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2026-06-10 - 20:41
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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 Wed Jun 10, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4678213120,65sleep24704-21munin-run06:59:222
352421249,74sleep13543-21fschecks_count06:54:491
48569910590,10cyclictest7907-21apt-get10:39:462
48569910590,10cyclictest7907-21apt-get10:39:462
4840991036,87cyclictest18625-21ssh09:09:430
4840991036,87cyclictest18625-21ssh09:09:430
4840991023,79cyclictest8009-21diskmemload10:39:480
4840991023,79cyclictest8009-21diskmemload10:39:480
4840999862,28cyclictest297-21systemd-logind10:39:230
4856999769,20cyclictest15812-21ssh09:59:212
4856999468,20cyclictest22683-21netstat10:09:482
4856999353,33cyclictest0-21swapper/209:09:372
4856999353,33cyclictest0-21swapper/209:09:372
4848999172,12cyclictest2262-21cron08:29:221
4848999169,15cyclictest6778-21sh09:44:211
4848999169,15cyclictest6778-21sh09:44:211
4840999156,8cyclictest181rcu_preempt12:07:240
4840999156,8cyclictest181rcu_preempt12:07:240
4856999073,10cyclictest11981-21fschecks_time11:39:432
4856999073,10cyclictest11981-21fschecks_time11:39:432
4848999072,12cyclictest352-21runrttasks09:29:491
4856998963,18cyclictest6706-21unixbench_singl08:39:562
4848998970,12cyclictest297-21systemd-logind08:54:221
4848998970,12cyclictest297-21systemd-logind08:54:221
4856998765,16cyclictest18060-21gpgv09:09:252
4856998765,16cyclictest18060-21gpgv09:09:252
4840998514,46cyclictest15-21ksoftirqd/009:44:430
484099842,64cyclictest4692-21kworker/u18:1+ext4-rsv-conversion07:05:070
4856998360,16cyclictest15791-21kworker/u17:3+events_unbound10:04:212
4848998315,32cyclictest17966-21ps10:55:181
4848998315,32cyclictest17966-21ps10:55:181
4840998343,7cyclictest181rcu_preempt09:54:160
4856998236,28cyclictest10894-21apt-get10:44:322
4848998261,14cyclictest27678-21sh11:11:101
4848998260,15cyclictest22637-21sh11:03:551
484899824,57cyclictest7907-21apt-get10:39:381
484899824,57cyclictest7907-21apt-get10:39:381
4840998256,8cyclictest181rcu_preempt11:44:010
4840998256,8cyclictest181rcu_preempt11:44:010
4840998255,18cyclictest4503-21kernelversion08:34:470
4856998164,12cyclictest4827-21cyclictest10:38:252
4856998163,13cyclictest27394-21latency_hist09:24:252
4856998161,13cyclictest2374-21systemd-journal10:29:362
4848998162,13cyclictest277-21dbus-daemon09:09:231
4848998162,13cyclictest277-21dbus-daemon09:09:231
4840998155,8cyclictest181rcu_preempt10:30:240
4840998150,9cyclictest181rcu_preempt08:54:240
4840998150,9cyclictest181rcu_preempt08:54:240
4840998149,9cyclictest181rcu_preempt07:59:240
4840998149,9cyclictest181rcu_preempt07:59:240
4840998141,8cyclictest181rcu_preempt12:23:540
4840998136,16cyclictest181rcu_preempt11:02:440
364928110,38sleep00-21swapper/006:54:520
4856998061,14cyclictest10786-21proc_pri09:49:542
4840998049,7cyclictest181rcu_preempt07:44:380
4840998047,9cyclictest181rcu_preempt08:04:250
4856997956,14cyclictest23854-21ssh11:59:392
4856997949,21cyclictest19031-21cut07:39:422
4856997944,13cyclictest181rcu_preempt09:24:372
484899792,60cyclictest7313-21runrttasks07:04:501
4848997913,23cyclictest10093-21seq07:12:151
4848997913,23cyclictest10093-21seq07:12:151
4840997969,6cyclictest0-21swapper/010:47:070
4840997944,12cyclictest181rcu_preempt11:29:400
