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2025-12-05 - 22:46
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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 Dec 05, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
170857199518518,0cyclictest1832396-21kworker/9:0+i915-unordered21:32:2315
170858199501500,1cyclictest1943625-21kworker/11:2+i915-unordered00:32:233
1708586994868,475cyclictest1824396-21sleep21:29:194
170858199484482,2cyclictest0-21swapper/1121:45:233
170858699476475,1cyclictest0-21swapper/1223:08:234
17085429947526,30cyclictest0-21swapper/100:18:061
17085429947226,29cyclictest0-21swapper/100:03:071
17085429947224,29cyclictest0-21swapper/122:24:051
170858199466464,2cyclictest0-21swapper/1122:28:233
17085639946518,29cyclictest0-21swapper/721:10:2313
17085769946415,29cyclictest0-21swapper/1022:56:042
17085529946419,30cyclictest0-21swapper/421:26:2310
170857199463462,1cyclictest0-21swapper/922:43:2315
17085719946320,441cyclictest0-21swapper/920:38:2315
17085719946320,441cyclictest0-21swapper/920:38:2315
17085389946112,29cyclictest0-21swapper/020:19:450
17085769946013,29cyclictest0-21swapper/1021:27:072
1708598994591,457cyclictest0-21swapper/1520:38:237
1708598994591,457cyclictest0-21swapper/1520:38:237
17085769945911,30cyclictest0-21swapper/1023:13:072
17085769945910,28cyclictest0-21swapper/1020:39:052
17085769945910,28cyclictest0-21swapper/1020:39:052
1708576994588,30cyclictest0-21swapper/1021:40:092
17085429945810,30cyclictest0-21swapper/120:05:461
17085389945810,29cyclictest0-21swapper/000:00:060
1708576994579,29cyclictest0-21swapper/1000:18:442
170857199454452,2cyclictest1751154-21kworker/9:0+i915-unordered20:05:2315
170856399454453,1cyclictest1738027-21kworker/7:2+i915-unordered19:43:2313
17085619945220,425cyclictest0-21swapper/619:22:0712
1708542994527,28cyclictest0-21swapper/122:40:441
17085499945128,422cyclictest1893243-21ntpq22:44:449
17085429945125,29cyclictest0-21swapper/120:24:091
1708542994512,30cyclictest0-21swapper/100:13:081
17085429944924,30cyclictest0-21swapper/120:54:061
1708557994470,29cyclictest0-21swapper/521:34:4411
170859499446444,2cyclictest1939427-21kworker/14:1+i915-unordered23:56:236
170858199446446,0cyclictest0-21swapper/1122:13:233
170854499446416,30cyclictest0-21swapper/222:25:238
17085639944522,30cyclictest0-21swapper/721:44:1913
17085529944524,420cyclictest0-21swapper/423:43:4510
17085989944424,420cyclictest0-21swapper/1522:24:447
17085529944426,418cyclictest0-21swapper/419:57:0810
17085499944425,419cyclictest0-21swapper/320:05:079
17085499944423,420cyclictest0-21swapper/322:25:069
17085769944322,420cyclictest0-21swapper/1000:06:462
17085499944323,420cyclictest0-21swapper/321:23:089
17085769944223,418cyclictest0-21swapper/1022:43:082
17085769944222,419cyclictest0-21swapper/1021:38:462
17085769944222,419cyclictest0-21swapper/1020:50:442
17085529944219,422cyclictest0-21swapper/422:53:0510
17085869944125,415cyclictest0-21swapper/1222:50:234
17085869944125,415cyclictest0-21swapper/1221:48:234
17085819944122,418cyclictest0-21swapper/1100:21:233
17085769944121,419cyclictest0-21swapper/1000:24:082
170858699440438,2cyclictest0-21swapper/1223:02:234
17085769944021,418cyclictest0-21swapper/1000:10:462
17085769944019,420cyclictest0-21swapper/1020:10:082
170859499439437,2cyclictest1737953-21kworker/14:0+i915-unordered20:26:236
17085529943916,422cyclictest0-21swapper/422:16:0910
17085989943814,420cyclictest0-21swapper/1500:11:457
17085769943819,418cyclictest0-21swapper/1019:24:062
17085619943819,418cyclictest0-21swapper/621:21:2312
17085989943710,30cyclictest0-21swapper/1523:53:067
170859499437435,2cyclictest1737953-21kworker/14:0+i915-unordered20:31:236
170859499437435,2cyclictest1737953-21kworker/14:0+i915-unordered20:31:236
17085869943714,28cyclictest0-21swapper/1223:40:234
17085769943714,29cyclictest0-21swapper/1019:15:232
1708576994370,25cyclictest0-21swapper/1020:55:472
170855799437437,0cyclictest0-21swapper/523:50:2411
170855799437437,0cyclictest0-21swapper/521:30:2411
17085389943721,416cyclictest0-21swapper/020:45:230
170858199436436,0cyclictest0-21swapper/1100:02:063
17085769943616,420cyclictest0-21swapper/1022:12:082
17085769943615,420cyclictest0-21swapper/1020:02:442
17085499943615,420cyclictest0-21swapper/321:43:239
17085989943516,418cyclictest0-21swapper/1520:59:457
17085989943514,421cyclictest0-21swapper/1519:37:467
17085989943514,420cyclictest0-21swapper/1522:32:097
17085989943514,418cyclictest0-21swapper/1500:29:047
17085529943516,419cyclictest0-21swapper/423:00:2310
17085389943519,29cyclictest0-21swapper/021:08:090
17085989943414,418cyclictest0-21swapper/1520:53:447
17085989943413,420cyclictest0-21swapper/1500:16:457
17085989943413,419cyclictest0-21swapper/1523:07:447
17085989943413,419cyclictest0-21swapper/1519:56:467
17085989943413,419cyclictest0-21swapper/1519:34:097
170858199434434,0cyclictest0-21swapper/1120:01:473
17085819943416,417cyclictest0-21swapper/1121:52:233
17085769943413,419cyclictest0-21swapper/1022:46:462
170856199434433,1cyclictest77250irq/159-i91523:56:2312
17085989943314,417cyclictest0-21swapper/1520:00:087
17085989943312,420cyclictest0-21swapper/1521:25:447
17085769943314,417cyclictest0-21swapper/1022:20:062
17085769943311,420cyclictest0-21swapper/1020:47:062
17085389943313,420cyclictest0-21swapper/000:04:440
17085819943212,419cyclictest0-21swapper/1123:44:463
17085449943218,414cyclictest0-21swapper/222:54:188
1708542994328,29cyclictest0-21swapper/120:19:051
1708542994326,29cyclictest0-21swapper/120:57:061
17085989943110,419cyclictest0-21swapper/1522:35:457
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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