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2026-08-11 - 01:15
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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 rack0slot2.osadl.org (updated Tue Aug 11, 2026 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
394445125318,30sleep70-21swapper/719:06:077
394445125318,30sleep70-21swapper/719:06:077
394433025343,7sleep40-21swapper/419:04:274
394433025343,7sleep40-21swapper/419:04:274
394434924939,7sleep50-21swapper/519:04:445
394434924939,7sleep50-21swapper/519:04:445
3944882994844,3cyclictest376480-21kworker/u16:1+flush-8:023:53:105
3944882993935,4cyclictest72894-21kworker/u16:1+flush-8:021:58:115
3944875993937,2cyclictest241304-21kworker/u16:1+events_unbound22:50:054
394440023929,7sleep60-21swapper/619:05:256
394440023929,7sleep60-21swapper/619:05:256
3944875993533,2cyclictest4055218-21kworker/u16:3+events_unbound20:03:354
3944875993533,2cyclictest3881316-21kworker/u16:1+flush-8:019:28:404
3944875993533,2cyclictest3881316-21kworker/u16:1+flush-8:019:28:404
3944875993533,2cyclictest361715-21kworker/u16:0+events_unbound23:53:124
3944875993432,2cyclictest426907-21kworker/u16:1+flush-8:000:28:044
3944875993432,2cyclictest36954-21kworker/u16:3+events_unbound22:09:084
3944875993432,2cyclictest253795-21kworker/u16:0+events_unbound23:00:054
3944875993432,2cyclictest253795-21kworker/u16:0+events_unbound23:00:054
3944888993327,5cyclictest648-21systemd-journal21:18:117
3944883993230,2cyclictest4055218-21kworker/u16:3+flush-8:021:03:116
3944875993230,2cyclictest36954-21kworker/u16:3+events_unbound22:47:054
3944875993230,2cyclictest327074-21kworker/u16:3+events_unbound23:32:124
3944875993230,2cyclictest289739-21kworker/u16:1+events_unbound23:19:244
3944875993230,2cyclictest241304-21kworker/u16:1+events_unbound22:56:284
3944875993230,2cyclictest241304-21kworker/u16:1+events_unbound22:56:284
3944875993230,2cyclictest170727-21kworker/u16:2+events_unbound22:35:334
3944882993126,5cyclictest253795-21kworker/u16:0+flush-8:023:03:105
3944882993126,5cyclictest253795-21kworker/u16:0+flush-8:023:03:105
3944875993129,2cyclictest388992-21kworker/u16:4+events_unbound00:22:294
3944875993129,2cyclictest388992-21kworker/u16:4+events_unbound00:22:294
3944875993129,2cyclictest327074-21kworker/u16:3+events_unbound23:27:054
3944875993128,2cyclictest3954162-21kworker/u16:3+events_unbound19:33:134
3944875993128,2cyclictest36954-21kworker/u16:3+flush-8:022:23:434
3944888993024,5cyclictest4094285-21latency_hist20:23:117
3944883993027,2cyclictest4113795-21kworker/u16:4+events_unbound20:43:256
3944875993028,2cyclictest72894-21kworker/u16:1+events_unbound22:02:574
3944875993028,2cyclictest4177273-21kworker/u16:0+events_unbound21:10:464
3944883992927,2cyclictest4103819-21kworker/u16:2+flush-8:020:28:116
3944875992927,2cyclictest426907-21kworker/u16:1+events_unbound00:34:404
3944875992927,2cyclictest4177273-21kworker/u16:0+events_unbound21:21:044
3944875992927,2cyclictest4161991-21kworker/u16:1+events_unbound20:58:124
3944875992927,2cyclictest361715-21kworker/u16:0+events_unbound00:00:284
