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2026-01-09 - 02:38
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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 Fri Jan 09, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
143321025646,7sleep40-21swapper/419:07:574
143292825521,30sleep70-21swapper/719:03:597
1433550994944,4cyclictest1824695-21latency_hist22:28:107
1433550994740,5cyclictest1640591-21latency_hist20:53:107
1433550994640,5cyclictest1960184-21latency_hist23:38:107
143320324029,8sleep60-21swapper/619:07:516
143292624029,8sleep50-21swapper/519:03:575
1433541993834,3cyclictest1650454-21kworker/u16:0+flush-8:021:03:105
1433543993735,2cyclictest1592616-21kworker/u16:0+events_unbound20:48:246
1433541993733,3cyclictest1843692-21kworker/u16:0+flush-8:023:18:105
1433541993634,2cyclictest1903730-21kworker/u16:2+flush-8:023:33:055
1433543993230,2cyclictest1853852-21kworker/u16:1+events_unbound22:58:236
1433536993228,3cyclictest1903730-21kworker/u16:2+flush-8:023:28:294
1433543993129,2cyclictest1524695-21kworker/u16:4+events_unbound19:58:226
1433541992826,2cyclictest1690278-21kworker/u16:1+events_unbound21:53:345
1433536992723,3cyclictest1671281-21kworker/u16:4+flush-8:021:20:254
1433550992625,0cyclictest0-21swapper/723:58:257
1433541992623,2cyclictest1671281-21kworker/u16:4+events_unbound21:18:245
1433543992523,2cyclictest1766248-21kworker/u16:3+events_unbound22:04:046
1433541992521,3cyclictest1309853-21kworker/u16:1+flush-8:019:23:415
1433543992422,2cyclictest1671281-21kworker/u16:4+events_unbound21:38:226
1433541992422,2cyclictest1766248-21kworker/u16:3+events_unbound22:38:375
1433541992422,2cyclictest1403443-21kworker/u16:0+events_unbound19:18:245
1433541992421,2cyclictest1582751-21kworker/u16:2+flush-8:021:08:365
1433550992318,4cyclictest650-21systemd-journal20:33:057
1433541992321,2cyclictest2037590-21kworker/u16:3+flush-8:000:28:105
1433536992319,3cyclictest1998121-21kworker/u16:2+flush-8:000:16:014
1433550992221,0cyclictest0-21swapper/722:08:367
1433550992221,0cyclictest0-21swapper/721:33:367
1433550992216,5cyclictest1443013-21latency_hist19:13:107
1433543992219,2cyclictest1843692-21kworker/u16:0+events_unbound23:48:126
1433543992119,2cyclictest1853852-21kworker/u16:1+events_unbound23:58:396
1433543992119,2cyclictest1766248-21kworker/u16:3+events_unbound21:58:046
1433541992118,2cyclictest1650454-21kworker/u16:0+events_unbound21:13:255
1433550992014,5cyclictest1708415-21latency_hist21:28:117
1433541992018,2cyclictest1853852-21kworker/u16:1+events_unbound23:48:335
1433550991918,0cyclictest0-21swapper/721:18:267
1433550991916,1cyclictest1853848-21latency_hist22:43:107
1433550991914,4cyclictest650-21systemd-journal21:43:057
1433550991914,4cyclictest1950512-21latency_hist23:33:107
1433543991917,2cyclictest1903730-21kworker/u16:2+events_unbound23:28:256
1433541991917,2cyclictest1403443-21kworker/u16:0+flush-8:020:13:415
1433541991917,2cyclictest1403443-21kworker/u16:0+flush-8:020:13:415
1433543991816,2cyclictest1805653-21kworker/u16:2+events_unbound22:18:226
1433543991816,2cyclictest1523970-21kworker/u16:1+events_unbound20:13:486
1433543991816,2cyclictest1523970-21kworker/u16:1+events_unbound20:13:486
1433541991816,2cyclictest1853852-21kworker/u16:1+flush-8:023:38:415
