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2026-04-29 - 20:47
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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 Wed Apr 29, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22475782950,1sleep72247579-21grep07:24:247
29361642740,1sleep60-21swapper/612:29:246
28028452560,0sleep50-21swapper/511:34:255
2209743995048,2cyclictest2577441-21kworker/u16:5+events_unbound10:49:194
22043902502,40sleep70-21swapper/707:04:297
220936824838,7sleep40-21swapper/407:07:554
2209743994644,2cyclictest2687163-21kworker/u16:4+flush-8:010:59:194
2209743994644,2cyclictest2687163-21kworker/u16:4+events_unbound10:54:164
2209743994644,2cyclictest2687163-21kworker/u16:4+events_unbound10:54:164
220942624635,8sleep50-21swapper/507:08:445
2209743994543,2cyclictest2820760-21kworker/u16:3+flush-8:011:54:184
2209743994239,2cyclictest2601767-21kworker/u16:2+flush-8:012:14:224
2209743994139,2cyclictest2601767-21kworker/u16:2+events_unbound12:08:004
2209743994038,2cyclictest2601767-21kworker/u16:2+events_unbound10:24:354
2209743994038,2cyclictest2378082-21kworker/u16:0+events_unbound10:44:334
2209743994037,2cyclictest2723380-21kworker/u16:1+events_unbound11:29:194
2209756993938,0cyclictest0-21swapper/712:29:167
2209743993936,2cyclictest2820760-21kworker/u16:3+flush-8:012:09:174
2209743993936,2cyclictest2171679-21kworker/u16:4+events_unbound08:14:164
2209743993836,2cyclictest2538519-21kworker/u16:2+flush-8:009:54:234
2209743993836,2cyclictest2405546-21kworker/u16:4+events_unbound09:19:174
2209743993835,2cyclictest2908915-21kworker/u16:0+events_unbound12:32:124
2209743993835,2cyclictest2820760-21kworker/u16:3+events_unbound11:59:034
2209743993835,2cyclictest2577441-21kworker/u16:5+events_unbound10:19:114
2209743993835,2cyclictest2378082-21kworker/u16:0+flush-8:009:09:154
2209743993736,1cyclictest2443796-21kworker/u16:1+events_unbound09:18:364
2209743993734,2cyclictest2820761-21kworker/u16:4+events_unbound11:49:034
2209743993734,2cyclictest2711204-21kworker/u16:0+events_unbound11:19:194
2209743993734,2cyclictest2476736-21kworker/u16:2+flush-8:009:24:164
2209756993635,0cyclictest0-21swapper/712:34:557
2209743993634,2cyclictest2820761-21kworker/u16:4+events_unbound11:46:444
2209743993634,2cyclictest2723380-21kworker/u16:1+events_unbound11:15:124
2209743993534,1cyclictest2929420-21kworker/u16:3+events_unbound12:37:114
2209743993533,2cyclictest2723380-21kworker/u16:1+events_unbound11:27:434
29286602340,1chrt2928658-21sh12:27:327
2209756993431,2cyclictest2760237-21/usr/sbin/munin11:19:157
2209743993432,2cyclictest2711204-21kworker/u16:0+events_unbound11:39:244
2209743993432,2cyclictest2708011-21kworker/u16:6+events_unbound11:38:124
2209743993432,2cyclictest2577441-21kworker/u16:5+events_unbound10:14:354
2209743993432,2cyclictest2577441-21kworker/u16:5+events_unbound10:14:354
2209743993432,2cyclictest2550874-21kworker/u16:3+events_unbound09:52:484
2209743993432,2cyclictest2117756-21kworker/u16:1+events_unbound07:14:174
2209743993431,2cyclictest2443796-21kworker/u16:1+events_unbound09:35:444
2209743993431,2cyclictest2443796-21kworker/u16:1+events_unbound09:35:444
2209756993331,1cyclictest2793241-21ssh11:29:327
2209743993331,2cyclictest2708011-21kworker/u16:6+events_unbound11:06:444
2209743993331,2cyclictest2601767-21kworker/u16:2+events_unbound12:23:114