3944875992927,2cyclictest158715-21kworker/u16:0+flush-8:022:40:494
3944875992927,2cyclictest158715-21kworker/u16:0+events_unbound22:22:004
3944875992927,2cyclictest158715-21kworker/u16:0+events_unbound22:22:004
3944875992826,2cyclictest4016703-21kworker/u16:2+events_unbound19:53:584
3944875992826,2cyclictest327074-21kworker/u16:3+flush-8:023:40:124
3944875992826,2cyclictest327074-21kworker/u16:3+flush-8:023:40:124
3944875992826,2cyclictest327074-21kworker/u16:3+events_unbound23:36:004
4108942270,1chrt410893-21ssh23:58:467
3944882992726,1cyclictest36954-21kworker/u16:3+events_unbound22:35:455
3944882992725,2cyclictest36954-21kworker/u16:3+flush-8:021:59:135
3944875992725,2cyclictest388992-21kworker/u16:4+events_unbound00:32:174
3944875992725,2cyclictest388992-21kworker/u16:4+events_unbound00:09:044
3944875992725,2cyclictest3881316-21kworker/u16:1+flush-8:019:11:304
3944875992725,2cyclictest255591-21kworker/u16:2+flush-8:023:13:154
3944875992724,2cyclictest4055218-21kworker/u16:3+flush-8:020:18:144
3944888992621,4cyclictest648-21systemd-journal22:58:117
3944888992621,4cyclictest648-21systemd-journal22:58:117
3944888992620,5cyclictest4016664-21latency_hist19:43:117
3944883992624,2cyclictest4026736-21kworker/u16:1+events_unbound19:58:306
3944883992624,2cyclictest327074-21kworker/u16:3+events_unbound23:43:286
3944882992624,2cyclictest361715-21kworker/u16:0+events_unbound23:54:215
3944875992625,1cyclictest36954-21kworker/u16:3+events_unbound21:49:364
3944875992624,2cyclictest72894-21kworker/u16:1+events_unbound22:05:124
3944875992624,2cyclictest4177273-21kworker/u16:0+events_unbound21:16:584
3944875992624,2cyclictest4065575-21kworker/u16:0+flush-8:020:09:014
3944875992624,2cyclictest4055218-21kworker/u16:3+events_unbound20:47:584
3944875992624,2cyclictest3954162-21kworker/u16:3+events_unbound19:20:584
3944875992624,2cyclictest376480-21kworker/u16:1+events_unbound23:51:354
3944875992624,2cyclictest36954-21kworker/u16:3+events_unbound22:15:024
3944875992624,2cyclictest22316-21kworker/u16:1+events_unbound21:31:144
3944875992624,2cyclictest22316-21kworker/u16:1+events_unbound21:24:564
3944875992624,2cyclictest192453-21kworker/u16:4+events_unbound23:07:444
3944888992524,0cyclictest0-21swapper/723:38:527
3944888992524,0cyclictest0-21swapper/723:38:527
3944888992524,0cyclictest0-21swapper/721:30:427
3944888992524,0cyclictest0-21swapper/700:25:477
3944883992522,2cyclictest4177273-21kworker/u16:0+flush-8:021:13:176
3944883992522,2cyclictest36954-21kworker/u16:3+events_unbound22:53:246
3944883992522,2cyclictest36954-21kworker/u16:3+events_unbound22:53:246
3944882992523,2cyclictest253795-21kworker/u16:0+flush-8:022:55:455
3944882992523,2cyclictest253795-21kworker/u16:0+flush-8:022:55:455
3944875992523,2cyclictest4113795-21kworker/u16:4+events_unbound20:56:014
3944875992523,2cyclictest361715-21kworker/u16:0+flush-8:000:04:474
3944888992423,0cyclictest0-21swapper/723:25:557
3944888992423,0cyclictest0-21swapper/722:23:117
3944888992423,0cyclictest0-21swapper/720:30:337