1433541991816,2cyclictest1582751-21kworker/u16:2+flush-8:020:48:365
1433541991816,2cyclictest1456743-21kworker/u16:3+events_unbound20:03:335
1433541991816,2cyclictest1403443-21kworker/u16:0+flush-8:020:08:335
1433550991716,0cyclictest0-21swapper/720:39:097
1433550991715,1cyclictest0-21swapper/723:23:307
1433550991711,5cyclictest1931181-21latency_hist23:23:107
143355099170,16cyclictest1267-21snmpd22:06:357
1433543991715,2cyclictest1592616-21kworker/u16:0+events_unbound20:28:476
1433543991715,2cyclictest1309853-21kworker/u16:1+events_unbound19:26:056
1433543991714,2cyclictest1843692-21kworker/u16:0+events_unbound22:38:126
1433541991713,3cyclictest1766248-21kworker/u16:3+events_unbound22:18:245
1433550991614,1cyclictest0-21swapper/719:53:237
1433543991614,2cyclictest1998122-21kworker/u16:4+events_unbound00:08:006
1433543991614,2cyclictest1903730-21kworker/u16:2+events_unbound23:19:206
1433543991614,2cyclictest1843692-21kworker/u16:0+events_unbound23:09:186
1433543991614,2cyclictest1843692-21kworker/u16:0+events_unbound22:34:046
1433543991614,2cyclictest1843692-21kworker/u16:0+events_unbound22:34:046
1433543991614,2cyclictest1766248-21kworker/u16:3+events_unbound22:00:296
1433543991614,2cyclictest1671281-21kworker/u16:4+events_unbound21:31:106
1433543991614,2cyclictest1650454-21kworker/u16:0+events_unbound21:16:216
1433543991614,2cyclictest1582751-21kworker/u16:2+events_unbound20:44:246
1433543991614,2cyclictest1424798-21kworker/u16:2+events_unbound19:10:026
1433541991614,2cyclictest1582751-21kworker/u16:2+flush-8:020:38:365
143355099157,7cyclictest5944-21gmain00:03:327
1433550991514,0cyclictest0-21swapper/722:59:367
1433550991514,0cyclictest0-21swapper/720:53:217
1433550991513,1cyclictest0-21swapper/720:23:297
1433550991512,2cyclictest0-21swapper/722:53:117
1433550991512,1cyclictest1524268-21munin-run19:53:117
143355099151,1cyclictest0-21swapper/719:18:347
143355099151,12cyclictest1610644-21netstat20:33:337
143355099150,13cyclictest0-21swapper/721:13:347
1433543991513,2cyclictest2037590-21kworker/u16:3+events_unbound00:36:046
1433543991513,2cyclictest1969934-21kworker/u16:3+events_unbound23:46:146
1433543991513,2cyclictest1853852-21kworker/u16:1+events_unbound23:06:226
1433543991513,2cyclictest1805653-21kworker/u16:2+events_unbound22:44:216
1433543991513,2cyclictest1785039-21kworker/u16:4+events_unbound22:14:086
1433543991513,2cyclictest1728120-21kworker/u16:0+events_unbound22:11:086
1433543991513,2cyclictest1671281-21kworker/u16:4+events_unbound21:48:266
1433543991513,2cyclictest1671281-21kworker/u16:4+events_unbound21:19:346
1433543991513,2cyclictest1621660-21kworker/u16:1+events_unbound20:54:206
1433543991513,2cyclictest1592616-21kworker/u16:0+events_unbound20:34:066
1433543991513,2cyclictest1582751-21kworker/u16:2+events_unbound21:05:306
1433543991513,2cyclictest1456743-21kworker/u16:3+events_unbound19:55:526
1433543991513,2cyclictest1456743-21kworker/u16:3+events_unbound19:32:306
1433543991513,2cyclictest1403443-21kworker/u16:0+events_unbound19:50:296
1433543991513,1cyclictest1700375-21ps21:23:266
143355099149,4cyclictest1747069-21latency_hist21:48:107
1433550991412,1cyclictest0-21swapper/700:23:357
1433550991410,3cyclictest1267-21snmpd00:22:417
