20306-21chrt23:11:073
3184999683,51cyclictest28755-21chrt22:31:023
3184999682,54cyclictest9984-21taskset23:48:373
3184999682,54cyclictest9984-21taskset23:48:373
3184999682,52cyclictest15469-21chrt22:08:243
3184999682,35cyclictest3613-21taskset23:37:183
3184999682,35cyclictest13561-21chrt23:00:413
31845996845,14cyclictest22645-21ntp_offset21:26:112
31845996839,20cyclictest2661-21ls00:30:452
31845996821,8cyclictest181rcu_preempt22:35:562
31840996855,6cyclictest0-21swapper/122:46:051
31840996855,6cyclictest0-21swapper/122:46:051
31840996854,8cyclictest0-21swapper/122:31:061
31840996832,27cyclictest17218-21apt-get00:01:321
31840996831,27cyclictest13826-21diskstats22:06:011
31835996850,11cyclictest0-21swapper/019:25:510
31835996850,11cyclictest0-21swapper/019:25:510
31835996839,23cyclictest28700-21ssh23:25:570
31835996832,14cyclictest0-21swapper/022:06:180
31835996816,22cyclictest21024-21seq20:03:440
3184999676,49cyclictest0-21swapper/323:20:523
3184999674,48cyclictest6761-21taskset21:00:413
3184999673,52cyclictest18808-21taskset23:08:523
31849996735,22cyclictest31649-21chrt22:36:013
3184999673,51cyclictest3797-21chrt21:49:313
3184999673,51cyclictest27673-21chrt20:25:423
3184999673,51cyclictest1339-21chrt00:27:423
3184999673,51cyclictest11208-21taskset21:06:253
3184999673,50cyclictest4652-21chrt21:50:563
3184999672,37cyclictest6109-21taskset19:19:523
3184999672,32cyclictest18295-21chrt00:02:533
31845996753,10cyclictest31823-21cyclictest21:14:562
31845996749,8cyclictest0-21swapper/222:21:172
31845996749,8cyclictest0-21swapper/222:21:172
31845996748,9cyclictest0-21swapper/219:35:582
31845996748,9cyclictest0-21swapper/219:35:582
31845996747,9cyclictest0-21swapper/223:41:152
31845996747,14cyclictest21728-21idleruntime-cro21:25:412
31845996739,19cyclictest11091-21ssh23:50:552
31845996736,24cyclictest31022-21ssh21:40:522
31845996725,33cyclictest0-21swapper/220:55:572
31840996755,7cyclictest0-21swapper/121:41:091
31840996749,12cyclictest24610-21sh21:30:271
31840996748,13cyclictest8730-21switchtime22:51:161
31840996734,23cyclictest14496-21idleruntime-cro19:45:411
31840996733,25cyclictest634-21rm22:37:501
31840996733,25cyclictest12073-21sort19:36:161
31840996733,25cyclictest12073-21sort19:36:161
31840996732,25cyclictest2451-21basename00:30:411
31835996749,10cyclictest21456-21apt-get20:05:560
31835996748,9cyclictest3243-21apt-get19:10:520
31835996742,16cyclictest28494-21ssh22:30:510
31835996734,27cyclictest1563-21apt-get21:45:580
31835996731,25cyclictest17218-21apt-get00:01:370
31835996718,40cyclictest7049-21ssh21:00:510
3184999665,49cyclictest24858-21chrt22:24:463
3184999665,49cyclictest24858-21chrt22:24:463
3184999663,49cyclictest23823-21taskset00:11:163
3184999663,49cyclictest23823-21taskset00:11:163
3184999663,48cyclictest0-21swapper/320:30:553
3184999663,48cyclictest0-21swapper/319:50:513
3184999662,50cyclictest32027-21taskset19:00:573
3184999662,34cyclictest30390-21taskset23:28:063
3184999662,34cyclictest1966-21taskset22:40:513
31845996646,12cyclictest0-21swapper/220:26:082
31845996646,12cyclictest0-21swapper/220:26:082
31845996626,34cyclictest0-21swapper/220:10:522
31840996649,12cyclictest9674-21/usr/sbin/munin19:31:031
31840996648,13cyclictest298-21in:imuxsock23:44:261
31840996636,22cyclictest19847-21apt-get20:00:511
31840996633,25cyclictest1850-21chrt19:06:051
31840996631,26cyclictest4311-21ssh21:50:431
31840996631,23cyclictest15032-21tune2fs19:46:041