2209743993331,2cyclictest2378082-21kworker/u16:0+flush-8:010:34:194
2209743993331,2cyclictest2378082-21kworker/u16:0+events_unbound10:33:474
2209743993331,2cyclictest2378082-21kworker/u16:0+events_unbound10:04:164
2209743993331,2cyclictest2290285-21kworker/u16:2+flush-8:007:49:204
2209743993330,2cyclictest2290285-21kworker/u16:2+events_unbound08:39:154
220941523323,7sleep60-21swapper/607:08:376
2209756993228,3cyclictest2608763-21cut10:14:247
2209756993228,3cyclictest2608763-21cut10:14:247
2209743993230,2cyclictest2601767-21kworker/u16:2+events_unbound11:11:204
2209743993230,2cyclictest2405546-21kworker/u16:4+events_unbound08:49:274
2209756993129,1cyclictest0-21swapper/711:01:127
2209756993128,2cyclictest2882256-21perl12:09:157
2209743993129,2cyclictest2723380-21kworker/u16:1+events_unbound12:28:474
2209743993129,2cyclictest2538519-21kworker/u16:2+flush-8:009:59:514
2209743993128,2cyclictest2171679-21kworker/u16:4+flush-8:008:19:124
2209756993029,0cyclictest0-21swapper/709:49:037
220975699300,28cyclictest2583508-21taskset10:04:247
2209752993027,3cyclictest2723380-21kworker/u16:1+flush-8:012:19:316
2209756992928,0cyclictest0-21swapper/711:50:237
2209756992928,0cyclictest0-21swapper/707:59:177
2209756992927,1cyclictest0-21swapper/711:09:327
2209756992926,1cyclictest2910659-21ssh12:19:247
2209743992927,2cyclictest2577441-21kworker/u16:5+events_unbound10:39:344
2209743992927,2cyclictest2443796-21kworker/u16:1+events_unbound09:29:114
2209743992927,2cyclictest2290285-21kworker/u16:2+events_unbound08:33:574
2209756992826,1cyclictest0-21swapper/712:04:317
2209743992826,2cyclictest2538519-21kworker/u16:2+events_unbound09:47:084
2209743992826,2cyclictest2117756-21kworker/u16:1+events_unbound08:04:244
220975699270,25cyclictest2556542-21cut09:54:227
2209743992725,2cyclictest2443796-21kworker/u16:1+events_unbound09:39:524
2209743992725,2cyclictest2117756-21kworker/u16:1+flush-8:007:39:124
2209756992622,3cyclictest2398388-21cut08:44:197
220975699260,24cyclictest635-21systemd-journal08:29:027
2209752992624,2cyclictest2443796-21kworker/u16:1+flush-8:009:49:166
2209743992624,2cyclictest2378082-21kworker/u16:0+events_unbound10:11:244
2209752992523,2cyclictest2601767-21kworker/u16:2+flush-8:010:54:246
2209752992523,2cyclictest2601767-21kworker/u16:2+flush-8:010:54:246
2209756992423,0cyclictest0-21swapper/709:33:437
2209756992423,0cyclictest0-21swapper/709:25:117
2209756992421,2cyclictest2901212-21cut12:14:257
220975699240,22cyclictest2659818-21timerwakeupswit10:34:337
2209756992322,0cyclictest0-21swapper/711:27:107
2209756992321,1cyclictest0-21swapper/710:27:127
2209752992321,2cyclictest2577441-21kworker/u16:5+flush-8:010:29:296
2209756992216,5cyclictest2395723-21latency_hist08:44:017
2209743992219,2cyclictest2405546-21kworker/u16:4+events_unbound08:54:204
2209743992219,2cyclictest2405546-21kworker/u16:4+events_unbound08:54:204
2209756992120,0cyclictest0-21swapper/710:19:037
2209756992116,4cyclictest2468097-21latency_hist09:19:027
2209752992119,2cyclictest2290285-21kworker/u16:2+flush-8:008:44:286
2209743992119,2cyclictest2290285-21kworker/u16:2+flush-8:007:54:274
2209743992119,2cyclictest2250791-21kworker/u16:0+flush-8:007:28:574
2209756992019,0cyclictest0-21swapper/711:57:397
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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