1433550991410,2cyclictest2037762-21munin-run00:18:107
143355099140,1cyclictest0-21swapper/720:08:337
143355099140,12cyclictest0-21swapper/722:18:357
1433543991412,2cyclictest1998121-21kworker/u16:2+events_unbound00:15:456
1433543991412,2cyclictest1998121-21kworker/u16:2+events_unbound00:10:486
1433543991412,2cyclictest1903730-21kworker/u16:2+events_unbound23:42:046
1433543991412,2cyclictest1843692-21kworker/u16:0+events_unbound22:55:206
1433543991412,2cyclictest1766248-21kworker/u16:3+events_unbound22:24:416
1433543991412,2cyclictest1671281-21kworker/u16:4+events_unbound21:12:226
1433543991412,2cyclictest1523970-21kworker/u16:1+events_unbound20:04:496
1433543991412,2cyclictest1403443-21kworker/u16:0+events_unbound19:44:456
1433543991412,2cyclictest1309853-21kworker/u16:1+events_unbound19:41:266
1433543991412,1cyclictest1744098-21grep21:43:316
1433543991410,2cyclictest2037590-21kworker/u16:3+events_unbound00:18:216
1433541991412,2cyclictest2047584-21kworker/u16:0+flush-8:000:28:415
1433541991412,2cyclictest1592616-21kworker/u16:0+flush-8:020:28:385
1433541991412,2cyclictest1505328-21kworker/u16:2+flush-8:019:48:385
1433541991411,3cyclictest1853852-21kworker/u16:1+flush-8:023:58:355
1433541991411,2cyclictest1939897-21ntpq23:23:345
143354199140,13cyclictest0-21swapper/521:48:115
143353699149,4cyclictest1990415-21cat23:53:254
1433536991413,1cyclictest0-21swapper/421:53:364
1433536991413,1cyclictest0-21swapper/421:13:344
1433536991413,1cyclictest0-21swapper/420:28:284
1433536991413,1cyclictest0-21swapper/419:08:234
1433536991411,1cyclictest0-21swapper/422:58:344
1433536991411,1cyclictest0-21swapper/422:15:034
143355099139,3cyclictest1267-21snmpd23:15:317
143355099139,3cyclictest1267-21snmpd23:05:097
143355099139,3cyclictest1267-21snmpd22:50:007
143355099139,3cyclictest1267-21snmpd22:28:397
143355099137,5cyclictest1805264-21latency_hist22:18:117
143355099136,6cyclictest1433532-21cyclictest21:03:337
143355099136,6cyclictest0-21swapper/723:49:037
143355099133,8cyclictest1455418-21memory19:13:327
143355099132,9cyclictest0-21swapper/722:33:257
143355099132,9cyclictest0-21swapper/722:33:257
1433550991310,2cyclictest1267-21snmpd19:27:347
1433550991310,2cyclictest0-21swapper/700:33:107
143355099130,3cyclictest1498406-21grep19:38:277
143355099130,2cyclictest2060196-21grep00:28:287
143355099130,12cyclictest96-21ksoftirqd/723:38:317
1433543991311,2cyclictest1853852-21kworker/u16:1+events_unbound23:36:426
1433543991311,2cyclictest1853852-21kworker/u16:1+events_unbound23:27:056
1433543991311,2cyclictest1843692-21kworker/u16:0+events_unbound23:14:256
1433543991311,2cyclictest1805653-21kworker/u16:2+events_unbound22:30:016
1433543991311,2cyclictest1650454-21kworker/u16:0+events_unbound21:00:216
1433543991311,2cyclictest1582751-21kworker/u16:2+events_unbound21:34:006
1433543991311,2cyclictest1456743-21kworker/u16:3+events_unbound19:19:156
1433543991311,2cyclictest1403443-21kworker/u16:0+events_unbound19:35:426
1433543991310,2cyclictest1403443-21kworker/u16:0+events_unbound20:18:146
143354199139,3cyclictest1951683-21cat23:33:255
1433541991311,2cyclictest2027724-21kworker/u16:1+events_unbound00:18:255
1433541991311,2cyclictest1524695-21kworker/u16:4+flush-8:019:53:335