31835996645,14cyclictest12931-21apt-key19:40:450
31835996645,14cyclictest12931-21apt-key19:40:450
31835996642,17cyclictest24962-21latency_hist21:30:450
31835996641,18cyclictest10740-21latency_hist22:55:440
31835996634,23cyclictest4941-21apt-get22:45:530
31835996634,23cyclictest4941-21apt-get22:45:530
270332660,7sleep10-21swapper/122:27:311
3184999654,49cyclictest4619-21chrt19:15:433
3184999653,50cyclictest31863-21chrt23:31:023
3184999653,50cyclictest31863-21chrt23:31:023
3184999653,49cyclictest16046-21chrt19:50:143
3184999653,48cyclictest8552-21chrt19:26:083
3184999653,48cyclictest8552-21chrt19:26:083
3184999653,29cyclictest6961-21chrt22:48:583
3184999653,29cyclictest6961-21chrt22:48:583
3184999652,50cyclictest30991-21chrt21:40:513
3184999652,49cyclictest14229-21taskset19:42:283
3184999652,29cyclictest17836-21chrt21:18:133
3184999652,29cyclictest17836-21chrt21:18:133
31845996546,13cyclictest7807-21sh21:01:162
31840996549,10cyclictest21949-21ntp_kernel_pll_20:06:091
31840996531,25cyclictest6820-21ssh21:00:431
31840996531,24cyclictest16918-21ssh23:05:571
31840996530,24cyclictest2154-21/usr/sbin/munin20:45:511
31840996529,28cyclictest28081-21/usr/sbin/munin20:26:011
31840996529,28cyclictest28081-21/usr/sbin/munin20:26:011
31840996529,25cyclictest11014-21ssh23:50:451
31840996520,31cyclictest2172-21diskmemload23:35:531
31835996549,11cyclictest300-21rs:main0
31835996549,11cyclictest300-21rs:main0
31835996546,14cyclictest31823-21cyclictest19:20:440
31835996534,22cyclictest26309-21apt-get20:20:560
31835996531,23cyclictest19588-21apt-get22:15:520
3184999643,50cyclictest0-21swapper/321:00:533
3184999643,48cyclictest0-21swapper/319:56:223
3184999643,48cyclictest0-21swapper/319:56:223
3184999642,32cyclictest12530-21taskset19:39:253
3184999642,32cyclictest12530-21taskset19:39:253
3184999642,30cyclictest4389-21chrt20:51:143
3184999642,30cyclictest10395-21chrt22:55:143
31845996425,28cyclictest29257-21ssh00:20:572
31840996451,7cyclictest0-21swapper/119:01:111
31840996444,14cyclictest19625-21cpu22:15:581
31840996434,23cyclictest28772-21cat23:25:571
31840996434,20cyclictest23446-21chrt00:11:061
31840996434,20cyclictest23446-21chrt00:11:061
31835996426,32cyclictest32080-21/usr/sbin/munin19:00:580
3184999633,50cyclictest0-21swapper/323:50:513
3184999632,31cyclictest28684-21taskset20:26:153
3184999632,31cyclictest28684-21taskset20:26:153
3184999632,30cyclictest6974-21chrt19:21:103
3184999632,30cyclictest31373-21chrt20:35:503
3184999632,30cyclictest31373-21chrt20:35:503
31845996345,13cyclictest352-21runrttasks20:36:042
31845996345,13cyclictest352-21runrttasks20:36:042
31845996330,21cyclictest14756-21apt-get19:45:532
31840996332,23cyclictest30198-21/usr/sbin/munin20:31:131
31840996332,21cyclictest8813-21threads19:26:151
31840996332,21cyclictest8813-21threads19:26:151
3184999624,43cyclictest0-21swapper/320:05:543
3184999622,27cyclictest25990-21chrt20:20:113
31845996226,25cyclictest4403-21/usr/sbin/munin20:51:142
31835996134,22cyclictest1702-21cstates19:06:010
31835996125,26cyclictest26102-21sed00:15:450
31835996125,26cyclictest26102-21sed00:15:450
3184999604,43cyclictest0-21swapper/320:45:533
3184999603,25cyclictest24275-21chrt20:13:473
31835996045,9cyclictest17460-21sshd20:47:170
309502509,25sleep30-21swapper/318:56:423
309502509,25sleep30-21swapper/318:56:423
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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