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2026-05-31 - 14:40
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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 Sun May 31, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1684397996260,2cyclictest2268560-21kworker/u16:3+events_unbound12:27:195
168401625848,7sleep40-21swapper/407:05:374
1684397995755,2cyclictest2341130-21kworker/u16:2+events_unbound12:02:125
1684397995452,2cyclictest2169454-21kworker/u16:5+flush-8:011:52:235
1684397995351,2cyclictest972153-21kworker/u16:2+flush-8:011:42:095
168386525342,7sleep50-21swapper/507:03:305
1684397995149,2cyclictest2305954-21kworker/u16:0+events_unbound12:32:265
1684397995149,2cyclictest2124041-21kworker/u16:0+events_unbound11:27:115
1684397995149,2cyclictest2124041-21kworker/u16:0+events_unbound11:12:265
1684409994846,1cyclictest1918623-21diskmemload12:07:277
1684409994846,1cyclictest1918623-21diskmemload12:07:277
1684395994744,2cyclictest2124041-21kworker/u16:0+flush-8:011:03:334
1684397994643,2cyclictest2124041-21kworker/u16:0+events_unbound11:22:085
1684409994541,2cyclictest2350481-21users12:02:307
1684397994543,2cyclictest972153-21kworker/u16:2+events_unbound11:47:235
1684395994543,2cyclictest1752622-21kworker/u16:1+flush-8:008:16:544
1684409994239,2cyclictest2294732-21kthreadcore11:42:127
1684397994139,2cyclictest972153-21kworker/u16:2+events_unbound11:19:125
1684397994139,2cyclictest2169454-21kworker/u16:5+events_unbound11:02:225
1684395994138,2cyclictest972153-21kworker/u16:2+flush-8:008:26:544
1684397994038,2cyclictest2305954-21kworker/u16:0+events_unbound11:57:135
1684397994038,2cyclictest2268560-21kworker/u16:3+events_unbound12:14:435
1684397994038,2cyclictest1880200-21kworker/u16:0+events_unbound09:34:295
1684397994037,2cyclictest1752622-21kworker/u16:1+flush-8:008:17:215
168440999380,36cyclictest1940811-21ssh09:13:297
168440999380,36cyclictest1930593-21latency_hist09:11:547
1684397993836,2cyclictest972153-21kworker/u16:2+events_unbound09:15:365
1684397993836,2cyclictest2305954-21kworker/u16:0+events_unbound12:10:235
1684397993836,2cyclictest2305954-21kworker/u16:0+events_unbound12:10:235
1684397993836,2cyclictest2268560-21kworker/u16:3+events_unbound12:22:125
1684397993836,2cyclictest1880200-21kworker/u16:0+events_unbound09:58:085
1684397993835,2cyclictest2124041-21kworker/u16:0+events_unbound10:52:365
16800152382,30sleep70-21swapper/707:02:197
1684409993734,2cyclictest2414065-21df12:32:087
1684397993735,2cyclictest972153-21kworker/u16:2+events_unbound10:43:315
1684397993735,2cyclictest2365102-21kworker/u16:1+events_unbound12:20:405
1684397993735,2cyclictest2268560-21kworker/u16:3+events_unbound11:33:155
1684397993735,2cyclictest2024440-21kworker/u16:1+events_unbound10:18:245
1684397993735,2cyclictest1880200-21kworker/u16:0+events_unbound10:03:135
1684397993735,2cyclictest1880200-21kworker/u16:0+events_unbound09:08:495
1684395993735,2cyclictest2268560-21kworker/u16:3+events_unbound12:21:544
1684397993634,2cyclictest972153-21kworker/u16:2+flush-8:010:35:565
1684397993634,2cyclictest972153-21kworker/u16:2+flush-8:007:07:235
1684397993634,2cyclictest972153-21kworker/u16:2+events_unbound11:01:165
1684397993634,2cyclictest972153-21kworker/u16:2+events_unbound09:48:535
1684397993634,2cyclictest972153-21kworker/u16:2+events_unbound08:36:565
1684397993634,2cyclictest2169454-21kworker/u16:5+events_unbound10:50:095
1684397993634,2cyclictest2169454-21kworker/u16:5+events_unbound10:50:095
