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2026-09-05 - 11:59
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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 all highest latencies:
System rackbslot7.osadl.org (updated Sat Sep 05, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3267721296,17sleep00-21swapper/019:08:420
456991166,87cyclictest13204-21kworker/u18:1+rpciod22:20:591
3276521168,78sleep132766-21cron19:09:531
44799114102,8cyclictest170-21jbd2/mmcblk2p2-822:20:090
456991056,82cyclictest7237-21kworker/u19:1+ext4-rsv-conversion21:15:161
4569910421,44cyclictest12365-21latency_hist19:44:521
4569910334,35cyclictest0-21swapper/122:35:161
1284621010,5sleep30-21swapper/323:50:223
447999863,28cyclictest439-21cyclictest21:19:000
464999535,54cyclictest20829-21fschecks_count21:30:132
464999535,54cyclictest20829-21fschecks_count21:30:132
456999575,13cyclictest18167-21cron00:00:121
464999443,42cyclictest0-21swapper/222:00:292
464999337,49cyclictest31078-21unixbench_singl21:45:282
464999337,49cyclictest31078-21unixbench_singl21:45:282
46499933,42cyclictest6633-21cpuspeed22:50:072
46499933,35cyclictest22194-21fschecks_time00:05:142
464999331,10cyclictest0-21swapper/219:55:282
46499924,34cyclictest343-21runrttasks21:59:562
46499924,34cyclictest343-21runrttasks21:59:562
46499924,34cyclictest18237-40mandb23:59:562
456999251,34cyclictest26333-21kworker/u18:2+flush-179:019:24:551
456999251,34cyclictest26333-21kworker/u18:2+flush-179:019:24:551
46499914,33cyclictest16029-21/usr/sbin/munin23:05:282
46499914,31cyclictest343-21runrttasks22:57:092
46499913,37cyclictest28890-21/usr/sbin/munin23:25:112
46499913,36cyclictest6799-21find19:25:252
464999122,12cyclictest0-21swapper/200:15:302
44799914,56cyclictest15-21ksoftirqd/020:50:070
46499904,40cyclictest3207-21unixbench_singl00:25:292
46499904,40cyclictest3207-21unixbench_singl00:25:292
46499904,37cyclictest20253-21grep23:10:282
464999034,49cyclictest0-21swapper/222:34:542
46499903,36cyclictest13452-21/usr/sbin/munin22:10:192
46499903,36cyclictest13452-21/usr/sbin/munin22:10:192
46499903,33cyclictest10158-21unixbench_singl23:45:292
46499903,33cyclictest10158-21unixbench_singl23:45:292
46499903,32cyclictest21693-21latency_hist00:04:552
464999031,9cyclictest0-21swapper/223:04:562
464999031,9cyclictest0-21swapper/223:04:562
456999053,30cyclictest3689-21systemd-run21:54:531
456999041,40cyclictest0-21swapper/123:24:551
447999057,13cyclictest181rcu_preempt21:27:390
44799903,65cyclictest18766-21apt-get00:00:080
46499895,35cyclictest15288-21latency_hist23:54:552
46499894,37cyclictest15568-21modprobe19:54:532
46499894,35cyclictest7674-21/usr/sbin/munin21:10:212
46499893,39cyclictest6077-21ssh00:30:252
46499893,37cyclictest3704-21grep19:16:232
46499893,36cyclictest5358-21unixbench_singl21:00:272
46499893,36cyclictest343-21runrttasks20:17:252
46499893,33cyclictest25052-21/usr/sbin/munin00:10:032
46499893,33cyclictest1-21systemd20:14:532
46499893,32cyclictest32718-21switchtime20:45:272
46499893,28cyclictest1773-21processes20:50:252
464998929,8cyclictest0-21swapper/221:39:232
464998928,11cyclictest0-21swapper/222:45:252
464998928,11cyclictest0-21swapper/222:45:252
46499892,36cyclictest835-21ntp_kernel_pll_22:40:202
