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2026-05-19 - 00:42
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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 Mon May 18, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17165652483,39sleep70-21swapper/707:05:587
171662124333,7sleep40-21swapper/407:06:434
171640324128,9sleep50-21swapper/507:03:405
1716985993934,4cyclictest635-21systemd-journal10:20:037
1716975993937,2cyclictest2024819-21kworker/u16:4+events_unbound10:53:044
1716975993937,2cyclictest2024819-21kworker/u16:4+events_unbound10:53:044
1716979993836,2cyclictest1451199-21kworker/u16:0+flush-8:007:12:415
1716975993835,3cyclictest1749583-21kworker/u16:2+flush-8:010:37:464
1716979993735,2cyclictest1749583-21kworker/u16:2+events_unbound09:23:045
1716979993631,4cyclictest1749892-21kworker/u16:4+flush-8:007:42:475
1716985993532,2cyclictest124-21kswapd011:03:007
1716979993531,3cyclictest2231103-21pool-/usr/libex10:58:515
1716985993429,4cyclictest2270238-21latency_hist11:17:467
1716985993429,3cyclictest2058237-21ntpq09:48:137
1716975993432,2cyclictest2353504-21kworker/u16:2+flush-8:012:12:594
1716975993331,2cyclictest1973138-21kworker/u16:3+flush-8:009:28:014
1716985993227,4cyclictest2302100-21cut11:28:077
1716983993230,2cyclictest2231435-21kworker/u16:6+events_unbound10:59:296
1716985993026,3cyclictest2147431-21latency_hist10:27:467
1716983993027,3cyclictest1960155-21kworker/u16:0+flush-8:009:33:116
1716975993028,2cyclictest2221470-21kworker/u16:3+flush-8:011:08:114
1716975993028,2cyclictest1749892-21kworker/u16:4+flush-8:007:53:014
171665023020,7sleep60-21swapper/607:07:106
1716985992928,0cyclictest0-21swapper/709:52:567
1716985992927,1cyclictest2048816-21ssh09:47:127
1716985992827,0cyclictest0-21swapper/710:59:037
1716985992827,0cyclictest0-21swapper/710:43:157
1716985992825,2cyclictest1999203-21runrttasks09:26:127
1716983992826,2cyclictest2353504-21kworker/u16:2+flush-8:012:03:156
1716979992826,2cyclictest2231435-21kworker/u16:6+events_unbound11:48:045
1716979992826,2cyclictest1749892-21kworker/u16:4+events_unbound08:13:045
1716985992726,0cyclictest0-21swapper/712:13:057
1716985992726,0cyclictest0-21swapper/709:14:577
1716985992726,0cyclictest0-21swapper/707:18:177
1716985992722,4cyclictest635-21systemd-journal07:57:467
171698599270,25cyclictest1893458-21latency_hist08:37:467
1716983992725,2cyclictest2231435-21kworker/u16:6+flush-8:012:23:116
1716983992725,2cyclictest2024819-21kworker/u16:4+events_unbound10:18:156
1716979992725,2cyclictest1749583-21kworker/u16:2+flush-8:008:48:075
1716975992725,2cyclictest2231435-21kworker/u16:6+events_unbound12:08:104
171698599260,24cyclictest2318219-21ssh11:35:577
1716983992624,2cyclictest993476-21kworker/u16:1+flush-8:007:18:126
1716979992622,3cyclictest1749583-21kworker/u16:2+flush-8:010:28:055
1716975992624,2cyclictest1749892-21kworker/u16:4+flush-8:007:38:104
1716979992523,2cyclictest2231435-21kworker/u16:6+flush-8:012:19:595
1716979992523,2cyclictest2024820-21kworker/u16:5+flush-8:009:42:415
1716979992522,3cyclictest2135424-21kworker/u16:1+flush-8:011:28:155
1716975992523,2cyclictest2353504-21kworker/u16:2+events_unbound12:22:594
1716975992523,2cyclictest1960155-21kworker/u16:0+events_unbound09:38:014
1716985992423,0cyclictest0-21swapper/712:00:157
1716979992422,2cyclictest2024819-21kworker/u16:4+flush-8:010:13:105
1716979992421,2cyclictest1749892-21kworker/u16:4+flush-8:008:18:025