4840997944,12cyclictest181rcu_preempt11:29:400
484099793,31cyclictest15-21ksoftirqd/010:06:110
484099793,31cyclictest15-21ksoftirqd/010:06:110
4856997860,12cyclictest29670-21acpi12:09:302
4840997845,12cyclictest181rcu_preempt07:34:570
484099783,37cyclictest15-21ksoftirqd/007:33:390
4856997756,14cyclictest25529-21kworker/u17:3-nfsiod09:34:262
4856997742,10cyclictest58-21kcompactd011:14:212
4856997713,31cyclictest14696-21ssh11:44:382
4848997735,31cyclictest18865-21sh09:10:241
4848997735,31cyclictest18865-21sh09:10:241
4848997713,32cyclictest3278-21grep12:19:371
4848997713,25cyclictest1302-21head12:14:571
4840997745,12cyclictest181rcu_preempt08:09:390
484099774,41cyclictest29665-21/usr/sbin/munin12:09:450
4840997742,15cyclictest181rcu_preempt08:43:520
4840997732,17cyclictest181rcu_preempt10:10:100
4856997655,11cyclictest0-21swapper/207:29:432
4856997652,9cyclictest39-21ksoftirqd/209:42:322
4856997652,9cyclictest39-21ksoftirqd/209:42:322
4856997646,20cyclictest5675-21/usr/sbin/munin11:29:572
4856997646,20cyclictest5675-21/usr/sbin/munin11:29:572
4856997640,7cyclictest181rcu_preempt10:20:052
485699762,42cyclictest25543-21fschecks_time07:59:432
484899769,36cyclictest352-21runrttasks07:57:581
484899769,36cyclictest352-21runrttasks07:57:581
4848997657,13cyclictest1-21systemd07:04:241
4848997654,14cyclictest14422-21ssh11:44:241
4848997654,14cyclictest14422-21ssh11:44:241
4848997650,17cyclictest13761-21apt-key07:24:261
4848997650,17cyclictest13761-21apt-key07:24:261
4848997618,17cyclictest11967-21diskmemload11:53:101
4848997612,24cyclictest6988-21seq08:43:061
4840997661,8cyclictest24796-21ssh09:19:420
4840997646,13cyclictest181rcu_preempt07:49:450
4840997646,13cyclictest181rcu_preempt07:49:450
4840997644,12cyclictest181rcu_preempt10:52:370
4840997640,10cyclictest181rcu_preempt07:26:240
4856997554,13cyclictest30745-21ssh11:16:222
4856997551,16cyclictest23373-21fschecks_count11:04:432
4848997552,17cyclictest1-21systemd08:10:561
4848997521,17cyclictest25529-21kworker/u17:3-rpciod09:29:251
4848997513,22cyclictest11745-21seq07:17:501
4848997513,22cyclictest11745-21seq07:17:501
4848997511,27cyclictest0-21swapper/111:05:401
4840997558,12cyclictest4827-21cyclictest09:04:440
4840997558,12cyclictest4827-21cyclictest09:04:440
4840997554,12cyclictest28035-21ssh11:12:100
110932753,8sleep00-21swapper/008:54:490
4856997451,8cyclictest181rcu_preempt10:24:552
4856997451,8cyclictest181rcu_preempt10:24:552
4856997447,18cyclictest0-21swapper/207:04:272
4856997445,20cyclictest23518-21latency_hist07:54:242
4856997445,20cyclictest23518-21latency_hist07:54:242
4856997432,9cyclictest181rcu_preempt12:19:242
485699742,52cyclictest17257-21ssh10:54:502
485699742,52cyclictest17257-21ssh10:54:502
484899749,26cyclictest0-21swapper/108:34:351
484899746,51cyclictest7325-21rm09:44:421
4848997453,14cyclictest352-21runrttasks08:04:391
4848997421,34cyclictest1660-21ntpq09:34:491
4848997421,12cyclictest0-21swapper/110:34:401
4848997411,38cyclictest27637-21grep12:04:561
4848997411,38cyclictest27637-21grep12:04:561
4840997436,16cyclictest181rcu_preempt09:25:130
484099742,36cyclictest23562-21latency_hist11:59:250
4856997357,10cyclictest2374-21systemd-journal11:04:212
4856997351,13cyclictest0-21swapper/207:25:002
4856997351,12cyclictest0-21swapper/210:14:542
