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2026-08-18 - 22:12
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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
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rackbslot7.osadl.org (updated Tue Aug 18, 2026 12:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1039221176,16sleep00-21swapper/007:07:460
10684991083,93cyclictest21285-21apt-get09:15:100
10684991064,87cyclictest26860-21apt-get10:15:020
10705991053,61cyclictest27609-21sort11:59:572
10705991053,61cyclictest27609-21sort11:59:572
10684991054,91cyclictest10364-21ssh10:40:160
10684991034,89cyclictest30859-21apt-get09:30:010
807921020,6sleep30-21swapper/309:45:033
106849910168,23cyclictest17612-21diskmemload10:55:190
10684999768,21cyclictest9641-21latency_hist08:44:490
10684999746,25cyclictest17749-21ssh11:44:150
1071299962,67cyclictest30905-21chrt09:30:033
10696999677,12cyclictest14534-21/usr/sbin/munin07:20:141
1070599943,45cyclictest353-21runrttasks07:40:512
10696999323,25cyclictest0-21swapper/112:06:181
10696999229,27cyclictest11803-21sh10:41:321
10696999221,25cyclictest1043-21unixbench_singl08:15:231
10696999221,25cyclictest1043-21unixbench_singl08:15:231
10684999261,21cyclictest11117-21sh09:50:000
10684999217,28cyclictest181rcu_preempt09:35:080
10696999130,24cyclictest29453-21seq12:02:161
10696999130,24cyclictest29453-21seq12:02:161
10684999151,17cyclictest181rcu_preempt12:24:340
105802919,52sleep210595-21sh07:09:482
10705999049,35cyclictest204-21systemd-journal08:04:272
10705999044,39cyclictest0-21swapper/210:45:102
10705999040,43cyclictest0-21swapper/212:05:032
10696999069,11cyclictest0-21swapper/107:35:211
10696999033,27cyclictest21349-21sh09:15:101
10696999025,26cyclictest353-21runrttasks11:16:101
10696999022,26cyclictest0-21swapper/111:58:271
10705998949,33cyclictest0-21swapper/210:10:102
1070599893,50cyclictest27984-21seq11:08:112
1070599893,49cyclictest6075-21seq12:16:392
1070599892,49cyclictest17742-21runrttasks10:50:492
10684998949,17cyclictest181rcu_preempt11:10:120
10684998948,20cyclictest181rcu_preempt11:45:050
10684998948,20cyclictest181rcu_preempt11:45:050
10696998864,15cyclictest31907-21ssh11:14:491
10696998823,24cyclictest0-21swapper/111:37:081
10684998863,16cyclictest27271-21sh11:59:450
10684998852,14cyclictest181rcu_preempt10:45:040
1070599872,48cyclictest19815-21seq07:35:082
10696998769,11cyclictest17612-21diskmemload10:00:081
10696998726,22cyclictest9585-21seq12:22:381
10696998720,26cyclictest22931-21fschecks_count11:00:081
10696998717,28cyclictest0-21swapper/110:24:491
10684998740,9cyclictest181rcu_preempt07:20:110
10684998732,11cyclictest181rcu_preempt07:10:020
10705998642,34cyclictest24666-21grep07:50:082
1070599863,47cyclictest3694-21ssh12:13:352
10696998629,27cyclictest6463-21seq10:34:321
10696998629,19cyclictest27467-21seq11:06:501
10696998624,24cyclictest12451-21cut07:14:501
10684998658,21cyclictest367-21ntpd11:34:480
10684998639,14cyclictest181rcu_preempt08:50:180
10684998636,13cyclictest181rcu_preempt12:16:150
10684998636,12cyclictest181rcu_preempt07:32:350
10712998515,53cyclictest0-21swapper/309:15:103
10705998562,14cyclictest0-21swapper/212:20:112
10696998542,36cyclictest0-21swapper/108:59:571
10696998530,42cyclictest0-21swapper/109:45:021
10696998530,21cyclictest11055-21seq08:48:551
10696998527,28cyclictest13409-21seq12:29:311
10696998527,28cyclictest13409-21seq12:29:311
10696998527,26cyclictest4931-21seq11:23:191
10696998523,29cyclictest20377-21ssh09:13:531
10696998522,28cyclictest14310-21ls10:45:431
10684998535,25cyclictest181rcu_preempt11:05:030
1070599844,71cyclictest28258-21/usr/sbin/munin09:25:212
1070599843,47cyclictest13507-21seq11:36:192
10696998427,25cyclictest10297-21seq11:31:051