1716975992422,2cyclictest2024820-21kworker/u16:5+events_unbound09:58:014
1716975992422,2cyclictest1931599-21kworker/u16:1+flush-8:008:58:104
171698599231,21cyclictest1263-21dockerd09:35:277
1716983992321,2cyclictest2221470-21kworker/u16:3+flush-8:011:22:596
1716983992321,2cyclictest2135424-21kworker/u16:1+events_unbound11:07:596
1716983992321,2cyclictest2135424-21kworker/u16:1+events_unbound10:28:136
1716979992321,2cyclictest1912718-21kworker/u16:4+flush-8:009:07:415
1716985992221,0cyclictest0-21swapper/711:49:517
1716985992219,2cyclictest2452091-21ssh12:29:077
1716975992220,2cyclictest2157231-21kworker/u16:0+flush-8:010:29:034
1716975992220,2cyclictest2024819-21kworker/u16:4+events_unbound10:03:084
1716975992220,2cyclictest1874708-21kworker/u16:3+flush-8:008:28:024
1716975992220,2cyclictest1749583-21kworker/u16:2+events_unbound09:18:134
1716985992120,0cyclictest0-21swapper/711:40:237
1716983992118,2cyclictest2255647-21kworker/u16:0+flush-8:011:57:466
1716979992119,2cyclictest2135424-21kworker/u16:1+flush-8:011:18:015
1716979992119,2cyclictest1749583-21kworker/u16:2+flush-8:009:43:185
1716975992119,2cyclictest2255647-21kworker/u16:0+flush-8:011:48:054
1716975992119,2cyclictest2221470-21kworker/u16:3+flush-8:011:23:144
1716975992119,2cyclictest2049193-21kworker/u16:1+events_unbound10:08:134
1716975992119,2cyclictest1749892-21kworker/u16:4+flush-8:008:18:144
1716975992119,2cyclictest1749583-21kworker/u16:2+events_unbound10:17:414
1716975992119,2cyclictest1749583-21kworker/u16:2+events_unbound08:48:094
1716985992019,0cyclictest0-21swapper/708:08:157
1716985992018,1cyclictest1951173-21diskmemload11:44:247
1716983992018,2cyclictest1787996-21kworker/u16:1+flush-8:008:17:466
1716983992018,2cyclictest1717188-21kworker/u16:3+flush-8:007:08:136
1716983992018,2cyclictest1451199-21kworker/u16:0+flush-8:007:12:516
1716983992018,2cyclictest1451199-21kworker/u16:0+flush-8:007:12:516
1716979992018,2cyclictest2221470-21kworker/u16:3+flush-8:011:33:085
1716979992018,2cyclictest1717188-21kworker/u16:3+events_unbound07:33:005
1716979992018,2cyclictest1451199-21kworker/u16:0+flush-8:007:23:015
1716975992018,2cyclictest2024819-21kworker/u16:4+events_unbound10:50:514
1716975992018,2cyclictest2024819-21kworker/u16:4+events_unbound10:50:514
1716975992018,2cyclictest1787996-21kworker/u16:1+events_unbound07:48:074
1716975992016,3cyclictest1451199-21kworker/u16:0+flush-8:007:13:124
1716975992016,3cyclictest1451199-21kworker/u16:0+flush-8:007:13:124
1716985991918,0cyclictest0-21swapper/710:14:407
1716985991918,0cyclictest0-21swapper/709:39:137
1716985991917,1cyclictest0-21swapper/712:27:277
1716985991916,2cyclictest635-21systemd-journal10:28:427
1716985991914,4cyclictest635-21systemd-journal08:22:417
1716983991917,2cyclictest1973138-21kworker/u16:3+events_unbound09:18:016
1716983991917,2cyclictest1874708-21kworker/u16:3+flush-8:008:43:016
1716979991917,2cyclictest1912718-21kworker/u16:4+events_unbound09:08:095
1716979991917,2cyclictest1749892-21kworker/u16:4+flush-8:008:08:125
1716975991917,2cyclictest2353504-21kworker/u16:2+flush-8:012:36:274
1716975991917,2cyclictest2231435-21kworker/u16:6+events_unbound12:19:074
1716975991917,2cyclictest2221470-21kworker/u16:3+flush-8:011:42:464
1716975991917,2cyclictest2135424-21kworker/u16:1+flush-8:011:18:324
1716975991917,2cyclictest2135424-21kworker/u16:1+flush-8:011:13:094
