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2026-05-21 - 14:09
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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 May 21, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4030518995603,44cyclictest0-21swapper/719:27:0213
40305129952915,512cyclictest0-21swapper/519:42:0211
40305129952915,512cyclictest0-21swapper/519:42:0211
40305079947325,28cyclictest0-21swapper/422:48:2510
403054199468465,2cyclictest4039274-21kworker/12:2+i915-unordered19:20:024
403055499464464,0cyclictest4079509-21kworker/15:0+i915-unordered20:24:027
4030518994615,59cyclictest0-21swapper/722:23:2313
403054599458457,1cyclictest4041943-21kworker/13:1+i915-unordered19:42:025
403054599458457,1cyclictest4041943-21kworker/13:1+i915-unordered19:42:025
4030518994585,58cyclictest0-21swapper/719:30:0213
403055499448447,1cyclictest4131987-21kworker/15:0+i915-unordered22:17:027
4030541994478,438cyclictest0-21swapper/1222:50:024
40305189944626,418cyclictest0-21swapper/720:30:2613
40304959944522,29cyclictest0-21swapper/122:02:021
4030536994440,443cyclictest0-21swapper/1120:02:243
403055499442441,1cyclictest4026000-21kworker/15:4+i915-unordered19:27:027
40305129944023,416cyclictest0-21swapper/521:22:4711
40305189943917,420cyclictest0-21swapper/722:11:2513
4030531994379,30cyclictest0-21swapper/1020:08:232
40304959943617,28cyclictest0-21swapper/123:29:021
40305079943515,418cyclictest0-21swapper/419:53:2510
40305319943312,420cyclictest0-21swapper/1000:01:252
40305319943112,418cyclictest0-21swapper/1021:41:232
4030507994304,30cyclictest0-21swapper/423:45:2510
4030531994289,418cyclictest0-21swapper/1020:43:462
4030507994283,29cyclictest0-21swapper/421:25:2410
4030507994282,424cyclictest0-21swapper/400:29:4610
4030531994272,28cyclictest0-21swapper/1020:53:252
4030518994270,29cyclictest0-21swapper/723:47:4513
4030512994270,426cyclictest0-21swapper/522:22:1311
4030507994273,29cyclictest0-21swapper/421:53:4610
4030507994270,30cyclictest0-21swapper/420:58:4610
4030531994260,28cyclictest0-21swapper/1000:28:482
4030518994260,30cyclictest0-21swapper/720:24:0213
4030495994267,29cyclictest0-21swapper/123:52:021
403055499424424,0cyclictest4047118-21kworker/15:0+i915-unordered19:41:027
403055499424424,0cyclictest4047118-21kworker/15:0+i915-unordered19:41:027
4030554994243,30cyclictest0-21swapper/1520:07:027
403053199424424,0cyclictest0-21swapper/1020:33:242
40305189942424,397cyclictest0-21swapper/721:28:2313
40305189942424,397cyclictest0-21swapper/719:45:2413
40305189942424,397cyclictest0-21swapper/719:45:2413
4030507994240,28cyclictest0-21swapper/422:00:2410
4030495994242,30cyclictest0-21swapper/120:47:581
4030554994230,30cyclictest0-21swapper/1520:09:027
40305129942322,400cyclictest0-21swapper/523:26:2511
40305079942327,395cyclictest0-21swapper/419:36:2510
40305079942325,397cyclictest0-21swapper/422:42:2510
4030507994230,28cyclictest0-21swapper/421:36:2410
403049299423420,3cyclictest0-21swapper/019:09:010
403054199422421,1cyclictest4127875-21kworker/12:2+i915-unordered22:00:024
4030536994220,421cyclictest0-21swapper/1121:21:483
403052299422420,2cyclictest1818-21snmpd19:09:0114
40305189942224,396cyclictest0-21swapper/721:54:2313
40305079942226,395cyclictest0-21swapper/420:46:4510
40305079942225,396cyclictest0-21swapper/419:46:4710
40305079942225,396cyclictest0-21swapper/419:46:4710
40305079942224,397cyclictest0-21swapper/421:29:4710
403052699421419,1cyclictest30626-21kworker/9:2+i915-unordered23:08:2515
40305189942124,397cyclictest0-21swapper/721:00:2313
40305189942123,396cyclictest0-21swapper/722:47:4813
40305189942122,398cyclictest0-21swapper/722:33:4413
40305189942122,398cyclictest0-21swapper/722:33:4413
40305189942122,397cyclictest0-21swapper/700:17:2513
4030518994210,28cyclictest0-21swapper/722:48:4513
4030512994211,29cyclictest0-21swapper/520:02:5811
40305079942125,395cyclictest0-21swapper/423:02:4610
4030554994200,30cyclictest0-21swapper/1500:04:027
40305189942022,398cyclictest0-21swapper/721:21:2513
40305189942022,396cyclictest0-21swapper/720:00:2513
40305189942021,397cyclictest0-21swapper/719:11:4813
40305189942020,398cyclictest0-21swapper/722:04:2613
40305189942019,398cyclictest0-21swapper/720:44:2513
403051299420419,1cyclictest0-21swapper/500:24:1411
40305129942024,395cyclictest0-21swapper/523:58:4811
40305079942025,394cyclictest0-21swapper/419:16:4610
40305079942024,395cyclictest0-21swapper/419:52:4410
4030507994201,417cyclictest0-21swapper/421:40:2310
4030531994190,418cyclictest0-21swapper/1019:51:252
40305189941921,395cyclictest0-21swapper/719:13:4713
40305189941920,398cyclictest0-21swapper/721:10:4513
40305189941920,398cyclictest0-21swapper/700:04:4513
40305129941926,392cyclictest0-21swapper/523:16:4711
40305129941924,394cyclictest0-21swapper/522:15:4611
40305129941923,395cyclictest0-21swapper/522:37:4811
40305129941923,395cyclictest0-21swapper/522:37:4811
40305129941923,395cyclictest0-21swapper/520:21:2411
40305129941923,395cyclictest0-21swapper/519:22:2511
40305079941921,397cyclictest0-21swapper/422:44:4410
403052699418418,0cyclictest0-21swapper/921:06:0215
40305269941811,406cyclictest0-21swapper/921:34:0215
40305189941820,396cyclictest0-21swapper/722:17:2413
40305189941819,398cyclictest0-21swapper/719:41:2513
40305189941819,398cyclictest0-21swapper/719:41:2513
40305189941819,398cyclictest0-21swapper/700:26:2513
40305189941819,397cyclictest0-21swapper/721:51:4413
40305129941825,393cyclictest0-21swapper/520:13:4611
40305129941824,393cyclictest0-21swapper/523:12:2511
40305129941824,393cyclictest0-21swapper/520:49:2511
40305129941823,394cyclictest0-21swapper/522:23:4611
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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