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2025-12-20 - 17:11
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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 rack0slot7.osadl.org (updated Sat Dec 20, 2025 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17635412136104,29sleep140-21swapper/1419:05:536
283663721170,0sleep102836626-21dd23:57:022
289217621090,0sleep12892150-21dd00:14:461
278170121080,0sleep60-21swapper/623:42:3312
278170121080,0sleep60-21swapper/623:42:3212
190032521010,0sleep00-21swapper/019:44:550
176395529378,12sleep00-21swapper/019:08:360
176409629088,1sleep40-21swapper/419:09:2910
176412628437,39sleep150-21swapper/1519:09:407
176351227977,1sleep50-21swapper/519:05:4411
174653027569,4sleep10-21swapper/119:05:091
176398827266,4sleep130-21swapper/1319:08:485
1764641996838,30cyclictest31616-21Isolated12:10:1914
174595926358,2sleep90-21swapper/919:05:0015
1764646996055,5cyclictest2759088-21x0vncserver20:37:432
176464599590,59cyclictest0-21swapper/921:02:2215
176355625737,13sleep30-21swapper/319:05:599
176386225545,5sleep100-21swapper/1019:07:572
1764639995213,12cyclictest31616-21Isolated12:10:1913
1764660995150,1cyclictest310-1kworker/u65:0+i915_flip20:45:325
1764635995146,5cyclictest3156-21MuninnPageCache21:43:1312
176466099502,5cyclictest4696-21Xorg20:40:305
1764630995048,1cyclictest0-21swapper/420:40:0710
176369925039,6sleep120-21swapper/1219:06:554
176464699490,1cyclictest1807766-21MediaPD~der2
1764626994944,4cyclictest31616-21Isolated12:10:199
176462699490,0cyclictest0-21swapper/319:53:549
1764651994810,31cyclictest9080-21WebExtensions20:40:433
1764639994819,3cyclictest4696-21Xorg23:41:1213
1764639994819,3cyclictest4696-21Xorg23:41:1113
1764635994839,7cyclictest4696-21Xorg20:30:3812
1764624994841,3cyclictest0-21swapper/220:37:438
176355924837,6sleep60-21swapper/619:06:0112
1764656994744,2cyclictest0-21swapper/1220:40:234
1764651994719,27cyclictest31616-21Isolated12:10:193
1764639994719,4cyclictest4696-21Xorg21:36:0613
176466099460,27cyclictest0-21swapper/1320:29:515
1764639994618,3cyclictest4696-21Xorg20:29:4113
1764626994610,36cyclictest1782650-21MediaPD~oder9
176462099460,0cyclictest0-21swapper/121:46:141
1764660994517,27cyclictest31616-21Isolated12:10:195
1764651994518,27cyclictest0-21swapper/1119:36:083
1764641994518,1cyclictest8889-21WRRende~ckend#119:56:5614
176463299457,38cyclictest0-21swapper/520:10:3111
176463299454,38cyclictest4969-21gnome-shell19:10:3911
1764620994544,1cyclictest310-1kworker/u65:0+i915_flip19:35:331
1764617994526,19cyclictest0-21swapper/019:47:330
1764617994517,25cyclictest17-21ksoftirqd/021:55:270
1764662994442,1cyclictest0-21swapper/1421:00:206
176466099445,32cyclictest8770-21Socket12:10:195
176466099444,7cyclictest4696-21Xorg20:59:425
1764660994415,28cyclictest31616-21Isolated12:10:195
1764660994415,28cyclictest31616-21Isolated12:10:195
1764651994419,25cyclictest0-21swapper/1120:10:153
1764639994410,21cyclictest1918428-21StreamT~13
1764617994421,22cyclictest0-21swapper/021:44:400
1764666994343,0cyclictest0-21swapper/1520:59:127
1764666994341,1cyclictest0-21swapper/1520:11:207
1764660994317,7cyclictest0-21swapper/1320:08:235
1764660994317,7cyclictest0-21swapper/1320:08:225
1764660994315,27cyclictest4696-21Xorg21:22:505
176466099430,43cyclictest2231143-21StreamT~5
1764651994318,6cyclictest0-21swapper/1119:13:263
1764651994314,24cyclictest0-21swapper/1120:37:413
1764651994313,1cyclictest0-21swapper/1121:00:153
1764646994341,1cyclictest2072-21snmpd19:49:292
1764632994339,4cyclictest0-21swapper/520:25:3311
1764630994343,0cyclictest0-21swapper/419:42:1110
1764624994343,0cyclictest0-21swapper/219:53:548
176462099435,38cyclictest0-21swapper/123:26:521
176462099430,43cyclictest0-21swapper/119:20:181
1764660994219,23cyclictest0-21swapper/1321:25:385
1764660994219,23cyclictest0-21swapper/1321:25:385
1764660994218,5cyclictest0-21swapper/1319:31:375
1764660994217,25cyclictest4969-21gnome-shell20:11:125
1764660994214,27cyclictest4696-21Xorg21:40:465
1764660994214,27cyclictest0-21swapper/1319:54:315
176466099420,42cyclictest0-21swapper/1321:35:395
1764651994218,5cyclictest4969-21gnome-shell19:55:153
1764651994213,1cyclictest0-21swapper/1119:23:393
176465199420,41cyclictest3092487-21Isolated12:10:193
1764646994239,3cyclictest2212768-21dd21:07:032
1764646994239,3cyclictest2212768-21dd21:07:022
1764635994242,0cyclictest0-21swapper/621:52:0612
1764635994212,30cyclictest97550irq/172-i91519:12:2512
1764632994216,1cyclictest0-21swapper/519:38:0211
1764626994242,0cyclictest0-21swapper/321:28:119
1764626994242,0cyclictest0-21swapper/321:28:119
1764626994242,0cyclictest0-21swapper/319:42:419
1764626994241,1cyclictest203450irq/142-enp2s0-tx-121:52:249
176466099412,6cyclictest3617507-21Compositor21:08:475
176466099412,6cyclictest3617507-21Compositor21:08:475
1764660994116,5cyclictest1955298-21dd19:58:175
1764660994115,26cyclictest4969-21gnome-shell21:49:325
1764660994114,0cyclictest0-21swapper/1319:41:305
1764651994117,23cyclictest4696-21Xorg21:54:063
176464699410,0cyclictest0-21swapper/1019:30:052
1764641994139,2cyclictest0-21swapper/820:56:3614
1764639994140,1cyclictest2072-21snmpd20:03:4013
1764639994124,14cyclictest9328-21Timer21:08:4813
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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