1716975991917,2cyclictest2024819-21kworker/u16:4+flush-8:010:45:314
1716975991917,2cyclictest1749583-21kworker/u16:2+events_unbound10:57:594
1716975991917,2cyclictest1749583-21kworker/u16:2+events_unbound09:17:404
1716985991816,1cyclictest2427262-21ssh12:18:357
1716985991816,1cyclictest2207941-21ssh10:51:197
1716985991816,1cyclictest2207941-21ssh10:51:197
1716985991816,1cyclictest0-21swapper/709:20:457
171698599180,17cyclictest0-21swapper/708:03:107
1716979991816,2cyclictest2353504-21kworker/u16:2+flush-8:012:33:025
1716979991815,2cyclictest1749583-21kworker/u16:2+flush-8:007:58:065
1716975991816,2cyclictest993476-21kworker/u16:1+events_unbound07:18:114
1716975991816,2cyclictest2123173-21kworker/u16:0+flush-8:010:18:234
1716975991816,2cyclictest1893849-21kworker/u16:0+events_unbound08:53:084
1716975991816,2cyclictest1749583-21kworker/u16:2+events_unbound09:25:274
1716975991816,2cyclictest1749583-21kworker/u16:2+events_unbound09:11:074
1716985991716,0cyclictest0-21swapper/707:28:017
1716985991715,1cyclictest1951173-21diskmemload09:29:437
1716983991715,2cyclictest1451199-21kworker/u16:0+flush-8:007:33:126
1716983991713,3cyclictest1959201-21tr09:08:086
1716979991715,2cyclictest2353504-21kworker/u16:2+flush-8:011:53:115
1716975991715,2cyclictest2426455-21kworker/u16:0+flush-8:012:29:174
1716975991715,2cyclictest2255647-21kworker/u16:0+flush-8:011:33:164
1716975991715,2cyclictest2231435-21kworker/u16:6+flush-8:011:46:474
1716975991715,2cyclictest1787996-21kworker/u16:1+events_unbound08:08:014
1716975991715,2cyclictest1749892-21kworker/u16:4+events_unbound07:34:234
1716975991715,2cyclictest1749583-21kworker/u16:2+flush-8:009:55:514
171698599168,7cyclictest6895-21gmain07:42:597
1716985991615,0cyclictest0-21swapper/710:39:527
1716985991615,0cyclictest0-21swapper/710:01:247
1716985991614,1cyclictest0-21swapper/709:10:007
1716985991613,2cyclictest2219721-21ssh10:55:287
1716985991613,2cyclictest2219721-21ssh10:55:287
1716983991613,2cyclictest2221470-21kworker/u16:3+events_unbound11:43:116
1716979991614,2cyclictest2353504-21kworker/u16:2+flush-8:012:17:415
1716979991613,3cyclictest2135424-21kworker/u16:1+flush-8:011:09:145
171697999160,16cyclictest0-21swapper/512:28:085
1716975991614,2cyclictest993476-21kworker/u16:1+flush-8:007:08:094
1716975991614,2cyclictest2353504-21kworker/u16:2+flush-8:011:53:184
1716975991614,2cyclictest2135424-21kworker/u16:1+events_unbound11:28:364
1716975991614,2cyclictest2135424-21kworker/u16:1+events_unbound10:23:474
1716975991614,2cyclictest2009853-21kworker/u16:1+events_unbound09:33:004
1716975991614,2cyclictest1865105-21kworker/u16:0+events_unbound08:24:504
1716975991614,2cyclictest1749583-21kworker/u16:2+flush-8:009:48:364
1716975991614,2cyclictest1749583-21kworker/u16:2+flush-8:009:45:474
1716975991614,2cyclictest1749583-21kworker/u16:2+flush-8:008:03:154
171698599159,5cyclictest1807136-21latency_hist07:52:467
171698599157,6cyclictest6101-21gmain08:58:037
1716985991514,0cyclictest0-21swapper/712:11:117
1716985991514,0cyclictest0-21swapper/712:05:237
1716985991514,0cyclictest0-21swapper/710:35:277
1716985991514,0cyclictest0-21swapper/708:13:027
1716985991513,1cyclictest0-21swapper/711:20:207
1716983991513,2cyclictest2353504-21kworker/u16:2+events_unbound12:28:006
1716983991513,2cyclictest2135424-21kworker/u16:1+events_unbound10:43:026
1716983991512,2cyclictest1749583-21kworker/u16:2+flush-8:009:43:126