4856997351,12cyclictest0-21swapper/210:14:542
4856997347,19cyclictest10469-21latency_hist07:14:252
4856997347,19cyclictest10469-21latency_hist07:14:252
4856997345,9cyclictest181rcu_preempt07:54:382
4856997345,9cyclictest181rcu_preempt07:54:382
4856997341,12cyclictest181rcu_preempt08:39:252
485699733,30cyclictest14251-21ssh10:49:442
485699732,27cyclictest8093-21unixbench_multi09:44:572
4848997357,10cyclictest14594-21proc_pri10:49:541
484099735,39cyclictest15-21ksoftirqd/011:45:010
4840997348,10cyclictest181rcu_preempt11:04:310
4840997345,8cyclictest181rcu_preempt11:49:450
4840997341,10cyclictest181rcu_preempt10:24:440
4840997341,10cyclictest181rcu_preempt10:24:440
4840997337,16cyclictest181rcu_preempt09:37:260
4840997334,11cyclictest0-21swapper/008:04:560
4856997250,14cyclictest0-21swapper/207:44:462
4856997245,8cyclictest181rcu_preempt08:58:312
484899728,31cyclictest352-21runrttasks11:55:441
4848997250,16cyclictest544-21cron09:54:221
4848997250,11cyclictest0-21swapper/110:19:581
484899724,45cyclictest352-21runrttasks08:01:061
484899724,39cyclictest15796-21fschecks_count07:29:431
484899723,48cyclictest6687-21timerwakeupswit11:30:011
484899723,48cyclictest6687-21timerwakeupswit11:30:011
4848997215,22cyclictest20561-21sh10:05:561
4848997215,22cyclictest20561-21sh10:05:561
4848997214,27cyclictest352-21runrttasks09:14:531
4840997258,8cyclictest22597-21ssh09:14:580
4840997221,25cyclictest1027-21cut09:34:250
4856997156,10cyclictest297-21systemd-logind08:29:232
4856997148,15cyclictest13761-21apt-key07:24:262
4856997148,15cyclictest13761-21apt-key07:24:262
4856997148,15cyclictest0-21swapper/207:05:522
4856997142,14cyclictest0-21swapper/208:09:252
4848997145,19cyclictest7570-21fschecks_count08:44:421
4848997138,23cyclictest11947-21modprobe08:59:211
484899713,39cyclictest16913-21ssh09:59:541
4848997112,25cyclictest20046-21seq07:42:531
4848997111,28cyclictest16197-21seq11:46:111
4848997111,24cyclictest14341-21seq09:55:181
4840997156,10cyclictest32655-21ssh11:19:490
4840997156,10cyclictest32655-21ssh11:19:490
484099712,37cyclictest24926-21taskset12:00:220
4856997043,9cyclictest181rcu_preempt09:03:482
485699703,31cyclictest2493-21latency_hist11:24:242
485699703,31cyclictest2493-21latency_hist11:24:242
4856997031,18cyclictest4085-21wc08:34:252
4856997031,15cyclictest7930-21kworker/u17:2-xprtiod09:17:232
4856997023,11cyclictest0-21swapper/208:49:322
4856997023,11cyclictest0-21swapper/208:49:322
484899708,26cyclictest19676-21snmpd10:48:441
4848997048,12cyclictest0-21swapper/112:14:241
4848997036,24cyclictest0-21swapper/110:18:071
4848997036,24cyclictest0-21swapper/110:18:071
4848997028,14cyclictest181rcu_preempt09:04:261
4840997047,8cyclictest181rcu_preempt11:14:420
4840997047,12cyclictest181rcu_preempt12:25:490
4840997047,12cyclictest181rcu_preempt12:25:490
4840997046,8cyclictest181rcu_preempt08:14:320
4840997039,22cyclictest6343-21cron07:04:220
484099703,46cyclictest14976-21modprobe09:04:220
484099703,39cyclictest15969-21ssh09:59:250
4856996936,7cyclictest0-21swapper/211:54:552
4856996929,28cyclictest6588-21sort12:24:452
4856996929,28cyclictest6588-21sort12:24:452
4856996927,30cyclictest758-21cat08:24:242
4856996924,9cyclictest181rcu_preempt08:19:252
4848996952,11cyclictest3781-21kworker/u17:0-writeback11:19:531
4848996952,11cyclictest3781-21kworker/u17:0-writeback11:19:531