1433541991311,2cyclictest1403443-21kworker/u16:0+flush-8:020:18:335
1433541991311,2cyclictest1403443-21kworker/u16:0+events_unbound19:33:355
1433541991310,2cyclictest1403443-21kworker/u16:0+events_unbound19:08:285
1433536991312,1cyclictest0-21swapper/419:13:354
1433536991312,1cyclictest0-21swapper/400:23:324
143355099129,2cyclictest1267-21snmpd21:50:537
143355099129,2cyclictest0-21swapper/721:08:327
143355099127,4cyclictest1979618-21systemd-run23:48:107
143355099125,6cyclictest0-21swapper/720:03:167
1433550991211,0cyclictest0-21swapper/719:33:267
143355099120,11cyclictest1267-21snmpd20:44:307
143354399128,2cyclictest1853852-21kworker/u16:1+events_unbound22:51:046
1433543991210,2cyclictest2047584-21kworker/u16:0+events_unbound00:27:306
1433543991210,2cyclictest1843692-21kworker/u16:0+events_unbound23:56:146
1433543991210,2cyclictest1582751-21kworker/u16:2+events_unbound20:39:256
1433543991210,2cyclictest1523970-21kworker/u16:1+events_unbound20:24:126
1433543991210,2cyclictest1309853-21kworker/u16:1+events_unbound19:16:506
143354199129,3cyclictest1403443-21kworker/u16:0+flush-8:019:38:245
1433541991211,1cyclictest0-21swapper/523:44:045
1433541991211,1cyclictest0-21swapper/522:53:465
1433541991210,2cyclictest1805653-21kworker/u16:2+flush-8:022:28:585
143354199120,1cyclictest0-21swapper/522:51:535
143354199120,12cyclictest0-21swapper/519:29:375
143353699128,3cyclictest2000095-21cat23:58:244
1433536991211,1cyclictest0-21swapper/420:51:014
1433536991211,1cyclictest0-21swapper/419:58:314
143353699120,1cyclictest0-21swapper/423:39:334
143353699120,1cyclictest0-21swapper/422:26:524
143353699120,1cyclictest0-21swapper/421:24:554
143353699120,1cyclictest0-21swapper/420:35:534
143355099117,3cyclictest1267-21snmpd21:32:017
143355099117,3cyclictest1267-21snmpd19:46:497
143355099117,3cyclictest1267-21snmpd00:09:567
143355099116,4cyclictest96-21ksoftirqd/721:53:347
143355099115,5cyclictest6184-21gvfs-afc-volume20:13:267
143355099115,5cyclictest6184-21gvfs-afc-volume20:13:267
143355099111,2cyclictest1543369-21users19:58:387
143355099110,9cyclictest0-21swapper/722:43:237
143355099110,3cyclictest1116-21lldpd23:53:237
143354399119,1cyclictest2047584-21kworker/u16:0+events_unbound00:28:116
1433543991110,1cyclictest1561055-21cut20:08:306
143354199119,2cyclictest1690278-21kworker/u16:1+flush-8:021:28:345
143354199119,2cyclictest1690278-21kworker/u16:1+events_unbound21:58:225
143354199119,2cyclictest1582751-21kworker/u16:2+flush-8:021:03:295
143354199117,3cyclictest1854905-21cat22:43:265
1433541991110,1cyclictest0-21swapper/520:26:225
1433541991110,1cyclictest0-21swapper/519:58:375
1433541991110,1cyclictest0-21swapper/519:14:295
143353699117,3cyclictest1874315-21cat22:53:234
1433536991110,1cyclictest0-21swapper/423:43:394
1433536991110,1cyclictest0-21swapper/423:33:154
1433536991110,1cyclictest0-21swapper/423:24:534
1433536991110,1cyclictest0-21swapper/421:40:124
1433536991110,1cyclictest0-21swapper/421:28:424
1433536991110,1cyclictest0-21swapper/419:52:224
1433536991110,1cyclictest0-21swapper/419:39:274
143353699110,1cyclictest0-21swapper/423:49:574
143353699110,1cyclictest0-21swapper/400:03:124
143353699110,11cyclictest0-21swapper/422:28:464
143353699110,11cyclictest0-21swapper/420:47:144
143353699110,11cyclictest0-21swapper/419:47:394
