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2026-04-17 - 00:32
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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 Thu Apr 16, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
180797127548,8sleep50-21swapper/507:06:145
1808527994539,5cyclictest2032591-21latency_hist09:04:537
18074812401,32sleep70-21swapper/707:05:277
1808527993735,1cyclictest0-21swapper/710:58:197
1808527993733,3cyclictest2530826-21ssh12:29:007
1808526993735,2cyclictest2419094-21kworker/u16:0+events_unbound11:48:406
1808526993735,2cyclictest2419094-21kworker/u16:0+events_unbound11:48:406
1808526993735,2cyclictest2126014-21kworker/u16:3+flush-8:009:43:366
180793423726,8sleep40-21swapper/407:05:404
1808527993635,0cyclictest0-21swapper/710:04:487
1808527993534,0cyclictest0-21swapper/709:37:097
1808527993533,1cyclictest2504719-21ssh12:16:047
1808527993533,1cyclictest0-21swapper/712:32:117
1808527993532,2cyclictest2125700-21ssh09:41:007
1808526993533,2cyclictest2189041-21kworker/u16:4+events_unbound10:11:176
1808527993433,0cyclictest0-21swapper/710:46:287
1808527993431,2cyclictest2077433-21ssh09:22:127
1808526993432,2cyclictest2370053-21kworker/u16:1+events_unbound12:04:526
1808526993432,2cyclictest2311903-21kworker/u16:4+flush-8:012:12:556
1808526993432,2cyclictest2272525-21kworker/u16:0+events_unbound11:06:086
1808526993432,2cyclictest2272525-21kworker/u16:0+events_unbound11:06:086
1808526993432,2cyclictest2272525-21kworker/u16:0+events_unbound11:02:596
1808526993432,2cyclictest2025242-21kworker/u16:1+events_unbound09:12:206
1808526993432,2cyclictest1917210-21kworker/u16:2+events_unbound09:58:296
1808527993332,0cyclictest0-21swapper/710:32:087
1808527993331,1cyclictest2469208-21ssh12:03:047
1808527993328,4cyclictest2213533-21latency_hist10:19:537
1808526993331,2cyclictest2272525-21kworker/u16:0+flush-8:010:41:486
1808526993331,2cyclictest2189041-21kworker/u16:4+flush-8:010:38:436
1808526993331,2cyclictest1917210-21kworker/u16:2+events_unbound10:19:456
1808526993327,6cyclictest2311903-21kworker/u16:4+flush-8:012:05:556
1808527993231,0cyclictest0-21swapper/711:13:247
1808527993231,0cyclictest0-21swapper/710:36:497
1808527993231,0cyclictest0-21swapper/710:22:337
1808527993231,0cyclictest0-21swapper/710:07:077
1808527993229,2cyclictest2162838-21ssh09:56:577
1808526993230,2cyclictest2470278-21kworker/u16:2+events_unbound12:32:566
1808526993230,2cyclictest2454902-21kworker/u16:0+flush-8:011:55:526
1808526993230,2cyclictest2370053-21kworker/u16:1+events_unbound12:18:366
1808526993230,2cyclictest2370053-21kworker/u16:1+events_unbound11:39:006
1808526993230,2cyclictest2370053-21kworker/u16:1+events_unbound11:26:336
1808526993230,2cyclictest2311903-21kworker/u16:4+events_unbound11:33:326
1808526993230,2cyclictest1917210-21kworker/u16:2+flush-8:011:10:476
1808526993230,2cyclictest1917210-21kworker/u16:2+events_unbound09:19:406
1808527993130,0cyclictest0-21swapper/712:37:447
1808527993130,0cyclictest0-21swapper/711:37:247
1808527993130,0cyclictest0-21swapper/711:24:117
1808527993130,0cyclictest0-21swapper/711:09:207
1808527993130,0cyclictest0-21swapper/711:09:207