10696998427,22cyclictest16272-21seq12:33:531
10696998427,22cyclictest16272-21seq12:33:531
10696998426,24cyclictest7192-21seq09:43:341
10696998426,18cyclictest20836-21seq10:55:471
10696998421,30cyclictest6596-21mailstats11:25:211
10684998446,17cyclictest181rcu_preempt10:03:220
10684998441,9cyclictest181rcu_preempt09:55:200
10705998361,8cyclictest181rcu_preempt11:24:232
10705998341,35cyclictest0-21swapper/211:30:202
1070599832,47cyclictest7267-21runrttasks09:43:462
10696998338,40cyclictest0-21swapper/109:30:131
10696998331,43cyclictest17292-21diskmemload12:35:151
10696998329,23cyclictest3721-21seq12:13:391
10696998328,23cyclictest29732-21seq09:28:181
10696998328,23cyclictest2852-21seq10:28:121
10696998328,23cyclictest2852-21seq10:28:121
10696998327,23cyclictest13558-21seq09:54:001
10696998326,26cyclictest23539-21seq11:53:091
10696998325,19cyclictest8195-21seq10:35:541
10696998321,30cyclictest26059-21acpi07:54:581
10696998321,30cyclictest26059-21acpi07:54:581
10696998319,24cyclictest0-21swapper/109:24:491
10684998360,15cyclictest17612-21diskmemload09:42:510
10684998358,16cyclictest20567-21cstates10:05:040
10705998243,33cyclictest334-21sh09:32:352
10705998240,34cyclictest0-21swapper/207:29:472
10705998240,34cyclictest0-21swapper/207:29:472
10696998231,20cyclictest13169-21seq08:55:071
10696998229,22cyclictest12476-21seq08:51:261
10696998228,19cyclictest13942-21seq07:15:531
10696998228,19cyclictest13942-21seq07:15:531
10696998222,25cyclictest0-21swapper/109:57:411
10696998220,27cyclictest24513-21grep07:50:021
10684998241,16cyclictest181rcu_preempt10:30:090
10684998228,31cyclictest181rcu_preempt08:00:040
1070599813,65cyclictest0-21swapper/208:44:582
10705998136,33cyclictest0-21swapper/211:19:492
10696998129,18cyclictest32173-21seq08:13:441
10696998126,22cyclictest18362-21seq10:52:271
10696998123,23cyclictest0-21swapper/110:18:271
10696998119,25cyclictest18460-21cat07:30:471
10705998064,9cyclictest0-21swapper/212:39:482
10705998054,18cyclictest25595-21sh09:20:332
1070599804,66cyclictest3811-21ssh10:30:012
10705998037,37cyclictest0-21swapper/211:40:032
1070599803,66cyclictest0-21swapper/207:55:032
1070599803,66cyclictest0-21swapper/207:55:032
1070599803,43cyclictest353-21runrttasks11:12:212
10705998033,39cyclictest0-21swapper/210:19:492
10696998027,24cyclictest26179-21seq10:14:261
10696998027,22cyclictest28885-21seq08:02:461
10696998026,20cyclictest17681-21ssh11:44:051
10696998025,24cyclictest6137-21seq08:33:041
10684998058,15cyclictest10675-21cyclictest12:05:400
10684998049,9cyclictest181rcu_preempt11:24:450
10684998047,12cyclictest181rcu_preempt10:50:580
10684998045,12cyclictest181rcu_preempt10:23:240
10684998042,28cyclictest0-21swapper/010:25:230
10684998042,28cyclictest0-21swapper/010:25:230
1070599798,58cyclictest17934-21apt-get09:10:012
10696997963,8cyclictest0-21swapper/107:40:211
10684997944,13cyclictest28290-21ssh09:25:220
10684997943,8cyclictest181rcu_preempt10:10:030
1070599784,64cyclictest21832-21ssh10:06:072
1070599784,58cyclictest11042-21ssh12:25:082
1070599784,58cyclictest11042-21ssh12:25:082
10705997840,28cyclictest0-21swapper/208:50:082
10705997837,36cyclictest0-21swapper/210:59:492
10705997835,38cyclictest0-21swapper/212:30:102
10705997835,38cyclictest0-21swapper/212:30:102
10705997834,38cyclictest24469-21/usr/sbin/munin11:55:132
10705997832,9cyclictest0-21swapper/207:15:052
10705997832,9cyclictest0-21swapper/207:15:052
10696997828,39cyclictest0-21swapper/108:25:011
10696997826,20cyclictest30336-21seq08:05:421
1068499788,9cyclictest14819-21modprobe11:39:460
10684997853,19cyclictest297-21in:imuxsock07:40:070
10684997852,9cyclictest181rcu_preempt07:55:000
10684997852,9cyclictest181rcu_preempt07:55:000
10684997850,10cyclictest181rcu_preempt09:20:160
