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2026-06-29 - 19:22
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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 100 highest latencies:
System rack0slot2.osadl.org (updated Mon Jun 29, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30128352990,0sleep40-21swapper/411:39:344
240104925747,7sleep40-21swapper/407:08:424
240090825646,7sleep50-21swapper/507:06:425
240096825420,29sleep70-21swapper/707:07:327
2401398995244,7cyclictest2735362-21latency_hist09:49:117
2401392994341,2cyclictest3078167-21kworker/u16:1+flush-8:012:14:415
2401393994239,3cyclictest2662012-21kworker/u16:3+flush-8:009:59:116
2401392994240,2cyclictest2870163-21kworker/u16:1+events_unbound10:59:305
2401392994240,2cyclictest2793552-21kworker/u16:0+events_unbound10:54:415
2401392994038,2cyclictest3078167-21kworker/u16:1+events_unbound12:09:325
240139899370,35cyclictest124-21kswapd011:24:117
2401392993735,2cyclictest3115123-21kworker/u16:2+flush-8:012:25:125
2401392993735,2cyclictest2903409-21kworker/u16:3+events_unbound12:07:345
2401392993735,2cyclictest2808063-21kworker/u16:1+events_unbound10:19:145
2401392993735,2cyclictest2662012-21kworker/u16:3+events_unbound10:09:145
2401392993734,2cyclictest2710593-21kworker/u16:5+events_unbound09:54:125
2401392993734,2cyclictest2662012-21kworker/u16:3+events_unbound09:29:135
2401393993634,2cyclictest2662012-21kworker/u16:3+flush-8:010:14:326
2401393993633,2cyclictest2531042-21kworker/u16:1+flush-8:009:44:376
2401392993635,1cyclictest2843272-21kworker/u16:2+events_unbound10:30:345
2401392993634,2cyclictest2793552-21kworker/u16:0+flush-8:010:24:375
2401392993634,2cyclictest2531042-21kworker/u16:1+events_unbound10:00:385
2401392993533,2cyclictest3115123-21kworker/u16:2+events_unbound12:34:055
2401392993533,2cyclictest2903409-21kworker/u16:3+events_unbound11:28:295
2401392993533,2cyclictest2903409-21kworker/u16:3+events_unbound11:12:415
2401392993533,2cyclictest2903408-21kworker/u16:2+events_unbound11:39:455
2401392993533,2cyclictest2710593-21kworker/u16:5+events_unbound10:35:205
2401392993533,2cyclictest2662012-21kworker/u16:3+events_unbound09:50:215
2401392993533,2cyclictest2531042-21kworker/u16:1+events_unbound09:45:225
2401393993432,2cyclictest2793552-21kworker/u16:0+flush-8:010:19:426
2401392993432,2cyclictest3002261-21kworker/u16:4+events_unbound11:46:225
2401392993432,2cyclictest2953413-21kworker/u16:0+events_unbound11:21:175
2401392993432,2cyclictest2903409-21kworker/u16:3+events_unbound12:37:265
2401392993432,2cyclictest2903409-21kworker/u16:3+events_unbound12:37:265
2401392993432,2cyclictest2793552-21kworker/u16:0+events_unbound10:47:255
2401392993431,2cyclictest2953413-21kworker/u16:0+events_unbound11:17:335
2401392993431,2cyclictest2953413-21kworker/u16:0+events_unbound11:17:335
26401492330,0chrt0-21swapper/409:09:314
2401392993331,2cyclictest3002261-21kworker/u16:4+events_unbound11:35:125
2401392993331,2cyclictest2953413-21kworker/u16:0+events_unbound11:33:015
2401392993331,2cyclictest2793552-21kworker/u16:0+events_unbound10:41:535
2401392993331,2cyclictest2608504-21kworker/u16:0+events_unbound09:11:225
2401392993331,2cyclictest2531042-21kworker/u16:1+events_unbound09:40:215
2401392993230,2cyclictest2903409-21kworker/u16:3+flush-8:012:20:015
2401392993230,2cyclictest2903408-21kworker/u16:2+events_unbound11:51:135
2401392993230,2cyclictest2870163-21kworker/u16:1+events_unbound10:51:415
2401392993230,2cyclictest2808063-21kworker/u16:1+events_unbound10:17:545
2401392993230,2cyclictest2608504-21kworker/u16:0+flush-8:009:19:315