1808527993130,0cyclictest0-21swapper/710:14:237
1808527993129,1cyclictest2517535-21ssh12:22:007
1808526993129,2cyclictest2470278-21kworker/u16:2+flush-8:012:21:326
1808526993129,2cyclictest2272525-21kworker/u16:0+events_unbound10:53:326
1808526993129,2cyclictest2272525-21kworker/u16:0+events_unbound10:47:116
1808526993129,2cyclictest2189042-21kworker/u16:5+events_unbound10:22:596
1808526993129,2cyclictest2126014-21kworker/u16:3+events_unbound09:47:486
1808526993128,2cyclictest1917210-21kworker/u16:2+flush-8:009:50:006
1808527993029,0cyclictest0-21swapper/711:46:327
1808527993029,0cyclictest0-21swapper/711:46:327
1808527993029,0cyclictest0-21swapper/711:03:127
1808527993029,0cyclictest0-21swapper/710:52:167
1808527993029,0cyclictest0-21swapper/709:32:337
1808527993028,1cyclictest0-21swapper/712:13:417
1808527993028,1cyclictest0-21swapper/710:42:377
1808526993028,2cyclictest2311903-21kworker/u16:4+events_unbound11:21:196
1808526993028,2cyclictest2103827-21kworker/u16:0+flush-8:009:36:516
1808526993028,2cyclictest2079244-21kworker/u16:1+events_unbound09:27:056
1808526993028,2cyclictest2064343-21kworker/u16:3+flush-8:009:32:196
1808526993028,2cyclictest1917210-21kworker/u16:2+events_unbound10:32:166
1808526993028,2cyclictest1917210-21kworker/u16:2+events_unbound10:04:526
1808527992928,0cyclictest0-21swapper/709:53:487
1808527992928,0cyclictest0-21swapper/709:46:127
1808526992927,2cyclictest2370053-21kworker/u16:1+flush-8:011:41:316
1808527992827,0cyclictest0-21swapper/711:41:447
1808527992827,0cyclictest0-21swapper/709:17:487
1808527992827,0cyclictest0-21swapper/709:09:537
1808526992826,2cyclictest2311903-21kworker/u16:4+events_unbound11:15:476
1808526992826,2cyclictest1091167-21kworker/u16:1+flush-8:007:12:326
1808527992726,0cyclictest0-21swapper/711:28:587
1808527992726,0cyclictest0-21swapper/709:26:447
1808527992724,2cyclictest2395742-21ssh11:32:317
1808526992725,2cyclictest2311903-21kworker/u16:4+flush-8:011:52:216
1808526992725,2cyclictest2311903-21kworker/u16:4+flush-8:011:52:216
1808526992725,2cyclictest1965706-21kworker/u16:0+flush-8:009:02:536
1808526992725,2cyclictest1937139-21kworker/u16:3+events_unbound08:24:336
1808526992725,2cyclictest1917210-21kworker/u16:2+flush-8:010:08:206
1808526992725,2cyclictest1898705-21kworker/u16:1+flush-8:008:12:326
1808526992725,2cyclictest1787320-21kworker/u16:0+events_unbound08:08:046
1808527992625,0cyclictest0-21swapper/711:54:397
1808527992625,0cyclictest0-21swapper/711:54:397
1808527992625,0cyclictest0-21swapper/711:18:037
1808527992625,0cyclictest0-21swapper/709:11:207
1808526992624,2cyclictest1937139-21kworker/u16:3+flush-8:008:16:176
1808526992623,2cyclictest2470278-21kworker/u16:2+flush-8:012:35:006
1808517992624,2cyclictest1091167-21kworker/u16:1+flush-8:007:14:594
180807722616,7sleep60-21swapper/607:07:436
1808527992524,0cyclictest0-21swapper/710:27:237
1808526992523,2cyclictest2238160-21kworker/u16:1+flush-8:010:56:336
1808526992523,2cyclictest1981591-21kworker/u16:4+events_unbound08:38:336
1808526992523,2cyclictest1917210-21kworker/u16:2+flush-8:010:28:336
1808517992522,3cyclictest1787320-21kworker/u16:0+flush-8:008:00:564