1684397993632,2cyclictest1880200-21kworker/u16:0+events_unbound09:28:205
1684397993533,2cyclictest972153-21kworker/u16:2+events_unbound10:38:455
1684397993533,2cyclictest2124041-21kworker/u16:0+events_unbound11:09:575
1684395993532,2cyclictest1850393-21kworker/u16:3+flush-8:009:01:544
1684409993431,2cyclictest1851359-21munin-run08:31:547
1684409993431,2cyclictest1793716-21perf08:01:547
1684397993432,2cyclictest972153-21kworker/u16:2+events_unbound09:38:205
1684397993432,2cyclictest972153-21kworker/u16:2+events_unbound09:25:525
1684397993432,2cyclictest2024440-21kworker/u16:1+events_unbound09:53:445
1684395993432,2cyclictest1674589-21kworker/u16:0+flush-8:007:21:544
1684409993331,1cyclictest1918623-21diskmemload10:35:087
1684409993331,1cyclictest1918623-21diskmemload10:08:487
1684409993331,1cyclictest1918623-21diskmemload10:08:487
1684409993331,1cyclictest0-21swapper/712:27:097
1684401993331,2cyclictest2063312-21kworker/u16:3+events_unbound10:47:096
1684401993331,2cyclictest2063312-21kworker/u16:3+events_unbound10:47:096
1684401993327,6cyclictest1880200-21kworker/u16:0+events_unbound10:02:266
1684397993331,2cyclictest972153-21kworker/u16:2+events_unbound10:28:495
1684397993331,2cyclictest1880200-21kworker/u16:0+events_unbound10:08:575
1684397993331,2cyclictest1880200-21kworker/u16:0+events_unbound10:08:575
1684395993331,2cyclictest2305954-21kworker/u16:0+flush-8:012:12:204
22814442320,1chrt2281445-21df11:37:067
1684409993231,0cyclictest0-21swapper/712:01:047
1684409993230,1cyclictest1918623-21diskmemload10:39:247
1684409993230,1cyclictest1918623-21diskmemload10:13:047
1684397993230,2cyclictest972153-21kworker/u16:2+events_unbound09:21:285
1684397993229,2cyclictest2063312-21kworker/u16:3+events_unbound10:11:555
1684395993230,2cyclictest2268560-21kworker/u16:3+flush-8:012:32:094
1684409993129,1cyclictest2207219-21ssh11:05:047
1684401993129,2cyclictest1752622-21kworker/u16:1+events_unbound08:02:096
1684401993129,2cyclictest1674589-21kworker/u16:0+events_unbound07:37:086
1684401993129,2cyclictest1674589-21kworker/u16:0+events_unbound07:22:236
1684397993129,2cyclictest972153-21kworker/u16:2+events_unbound09:03:295
1684397993129,2cyclictest2268560-21kworker/u16:3+flush-8:011:37:105
1684397993128,2cyclictest972153-21kworker/u16:2+events_unbound07:56:585
1684397993028,2cyclictest972153-21kworker/u16:2+events_unbound08:33:335
1684397993028,2cyclictest1821591-21kworker/u16:4+events_unbound08:27:335
1684395993028,2cyclictest972153-21kworker/u16:2+events_unbound07:41:554
1684395993028,2cyclictest2169454-21kworker/u16:5+events_unbound11:32:124
24064212290,1chrt0-21swapper/612:27:146
1684409992928,0cyclictest0-21swapper/711:56:037
1684409992928,0cyclictest0-21swapper/711:21:087
1684409992928,0cyclictest0-21swapper/710:25:247
1684409992927,1cyclictest1918623-21diskmemload12:17:117
1684409992926,2cyclictest1954823-21cat09:21:557
1684397992927,2cyclictest2024440-21kworker/u16:1+events_unbound10:24:355
1684397992927,2cyclictest1990680-21kworker/u16:3+events_unbound09:46:295
1684397992926,2cyclictest1674589-21kworker/u16:0+events_unbound07:52:055
1684395992926,2cyclictest972153-21kworker/u16:2+events_unbound10:22:144
22319742280,1chrt2231972-21ssh11:16:147
1684409992826,1cyclictest1918623-21diskmemload10:49:567
1684409992826,1cyclictest1918623-21diskmemload10:49:567
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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