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2026-08-21 - 19:01
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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 Fri Aug 21, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2638506995791,42cyclictest0-21swapper/521:02:0911
26385389954827,520cyclictest0-21swapper/1200:34:084
2638538995424,537cyclictest0-21swapper/1223:37:094
26384899953817,520cyclictest0-21swapper/120:14:091
263852099524523,1cyclictest0-21swapper/920:44:0915
263851099519516,2cyclictest2687618-21kworker/6:1+i915-unordered20:22:0912
263854199516514,2cyclictest2731715-21kworker/13:0+i915-unordered21:02:095
26385209950919,489cyclictest0-21swapper/922:51:0915
263850199505502,2cyclictest2820245-21kworker/4:1+i915-unordered00:34:0810
26384939950022,477cyclictest0-21swapper/223:01:098
263850199498496,2cyclictest2848351-21kworker/4:4+i915-unordered23:37:0910
26384939949734,462cyclictest0-21swapper/221:02:098
26384939949723,0cyclictest0-21swapper/200:11:088
26384939949631,464cyclictest0-21swapper/222:37:098
263853399494491,2cyclictest0-21swapper/1120:47:093
26384939949331,461cyclictest0-21swapper/220:22:098
263852699492492,0cyclictest0-21swapper/1021:58:092
263852699492492,0cyclictest0-21swapper/1021:58:092
263853399486485,1cyclictest0-21swapper/1120:54:093
263854499482480,2cyclictest0-21swapper/1420:22:096
26384939948219,462cyclictest0-21swapper/223:37:098
263854199481480,1cyclictest2864483-21kworker/13:0+i915-unordered00:17:085
263852099478478,0cyclictest2695543-21kworker/9:2+i915-unordered20:14:0915
263851399478447,31cyclictest0-21swapper/722:37:0913
2638493994750,474cyclictest0-21swapper/200:34:088
26384899947424,30cyclictest0-21swapper/123:37:521
263852699471471,0cyclictest69750irq/159-i91500:11:082
263849399471470,1cyclictest0-21swapper/220:16:098
26385499947019,30cyclictest0-21swapper/1500:01:317
263849399470469,1cyclictest0-21swapper/220:47:098
26385499946823,29cyclictest0-21swapper/1523:45:527
26385499946820,30cyclictest0-21swapper/1523:03:317
263849399467465,1cyclictest2765209-21kworker/2:2+i915-unordered21:46:098
26385499946619,29cyclictest0-21swapper/1523:36:317
26385019946627,29cyclictest0-21swapper/421:03:0910
263849399466465,1cyclictest0-21swapper/223:47:098
26385499946518,30cyclictest0-21swapper/1519:40:557
26385499946420,29cyclictest0-21swapper/1519:51:317
26385499946418,29cyclictest0-21swapper/1522:43:527
26385499946417,30cyclictest0-21swapper/1523:16:307
26385019946423,29cyclictest0-21swapper/400:08:0810
2638493994620,461cyclictest0-21swapper/222:51:098
263850199460458,2cyclictest0-21swapper/419:21:0910
26384879946013,29cyclictest0-21swapper/023:00:310
26384879946012,28cyclictest0-21swapper/021:03:530
26384939945915,439cyclictest2751978-21kworker/2:2+i915-unordered21:26:098
26384879945911,29cyclictest0-21swapper/019:38:320
26385019945714,29cyclictest0-21swapper/421:36:0910
263852099456452,3cyclictest1818-21snmpd20:26:0215
26385019945614,30cyclictest0-21swapper/421:44:0910
2638533994556,29cyclictest0-21swapper/1121:10:323
263851399455452,2cyclictest2848309-21kworker/7:2+i915-unordered23:36:0913
26385269945413,30cyclictest0-21swapper/1021:17:092
263848999454453,1cyclictest0-21swapper/123:42:211
26384879945411,29cyclictest0-21swapper/020:17:520
2638506994538,444cyclictest0-21swapper/521:06:0911
263853399452452,0cyclictest2884567-21kworker/11:1+i915-unordered00:09:083
263850199452449,2cyclictest2804213-21kworker/4:6+events23:10:3210
26385019945214,28cyclictest0-21swapper/419:54:0910
2638489994522,447cyclictest2864662-21sleep23:50:041
263853399451448,2cyclictest2663191-21kworker/11:0+pm19:37:433
263853899450446,3cyclictest2731860-21kworker/12:0+pm21:01:224
2638506994500,30cyclictest0-21swapper/522:25:3211
2638520994494,29cyclictest2839493-21rt-features23:10:3215
263849399449447,2cyclictest0-21swapper/200:17:088
2638489994490,29cyclictest0-21swapper/100:10:541
2638487994490,449cyclictest0-21swapper/020:26:020
263849399448447,1cyclictest0-21swapper/219:52:098
263849799447444,2cyclictest2711566-21kworker/u64:6+events_unbound20:42:529
263849399447447,0cyclictest0-21swapper/200:09:088
2638489994470,29cyclictest0-21swapper/122:30:311
26385269944626,30cyclictest0-21swapper/1019:12:092
26385269944626,30cyclictest0-21swapper/1019:12:092
26384899944524,419cyclictest0-21swapper/122:55:311
26385339944423,420cyclictest0-21swapper/1100:25:293
263851399444442,1cyclictest0-21swapper/719:56:0913
26384939944422,421cyclictest0-21swapper/221:15:328
26384899944423,419cyclictest0-21swapper/123:07:311
26385499944323,417cyclictest0-21swapper/1519:38:537
26385499944315,30cyclictest0-21swapper/1519:07:327
26385499944315,30cyclictest0-21swapper/1519:07:327
2638510994431,29cyclictest0-21swapper/620:27:0912
26385069944322,418cyclictest0-21swapper/519:40:3211
26384899944324,419cyclictest0-21swapper/123:57:301
26384899944323,417cyclictest0-21swapper/123:32:511
26384899944323,417cyclictest0-21swapper/123:27:301
26385499944223,416cyclictest0-21swapper/1519:45:517
26385499944217,30cyclictest0-21swapper/1520:29:527
26385389944220,421cyclictest0-21swapper/1222:29:304
263852699442441,1cyclictest69750irq/159-i91523:01:092
26384939944218,423cyclictest43-21ksoftirqd/219:06:098
26384939944218,423cyclictest43-21ksoftirqd/219:06:098
26384899944222,418cyclictest0-21swapper/121:17:311
26384899944220,421cyclictest0-21swapper/123:11:301
26384899944219,422cyclictest0-21swapper/120:41:301
263850699441441,0cyclictest0-21swapper/500:22:5211
26384939944119,421cyclictest0-21swapper/223:25:308
26384899944121,417cyclictest0-21swapper/119:26:551
26384899944120,420cyclictest0-21swapper/121:27:521
26384899944120,419cyclictest0-21swapper/120:31:311
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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