1808527992423,0cyclictest0-21swapper/712:05:317
1808526992422,2cyclictest2470278-21kworker/u16:2+events_unbound12:26:106
1808527992322,0cyclictest0-21swapper/707:14:257
1808526992321,2cyclictest1917210-21kworker/u16:2+events_unbound08:33:056
1808526992321,2cyclictest1787320-21kworker/u16:0+flush-8:007:32:116
1808526992321,2cyclictest1787320-21kworker/u16:0+flush-8:007:32:116
1808526992321,2cyclictest1787320-21kworker/u16:0+events_unbound07:15:046
1808527992220,1cyclictest2457109-21ssh11:58:137
1808526992119,2cyclictest1965706-21kworker/u16:0+flush-8:009:20:496
1808527992014,5cyclictest635-21systemd-journal07:29:537
1808526992018,2cyclictest1937139-21kworker/u16:3+flush-8:008:28:246
1808526992018,2cyclictest1898705-21kworker/u16:1+flush-8:008:02:286
1808527991915,3cyclictest1888737-21dump-pmu-power07:49:537
1808526991917,2cyclictest1917210-21kworker/u16:2+events_unbound08:48:206
1808527991817,0cyclictest0-21swapper/708:09:367
1808527991817,0cyclictest0-21swapper/707:40:007
1808526991816,2cyclictest1965706-21kworker/u16:0+flush-8:008:49:546
1808526991816,2cyclictest1917210-21kworker/u16:2+flush-8:008:41:126
1808526991816,2cyclictest1840464-21kworker/u16:3+flush-8:007:52:186
1808527991716,0cyclictest0-21swapper/708:54:257
1808527991716,0cyclictest0-21swapper/708:15:247
1808527991716,0cyclictest0-21swapper/708:10:077
180852799170,1cyclictest0-21swapper/708:45:167
180852799170,1cyclictest0-21swapper/707:55:217
180852799170,15cyclictest0-21swapper/708:40:177
1808526991715,2cyclictest2025242-21kworker/u16:1+events_unbound09:06:576
1808526991715,2cyclictest1840464-21kworker/u16:3+flush-8:007:38:086
180852799168,7cyclictest6101-21gmain08:35:117
1808527991612,3cyclictest1234-21snmpd07:21:517
180852799160,14cyclictest2023000-21awk08:59:537
1808526991614,2cyclictest1091167-21kworker/u16:1+events_unbound07:28:536
1808527991514,0cyclictest0-21swapper/707:50:147
1808526991513,2cyclictest1840464-21kworker/u16:3+flush-8:007:58:376
1808525991512,3cyclictest1917210-21kworker/u16:2+flush-8:010:19:495
180852799147,6cyclictest6895-21gmain07:30:197
180852799147,6cyclictest6895-21gmain07:30:197
180852799140,13cyclictest1869581-21latency_hist07:39:537
1808526991412,2cyclictest1840464-21kworker/u16:3+flush-8:007:23:176
1808525991413,1cyclictest0-21swapper/512:30:465
1808525991413,1cyclictest0-21swapper/510:05:435
180852599140,1cyclictest0-21swapper/510:59:385
180852599140,14cyclictest0-21swapper/509:15:545
1808517991413,1cyclictest0-21swapper/412:00:154
1808517991413,1cyclictest0-21swapper/410:33:414
180851799140,1cyclictest0-21swapper/409:42:364
180851799140,1cyclictest0-21swapper/409:28:254
180851799140,14cyclictest0-21swapper/411:18:184
180851799140,14cyclictest0-21swapper/410:53:144
180851799140,14cyclictest0-21swapper/410:15:334
180851799140,14cyclictest0-21swapper/410:06:254
180851799140,14cyclictest0-21swapper/409:57:544
180851799140,13cyclictest0-21swapper/409:19:544
180852799139,3cyclictest1234-21snmpd08:30:107
1808527991310,2cyclictest0-21swapper/708:00:567
1808526991311,2cyclictest1917210-21kworker/u16:2+flush-8:008:59:396
1808525991312,1cyclictest0-21swapper/512:06:395