1716979991513,2cyclictest2024819-21kworker/u16:4+flush-8:009:57:525
1716979991512,2cyclictest2124464-21irqstats10:18:035
1716975991513,2cyclictest2231435-21kworker/u16:6+flush-8:012:00:114
1716975991513,2cyclictest2231435-21kworker/u16:6+flush-8:011:05:554
1716975991513,2cyclictest2024819-21kworker/u16:4+events_unbound10:38:074
1716985991413,0cyclictest0-21swapper/711:08:367
1716985991413,0cyclictest0-21swapper/707:08:047
1716985991412,1cyclictest2282984-21ssh11:22:567
1716983991413,1cyclictest0-21swapper/612:11:016
1716983991413,1cyclictest0-21swapper/609:31:096
1716983991411,2cyclictest1749583-21kworker/u16:2+flush-8:007:58:116
1716983991410,4cyclictest0-21swapper/611:37:356
171698399140,1cyclictest0-21swapper/610:14:216
171698399140,13cyclictest0-21swapper/608:58:116
1716979991413,1cyclictest0-21swapper/509:29:015
1716979991412,2cyclictest2231435-21kworker/u16:6+flush-8:012:08:055
1716979991412,2cyclictest2221470-21kworker/u16:3+flush-8:011:13:155
1716979991412,2cyclictest2135424-21kworker/u16:1+flush-8:011:03:115
1716979991411,2cyclictest1717188-21kworker/u16:3+events_unbound07:28:015
171697999140,1cyclictest0-21swapper/509:15:475
1716975991412,2cyclictest2255647-21kworker/u16:0+events_unbound12:06:074
1716975991412,2cyclictest1749892-21kworker/u16:4+flush-8:007:47:264
1716975991410,3cyclictest1931599-21kworker/u16:1+events_unbound09:03:044
171698599137,5cyclictest1874316-21latency_hist08:27:477
1716985991312,0cyclictest0-21swapper/709:03:107
1716985991312,0cyclictest0-21swapper/707:13:147
1716985991312,0cyclictest0-21swapper/707:13:147
1716983991312,1cyclictest0-21swapper/611:17:346
1716983991312,1cyclictest0-21swapper/609:59:226
1716983991311,2cyclictest86-21ksoftirqd/610:22:576
1716979991312,1cyclictest0-21swapper/510:41:045
1716979991311,2cyclictest1749583-21kworker/u16:2+flush-8:010:48:015
1716979991311,2cyclictest1749583-21kworker/u16:2+flush-8:010:48:015
1716979991311,2cyclictest1749583-21kworker/u16:2+events_unbound09:53:105
1716975991311,2cyclictest1787996-21kworker/u16:1+events_unbound07:58:274
171698599129,2cyclictest1234-21snmpd11:56:587
171698599129,2cyclictest1234-21snmpd08:28:347
171698599129,2cyclictest0-21swapper/707:57:467
171698599128,3cyclictest6895-21gmain10:03:157
171698599126,5cyclictest1922269-21latency_hist08:52:467
1716985991210,1cyclictest0-21swapper/710:09:137
171698399129,3cyclictest1749583-21kworker/u16:2+flush-8:009:48:186
171698399128,3cyclictest1765573-21kthreadcore07:28:066
171698399122,9cyclictest1789689-21cut07:43:036
1716983991211,1cyclictest0-21swapper/608:36:266
1716983991210,2cyclictest2024819-21kworker/u16:4+events_unbound09:38:116
1716983991210,2cyclictest1973138-21kworker/u16:3+flush-8:009:23:026
171697999128,3cyclictest1787996-21kworker/u16:1+flush-8:008:33:125
171697999127,4cyclictest2210123-21cat10:53:055
171697999127,4cyclictest2210123-21cat10:53:055
1716979991210,2cyclictest2353504-21kworker/u16:2+flush-8:011:58:075
1716975991210,2cyclictest1874708-21kworker/u16:3+events_unbound08:37:014
1716975991210,2cyclictest1787996-21kworker/u16:1+flush-8:008:17:414
1716975991210,2cyclictest1717188-21kworker/u16:3+events_unbound07:28:034
171698599118,2cyclictest1234-21snmpd08:45:147
171698599117,3cyclictest1234-21snmpd07:24:297
171698599116,4cyclictest6895-21gmain07:33:117
171698599116,4cyclictest5975-21gmain08:52:597
171698599116,4cyclictest1902119-21ntpq08:38:117
1716985991111,0cyclictest0-21swapper/712:36:477
