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2025-07-10 - 12:34
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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 Jul 10, 2025 00:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2828967995888,27cyclictest0-21swapper/122:43:051
2828967995888,27cyclictest0-21swapper/122:43:051
2828979995425,536cyclictest0-21swapper/423:18:0510
282900399504503,1cyclictest2953600-21kworker/10:2+i915-unordered21:46:052
282900399504502,2cyclictest2953600-21kworker/10:2+i915-unordered21:52:052
282901399495492,3cyclictest3013791-21kworker/12:2+i915-unordered23:18:054
282901799491490,1cyclictest3065071-21kworker/13:2+i915-unordered23:46:055
282901799491490,1cyclictest2898291-21kworker/13:0+i915-unordered21:07:055
28289679949017,59cyclictest0-21swapper/100:36:501
282898699486485,1cyclictest0-21swapper/623:20:0512
282898499474444,30cyclictest0-21swapper/521:07:0511
282898499473473,0cyclictest0-21swapper/523:46:0511
28290139946825,30cyclictest0-21swapper/1222:53:054
28290139946720,30cyclictest0-21swapper/1221:21:054
282902699465459,5cyclictest1811-21snmpd22:18:187
282900399465465,0cyclictest2819934-21kworker/10:6+i915-unordered19:18:052
28289759946520,30cyclictest0-21swapper/320:01:059
28289759946520,30cyclictest0-21swapper/320:01:059
28290139946320,30cyclictest0-21swapper/1219:48:054
2828990994630,462cyclictest0-21swapper/722:18:1813
282897599463459,4cyclictest1811-21snmpd00:20:169
28289759946015,28cyclictest0-21swapper/319:23:059
282897099460455,5cyclictest1811-21snmpd21:30:598
282901799458457,1cyclictest3022574-21kworker/13:1+i915-unordered23:11:055
28289869945714,30cyclictest0-21swapper/622:30:0512
2828975994569,30cyclictest0-21swapper/320:38:509
2828970994568,29cyclictest0-21swapper/220:25:058
2828975994536,30cyclictest0-21swapper/322:26:059
282901799452452,0cyclictest0-21swapper/1320:18:055
28289869945211,30cyclictest0-21swapper/619:56:0512
28289869945211,30cyclictest0-21swapper/619:56:0512
2828975994512,30cyclictest0-21swapper/300:05:519
282902199450447,3cyclictest1811-21snmpd21:56:396
282901799449419,30cyclictest0-21swapper/1320:46:055
282900399448447,1cyclictest3085192-21kworker/10:0+i915-unordered00:13:052
282899499447447,0cyclictest2945143-21kworker/8:2+i915-unordered21:37:0514
282898499447444,3cyclictest1811-21snmpd23:18:0511
2828970994470,30cyclictest0-21swapper/219:15:278
282902199446445,1cyclictest1811-21snmpd20:35:016
282902699445443,2cyclictest2898299-21kworker/15:2+i915-unordered20:43:057
28289759944316,29cyclictest0-21swapper/319:14:289
282896799443443,0cyclictest0-21swapper/120:03:031
282896799443443,0cyclictest0-21swapper/120:03:031
28289679944323,418cyclictest0-21swapper/121:50:281
28290089944213,0cyclictest1811-21snmpd21:37:053
282899099442441,1cyclictest2877047-21kworker/7:0+i915-unordered20:15:0513
28289869944220,421cyclictest0-21swapper/621:59:2812
28289869944219,422cyclictest0-21swapper/622:19:2712
28289869944124,417cyclictest0-21swapper/622:57:0512
28289869944119,421cyclictest0-21swapper/600:04:2712
28289759944119,0cyclictest0-21swapper/322:47:059
28289759944119,0cyclictest0-21swapper/322:47:059
282900899440437,2cyclictest3026611-21kworker/11:1+i915-unordered23:00:053
28289869944023,416cyclictest0-21swapper/619:50:0512
28289869944023,416cyclictest0-21swapper/619:50:0512
28289869944020,419cyclictest0-21swapper/619:30:4812
28289869944019,420cyclictest0-21swapper/622:14:2812
28289869944019,420cyclictest0-21swapper/620:36:2712
282897999440436,3cyclictest2815375-21kworker/u64:0+events_unbound19:27:0510
28289869943922,416cyclictest0-21swapper/621:36:0512
28289629943920,418cyclictest0-21swapper/019:19:510
282902699438408,30cyclictest0-21swapper/1520:15:057
28290139943822,415cyclictest0-21swapper/1221:18:054
28289869943818,419cyclictest0-21swapper/600:32:2712
28289869943816,421cyclictest0-21swapper/620:41:2712
282897099438437,1cyclictest0-21swapper/221:46:058
282898499437436,0cyclictest2889664-21kworker/5:0+i915-unordered20:18:0511
28289759943721,415cyclictest0-21swapper/321:57:059
282901799436433,2cyclictest3090699-21kworker/13:2+pm00:13:405
282900899436434,2cyclictest2855126-21kworker/11:2+i915-unordered19:45:053
28289869943616,419cyclictest0-21swapper/623:02:0512
28289869943615,420cyclictest0-21swapper/623:07:2812
28290219943518,416cyclictest0-21swapper/1421:11:516
28289949943521,413cyclictest0-21swapper/820:24:4914
28289869943515,419cyclictest0-21swapper/622:11:4712
28289869943513,421cyclictest0-21swapper/620:11:5012
282897999435435,0cyclictest0-21swapper/421:54:5110
282896299435434,1cyclictest2911179-21kworker/0:2+pm21:30:590
282902199434431,2cyclictest3098087-21kworker/u64:0+events_unbound00:25:056
282900899434433,1cyclictest2898087-21kworker/11:2+i915-unordered20:32:053
28289869943413,420cyclictest0-21swapper/623:33:2812
28289869943412,421cyclictest0-21swapper/620:58:4912
282898499434433,1cyclictest2907015-21kworker/5:0+i915-unordered20:46:0511
282899099433432,1cyclictest0-21swapper/720:43:0513
282902199432431,1cyclictest3047810-21kworker/14:1+i915-unordered23:20:056
28289949943221,410cyclictest0-21swapper/819:43:5014
28289869943212,419cyclictest0-21swapper/623:48:2812
28289869943211,420cyclictest0-21swapper/623:57:4912
28289869943210,421cyclictest0-21swapper/623:27:2812
282900899431429,1cyclictest2855126-21kworker/11:2+i915-unordered20:01:053
282900899431429,1cyclictest2855126-21kworker/11:2+i915-unordered20:01:053
2829003994319,421cyclictest0-21swapper/1020:49:272
28289869943112,418cyclictest0-21swapper/600:26:2712
282902199430427,3cyclictest1811-21snmpd00:13:406
28289869943013,416cyclictest0-21swapper/622:27:0512
28289869943012,417cyclictest0-21swapper/620:07:2912
282899499429427,2cyclictest0-21swapper/822:41:0514
282899499429427,2cyclictest0-21swapper/822:41:0514
282899099429429,0cyclictest0-21swapper/720:12:0513
28289869942911,417cyclictest0-21swapper/623:37:4912
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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