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2026-05-22 - 09:10
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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 May 22, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38901349955136,514cyclictest0-21swapper/1123:01:003
389010299551550,1cyclictest3934963-21kworker/4:1+i915-unordered20:07:0010
38901509952524,500cyclictest0-21swapper/1500:00:007
3890121995230,60cyclictest0-21swapper/921:57:0015
38901189952316,506cyclictest0-21swapper/800:19:0014
3890099994910,490cyclictest0-21swapper/320:39:009
389011599490487,3cyclictest3983511-21kworker/7:2+i915-unordered21:12:0013
389010799485484,1cyclictest0-21swapper/500:16:0011
389010299484484,0cyclictest0-21swapper/419:39:0110
389010299484484,0cyclictest0-21swapper/419:39:0110
38900929948320,461cyclictest0-21swapper/100:16:001
38901079947127,443cyclictest70-21ksoftirqd/500:04:0011
38901509946925,29cyclictest0-21swapper/1522:00:427
38901509946822,30cyclictest0-21swapper/1520:15:437
38901189946823,445cyclictest0-21swapper/819:51:4214
38901189946822,30cyclictest0-21swapper/821:43:2414
389009999468466,2cyclictest4079709-21kworker/3:1+i915-unordered23:01:009
38901509946721,28cyclictest0-21swapper/1522:34:227
38900929946625,0cyclictest0-21swapper/100:00:001
38901219946523,30cyclictest0-21swapper/919:47:0015
38901189946519,29cyclictest0-21swapper/800:32:4314
38901029946422,29cyclictest0-21swapper/400:05:0010
3890134994630,3cyclictest0-21swapper/1100:04:333
389010299463405,28cyclictest0-21swapper/423:52:5510
38901219946220,30cyclictest0-21swapper/919:49:0015
389011599461431,30cyclictest0-21swapper/719:10:0113
389012199460459,1cyclictest69750irq/159-i91500:16:0015
38901219946021,30cyclictest0-21swapper/920:46:0015
38900929946019,439cyclictest0-21swapper/123:01:001
38901509945912,29cyclictest0-21swapper/1522:48:447
389011599457456,1cyclictest4076608-21kworker/7:1+i915-unordered23:35:0013
3890092994575,30cyclictest0-21swapper/121:26:441
38900999945614,29cyclictest0-21swapper/319:51:009
3890092994545,448cyclictest0-21swapper/122:57:001
389013499453450,3cyclictest0-21swapper/1123:08:233
3890107994536,28cyclictest0-21swapper/522:08:2311
3890134994520,29cyclictest0-21swapper/1120:18:213
3890115994500,2cyclictest0-21swapper/721:17:1113
38901509944925,28cyclictest0-21swapper/1521:57:457
3890092994494,30cyclictest0-21swapper/122:20:001
3890092994494,30cyclictest0-21swapper/122:20:001
3890150994480,29cyclictest0-21swapper/1521:50:427
38901349944826,421cyclictest0-21swapper/1100:30:223
3890150994478,439cyclictest0-21swapper/1521:09:007
38901509944725,29cyclictest0-21swapper/1519:21:467
38901349944725,421cyclictest0-21swapper/1119:33:453
38901349944725,421cyclictest0-21swapper/1119:33:453
38901399944625,420cyclictest0-21swapper/1219:39:464
38901399944625,420cyclictest0-21swapper/1219:39:464
38901349944625,420cyclictest0-21swapper/1121:59:433
38901349944625,420cyclictest0-21swapper/1121:41:213
38901349944625,420cyclictest0-21swapper/1119:46:443
3890118994461,29cyclictest0-21swapper/822:18:2214
3890118994461,29cyclictest0-21swapper/822:18:2214
38901119944624,421cyclictest0-21swapper/622:36:2212
3890107994460,28cyclictest70-21ksoftirqd/521:41:0011
38900929944625,419cyclictest0-21swapper/100:19:451
38900929944624,419cyclictest0-21swapper/120:06:441
38901509944526,418cyclictest0-21swapper/1523:11:227
38901399944526,418cyclictest0-21swapper/1221:01:464
38901399944525,419cyclictest0-21swapper/1222:36:444
38901399944523,421cyclictest0-21swapper/1200:17:434
38901349944524,420cyclictest0-21swapper/1100:26:213
38901119944523,421cyclictest0-21swapper/621:51:2212
38901349944423,420cyclictest0-21swapper/1122:40:443
38901349944423,419cyclictest0-21swapper/1121:33:213
38901349944423,418cyclictest0-21swapper/1122:03:233
38901219944424,419cyclictest0-21swapper/921:23:2215
38901509944326,415cyclictest0-21swapper/1521:45:437
38901509944319,28cyclictest0-21swapper/1523:21:457
38901119944322,417cyclictest0-21swapper/621:20:2112
389014599442439,2cyclictest4006160-21kworker/u64:6+events_unbound22:57:006
38901419944221,418cyclictest0-21swapper/1323:01:455
389012199442439,2cyclictest3902858-21kworker/9:2+i915-unordered19:35:0115
389012199442439,2cyclictest3902858-21kworker/9:2+i915-unordered19:35:0115
38901079944225,416cyclictest0-21swapper/520:33:2411
38901029944221,420cyclictest0-21swapper/420:16:4710
38901119944123,417cyclictest0-21swapper/620:57:5612
38901509944023,416cyclictest0-21swapper/1519:36:447
38901509944023,416cyclictest0-21swapper/1519:36:447
38901399944019,420cyclictest0-21swapper/1220:15:224
38901349944018,421cyclictest0-21swapper/1120:39:463
38901349944017,419cyclictest0-21swapper/1119:57:233
38901509943919,418cyclictest0-21swapper/1520:29:467
38901509943916,29cyclictest0-21swapper/1519:41:457
38901509943916,29cyclictest0-21swapper/1519:41:457
38901509943913,30cyclictest0-21swapper/1520:01:227
38901349943818,418cyclictest0-21swapper/1121:22:463
38901349943817,419cyclictest0-21swapper/1121:27:213
38901349943817,419cyclictest0-21swapper/1120:26:423
389012199438438,0cyclictest69750irq/159-i91519:39:0115
389012199438438,0cyclictest69750irq/159-i91519:39:0115
38901219943819,418cyclictest0-21swapper/920:28:4615
38901219943818,419cyclictest0-21swapper/920:24:2215
38901509943711,28cyclictest0-21swapper/1500:35:427
38901419943711,29cyclictest0-21swapper/1322:38:225
38901399943717,418cyclictest0-21swapper/1221:19:234
38901219943718,419cyclictest0-21swapper/921:07:4615
38901219943718,418cyclictest0-21swapper/921:17:4315
38901159943720,416cyclictest0-21swapper/722:07:0013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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