1808525991312,1cyclictest0-21swapper/511:25:495
1808525991312,1cyclictest0-21swapper/509:56:445
1808525991311,2cyclictest1917210-21kworker/u16:2+flush-8:010:29:535
180852599130,13cyclictest0-21swapper/510:35:405
180852599130,13cyclictest0-21swapper/509:48:045
180852599130,13cyclictest0-21swapper/509:32:275
1808517991312,1cyclictest0-21swapper/412:21:514
1808517991312,1cyclictest0-21swapper/410:24:424
1808517991310,2cyclictest2024202-21irqcore09:00:074
180851799130,13cyclictest0-21swapper/410:43:094
180851799130,13cyclictest0-21swapper/408:32:174
180851799130,0cyclictest0-21swapper/409:35:214
180852799129,2cyclictest1234-21snmpd08:25:257
1808526991210,2cyclictest1840464-21kworker/u16:3+flush-8:007:41:486
180852599128,3cyclictest1937139-21kworker/u16:3+flush-8:008:25:195
180852599128,3cyclictest1832398-21cat07:20:075
1808525991211,1cyclictest0-21swapper/511:12:345
180852599120,1cyclictest0-21swapper/508:07:285
1808517991211,1cyclictest0-21swapper/411:29:304
1808517991211,1cyclictest0-21swapper/411:05:514
1808517991211,1cyclictest0-21swapper/411:05:514
180852799117,3cyclictest1234-21snmpd07:15:277
180852699119,2cyclictest1850518-21kworker/u16:4+flush-8:007:44:596
180852599117,3cyclictest2365485-21cut11:20:135
1808525991110,1cyclictest0-21swapper/510:46:525
1808525991110,1cyclictest0-21swapper/509:39:525
1808525991110,1cyclictest0-21swapper/509:24:535
180852599110,11cyclictest0-21swapper/509:06:175
180852599110,11cyclictest0-21swapper/508:32:425
1808517991110,1cyclictest0-21swapper/408:12:354
1808517991110,1cyclictest0-21swapper/407:53:404
180851799110,11cyclictest0-21swapper/408:54:314
180852799105,4cyclictest1234-21snmpd08:20:017
180851799109,1cyclictest0-21swapper/409:12:014
180851799105,4cyclictest1870585-21tune2fs07:40:064
18085259998,1cyclictest0-21swapper/508:55:525
18085179996,2cyclictest1957198-21irqcore08:25:094
18085179995,3cyclictest2544811-21cat12:35:084
18085179994,4cyclictest2471590-21awk12:05:094
18085179994,4cyclictest2434212-21/usr/sbin/munin11:50:154
18085179994,4cyclictest2434212-21/usr/sbin/munin11:50:154
18085179994,4cyclictest2364675-21grep11:20:134
18085179991,1cyclictest0-21swapper/411:45:214
18085179991,1cyclictest0-21swapper/411:45:214
18085259986,1cyclictest0-21swapper/509:50:115
18085259986,1cyclictest0-21swapper/507:25:095
18085259985,2cyclictest2520392-21gltestperf12:25:055
18085259985,2cyclictest0-21swapper/507:45:125
18085259984,3cyclictest2190528-21ps10:10:095
18085259984,3cyclictest1995423-21if_err_p4p108:45:085
18085259983,4cyclictest2553024-21unixbench-2d12:35:215
18085259983,4cyclictest2503666-21cat12:15:165
18085259983,4cyclictest2439945-21kthreadcore11:50:135
18085259983,4cyclictest2439945-21kthreadcore11:50:135
18085259983,4cyclictest2422930-21sed11:45:095
18085259983,4cyclictest2422930-21sed11:45:095
18085259983,4cyclictest2398558-21sed11:35:105
18085259983,4cyclictest2348890-21grep11:15:055
18085259983,4cyclictest2241933-21cat10:30:125
18085259983,4cyclictest2170814-21cut10:00:125
18085259983,4cyclictest2118909-21cut09:40:115
18085259983,4cyclictest2080389-21sed09:25:085
18085259983,4cyclictest2024120-21sed09:00:055
18085259983,4cyclictest2004425-21grep08:50:065
