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2026-03-06 - 13:47
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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 Fri Mar 06, 2026 12:43:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
320663721050,1sleep70-21swapper/707:29:427
37928652710,1sleep73792863-21ssh11:52:597
314835626453,7sleep60-21swapper/607:02:266
314835626453,7sleep60-21swapper/607:02:266
3148781996256,5cyclictest3467785-21latency_hist09:39:227
3148781994843,4cyclictest3733312-21latency_hist11:29:227
3148772994745,2cyclictest3784064-21kworker/u16:1+events_unbound12:31:164
3148778994643,2cyclictest3540197-21kworker/u16:4+flush-8:010:19:226
3148778994643,2cyclictest3540197-21kworker/u16:4+flush-8:010:19:226
626589450,38rtkit-daemon0-21swapper/407:01:054
626589450,38rtkit-daemon0-21swapper/407:01:054
3148778994543,2cyclictest3540197-21kworker/u16:4+flush-8:011:09:226
3148772994543,2cyclictest3722951-21kworker/u16:1+events_unbound11:32:274
3148772994543,2cyclictest3722951-21kworker/u16:1+events_unbound11:32:274
3148772994442,2cyclictest3443742-21kworker/u16:3+events_unbound09:37:324
3148772994442,2cyclictest3404717-21kworker/u16:2+events_unbound09:45:564
314878199430,41cyclictest3672888-21latency_hist11:04:227
3148772994341,2cyclictest3767899-21kworker/u16:0+events_unbound12:01:284
3148772994341,2cyclictest3354879-21kworker/u16:1+flush-8:009:59:224
3148772994340,2cyclictest3540197-21kworker/u16:4+events_unbound10:29:314
314826124331,8sleep50-21swapper/507:01:055
314826124331,8sleep50-21swapper/507:01:055
3148772994240,2cyclictest3369413-21kworker/u16:0+events_unbound09:27:324
3148772994240,2cyclictest3369413-21kworker/u16:0+events_unbound09:20:404
3148772994240,2cyclictest3354879-21kworker/u16:1+events_unbound10:28:284
3148776994138,2cyclictest3738567-21kworker/u16:3+flush-8:011:49:395
3148772994139,2cyclictest3443742-21kworker/u16:3+events_unbound10:07:364
3148772994139,2cyclictest3404717-21kworker/u16:2+events_unbound10:10:284
3148772994138,2cyclictest3540197-21kworker/u16:4+events_unbound11:25:154
31393572416,29sleep70-21swapper/706:59:387
31393572416,29sleep70-21swapper/706:59:387
3148772994038,2cyclictest3784064-21kworker/u16:1+events_unbound12:20:234
3148772994038,2cyclictest3784064-21kworker/u16:1+events_unbound11:51:324
3148772994038,2cyclictest3648827-21kworker/u16:0+events_unbound11:03:044
3148772993937,2cyclictest3784064-21kworker/u16:1+events_unbound11:58:124
3148772993937,2cyclictest3648827-21kworker/u16:0+events_unbound10:55:564
3148772993937,2cyclictest3648827-21kworker/u16:0+events_unbound10:55:564
3148772993937,2cyclictest3540197-21kworker/u16:4+events_unbound11:12:364
3148772993937,2cyclictest3404717-21kworker/u16:2+events_unbound11:08:284
3148772993937,2cyclictest3404717-21kworker/u16:2+events_unbound09:52:354
3148772993937,2cyclictest3404717-21kworker/u16:2+events_unbound09:19:174
3148772993836,2cyclictest3540197-21kworker/u16:4+events_unbound10:41:164
3148772993836,2cyclictest3404717-21kworker/u16:2+events_unbound10:38:114
3148772993836,2cyclictest3404717-21kworker/u16:2+events_unbound09:32:254
3148772993836,2cyclictest3354879-21kworker/u16:1+events_unbound10:50:084
3148772993835,2cyclictest3709512-21kworker/u16:2+events_unbound12:05:484
3148776993735,2cyclictest3709512-21kworker/u16:2+flush-8:012:04:435
3148772993735,2cyclictest3722951-21kworker/u16:1+events_unbound11:40:514
3148772993735,2cyclictest3540197-21kworker/u16:4+events_unbound10:21:114
3148772993735,2cyclictest3404717-21kworker/u16:2+events_unbound10:15:444