2401387993230,1cyclictest1683352-21kworker/u16:2+events_unbound07:14:264
240088223221,8sleep60-21swapper/607:06:196
2401398993126,4cyclictest2870122-21latency_hist10:44:117
2401393993128,3cyclictest2531042-21kworker/u16:1+flush-8:009:39:376
2401392993129,2cyclictest3041865-21kworker/u16:0+events_unbound11:57:175
2401392993129,2cyclictest3041865-21kworker/u16:0+events_unbound11:57:175
2401392993129,2cyclictest2662012-21kworker/u16:3+flush-8:009:34:405
2401392993129,2cyclictest2598811-21kworker/u16:2+events_unbound09:28:225
2401392993028,2cyclictest2662012-21kworker/u16:3+flush-8:010:04:495
2401398992928,0cyclictest0-21swapper/712:09:247
2401392992927,2cyclictest2919109-21kworker/u16:4+flush-8:011:04:315
2401392992927,2cyclictest2903409-21kworker/u16:3+events_unbound12:01:335
2401392992927,2cyclictest2598811-21kworker/u16:2+events_unbound09:17:295
27832302280,1chrt2783231-21sh10:07:057
2401398992722,4cyclictest2472664-21latency_hist07:44:117
2401393992725,2cyclictest2559774-21kworker/u16:3+events_unbound08:34:416
2401392992624,2cyclictest2463026-21kworker/u16:0+events_unbound07:53:215
2401393992523,2cyclictest2903408-21kworker/u16:2+flush-8:011:19:116
2401393992523,2cyclictest2903408-21kworker/u16:2+flush-8:011:19:116
2401393992521,3cyclictest2903408-21kworker/u16:2+flush-8:011:54:116
2401392992523,2cyclictest2531042-21kworker/u16:1+events_unbound08:26:215
2401392992523,2cyclictest2482453-21kworker/u16:2+events_unbound08:37:215
2401398992419,4cyclictest2661585-21latency_hist09:19:117
2401398992318,4cyclictest650-21systemd-journal11:39:067
240139899230,21cyclictest2686232-21latency_hist09:29:117
2401392992321,2cyclictest2463026-21kworker/u16:0+events_unbound08:01:225
2401392992320,2cyclictest2401097-21kworker/u16:1+events_unbound07:29:215
28554102220,1sleep72855408-21grep10:34:467
2401392992220,2cyclictest2531042-21kworker/u16:1+events_unbound08:47:215
2401392992220,2cyclictest2401097-21kworker/u16:1+flush-8:007:19:075
2401393992119,2cyclictest2317258-21kworker/u16:3+flush-8:007:44:366
2401393992119,2cyclictest2317258-21kworker/u16:3+flush-8:007:44:366
2401392992119,2cyclictest2463026-21kworker/u16:0+events_unbound08:31:225
2401392992119,2cyclictest2317258-21kworker/u16:3+events_unbound07:44:415
2401392992119,2cyclictest2317258-21kworker/u16:3+events_unbound07:44:415
2401393992018,2cyclictest2903409-21kworker/u16:3+flush-8:011:14:066
2401392992018,2cyclictest2463026-21kworker/u16:0+events_unbound08:12:225
2401392992018,2cyclictest2317258-21kworker/u16:3+events_unbound08:08:225
28022962190,0sleep72802298-21kthreadcore10:14:347
2401387991918,1cyclictest2903409-21kworker/u16:3+events_unbound12:38:414
2401387991918,1cyclictest2903409-21kworker/u16:3+events_unbound12:38:414
2401398991815,2cyclictest2649446-21idleruntime-cro09:14:117
2401398991813,4cyclictest2759859-21latency_hist09:59:117
2401398991813,4cyclictest2747572-21latency_hist09:54:117
240139399180,1cyclictest0-21swapper/609:10:276
2401392991816,2cyclictest2482453-21kworker/u16:2+events_unbound08:21:225
2401393991715,2cyclictest2401097-21kworker/u16:1+flush-8:007:24:126
2401393991715,2cyclictest2317258-21kworker/u16:3+events_unbound08:04:246
2401392991716,1cyclictest2578725-21kworker/u16:4+events_unbound09:05:535
2401398991612,3cyclictest1278-21snmpd09:08:277
2401393991614,2cyclictest2710593-21kworker/u16:5+flush-8:010:34:296
2401392991614,2cyclictest2444038-21kworker/u16:2+events_unbound07:35:225
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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