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2026-07-01 - 07:09
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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 Wed Jul 01, 2026 00:43:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
233878326252,7sleep40-21swapper/419:09:024
232947225319,29sleep70-21swapper/719:04:167
2339089994640,5cyclictest2488369-21latency_hist20:24:057
2339087994441,2cyclictest2792131-21kworker/u16:0+flush-8:023:49:056
2339089994342,0cyclictest0-21swapper/723:14:077
233855424333,7sleep50-21swapper/519:05:505
2339087993937,2cyclictest2792131-21kworker/u16:0+flush-8:023:38:596
2339082993936,2cyclictest2998006-21kworker/u16:2+events_unbound00:21:075
233868923928,8sleep60-21swapper/619:07:446
2339082993836,2cyclictest2646122-21kworker/u16:2+events_unbound23:14:235
2339089993735,1cyclictest2611360-21ssh21:22:457
2339082993734,2cyclictest2646122-21kworker/u16:2+events_unbound21:49:085
2339087993634,2cyclictest2536920-21kworker/u16:3+events_unbound21:39:006
2339087993634,2cyclictest2536920-21kworker/u16:3+events_unbound21:39:006
2339082993634,2cyclictest2792131-21kworker/u16:0+events_unbound23:09:515
2339087993532,2cyclictest2998006-21kworker/u16:2+flush-8:000:14:056
2339082993533,2cyclictest2952403-21kworker/u16:3+events_unbound23:59:045
2339082993533,2cyclictest2792131-21kworker/u16:0+events_unbound22:37:155
2339089993432,1cyclictest2672081-21sh21:47:367
2339089993432,1cyclictest2575645-21diskmemload23:50:127
2339087993432,2cyclictest2646122-21kworker/u16:2+events_unbound22:54:406
2339087993432,2cyclictest2646122-21kworker/u16:2+events_unbound22:54:406
2339082993431,2cyclictest2536920-21kworker/u16:3+events_unbound21:28:085
2339089993331,1cyclictest2575645-21diskmemload21:35:087
2339089993331,1cyclictest2575645-21diskmemload21:35:087
2339082993331,2cyclictest2998006-21kworker/u16:2+events_unbound00:12:565
2339082993331,2cyclictest2624628-21kworker/u16:4+events_unbound21:30:365
2339082993331,2cyclictest2448768-21kworker/u16:1+events_unbound21:48:005
2339089993231,0cyclictest0-21swapper/700:37:087
2339089993230,1cyclictest2866724-21ssh23:08:007
2339089993230,1cyclictest2732179-21ssh22:11:297
2339089993230,1cyclictest0-21swapper/721:24:097
2339082993230,2cyclictest2792131-21kworker/u16:0+flush-8:022:43:155
2339082993230,2cyclictest2733986-21kworker/u16:4+events_unbound23:07:155
2339082993230,2cyclictest2646122-21kworker/u16:2+events_unbound23:19:125
2339082993230,2cyclictest2546980-21kworker/u16:2+flush-8:021:14:005
2339082993230,2cyclictest2448768-21kworker/u16:1+events_unbound22:05:215
2339089993130,0cyclictest0-21swapper/722:01:217
2339089993130,0cyclictest0-21swapper/700:25:237
2339089993129,1cyclictest2829353-21ssh22:51:097
2339089993129,1cyclictest2575645-21diskmemload21:10:097
2339089993129,1cyclictest2575645-21diskmemload00:00:327
2339089993128,2cyclictest3026758-21ssh00:16:127
2339089993128,2cyclictest2963874-21ssh23:48:017
2339089993128,2cyclictest2598638-21ssh21:16:447
2339087993129,2cyclictest2733568-21kworker/u16:0+events_unbound22:14:406
2339087993129,2cyclictest2733568-21kworker/u16:0+events_unbound22:14:406
2339082993129,2cyclictest2877221-21kworker/u16:1+events_unbound23:30:165
2339082993129,2cyclictest2792131-21kworker/u16:0+events_unbound23:37:165