3944888992423,0cyclictest0-21swapper/700:06:307
3944888992419,4cyclictest648-21systemd-journal19:58:127
3944883992422,2cyclictest4055218-21kworker/u16:3+flush-8:020:03:426
3944883992422,2cyclictest3954162-21kworker/u16:3+flush-8:019:18:076
3944883992421,2cyclictest4177273-21kworker/u16:0+events_unbound21:58:336
3944882992422,2cyclictest255591-21kworker/u16:2+flush-8:023:23:355
3944882992421,2cyclictest327074-21kworker/u16:3+flush-8:023:43:325
3944875992422,2cyclictest4177273-21kworker/u16:0+flush-8:021:54:024
3944875992422,2cyclictest4093990-21kworker/u16:0+events_unbound20:52:054
3944875992422,2cyclictest388992-21kworker/u16:4+events_unbound00:17:324
3944875992422,2cyclictest192453-21kworker/u16:4+flush-8:023:12:084
3944888992322,0cyclictest0-21swapper/723:35:467
3944888992322,0cyclictest0-21swapper/723:18:547
3944888992322,0cyclictest0-21swapper/720:58:537
3944888992322,0cyclictest0-21swapper/719:12:097
3944883992321,2cyclictest3881316-21kworker/u16:1+flush-8:019:09:076
3944882992321,2cyclictest192453-21kworker/u16:4+flush-8:023:13:405
3944875992321,2cyclictest4177273-21kworker/u16:0+flush-8:021:44:154
3944875992321,2cyclictest4177273-21kworker/u16:0+flush-8:021:33:574
3944875992321,2cyclictest36954-21kworker/u16:3+events_unbound22:31:194
3944875992321,2cyclictest327074-21kworker/u16:3+events_unbound23:46:534
3944888992221,0cyclictest0-21swapper/720:51:187
3944888992221,0cyclictest0-21swapper/720:11:537
3944888992221,0cyclictest0-21swapper/719:34:277
3944888992221,0cyclictest0-21swapper/719:26:257
3944888992220,1cyclictest83219-21ssh21:43:527
3944883992220,2cyclictest36954-21kworker/u16:3+flush-8:022:48:066
3944882992220,2cyclictest4177273-21kworker/u16:0+events_unbound21:43:325
3944882992220,2cyclictest3977838-21kworker/u16:4+flush-8:019:28:425
3944882992220,2cyclictest3977838-21kworker/u16:4+flush-8:019:28:425
3944882992220,2cyclictest388992-21kworker/u16:4+events_unbound00:26:375
3944882992220,2cyclictest170727-21kworker/u16:2+events_unbound22:43:425
3944875992220,2cyclictest4177273-21kworker/u16:0+events_unbound21:06:264
3944875992220,2cyclictest4055218-21kworker/u16:3+events_unbound20:30:054
3944875992220,2cyclictest4026736-21kworker/u16:1+flush-8:019:51:064
3944875992220,2cyclictest4026736-21kworker/u16:1+events_unbound19:59:114
3944875992220,2cyclictest3977838-21kworker/u16:4+events_unbound19:41:264
3944875992220,2cyclictest3954162-21kworker/u16:3+events_unbound19:25:014
3944888992120,0cyclictest0-21swapper/723:44:407
3944888992120,0cyclictest0-21swapper/722:56:227
3944888992120,0cyclictest0-21swapper/722:56:227
3944888992120,0cyclictest0-21swapper/721:04:417
3944888992120,0cyclictest0-21swapper/720:15:067
3944888992120,0cyclictest0-21swapper/719:58:267
3944888992120,0cyclictest0-21swapper/719:44:057
3944888992120,0cyclictest0-21swapper/719:22:177
3944888992120,0cyclictest0-21swapper/700:34:057
3944888992119,1cyclictest0-21swapper/719:13:377
3944888992116,4cyclictest146245-21latency_hist22:13:117
394488899211,18cyclictest58122-21ssh21:33:357
3944883992119,2cyclictest426907-21kworker/u16:1+flush-8:000:13:346