143353699110,11cyclictest0-21swapper/419:21:194
143353699110,11cyclictest0-21swapper/400:32:314
143353699110,0cyclictest0-21swapper/421:59:264
17868592100,0sleep40-21swapper/422:08:244
143355099109,0cyclictest0-21swapper/721:58:277
143355099106,3cyclictest1267-21snmpd23:08:187
143355099104,5cyclictest6045-21gmain20:18:247
143355099103,6cyclictest0-21swapper/719:33:107
143355099100,8cyclictest0-21swapper/720:58:247
143354199109,1cyclictest0-21swapper/521:38:445
143354199109,1cyclictest0-21swapper/519:45:135
143354199109,1cyclictest0-21swapper/500:34:025
143354199108,1cyclictest2009743-21fschecks_time00:03:235
143354199107,2cyclictest5873-21gsd-housekeepin20:56:005
143353699109,1cyclictest0-21swapper/423:14:384
143353699109,1cyclictest0-21swapper/422:42:384
143353699109,1cyclictest0-21swapper/422:22:564
143353699109,1cyclictest0-21swapper/420:24:414
143353699109,1cyclictest0-21swapper/420:18:044
143353699109,1cyclictest0-21swapper/420:18:044
143353699100,8cyclictest1554116-21cut20:08:214
14335419997,2cyclictest1998122-21kworker/u16:4+flush-8:000:13:255
14335419995,3cyclictest1922602-21tune2fs23:18:225
14335419994,4cyclictest1997882-21needreboot23:53:325
14335419990,8cyclictest1803606-21cut22:13:315
14335369998,1cyclictest0-21swapper/422:44:324
14335369998,1cyclictest0-21swapper/421:51:434
14335369998,1cyclictest0-21swapper/421:36:254
14335369998,1cyclictest0-21swapper/420:56:514
14335369998,1cyclictest0-21swapper/419:56:284
14335369998,1cyclictest0-21swapper/400:21:204
14335369994,4cyclictest1777172-21fschecks_time22:03:244
14335369994,4cyclictest1651183-21grep20:58:234
14335369990,8cyclictest0-21swapper/400:33:284
14335419987,1cyclictest0-21swapper/522:26:305
14335419987,1cyclictest0-21swapper/520:44:395
14335419987,1cyclictest0-21swapper/500:09:555
14335419986,1cyclictest0-21swapper/521:43:225
14335419984,3cyclictest1781698-21cut22:03:295
14335419983,4cyclictest1910838-21nfs_client23:08:315
14335419983,4cyclictest1899830-21cut23:03:305
14335419983,4cyclictest1604263-21cut20:33:275
14335369987,1cyclictest0-21swapper/422:36:394
14335369987,1cyclictest0-21swapper/422:36:394
14335369984,3cyclictest1746731-21users21:43:394
14335369984,3cyclictest1618205-21kthreadcore20:38:304
14335369983,4cyclictest1930283-21open_inodes23:18:334
14335369983,4cyclictest1670297-21expr21:08:214
14335369983,4cyclictest1574362-21irqcore20:18:264
14335369983,4cyclictest1485983-21/usr/sbin/munin19:33:374
14335369983,4cyclictest1479249-21grep19:28:274
14335369983,4cyclictest1467848-21cut19:23:274
14335369980,7cyclictest2027716-21users00:08:404
14335369980,7cyclictest1661096-21smartctl21:03:254
14335419975,2cyclictest1728120-21kworker/u16:0+flush-8:022:08:275
14335419974,2cyclictest1887411-21kthreadcore22:58:285
14335419973,3cyclictest1699813-21cut21:23:245
14335419972,4cyclictest1835506-21cat22:33:255
14335419972,4cyclictest1835506-21cat22:33:255
14335419972,4cyclictest1718951-21cat21:33:235
14335369973,3cyclictest1864859-21cut22:48:264
14335369972,4cyclictest1902923-21cat23:08:214
14335369972,4cyclictest1894075-21irqcore23:03:274
14335369970,6cyclictest0-21swapper/420:03:284
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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