18085259983,4cyclictest1987553-21cat08:40:115
18085259983,4cyclictest1937274-21cat08:15:055
18085259983,4cyclictest1907305-21wc07:55:235
18085259983,4cyclictest1874313-21kthreadcore07:40:115
18085259983,4cyclictest1822186-21wc07:15:065
18085259980,3cyclictest23168522grep11:00:135
18085259980,2cyclictest0-21swapper/508:20:115
18085179987,1cyclictest0-21swapper/409:49:524
18085179986,1cyclictest0-21swapper/412:30:104
18085179986,1cyclictest0-21swapper/410:55:134
18085179986,1cyclictest0-21swapper/410:35:084
18085179986,1cyclictest0-21swapper/410:25:064
18085179986,1cyclictest0-21swapper/408:40:054
18085179986,1cyclictest0-21swapper/407:55:064
18085179985,2cyclictest0-21swapper/410:45:124
18085179984,3cyclictest2406131-21ntp_states11:35:194
18085179984,3cyclictest2386222-21sed11:30:094
18085179984,3cyclictest2148950-21sed09:50:134
18085179984,3cyclictest1885856-21kthreadcore07:45:124
18085179983,4cyclictest2519726-21cat12:25:034
18085179983,4cyclictest2499205-21grep12:15:114
18085179983,4cyclictest2484527-21tr12:10:084
18085179983,4cyclictest2446853-21expr11:55:054
18085179983,4cyclictest2411876-21cut11:40:114
18085179983,4cyclictest2314301-21cut11:00:114
18085179983,4cyclictest2197113-21grep10:10:134
18085179983,4cyclictest2171556-21cut10:00:124
18085179983,4cyclictest2036866-21cut09:05:124
18085179983,4cyclictest2002447-21cut08:45:144
18085179983,4cyclictest1941429-21cut08:15:124
18085179983,4cyclictest1918662-21tune2fs08:05:084
18085179983,4cyclictest1855094-21grep07:30:114
18085179983,4cyclictest1855094-21grep07:30:114
18085179983,4cyclictest1841424-21cpuspeed_turbos07:25:044
18085179983,4cyclictest1840021-21smart_sda07:20:194
18085179980,7cyclictest1861071-21fschecks_time07:35:094
18085179980,7cyclictest1808915-21cpuspeed_turbos07:10:044
18085259975,1cyclictest0-21swapper/512:00:105
18085259975,1cyclictest0-21swapper/511:30:095
18085259974,2cyclictest2483542-21fschecks_count12:10:055
18085259974,2cyclictest1975479-21cpu08:35:055
18085259973,3cyclictest2446730-21cat11:55:055
18085259973,3cyclictest2412611-21cut11:40:115
18085259973,3cyclictest2288974-21cut10:50:115
18085259973,3cyclictest2263219-21cpuspeed_turbos10:40:055
18085259973,3cyclictest2215303-21kthreadcore10:20:085
18085259973,3cyclictest1928000-21expr08:10:065
18085259973,3cyclictest1908610-21expr08:00:055
18085259973,3cyclictest1862099-21grep07:35:125
18085259973,3cyclictest1851147-21expr07:30:055
18085259973,3cyclictest1851147-21expr07:30:055
18085259973,3cyclictest1809824-21cut07:10:095
18085259972,4cyclictest2507478-21cat12:20:055
18085259972,4cyclictest2324412-21cat11:05:065
18085259972,4cyclictest2324412-21cat11:05:065
18085259972,4cyclictest1889132-21wc07:50:055
18085259970,6cyclictest0-21swapper/509:10:105
18085179975,1cyclictest0-21swapper/409:30:094
18085179975,1cyclictest0-21swapper/409:15:064
18085179975,1cyclictest0-21swapper/408:35:064
18085179975,1cyclictest0-21swapper/408:20:054
18085179973,3cyclictest2013853-21sort08:55:054
18085179970,4cyclictest2337065-21df11:10:064
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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