3148772993735,2cyclictest3404717-21kworker/u16:2+events_unbound10:15:444
3148772993735,2cyclictest3404717-21kworker/u16:2+events_unbound09:10:324
3148772993735,2cyclictest3354879-21kworker/u16:1+events_unbound10:03:474
3148772993735,2cyclictest3354879-21kworker/u16:1+events_unbound09:43:204
3148772993735,2cyclictest3287338-21kworker/u16:4+events_unbound09:08:054
3148772993734,2cyclictest3540197-21kworker/u16:4+flush-8:011:14:324
3148776993634,2cyclictest3354879-21kworker/u16:1+flush-8:009:05:005
3148772993634,2cyclictest3784064-21kworker/u16:1+events_unbound12:16:194
3148772993634,2cyclictest3784064-21kworker/u16:1+events_unbound12:16:194
3148772993634,2cyclictest3722951-21kworker/u16:1+events_unbound11:37:164
3148772993634,2cyclictest3709512-21kworker/u16:2+events_unbound12:13:194
3148772993634,2cyclictest3540197-21kworker/u16:4+events_unbound11:20:594
3148772993634,2cyclictest3540197-21kworker/u16:4+events_unbound10:46:134
3148781993530,4cyclictest3407471-21latency_hist09:14:237
3148778993431,3cyclictest3685414-21kworker/u16:3+events_unbound11:14:416
3148772993432,2cyclictest3767899-21kworker/u16:0+events_unbound12:26:404
3148772993432,2cyclictest3738567-21kworker/u16:3+events_unbound11:49:154
3148781993328,4cyclictest3540154-21latency_hist10:09:227
3148778993331,2cyclictest3784064-21kworker/u16:1+flush-8:012:29:376
3148778993331,2cyclictest3404717-21kworker/u16:2+events_unbound10:09:396
3148778993330,2cyclictest3404717-21kworker/u16:2+flush-8:009:59:286
3148778993330,2cyclictest3404717-21kworker/u16:2+flush-8:009:34:286
3148781993129,1cyclictest3794049-21ssh11:54:287
3148778993027,2cyclictest3709512-21kworker/u16:2+flush-8:012:29:226
3148778993027,2cyclictest3709512-21kworker/u16:2+flush-8:011:34:276
3148776993028,2cyclictest3354879-21kworker/u16:1+flush-8:009:49:455
3148781992928,0cyclictest0-21swapper/710:09:537
3148781992924,4cyclictest3745412-21latency_hist11:34:227
3148781992924,4cyclictest3745412-21latency_hist11:34:227
3148778992927,2cyclictest3354879-21kworker/u16:1+events_unbound09:44:426
3148776992925,3cyclictest3221609-21grep07:39:405
3148772992927,2cyclictest3200211-21kworker/u16:0+events_unbound07:54:464
3148772992926,2cyclictest3248698-21kworker/u16:2+events_unbound08:39:254
314878199280,26cyclictest0-21swapper/712:19:457
3148778992826,2cyclictest3287338-21kworker/u16:4+flush-8:008:19:176
3148776992826,2cyclictest3443742-21kworker/u16:3+events_unbound09:54:445
3148776992825,2cyclictest3540197-21kworker/u16:4+flush-8:010:30:035
3148772992826,2cyclictest3248698-21kworker/u16:2+events_unbound08:06:044
3148772992725,2cyclictest3200211-21kworker/u16:0+events_unbound07:49:204
3148772992724,2cyclictest3248698-21kworker/u16:2+events_unbound08:44:244
3148781992625,1cyclictest3383350-21diskmemload12:00:147
3148781992625,0cyclictest0-21swapper/707:09:287
3148778992624,2cyclictest3404717-21kworker/u16:2+flush-8:011:00:246
3148772992624,2cyclictest3287338-21kworker/u16:4+events_unbound08:25:294
3148772992624,2cyclictest3248698-21kworker/u16:2+events_unbound08:35:294
3148772992624,2cyclictest3101881-21kworker/u16:4+events_unbound07:09:204
3148778992523,2cyclictest3722951-21kworker/u16:1+events_unbound11:39:506
3148778992523,2cyclictest3404717-21kworker/u16:2+flush-8:009:19:486
3148778992522,2cyclictest2413445-21kworker/u16:1+flush-8:007:04:446
3148778992422,2cyclictest3767899-21kworker/u16:0+flush-8:012:24:176
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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