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2026-04-16 - 14:07
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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 rack0slot5.osadl.org (updated Thu Apr 16, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41003999728307,419cyclictest0-21swapper/223:52:508
41009499713313,399cyclictest0-21swapper/1519:59:027
41003499542540,1cyclictest515512-21kworker/1:2+i915-unordered21:23:061
410030995332,530cyclictest0-21swapper/021:35:060
4100509953222,44cyclictest0-21swapper/500:15:0611
410050995297,521cyclictest0-21swapper/520:28:0611
4100859951213,498cyclictest0-21swapper/1323:57:065
4100349951114,496cyclictest0-21swapper/122:32:061
41003999498497,1cyclictest0-21swapper/219:51:078
41005099488488,0cyclictest640059-21kworker/5:1+i915-unordered23:57:0611
41005899487485,2cyclictest455184-21kworker/7:2+i915-unordered20:42:0613
4100829947922,58cyclictest0-21swapper/1222:06:504
4100729947911,467cyclictest0-21swapper/1019:55:072
4100349947653,30cyclictest34-21ksoftirqd/123:33:061
4100349947653,30cyclictest34-21ksoftirqd/123:33:061
41003499472470,2cyclictest616124-21kworker/1:1+i915-unordered23:27:061
4100349946115,29cyclictest0-21swapper/119:56:061
4100629946017,29cyclictest0-21swapper/821:08:5014
4100399945211,29cyclictest0-21swapper/221:12:068
410062994514,58cyclictest0-21swapper/821:13:0614
41007299450448,2cyclictest446854-21kworker/10:0+i915-unordered19:53:072
41003999449446,2cyclictest422803-21kworker/2:0+pm19:43:178
4100829944722,29cyclictest0-21swapper/1200:18:514
41009499446446,0cyclictest0-21swapper/1500:12:067
4100349944521,30cyclictest34-21ksoftirqd/122:41:061
4100659944417,29cyclictest0-21swapper/923:03:2715
4100309944314,29cyclictest0-21swapper/022:17:300
4100629944224,30cyclictest0-21swapper/822:02:4914
41005899441441,0cyclictest0-21swapper/723:25:0613
4100349944123,417cyclictest0-21swapper/120:47:511
4100349944123,417cyclictest0-21swapper/120:47:511
4100949944018,421cyclictest0-21swapper/1522:16:067
41004599440436,3cyclictest1818-21snmpd20:09:3910
4100539943919,419cyclictest0-21swapper/621:57:2912
4100539943919,419cyclictest0-21swapper/620:04:2712
4100539943821,415cyclictest0-21swapper/622:09:2712
4100539943815,28cyclictest0-21swapper/620:32:2912
4100729943712,424cyclictest115-21ksoftirqd/1023:42:062
4100729943712,424cyclictest115-21ksoftirqd/1023:42:062
41003999437436,1cyclictest0-21swapper/219:15:078
410050994368,425cyclictest0-21swapper/520:30:2711
41003999435435,0cyclictest438916-21kworker/2:1+i915-unordered19:55:078
4100349943515,419cyclictest0-21swapper/122:51:521
4100349943512,30cyclictest0-21swapper/119:52:061
4100399943415,29cyclictest0-21swapper/223:40:068
4100399943415,29cyclictest0-21swapper/223:40:068
4100349943415,418cyclictest0-21swapper/121:01:511
41009499433433,0cyclictest0-21swapper/1521:54:307
4100949943218,413cyclictest0-21swapper/1521:20:067
4100829943216,416cyclictest0-21swapper/1223:39:294
4100829943216,416cyclictest0-21swapper/1223:39:294
41006299432431,1cyclictest514180-21kworker/8:1+i915-unordered21:35:0614
4100539943212,419cyclictest0-21swapper/621:43:2712
4100539943212,419cyclictest0-21swapper/600:38:4912
4100509943211,420cyclictest0-21swapper/520:56:2811
41007799431429,2cyclictest455090-21kworker/11:2+i915-unordered20:03:073
4100349943116,414cyclictest0-21swapper/121:40:061
41007299430427,3cyclictest0-21swapper/1020:31:402
410053994299,419cyclictest0-21swapper/621:36:5212
41004399429428,1cyclictest69750irq/159-i91520:03:079
410072994288,420cyclictest0-21swapper/1021:34:282
4100659942812,415cyclictest0-21swapper/920:26:0615
4100539942810,417cyclictest0-21swapper/619:57:5212
410050994289,418cyclictest0-21swapper/521:56:2911
410065994261,30cyclictest0-21swapper/919:35:0615
4100659942611,415cyclictest0-21swapper/920:10:0615
4100459942611,414cyclictest0-21swapper/421:02:0610
410039994266,29cyclictest0-21swapper/220:11:068
410053994257,416cyclictest0-21swapper/620:46:5012
410053994257,416cyclictest0-21swapper/620:46:5012
410053994250,30cyclictest0-21swapper/623:14:2912
410030994255,417cyclictest0-21swapper/020:43:060
41003499424423,1cyclictest1818-21snmpd20:20:041
4100349942427,396cyclictest0-21swapper/121:36:291
410034994234,418cyclictest0-21swapper/123:37:291
410034994234,418cyclictest0-21swapper/123:37:291
41007799422420,2cyclictest575712-21kworker/11:1+i915-unordered22:37:063
4100509942223,398cyclictest0-21swapper/520:50:5111
4100509942223,398cyclictest0-21swapper/520:50:5111
4100349942224,397cyclictest0-21swapper/122:06:281
41007299421418,2cyclictest458976-21kworker/10:0+events20:37:512
410072994211,419cyclictest0-21swapper/1021:12:522
410065994215,415cyclictest0-21swapper/919:41:0615
410039994213,30cyclictest0-21swapper/220:05:068
410034994210,420cyclictest0-21swapper/121:33:281
410058994200,419cyclictest0-21swapper/721:09:3013
4100539942023,396cyclictest0-21swapper/621:29:2812
410034994201,418cyclictest0-21swapper/119:47:291
410094994190,30cyclictest0-21swapper/1500:33:067
410082994194,414cyclictest0-21swapper/1219:45:064
410082994193,29cyclictest0-21swapper/1221:00:064
41006599419418,1cyclictest0-21swapper/921:23:0615
410065994190,415cyclictest0-21swapper/900:24:2815
4100539941924,394cyclictest0-21swapper/620:25:2912
4100539941922,396cyclictest0-21swapper/622:49:2712
4100509941922,396cyclictest0-21swapper/520:39:2811
41004399419418,1cyclictest69750irq/159-i91522:37:069
4100949941824,393cyclictest0-21swapper/1520:42:067
41008599418415,2cyclictest499329-21kworker/u64:4+events_unbound21:08:065
410082994183,415cyclictest0-21swapper/1221:06:064
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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