4848996947,15cyclictest6583-21sh12:24:461
4848996947,15cyclictest6583-21sh12:24:461
484899693,51cyclictest15463-21latency_hist07:29:251
4848996921,11cyclictest0-21swapper/111:14:471
4848996912,22cyclictest3865-21seq11:25:141
4840996949,7cyclictest181rcu_preempt10:01:050
4840996947,9cyclictest181rcu_preempt11:25:550
4840996942,11cyclictest181rcu_preempt07:39:570
4840996940,12cyclictest181rcu_preempt10:57:070
4840996940,12cyclictest181rcu_preempt10:57:070
4840996937,12cyclictest181rcu_preempt08:44:560
4856996834,13cyclictest181rcu_preempt12:04:492
4856996834,13cyclictest181rcu_preempt12:04:492
4856996834,12cyclictest181rcu_preempt07:37:302
485699683,28cyclictest20086-21timerwakeupswit10:04:562
485699683,28cyclictest20086-21timerwakeupswit10:04:562
4856996829,12cyclictest181rcu_preempt08:14:252
485699682,39cyclictest9735-21grep11:35:002
4848996820,12cyclictest0-21swapper/109:19:321
4848996810,23cyclictest23246-21seq07:52:161
4848996810,23cyclictest23246-21seq07:52:161
4856996742,12cyclictest181rcu_preempt07:18:342
4856996742,12cyclictest181rcu_preempt07:18:342
4856996728,30cyclictest23673-21kworker/u19:2+nfsiod12:22:552
484899678,32cyclictest352-21runrttasks07:34:311
484899677,25cyclictest0-21swapper/108:21:361
484899674,44cyclictest24819-21latency_hist10:14:251
484899672,44cyclictest11365-21awk11:39:211
4848996711,20cyclictest21766-21seq07:49:211
4848996710,22cyclictest0-21swapper/108:32:361
484099674,42cyclictest8669-21/usr/sbin/munin11:34:510
484099673,50cyclictest4046-21latency_hist08:34:250
4840996733,14cyclictest181rcu_preempt10:22:540
4840996732,28cyclictest0-21swapper/012:14:300
4856996639,17cyclictest352-21runrttasks11:50:412
4856996636,22cyclictest1323-21fschecks_count09:34:432
4848996635,21cyclictest31477-21modprobe08:19:221
484099664,25cyclictest15-21ksoftirqd/010:14:410
484099664,25cyclictest15-21ksoftirqd/010:14:410
484099663,48cyclictest626-21modprobe08:24:220
484099663,34cyclictest4775-21ps09:39:540
484099663,34cyclictest4775-21ps09:39:540
4840996628,16cyclictest181rcu_preempt07:17:260
4840996628,16cyclictest181rcu_preempt07:17:260
151902660,6sleep30-21swapper/310:50:253
4856996541,14cyclictest0-21swapper/208:44:452
4848996548,11cyclictest4360-21munin-plugin-st10:34:211
4848996518,12cyclictest0-21swapper/110:29:231
4848996518,12cyclictest0-21swapper/110:29:231
484099659,31cyclictest15-21ksoftirqd/007:09:490
484099659,31cyclictest15-21ksoftirqd/007:09:490
4840996549,11cyclictest297-21systemd-logind07:24:230
4840996549,11cyclictest297-21systemd-logind07:24:230
4848996411,24cyclictest25225-21sh12:01:121
485699633,34cyclictest11967-21diskmemload11:26:582
4840996344,12cyclictest0-21swapper/008:29:250
70802590,11sleep3451rcuc/309:44:313
486299588,41cyclictest0-21swapper/309:09:483
486299588,41cyclictest0-21swapper/309:09:483
486299588,33cyclictest0-21swapper/310:54:433
486299588,33cyclictest0-21swapper/310:54:433
486299573,40cyclictest21949-21taskset09:14:453
486299573,38cyclictest17843-21taskset11:49:383
261542570,9sleep30-21swapper/311:09:323
486299563,41cyclictest7584-21taskset07:05:383
486299543,40cyclictest28256-21chrt09:24:543
486299543,36cyclictest10562-21taskset10:44:213
486299543,36cyclictest10562-21taskset10:44:213
486299542,39cyclictest24031-21chrt07:54:463
486299542,39cyclictest24031-21chrt07:54:463