456998951,31cyclictest4951-21latency_hist00:29:551
456998951,31cyclictest4951-21latency_hist00:29:551
45699893,49cyclictest0-21swapper/119:25:151
464998863,18cyclictest11267-21timerandwakeup22:05:282
46499884,33cyclictest7986-21fschecks_count19:30:132
46499884,32cyclictest30524-21grep22:35:272
46499884,30cyclictest19780-21switchtime20:05:262
46499884,30cyclictest19780-21switchtime20:05:262
464998837,43cyclictest0-21swapper/219:44:522
46499883,37cyclictest23274-21fschecks_count23:16:242
46499883,36cyclictest9587-21fschecks_count19:35:142
46499883,35cyclictest25744-21cut20:25:152
46499883,35cyclictest13547-21unixbench_multi19:45:322
46499883,31cyclictest5795-21latency_hist23:39:562
46499883,31cyclictest5795-21latency_hist23:39:562
46499883,30cyclictest29721-21grep20:35:292
46499883,30cyclictest29721-21grep20:35:292
46499883,30cyclictest28492-21apt20:34:532
46499882,38cyclictest32079-21cpu23:30:072
46499882,35cyclictest17235-21taskset21:24:552
46499882,34cyclictest23184-21/usr/sbin/munin22:25:242
46499882,34cyclictest23184-21/usr/sbin/munin22:25:242
46499882,33cyclictest17457-21/usr/sbin/munin20:00:122
46499882,33cyclictest17457-21/usr/sbin/munin20:00:122
456998844,37cyclictest0-21swapper/122:14:531
456998844,37cyclictest0-21swapper/122:14:531
456998842,39cyclictest0-21swapper/121:39:541
456998834,48cyclictest3378-21sh23:35:211
456998834,48cyclictest3378-21sh23:35:211
46499876,64cyclictest11355-21runrttasks21:15:442
46499874,32cyclictest5874-21modprobe23:39:562
46499873,37cyclictest9449-21unixbench_singl00:35:282
46499873,37cyclictest498-21latency_hist21:49:542
46499873,37cyclictest2405-21latency_hist19:14:572
46499873,37cyclictest2405-21latency_hist19:14:572
46499873,35cyclictest28639-21latency_hist23:24:542
46499872,36cyclictest30750-21sed20:40:172
456998730,31cyclictest0-21swapper/122:51:401
464998638,39cyclictest0-21swapper/200:20:172
464998636,42cyclictest0-21swapper/222:21:262
46499863,35cyclictest24591-21taskset20:20:252
46499863,33cyclictest5917-21latency_hist19:24:552
46499863,33cyclictest5917-21latency_hist19:24:552
46499862,35cyclictest1483-21/usr/sbin/munin21:50:232
46499862,31cyclictest17788-21runrttasks21:25:162
456998627,31cyclictest0-21swapper/121:13:051
456998619,36cyclictest7362-21diskmemload00:13:111
447998665,14cyclictest326-21systemd-logind20:59:540
447998651,13cyclictest181rcu_preempt19:35:170
447998644,13cyclictest181rcu_preempt20:45:040
447998630,30cyclictest15-21ksoftirqd/019:44:560
46499853,30cyclictest4185-21latency_hist20:59:552
456998524,31cyclictest0-21swapper/121:08:431
456998524,31cyclictest0-21swapper/121:08:431
447998563,15cyclictest439-21cyclictest22:35:250
46499844,29cyclictest16709-21grep22:15:072
46499842,35cyclictest6635-21processes21:05:322
46499842,35cyclictest6635-21processes21:05:322
456998441,36cyclictest0-21swapper/123:25:191
45699843,67cyclictest0-21swapper/120:05:051
45699843,67cyclictest0-21swapper/120:05:051
456998435,44cyclictest0-21swapper/121:44:521
456998435,44cyclictest0-21swapper/121:44:521
447998460,17cyclictest23623-21sh23:16:320
447998458,17cyclictest326-21systemd-logind19:14:540
447998458,17cyclictest326-21systemd-logind19:14:540
456998366,9cyclictest0-21swapper/122:29:531