171698399118,2cyclictest2095006-21ntpq10:03:116
171698399117,3cyclictest2406429-21cat12:13:006
171698399110,3cyclictest2463788-21/usr/sbin/munin12:33:156
171698399110,3cyclictest2179368-21kthreadcore10:38:066
171698399110,11cyclictest0-21swapper/608:05:046
171697999119,2cyclictest2255647-21kworker/u16:0+events_unbound11:47:275
171697999116,4cyclictest1831312-21cut08:03:065
171697599119,2cyclictest1874708-21kworker/u16:3+events_unbound08:46:434
171698599109,0cyclictest0-21swapper/707:38:027
171698399109,1cyclictest0-21swapper/610:52:396
171698399109,1cyclictest0-21swapper/610:52:396
171698399109,1cyclictest0-21swapper/607:37:476
171698399108,2cyclictest86-21ksoftirqd/612:17:556
171698399108,2cyclictest86-21ksoftirqd/610:12:166
171698399108,2cyclictest86-21ksoftirqd/609:13:126
171698399107,2cyclictest2270905-21cpuspeed_turbos11:17:576
171698399107,2cyclictest1797910-21/usr/sbin/munin07:48:146
171698399106,3cyclictest2352565-21latency11:48:086
171698399106,3cyclictest2210102-21cat10:53:056
171698399106,3cyclictest2210102-21cat10:53:056
171698399104,5cyclictest0-21swapper/611:03:056
171698399100,9cyclictest1927234-21kthreadcore08:53:066
171698399100,3cyclictest2325110-21kthreadcore11:38:036
171697999108,2cyclictest2135424-21kworker/u16:1+events_unbound11:37:575
171697999108,2cyclictest2024820-21kworker/u16:5+flush-8:010:08:015
171697999108,2cyclictest1874708-21kworker/u16:3+flush-8:008:42:595
171697999105,4cyclictest1749583-21kworker/u16:2+flush-8:008:27:465
171697599109,1cyclictest0-21swapper/407:23:514
171697599108,2cyclictest1749583-21kworker/u16:2+events_unbound08:38:544
17169839997,2cyclictest86-21ksoftirqd/611:57:516
17169839996,2cyclictest0-21swapper/611:27:586
17169839996,2cyclictest0-21swapper/608:23:066
17169839994,4cyclictest1895864-21cut08:38:036
17169839993,5cyclictest0-21swapper/608:28:046
17169839990,8cyclictest1942360-21cstates09:02:596
17169839990,3cyclictest2062130-21cpuspeed_turbos09:52:576
17169839990,2cyclictest1913041-21/usr/sbin/munin08:48:096
17169799997,2cyclictest2353504-21kworker/u16:2+events_unbound12:23:135
17169799997,2cyclictest1893849-21kworker/u16:0+flush-8:008:53:125
17169799994,4cyclictest1806218-21sh07:48:115
17169839985,2cyclictest2161108-21hddtemp_smartct10:33:016
17169839984,3cyclictest1750736-21cat07:23:016
17169839983,4cyclictest1844508-21missed_timers08:08:106
17169839980,7cyclictest1855518-21/usr/sbin/munin08:17:586
17169839980,7cyclictest1808044-21diskstats07:52:596
17169799986,2cyclictest2135424-21kworker/u16:1+flush-8:011:23:005
17169799983,4cyclictest2161269-21sed10:33:025
17169799983,4cyclictest2050445-21cat09:48:005
17169799983,4cyclictest1983240-21cut09:18:055
17169799983,4cyclictest1880626-21cut08:28:075
17169799983,4cyclictest1727129-21cut07:12:475
17169799983,4cyclictest1727129-21cut07:12:475
17169799975,1cyclictest0-21swapper/512:03:045
17169799975,1cyclictest0-21swapper/509:32:595
17169799975,1cyclictest0-21swapper/507:52:575
17169799974,2cyclictest1934793-21kthreadcore08:58:045
17169799973,3cyclictest2135752-21cpuspeed_turbos10:22:575
17169799973,3cyclictest2087350-21ps10:03:035
17169799973,3cyclictest1895237-21grep08:38:035
17169799973,3cyclictest1789147-21irqcore07:43:035
17169799972,4cyclictest1741421-21cut07:18:035
17169799962,3cyclictest2185243-21expr10:42:595
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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