486299533,36cyclictest12618-21chrt11:39:573
486299533,36cyclictest12618-21chrt11:39:573
486299533,34cyclictest15771-21chrt07:29:403
486299533,33cyclictest10498-21chrt07:14:253
486299532,36cyclictest8825-21taskset08:49:243
486299524,34cyclictest18332-21taskset09:09:253
486299524,34cyclictest18332-21taskset09:09:253
486299523,35cyclictest14726-21chrt09:03:423
486299523,34cyclictest6620-21taskset12:24:463
486299523,34cyclictest6620-21taskset12:24:463
486299522,36cyclictest13888-21chrt07:24:263
486299522,36cyclictest13888-21chrt07:24:263
486299512,35cyclictest32054-21chrt11:19:263
486299504,33cyclictest25399-21chrt11:08:153
486299503,37cyclictest21318-21taskset11:54:543
486299503,36cyclictest21504-21taskset07:45:563
486299503,32cyclictest26585-21chrt09:22:353
486299493,35cyclictest1585-21taskset10:29:253
486299493,35cyclictest1585-21taskset10:29:253
486299493,32cyclictest20624-21chrt10:06:073
486299493,32cyclictest20624-21chrt10:06:073
486299493,32cyclictest15669-21chrt11:45:003
486299492,36cyclictest2273-21chrt12:17:363
486299492,35cyclictest12053-21chrt09:52:173
486299492,34cyclictest5122-21chrt10:34:483
486299488,31cyclictest7634-21taskset11:32:193
486299488,31cyclictest7634-21taskset11:32:193
486299483,33cyclictest16656-21chrt09:59:473
486299483,31cyclictest695-21chrt11:19:583
486299483,31cyclictest695-21chrt11:19:583
486299482,35cyclictest21833-21taskset11:01:383
486299473,33cyclictest13915-21chrt09:54:573
486299473,32cyclictest5023-21chrt09:39:573
486299473,32cyclictest5023-21chrt09:39:573
486299473,32cyclictest18839-21taskset07:39:323
486299473,31cyclictest4751-21chrt12:21:093
486299473,31cyclictest27978-21chrt12:05:323
486299473,31cyclictest27978-21chrt12:05:323
486299464,32cyclictest14590-21chrt07:25:113
486299463,33cyclictest9337-21chrt07:09:473
486299463,29cyclictest9948-21taskset08:49:573
486299463,29cyclictest9948-21taskset08:49:573
486299463,29cyclictest23672-21chrt11:59:323
486299453,32cyclictest11302-21chrt10:44:463
486299452,33cyclictest5849-21chrt08:39:373
486299452,30cyclictest25993-21taskset10:14:553
486299452,30cyclictest25993-21taskset10:14:553
486299443,31cyclictest31184-21chrt09:29:523
486299443,31cyclictest2350-21chrt08:29:243
486299443,30cyclictest12122-21taskset08:59:243
486299442,33cyclictest25291-21taskset07:59:323
55492432,6sleep30-21swapper/306:59:523
486299434,30cyclictest30829-21chrt08:14:553
486299434,30cyclictest29961-21taskset12:09:423
486299434,27cyclictest28524-21taskset08:09:323
486299433,26cyclictest31797-21chrt08:19:363
4862994328,9cyclictest287622chrt10:19:533
486299432,26cyclictest9242-21chrt11:34:503
486299423,28cyclictest26873-21taskset08:04:263
486299423,27cyclictest4908-21chrt06:59:263
486299423,27cyclictest4499-21taskset10:34:243
486299422,31cyclictest22660-21taskset10:09:483
486299413,29cyclictest22524-21chrt07:49:483
486299413,29cyclictest22524-21chrt07:49:483
486299403,28cyclictest1706-21taskset09:34:513
486299403,27cyclictest5360-21taskset08:37:503
486299402,28cyclictest17233-21chrt07:34:343
486299402,27cyclictest2668-21taskset11:24:323
486299402,27cyclictest11558-21taskset07:15:223
486299402,27cyclictest11558-21taskset07:15:223
486299394,26cyclictest3514-21chrt08:29:573
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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