3944882992119,2cyclictest4093990-21kworker/u16:0+events_unbound20:33:295
3944882992119,2cyclictest388992-21kworker/u16:4+flush-8:000:28:355
3944875992119,2cyclictest4177273-21kworker/u16:0+events_unbound21:42:384
3944875992119,2cyclictest4055218-21kworker/u16:3+events_unbound20:41:104
3944875992119,2cyclictest4006755-21kworker/u16:0+events_unbound19:46:134
3944888992019,0cyclictest0-21swapper/723:12:147
3944888992019,0cyclictest0-21swapper/720:39:097
3944883992018,2cyclictest4177273-21kworker/u16:0+events_unbound21:28:396
3944883992018,2cyclictest4065575-21kworker/u16:0+events_unbound20:08:246
3944883992018,2cyclictest4055218-21kworker/u16:3+flush-8:021:18:226
3944883992017,2cyclictest36954-21kworker/u16:3+flush-8:022:33:166
3944882992018,2cyclictest4113795-21kworker/u16:4+events_unbound20:58:285
3944882992018,2cyclictest36954-21kworker/u16:3+events_unbound22:38:455
3944882992017,2cyclictest388992-21kworker/u16:4+flush-8:023:58:265
3944875992018,2cyclictest3954162-21kworker/u16:3+flush-8:019:18:094
3944888991918,0cyclictest0-21swapper/723:28:447
3944888991918,0cyclictest0-21swapper/722:02:477
3944888991918,0cyclictest0-21swapper/720:05:017
3944888991913,5cyclictest4162253-21latency_hist20:58:117
3944883991917,2cyclictest4177273-21kworker/u16:0+events_unbound21:08:396
3944883991917,2cyclictest4055218-21kworker/u16:3+flush-8:020:53:366
3944883991917,2cyclictest4006755-21kworker/u16:0+flush-8:019:38:366
3944883991917,2cyclictest3881316-21kworker/u16:1+flush-8:019:28:376
3944883991917,2cyclictest3881316-21kworker/u16:1+flush-8:019:28:376
3944883991916,3cyclictest4055218-21kworker/u16:3+flush-8:020:18:266
3944882991917,2cyclictest72894-21kworker/u16:1+flush-8:022:08:495
3944882991917,2cyclictest35680-21kworker/u16:2+flush-8:021:28:275
3944888991817,0cyclictest0-21swapper/700:28:567
3944888991816,1cyclictest438201-21ssh00:13:167
3944883991816,2cyclictest72894-21kworker/u16:1+flush-8:022:13:356
3944883991816,2cyclictest72894-21kworker/u16:1+events_unbound22:03:386
3944882991816,2cyclictest4113795-21kworker/u16:4+events_unbound20:43:365
3944882991816,2cyclictest4055218-21kworker/u16:3+events_unbound21:13:365
3944882991815,2cyclictest170727-21kworker/u16:2+flush-8:022:48:325
3944875991816,2cyclictest4113795-21kworker/u16:4+flush-8:020:33:544
3944875991815,2cyclictest4016703-21kworker/u16:2+events_unbound20:13:154
3944888991715,1cyclictest0-21swapper/723:53:367
3944883991715,2cyclictest361715-21kworker/u16:0+flush-8:023:58:516
3944883991714,2cyclictest4055218-21kworker/u16:3+events_unbound20:48:336
394488399170,17cyclictest0-21swapper/623:48:356
3944882991715,2cyclictest59525-21kworker/u16:2+flush-8:021:41:205
3944882991714,3cyclictest85467-21kworker/u16:2+flush-8:021:48:385
3944882991714,2cyclictest36954-21kworker/u16:3+events_unbound22:28:215
3944875991715,2cyclictest4083674-21kworker/u16:1+flush-8:020:24:124
3944888991615,0cyclictest0-21swapper/720:27:547
3944888991615,0cyclictest0-21swapper/719:33:057
3944888991615,0cyclictest0-21swapper/719:33:057