10684997846,12cyclictest181rcu_preempt09:04:530
10684997842,12cyclictest181rcu_preempt08:55:050
1070599773,69cyclictest0-21swapper/209:54:582
1070599773,53cyclictest21285-21apt-get09:15:072
1070599773,41cyclictest18005-21apt-get07:30:062
10696997757,15cyclictest19536-21kworker/u19:1+events_unbound11:49:461
10696997757,15cyclictest19536-21kworker/u19:1+events_unbound11:49:461
10696997744,27cyclictest0-21swapper/107:09:511
10696997726,23cyclictest5817-21seq12:15:581
10684997743,11cyclictest181rcu_preempt12:39:220
10684997739,8cyclictest181rcu_preempt07:19:490
10684997739,8cyclictest181rcu_preempt07:19:490
1068499773,60cyclictest7144-21fschecks_count10:35:090
10684997730,14cyclictest181rcu_preempt09:10:080
1068499772,14cyclictest2357-21modprobe11:19:450
10705997639,31cyclictest23413-21ssh11:52:482
10705997637,32cyclictest0-21swapper/209:05:232
10705997635,32cyclictest0-21swapper/207:45:042
10705997631,38cyclictest10477-21sshd10:40:342
1069699763,58cyclictest15680-21kworker/u18:0+flush-179:009:35:031
10696997619,26cyclictest2056-21if_eth008:20:111
10696997619,26cyclictest2056-21if_eth008:20:111
1068499767,56cyclictest2276-21timerandwakeup12:10:220
10684997651,9cyclictest181rcu_preempt12:30:190
10684997651,9cyclictest181rcu_preempt12:30:190
10684997639,14cyclictest181rcu_preempt11:01:370
1068499763,36cyclictest10763-21latency_hist09:49:490
10705997511,50cyclictest1784-21ssh09:35:032
10684997550,15cyclictest11712-21ssh12:25:220
10684997550,15cyclictest11712-21ssh12:25:220
10684997542,12cyclictest181rcu_preempt09:00:090
10684997535,9cyclictest181rcu_preempt08:09:500
10684997526,27cyclictest181rcu_preempt08:35:110
1070599745,58cyclictest353-21runrttasks08:29:582
10705997436,30cyclictest0-21swapper/209:50:182
1070599743,60cyclictest1729-21apt-get08:19:592
1070599743,60cyclictest1729-21apt-get08:19:592
10705997433,33cyclictest0-21swapper/207:24:472
10705997428,38cyclictest0-21swapper/210:34:492
10696997456,13cyclictest10675-21cyclictest07:25:121
10696997456,13cyclictest10675-21cyclictest07:25:121
10696997438,30cyclictest20459-21ssh10:05:011
10684997451,15cyclictest0-21swapper/007:35:080
10684997446,11cyclictest181rcu_preempt12:00:240
10684997446,11cyclictest181rcu_preempt12:00:240
10684997445,20cyclictest16447-21cut07:25:090
10684997445,20cyclictest16447-21cut07:25:090
10684997436,8cyclictest181rcu_preempt07:49:480
10712997315,46cyclictest0-21swapper/309:35:123
1070599735,55cyclictest0-21swapper/209:44:552
1070599734,64cyclictest0-21swapper/211:45:012
1070599734,64cyclictest0-21swapper/211:45:012
1070599733,65cyclictest0-21swapper/210:19:572
1070599733,63cyclictest0-21swapper/210:00:002
1070599733,52cyclictest3336-21apt-get08:24:592
10705997331,32cyclictest0-21swapper/208:59:492
1070599732,57cyclictest7907-21awk08:39:462
10696997359,10cyclictest10675-21cyclictest08:40:211
10696997348,16cyclictest24198-21latency_hist07:49:481
10684997337,11cyclictest181rcu_preempt07:54:490
1068499733,38cyclictest6707-21timerandwakeup11:25:220
1068499732,39cyclictest22752-21ssh11:51:030
10712997218,28cyclictest0-21swapper/310:40:563
10705997254,8cyclictest0-21swapper/208:10:032
10696997243,23cyclictest8013-21latency_hist08:39:481
1070599713,57cyclictest29322-21apt-get08:05:022
1070599713,56cyclictest12449-21sed07:14:502
10705997119,47cyclictest381ktimers/210:25:002
10705997119,47cyclictest381ktimers/210:25:002
10684997147,9cyclictest181rcu_preempt08:20:160
10684997147,9cyclictest181rcu_preempt08:20:160
10684997142,12cyclictest181rcu_preempt08:25:230
10684997134,8cyclictest181rcu_preempt08:30:170
1070599704,53cyclictest14647-21seq08:59:572
1070599703,57cyclictest24322-21ssh11:01:432
10696997040,20cyclictest16260-21apt-get09:05:031
10684997031,10cyclictest181rcu_preempt08:45:150