456998366,9cyclictest0-21swapper/122:29:531
456998361,13cyclictest4857-21ssh21:55:271
456998361,13cyclictest4857-21ssh21:55:271
456998360,17cyclictest7362-21diskmemload23:54:541
456998356,20cyclictest30122-21sendmail20:39:521
456998356,20cyclictest30122-21sendmail20:39:521
456998336,39cyclictest0-21swapper/122:55:221
447998349,28cyclictest7215-21proc_pri22:50:220
447998347,8cyclictest181rcu_preempt21:20:090
447998341,12cyclictest0-21swapper/023:40:160
45699826,65cyclictest14273-21apt-get21:20:031
456998258,17cyclictest23661-21idleruntime-cro20:19:521
447998259,15cyclictest26848-21kworker/u19:2-nfsiod22:04:380
447998259,15cyclictest20362-21kworker/u17:3+rpciod21:10:490
447998256,17cyclictest28496-21fschecks_time00:15:160
44799823,38cyclictest32454-21ssh23:30:160
46499812,32cyclictest493-21latency_hist19:09:572
45699813,64cyclictest15845-21apt-get19:55:081
447998145,22cyclictest181rcu_preempt00:20:170
456998061,14cyclictest4234-21kworker/u19:0+events_unbound21:34:521
456998061,14cyclictest4234-21kworker/u19:0+events_unbound21:34:521
456998028,43cyclictest30390-21apt-get20:40:031
456998028,43cyclictest0-21swapper/120:10:181
456998021,31cyclictest343-21runrttasks19:52:381
447998058,16cyclictest7362-21diskmemload23:05:150
447998052,14cyclictest181rcu_preempt21:43:260
447998052,14cyclictest181rcu_preempt21:43:260
456997962,11cyclictest200-21systemd-journal23:41:231
456997937,35cyclictest0-21swapper/122:19:571
456997937,35cyclictest0-21swapper/120:20:271
456997937,34cyclictest0-21swapper/121:00:271
456997935,37cyclictest0-21swapper/100:35:231
456997927,42cyclictest0-21swapper/122:39:571
447997948,21cyclictest7362-21diskmemload22:05:260
456997836,34cyclictest0-21swapper/121:48:391
456997835,35cyclictest0-21swapper/121:29:541
447997843,22cyclictest181rcu_preempt23:24:560
447997833,35cyclictest0-21swapper/021:54:550
44799782,47cyclictest15-21ksoftirqd/022:59:270
456997757,14cyclictest7362-21diskmemload23:30:121
45699773,60cyclictest22587-21apt-get23:15:141
447997750,10cyclictest181rcu_preempt23:48:250
447997750,10cyclictest181rcu_preempt23:48:250
44799773,49cyclictest15-21ksoftirqd/022:31:550
44799773,46cyclictest15-21ksoftirqd/000:37:260
45699763,61cyclictest2934-21apt-get19:15:591
456997629,36cyclictest0-21swapper/119:30:141
44799763,43cyclictest16435-21unixbench_singl23:55:290
447997630,10cyclictest181rcu_preempt20:00:300
447997630,10cyclictest181rcu_preempt20:00:300
456997553,16cyclictest25414-21kworker/u19:0+events_unbound20:34:531
45699753,42cyclictest0-21swapper/120:53:401
456997529,35cyclictest0-21swapper/120:55:141
447997560,10cyclictest439-21cyclictest22:59:570
447997560,10cyclictest439-21cyclictest22:59:570
44799754,40cyclictest343-21runrttasks00:32:130
44799754,36cyclictest5199-21latency_hist00:29:560
44799754,33cyclictest29018-21fschecks_time20:35:140
44799754,33cyclictest29018-21fschecks_time20:35:140
44799753,40cyclictest343-21runrttasks22:46:590
44799753,40cyclictest343-21runrttasks22:46:590
44799753,37cyclictest2732-21/usr/sbin/munin23:35:190
44799753,37cyclictest2732-21/usr/sbin/munin23:35:190
45699743,33cyclictest13275-21latency_hist22:09:551
447997447,13cyclictest181rcu_preempt23:10:250
456997353,15cyclictest2114-21apt-key19:14:551