3944888991614,1cyclictest70905-21ssh21:38:457
3944888991614,1cyclictest0-21swapper/722:13:117
3944888991614,1cyclictest0-21swapper/722:03:337
3944888991613,2cyclictest1302-21snmpd22:37:477
3944883991614,2cyclictest4016703-21kworker/u16:2+flush-8:019:48:426
3944883991614,2cyclictest36954-21kworker/u16:3+flush-8:021:48:286
3944883991614,2cyclictest289739-21kworker/u16:1+flush-8:023:23:386
3944883991614,2cyclictest255591-21kworker/u16:2+events_unbound23:03:346
3944883991614,2cyclictest253795-21kworker/u16:0+flush-8:023:08:376
3944883991614,2cyclictest22316-21kworker/u16:1+events_unbound21:33:366
3944882991614,2cyclictest327074-21kworker/u16:3+flush-8:023:33:485
3944888991513,1cyclictest0-21swapper/723:13:317
3944888991513,1cyclictest0-21swapper/722:38:267
3944883991513,2cyclictest426907-21kworker/u16:1+events_unbound00:18:296
3944883991513,2cyclictest426907-21kworker/u16:1+events_unbound00:18:296
3944882991513,2cyclictest426907-21kworker/u16:1+flush-8:000:13:365
3944882991513,2cyclictest426907-21kworker/u16:1+events_unbound00:33:205
3944882991513,2cyclictest4177273-21kworker/u16:0+events_unbound21:11:215
3944882991513,2cyclictest388897-21kworker/u16:3+events_unbound00:10:225
3944882991513,2cyclictest3881316-21kworker/u16:1+flush-8:019:13:505
3944883991411,2cyclictest388897-21kworker/u16:3+flush-8:000:03:346
394488399140,14cyclictest0-21swapper/621:42:526
3944882991413,1cyclictest0-21swapper/523:08:515
3944882991412,2cyclictest4006755-21kworker/u16:0+events_unbound19:48:265
3944882991411,2cyclictest4113795-21kworker/u16:4+events_unbound20:38:285
3944882991411,2cyclictest4093990-21kworker/u16:0+flush-8:020:53:285
3944882991411,2cyclictest255591-21kworker/u16:2+events_unbound23:03:365
3944882991411,2cyclictest22316-21kworker/u16:1+flush-8:021:33:225
394488299140,14cyclictest0-21swapper/522:06:545
394488899139,3cyclictest1302-21snmpd21:54:077
394488899139,3cyclictest1302-21snmpd19:51:507
3944888991313,0cyclictest0-21swapper/723:48:227
3944888991310,2cyclictest125-21kswapd000:12:017
394488399139,4cyclictest0-21swapper/623:21:416
3944883991312,1cyclictest0-21swapper/623:34:286
3944883991312,1cyclictest0-21swapper/621:57:396
3944883991312,1cyclictest0-21swapper/600:10:346
3944883991311,2cyclictest426907-21kworker/u16:1+events_unbound00:28:396
3944883991311,2cyclictest36954-21kworker/u16:3+events_unbound22:08:336
3944883991311,2cyclictest192453-21kworker/u16:4+events_unbound22:38:356
394488399130,13cyclictest0-21swapper/622:52:036
3944882991312,1cyclictest0-21swapper/522:24:055
3944882991311,2cyclictest4113795-21kworker/u16:4+flush-8:021:18:405
3944882991311,2cyclictest4083674-21kworker/u16:1+flush-8:020:18:345
3944882991311,2cyclictest36954-21kworker/u16:3+events_unbound22:18:355
3944882991311,2cyclictest36954-21kworker/u16:3+events_unbound22:18:355
394488299130,13cyclictest0-21swapper/522:14:285
394488299130,12cyclictest0-21swapper/519:18:215
394488899129,2cyclictest1302-21snmpd22:44:267
394488899129,2cyclictest1302-21snmpd22:31:477
394488899129,2cyclictest1302-21snmpd21:19:557
