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2026-05-21 - 21:01
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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 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
1474360993432,2cyclictest1890523-21kworker/u16:1+flush-8:010:57:154
1474360993432,2cyclictest1779982-21kworker/u16:2+flush-8:009:45:554
1474370993331,1cyclictest2102046-21ssh11:47:557
1474370993329,3cyclictest124-21kswapd010:57:477
1474370993329,3cyclictest124-21kswapd010:57:477
1474370993327,5cyclictest1670166-21latency_hist08:47:357
1474366993331,2cyclictest2071586-21kworker/u16:2+events_unbound12:19:446
1474366993331,2cyclictest2071586-21kworker/u16:2+events_unbound12:19:446
1474366993331,2cyclictest1986914-21kworker/u16:0+events_unbound11:13:066
1474366993331,2cyclictest1793204-21kworker/u16:3+events_unbound09:48:446
1474366993331,2cyclictest1209176-21kworker/u16:1+events_unbound07:08:006
1474360993331,2cyclictest2057278-21kworker/u16:0+events_unbound11:37:494
1474360993331,2cyclictest2057278-21kworker/u16:0+events_unbound11:37:494
1474360993331,2cyclictest1890523-21kworker/u16:1+events_unbound11:36:434
1474360993331,2cyclictest1602628-21kworker/u16:0+events_unbound09:41:444
1474360993331,2cyclictest1602628-21kworker/u16:0+events_unbound09:41:444
1474370993226,5cyclictest1914268-21latency_hist10:32:347
1474366993230,2cyclictest2057278-21kworker/u16:0+flush-8:011:31:446
1474366993230,2cyclictest1651036-21kworker/u16:3+events_unbound09:11:446
1474360993230,2cyclictest1535418-21kworker/u16:1+events_unbound09:47:364
1474370993127,2cyclictest1535753-21munin-run07:37:347
1474366993129,2cyclictest1890523-21kworker/u16:1+events_unbound11:57:476
1474366993129,2cyclictest1793204-21kworker/u16:3+flush-8:010:17:196
1474366993129,2cyclictest1651036-21kworker/u16:3+events_unbound09:20:446
1474364993129,2cyclictest1535418-21kworker/u16:1+flush-8:009:17:565
1474364993129,2cyclictest1535418-21kworker/u16:1+flush-8:008:22:495
1474360993129,2cyclictest2213711-21kworker/u16:4+events_unbound12:37:304
1474360993129,2cyclictest2035322-21kworker/u16:2+flush-8:011:28:074
1474360993129,2cyclictest1890523-21kworker/u16:1+flush-8:010:47:444
1474360993129,2cyclictest1602628-21kworker/u16:0+flush-8:009:23:364
147384023121,7sleep60-21swapper/607:04:276
1474366993028,2cyclictest1744803-21kworker/u16:2+flush-8:009:23:246
1474360993028,2cyclictest2165101-21kworker/u16:1+flush-8:012:17:494
1474360993028,2cyclictest2165101-21kworker/u16:1+flush-8:012:17:494
1474360993028,2cyclictest2008784-21kworker/u16:4+events_unbound11:11:444
1474360993027,2cyclictest3158215-21fwupd09:58:414
1474360993027,2cyclictest2008784-21kworker/u16:4+events_unbound11:25:444
19997482290,1chrt0-21swapper/511:07:465
1474370992927,1cyclictest2128933-21strings11:57:597
1474366992927,2cyclictest2081408-21kworker/u16:3+events_unbound11:43:436
1474366992927,2cyclictest1961980-21kworker/u16:0+events_unbound10:51:446
1474370992827,0cyclictest0-21swapper/710:41:447
1474366992826,2cyclictest1602628-21kworker/u16:0+flush-8:008:47:346
1474366992826,2cyclictest1535418-21kworker/u16:1+events_unbound09:34:236
1474366992825,2cyclictest2095802-21kworker/u16:0+events_unbound12:13:086
1474364992826,2cyclictest1602628-21kworker/u16:0+flush-8:008:42:505
1474364992826,2cyclictest1535418-21kworker/u16:1+events_unbound07:57:485
1474360992826,2cyclictest1535418-21kworker/u16:1+flush-8:009:19:444
17672392270,1chrt1767240-21ssh09:29:227
1474370992726,0cyclictest0-21swapper/709:57:167
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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