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2026-05-21 - 19:36
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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 50 highest latencies:
System rack0slot2.osadl.org (updated Thu May 21, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20443702990,1sleep72044371-21rm11:23:037
1474360995552,2cyclictest1890523-21kworker/u16:1+events_unbound10:42:474
1474360995149,2cyclictest1890523-21kworker/u16:1+events_unbound10:23:004
1474366995048,2cyclictest2071586-21kworker/u16:2+events_unbound12:23:006
1474370994943,4cyclictest2092716-21ntpq11:43:047
1474366994845,2cyclictest1936165-21kworker/u16:2+events_unbound10:52:526
1474366994744,2cyclictest2057278-21kworker/u16:0+flush-8:011:38:036
1474366994744,2cyclictest2057278-21kworker/u16:0+flush-8:011:38:036
1474360994745,2cyclictest2081408-21kworker/u16:3+events_unbound11:43:084
147392124736,8sleep40-21swapper/407:05:374
147390424737,7sleep50-21swapper/507:05:225
1474366994543,2cyclictest2071586-21kworker/u16:2+events_unbound12:32:526
1474366994442,2cyclictest1936165-21kworker/u16:2+events_unbound10:44:166
1474366994442,2cyclictest1829460-21kworker/u16:0+events_unbound10:38:036
1474366994340,2cyclictest2057278-21kworker/u16:0+events_unbound11:33:086
1474360994341,2cyclictest2071586-21kworker/u16:2+flush-8:012:28:034
1474360994240,2cyclictest2071586-21kworker/u16:2+events_unbound12:08:034
1474360994240,2cyclictest1535418-21kworker/u16:1+flush-8:009:16:034
14738592425,31sleep70-21swapper/707:04:447
1474366994139,2cyclictest1839611-21kworker/u16:5+events_unbound10:18:036
1474366994139,2cyclictest1839611-21kworker/u16:5+events_unbound10:18:036
147437099400,38cyclictest2069109-21awk11:33:087
1474366994038,2cyclictest2095802-21kworker/u16:0+flush-8:011:47:546
1474366994038,2cyclictest2071586-21kworker/u16:2+events_unbound11:52:486
1474366994038,2cyclictest1890523-21kworker/u16:1+events_unbound12:02:526
1474370993936,2cyclictest1971868-21processes10:53:047
1474366993936,2cyclictest2008784-21kworker/u16:4+flush-8:011:17:516
1474370993835,2cyclictest124-21kswapd011:02:477
1474360993836,2cyclictest2095802-21kworker/u16:0+events_unbound11:48:034
1474370993732,4cyclictest1962676-21latency_hist10:52:347
1474366993734,2cyclictest1890523-21kworker/u16:1+flush-8:010:57:366
1474366993734,2cyclictest1890523-21kworker/u16:1+flush-8:010:57:366
1474364993735,2cyclictest2095802-21kworker/u16:0+events_unbound11:58:035
1474360993735,2cyclictest1986914-21kworker/u16:0+flush-8:011:12:474
1474360993735,2cyclictest1793204-21kworker/u16:3+events_unbound09:57:344
1474364993634,2cyclictest1890523-21kworker/u16:1+events_unbound11:03:005
1474360993634,2cyclictest1839611-21kworker/u16:5+events_unbound10:31:444
1474366993533,2cyclictest1890523-21kworker/u16:1+events_unbound10:27:166
1474366993533,2cyclictest1793204-21kworker/u16:3+events_unbound09:47:346
1474366993533,2cyclictest1651036-21kworker/u16:3+events_unbound08:52:596
1474366993532,2cyclictest1890523-21kworker/u16:1+events_unbound11:02:566
1474360993534,1cyclictest1839611-21kworker/u16:5+events_unbound10:05:524
1474360993533,2cyclictest1890523-21kworker/u16:1+flush-8:010:33:014
1474360993533,2cyclictest1829460-21kworker/u16:0+flush-8:010:37:484
147437099340,33cyclictest5819-21gnome-shell11:20:437
1474366993432,2cyclictest2095802-21kworker/u16:0+flush-8:012:08:056
1474366993432,2cyclictest1829460-21kworker/u16:0+flush-8:010:32:346
1474366993432,1cyclictest1535418-21kworker/u16:1+events_unbound09:37:366
1474366993432,1cyclictest1535418-21kworker/u16:1+events_unbound09:37:366
1474364993432,2cyclictest2179663-21kworker/u16:3+events_unbound12:33:005
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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