394488899129,2cyclictest1302-21snmpd00:19:267
394488899129,2cyclictest1302-21snmpd00:19:267
3944888991210,1cyclictest0-21swapper/721:23:387
394488399129,2cyclictest72894-21kworker/u16:1+flush-8:022:23:406
3944883991211,1cyclictest0-21swapper/622:29:026
3944883991211,1cyclictest0-21swapper/621:23:176
3944883991211,1cyclictest0-21swapper/619:18:256
3944883991210,2cyclictest426907-21kworker/u16:1+events_unbound00:23:246
3944883991210,2cyclictest3954162-21kworker/u16:3+events_unbound19:23:316
3944883991210,2cyclictest192453-21kworker/u16:4+flush-8:022:58:396
3944883991210,2cyclictest192453-21kworker/u16:4+flush-8:022:58:396
394488399120,12cyclictest0-21swapper/600:36:166
3944882991211,1cyclictest0-21swapper/500:22:395
3944882991211,1cyclictest0-21swapper/500:22:395
3944882991210,2cyclictest289739-21kworker/u16:1+flush-8:023:38:305
3944882991210,2cyclictest289739-21kworker/u16:1+flush-8:023:38:305
394488299120,1cyclictest0-21swapper/519:34:175
394488299120,11cyclictest422445-21ntpq00:03:385
394488899117,3cyclictest1302-21snmpd23:07:007
394488899117,3cyclictest1302-21snmpd21:49:287
394488899117,3cyclictest1302-21snmpd20:37:517
3944888991110,0cyclictest0-21swapper/722:48:417
3944888991110,0cyclictest0-21swapper/721:08:297
3944883991110,1cyclictest0-21swapper/621:46:096
3944883991110,1cyclictest0-21swapper/620:17:236
394488399110,10cyclictest4019779-21grep19:43:296
394488299119,2cyclictest289739-21kworker/u16:1+events_unbound23:30:225
3944882991110,1cyclictest0-21swapper/521:23:425
3944882991110,1cyclictest0-21swapper/520:29:465
3944882991110,1cyclictest0-21swapper/520:14:105
3944882991110,1cyclictest0-21swapper/519:26:525
394488299110,11cyclictest0-21swapper/519:44:505
394488299110,0cyclictest0-21swapper/520:25:415
394488299110,0cyclictest0-21swapper/520:01:055
394488899106,3cyclictest1302-21snmpd22:18:267
394488899106,3cyclictest1302-21snmpd22:18:267
3944888991010,0cyclictest0-21swapper/720:48:047
394488399109,1cyclictest0-21swapper/623:57:196
394488399107,2cyclictest293731-21sed23:13:306
394488399106,3cyclictest329728-21cat23:28:266
394488399100,3cyclictest358188-21kthreadcore23:38:306
394488399100,3cyclictest358188-21kthreadcore23:38:306
394488299109,1cyclictest0-21swapper/519:12:315
394488299108,2cyclictest4177273-21kworker/u16:0+events_unbound21:03:365
39448839998,1cyclictest0-21swapper/620:35:596
39448839994,4cyclictest4003453-21kthreadcore19:33:296
39448839990,8cyclictest0-21swapper/622:18:276
39448839990,8cyclictest0-21swapper/622:18:276
39448839990,8cyclictest0-21swapper/620:38:306
39448839990,8cyclictest0-21swapper/620:28:256
39448829998,1cyclictest0-21swapper/523:22:065
39448839984,3cyclictest4173122-21cat21:03:276
39448839983,4cyclictest4040608-21cut19:53:306
39448829984,3cyclictest4036454-21/usr/sbin/munin19:53:375
39448829983,4cyclictest4059855-21cut20:03:315
39448829983,4cyclictest4009473-21cut19:38:305
39448829980,7cyclictest4066243-21cut20:08:255
39448829975,1cyclictest0-21swapper/520:48:245
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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