456997353,15cyclictest2114-21apt-key19:14:551
45699733,42cyclictest18759-21taskset20:04:141
45699733,42cyclictest18759-21taskset20:04:141
456997333,32cyclictest0-21swapper/122:04:531
44799735,53cyclictest343-21runrttasks23:22:580
447997350,10cyclictest181rcu_preempt22:17:020
447997348,13cyclictest181rcu_preempt20:11:160
447997341,12cyclictest181rcu_preempt00:07:470
447997338,17cyclictest181rcu_preempt23:50:590
447997338,16cyclictest181rcu_preempt00:12:120
44799733,50cyclictest1996-21apt-get19:15:080
447997329,13cyclictest181rcu_preempt20:15:080
447997313,29cyclictest15-21ksoftirqd/019:55:290
45699723,59cyclictest18259-21systemd-run23:59:531
45699723,40cyclictest28255-21sh22:32:291
456997230,35cyclictest0-21swapper/100:22:371
447997248,11cyclictest181rcu_preempt22:28:570
447997248,11cyclictest181rcu_preempt22:28:570
447997246,20cyclictest26649-21latency_hist21:39:540
447997226,18cyclictest181rcu_preempt00:28:380
45699714,54cyclictest3409-21apt-get22:45:031
45699714,54cyclictest3409-21apt-get22:45:031
45699713,40cyclictest0-21swapper/123:11:051
447997152,12cyclictest326-21systemd-logind19:34:530
447997150,8cyclictest181rcu_preempt21:46:560
447997143,11cyclictest181rcu_preempt20:05:360
447997143,11cyclictest181rcu_preempt20:05:360
44799713,34cyclictest343-21runrttasks19:50:130
447997131,32cyclictest181rcu_preempt21:05:220
447997131,32cyclictest181rcu_preempt21:05:220
447997117,33cyclictest15-21ksoftirqd/022:10:200
447997117,33cyclictest15-21ksoftirqd/022:10:200
456997050,14cyclictest8115-21latency_hist00:34:531
45699703,50cyclictest13645-21cut23:00:251
45699703,50cyclictest13645-21cut23:00:251
456997032,31cyclictest0-21swapper/100:18:071
45699702,57cyclictest0-21swapper/120:45:041
456997025,38cyclictest22477-21ssh00:05:191
447997051,13cyclictest1470-21ssh22:40:450
44799704,32cyclictest25281-21apt20:24:530
447997034,12cyclictest181rcu_preempt21:30:280
447997034,12cyclictest181rcu_preempt21:30:280
456996950,12cyclictest7362-21diskmemload23:49:091
456996950,12cyclictest7362-21diskmemload23:49:091
456996929,33cyclictest26001-21netstat20:25:201
447996955,10cyclictest439-21cyclictest21:57:070
447996955,10cyclictest439-21cyclictest21:57:070
447996923,12cyclictest181rcu_preempt20:25:160
447996916,26cyclictest317-21dbus-daemon20:34:550
456996847,15cyclictest12803-21fschecks_count19:45:181
447996830,8cyclictest181rcu_preempt19:20:110
447996830,8cyclictest181rcu_preempt19:20:110
45699674,45cyclictest10120-21switchtime19:35:261
447996737,24cyclictest161ktimers/019:29:520
245222670,7sleep30-21swapper/300:09:193
473996631,23cyclictest29829-21chrt21:44:533
473996631,23cyclictest29829-21chrt21:44:533
473996628,26cyclictest9646-21taskset23:45:203
473996628,26cyclictest9646-21taskset23:45:203
473996626,22cyclictest0-21swapper/322:20:573
456996622,35cyclictest0-21swapper/123:09:531
447996648,13cyclictest58-21kcompactd021:04:420
447996628,16cyclictest181rcu_preempt19:45:250
47399655,36cyclictest901-21kworker/3:1+events20:15:033
47399635,36cyclictest0-21swapper/321:15:443
47399633,42cyclictest3105-21chrt23:35:143
47399633,42cyclictest3105-21chrt23:35:143
473996323,27cyclictest32003-21taskset20:45:063
447996330,19cyclictest181rcu_preempt20:40:110