2339082993129,2cyclictest2733986-21kworker/u16:4+events_unbound22:17:365
2339082993129,2cyclictest2733986-21kworker/u16:4+events_unbound22:17:365
2339082993129,2cyclictest2646122-21kworker/u16:2+events_unbound22:26:165
2339082993129,2cyclictest2536920-21kworker/u16:3+events_unbound21:18:295
2339082993129,2cyclictest2448768-21kworker/u16:1+events_unbound21:58:515
2339082993127,3cyclictest2646122-21kworker/u16:2+flush-8:022:04:055
2339089993029,0cyclictest0-21swapper/723:03:087
2339089993029,0cyclictest0-21swapper/722:56:167
2339089993029,0cyclictest0-21swapper/722:56:167
2339089993028,1cyclictest0-21swapper/722:21:397
2339089993025,4cyclictest2804748-21ssh22:40:367
2339087993028,2cyclictest2646122-21kworker/u16:2+flush-8:021:39:446
2339082993028,2cyclictest2877221-21kworker/u16:1+events_unbound23:41:235
2339082993028,2cyclictest2733986-21kworker/u16:4+events_unbound22:20:155
2339089992928,0cyclictest0-21swapper/723:58:197
2339089992928,0cyclictest0-21swapper/723:24:077
2339089992928,0cyclictest0-21swapper/722:37:407
2339089992928,0cyclictest0-21swapper/721:40:527
2339089992928,0cyclictest0-21swapper/700:23:087
2339082992927,2cyclictest2792131-21kworker/u16:0+events_unbound22:49:595
2339082992927,2cyclictest2391688-21kworker/u16:2+flush-8:020:04:055
2339089992827,0cyclictest0-21swapper/722:48:357
2339089992827,0cyclictest0-21swapper/721:52:247
2339089992827,0cyclictest0-21swapper/700:11:327
2339089992826,1cyclictest2938066-21ssh23:35:087
2339089992826,1cyclictest0-21swapper/722:16:327
2339089992826,1cyclictest0-21swapper/722:16:327
2339089992825,2cyclictest2878670-21sh23:12:417
2339089992825,2cyclictest2636195-21ssh21:33:447
2339087992826,2cyclictest2536920-21kworker/u16:3+events_unbound21:24:296
2339089992726,0cyclictest0-21swapper/723:31:057
2339089992726,0cyclictest0-21swapper/722:28:047
2339089992726,0cyclictest0-21swapper/700:31:527
2339089992725,1cyclictest2901548-21ssh23:19:557
2339089992725,1cyclictest2380670-21ntp_states19:24:317
2339089992722,4cyclictest2721450-21latency_hist22:09:057
2339087992725,2cyclictest2952403-21kworker/u16:3+events_unbound23:57:166
2339087992725,2cyclictest2877221-21kworker/u16:1+events_unbound23:16:166
2339087992725,2cyclictest2536920-21kworker/u16:3+flush-8:022:09:366
2339087992725,2cyclictest2391688-21kworker/u16:2+events_unbound20:44:046
2339082992725,2cyclictest2877221-21kworker/u16:1+events_unbound23:24:525
2339089992625,0cyclictest0-21swapper/700:08:357
2339082992624,2cyclictest3052636-21kworker/u16:1+events_unbound00:37:345
2339082992624,2cyclictest3052636-21kworker/u16:1+events_unbound00:30:085
2339082992624,2cyclictest2998006-21kworker/u16:2+events_unbound00:08:055
2339082992624,2cyclictest2998006-21kworker/u16:2+events_unbound00:01:365
2339082992624,2cyclictest2877221-21kworker/u16:1+events_unbound23:51:345
2339082992624,2cyclictest2792131-21kworker/u16:0+events_unbound22:55:045
2339082992624,2cyclictest2792131-21kworker/u16:0+events_unbound22:55:045
2339082992624,2cyclictest2733986-21kworker/u16:4+events_unbound23:00:035
2339082992624,2cyclictest2646122-21kworker/u16:2+events_unbound22:45:005
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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