10712996913,32cyclictest0-21swapper/310:15:353
10705996927,35cyclictest0-21swapper/208:19:492
10705996927,35cyclictest0-21swapper/208:19:492
10705996924,40cyclictest0-21swapper/211:25:092
10684996936,10cyclictest181rcu_preempt08:15:080
10684996936,10cyclictest181rcu_preempt08:15:080
10684996920,38cyclictest287-21dbus-daemon08:14:470
1070599682,43cyclictest8953-21ls08:40:222
1071299572,42cyclictest23480-21taskset10:09:513
1071299563,39cyclictest29855-21taskset09:28:373
1071299563,35cyclictest22932-21chrt11:00:083
1071299562,41cyclictest18224-21chrt07:30:383
1071299562,40cyclictest14306-21chrt09:55:043
1071299553,36cyclictest31002-21chrt08:10:023
1071299553,35cyclictest11131-21chrt07:10:083
1071299542,35cyclictest13303-21taskset10:44:523
1071299533,39cyclictest11311-21chrt09:50:063
1071299533,33cyclictest7287-21chrt12:19:463
1071299532,37cyclictest11644-21chrt12:25:213
1071299532,37cyclictest11644-21chrt12:25:213
1071299524,35cyclictest20066-21chrt09:13:043
1071299524,35cyclictest19553-21chrt10:54:573
1071299523,37cyclictest20957-21chrt10:05:133
1071299523,36cyclictest17113-21chrt07:25:233
1071299523,36cyclictest17113-21chrt07:25:233
1071299523,36cyclictest16806-21chrt09:05:193
1071299523,35cyclictest27246-21taskset09:24:483
1071299523,35cyclictest13732-21chrt11:36:553
1071299522,34cyclictest26137-21chrt07:55:043
1071299522,34cyclictest26137-21chrt07:55:043
1071299514,32cyclictest30863-21chrt12:05:033
1071299513,39cyclictest24188-21taskset11:54:463
1071299513,37cyclictest31965-21taskset11:14:513
1071299513,37cyclictest22143-21chrt07:40:223
1071299513,37cyclictest18479-21chrt11:45:053
1071299513,37cyclictest18479-21chrt11:45:053
1071299513,36cyclictest24545-21chrt11:55:023
1071299513,34cyclictest9347-21chrt12:22:013
1071299513,33cyclictest19461-21taskset10:54:493
1071299505,33cyclictest30334-21chrt10:20:093
1071299503,34cyclictest29425-21chrt12:02:113
1071299503,34cyclictest29425-21chrt12:02:113
1071299503,34cyclictest13557-21chrt08:55:183
1071299502,36cyclictest5838-21taskset11:25:003
101152509,23sleep30-21swapper/307:05:333
1071299493,37cyclictest17889-21taskset10:00:153
1071299493,36cyclictest29542-21chrt08:05:083
1071299493,34cyclictest5263-21chrt11:24:113
1071299493,33cyclictest9500-21taskset11:30:143
1071299493,33cyclictest3340-21chrt08:25:013
1071299493,33cyclictest12118-21taskset08:50:203
1071299492,34cyclictest6236-21chrt09:41:023
200292483,7sleep30-21swapper/312:39:483
1071299483,33cyclictest1442-21taskset08:19:463
1071299483,33cyclictest1442-21taskset08:19:463
1071299483,29cyclictest6916-21chrt08:35:093
1071299482,33cyclictest7299-21chrt10:35:123
1071299482,33cyclictest6296-21chrt10:34:063
1071299482,32cyclictest28080-21chrt11:08:273
1071299482,32cyclictest16701-21chrt11:41:293
1071299473,34cyclictest2330-21chrt12:10:223
1071299473,33cyclictest3219-21chrt08:24:493
1071299473,33cyclictest3219-21chrt08:24:493
1071299472,30cyclictest30741-21chrt11:12:153
1071299463,32cyclictest14389-21chrt07:19:483
1071299463,32cyclictest14389-21chrt07:19:483
1071299463,31cyclictest1344-21chrt10:25:193
1071299463,31cyclictest1344-21chrt10:25:193
1071299463,29cyclictest28261-21taskset08:00:183
1071299454,30cyclictest17012-21chrt12:34:493
1071299454,30cyclictest17012-21chrt12:34:493
1071299453,33cyclictest22948-21chrt07:45:043
1071299453,32cyclictest21127-21chrt07:39:493
1071299453,31cyclictest10064-21chrt08:45:103
1071299453,29cyclictest5475-21chrt08:30:153
1071299433,29cyclictest14907-21chrt09:00:083
1071299424,27cyclictest25283-21chrt07:50:223
1071299423,27cyclictest8187-21taskset08:39:593
1071299373,24cyclictest14551-21chrt07:19:563
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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