47399623,42cyclictest0-21swapper/300:00:323
47399622,46cyclictest8071-21chrt00:34:513
326332626,42sleep30-21swapper/319:08:083
473996126,23cyclictest7905-21chrt21:10:133
473996126,23cyclictest4777-21chrt00:29:293
473996126,23cyclictest4777-21chrt00:29:293
473996121,22cyclictest5123-21chrt21:00:253
473996026,20cyclictest1461-21chrt23:32:233
473996025,23cyclictest2974-21chrt21:53:083
473996025,22cyclictest18346-21chrt23:59:543
473996024,23cyclictest24142-21chrt21:35:173
47399597,39cyclictest229742sleep323:16:053
473995928,21cyclictest18193-21chrt22:16:383
473995927,20cyclictest12267-21chrt22:59:113
473995926,21cyclictest10639-21chrt22:05:153
473995926,20cyclictest25726-21chrt00:10:243
473995924,24cyclictest26411-21chrt22:30:113
473995923,22cyclictest29568-21chrt23:25:253
473995923,22cyclictest13648-21chrt22:10:093
473995923,22cyclictest13648-21chrt22:10:093
473995919,28cyclictest12310-21taskset19:44:243
47399584,39cyclictest9450-21taskset19:35:093
473995827,20cyclictest27033-21chrt20:29:563
473995824,23cyclictest8322-21taskset00:34:553
473995824,22cyclictest8682-21chrt22:01:303
473995824,22cyclictest26386-21chrt23:20:233
473995824,22cyclictest17453-21chrt23:06:123
473995823,23cyclictest31527-21chrt21:46:153
473995823,22cyclictest7686-21chrt23:42:073
47399573,37cyclictest1335-21taskset22:40:283
473995725,21cyclictest25221-21chrt22:27:483
473995725,21cyclictest25221-21chrt22:27:483
473995724,22cyclictest13342-21chrt23:00:173
473995724,22cyclictest13342-21chrt23:00:173
473995724,21cyclictest6938-21chrt21:05:353
473995724,21cyclictest6938-21chrt21:05:353
473995724,21cyclictest6140-21chrt22:49:393
473995724,21cyclictest6140-21chrt22:49:393
473995724,21cyclictest17062-21chrt21:24:483
473995723,23cyclictest30968-21chrt22:36:233
473995722,22cyclictest6855-21chrt22:50:123
473995722,21cyclictest17151-21chrt19:59:393
473995720,25cyclictest6339-21taskset19:25:133
473995627,19cyclictest20001-21chrt23:10:263
473995624,21cyclictest5558-21taskset19:20:313
473995624,21cyclictest5558-21taskset19:20:313
473995624,21cyclictest5455-21chrt21:56:243
473995624,21cyclictest5455-21chrt21:56:243
473995624,21cyclictest2938-21chrt19:15:083
473995624,20cyclictest32371-21chrt00:20:293
473995623,21cyclictest20245-21chrt20:07:413
473995623,21cyclictest20245-21chrt20:07:413
473995622,22cyclictest21212-21chrt21:30:233
473995622,22cyclictest21212-21chrt21:30:233
473995621,23cyclictest15470-21taskset19:53:393
473995524,20cyclictest28195-21chrt00:15:023
473995523,20cyclictest29814-21chrt20:36:243
473995523,20cyclictest29814-21chrt20:36:243
473995523,20cyclictest2778-21chrt20:55:073
473995522,21cyclictest21763-21chrt20:11:333
473995521,22cyclictest7787-21chrt19:30:033
47399544,33cyclictest30403-21chrt20:40:083
473995422,19cyclictest17460-21chrt21:25:083
473995421,21cyclictest28301-21chrt20:32:353
473995421,21cyclictest18610-21chrt20:02:183
473995421,21cyclictest18610-21chrt20:02:183
473995421,21cyclictest1508-21chrt20:50:173
473995321,20cyclictest24095-21chrt20:20:123
473995221,20cyclictest12606-21chrt19:45:013
473995018,20cyclictest1648-21chrt19:10:313
473995018,20cyclictest1648-21chrt19:10:313
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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