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2026-08-15 - 16:43
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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 rackcslot8.osadl.org (updated Sat Aug 15, 2026 12:49:09)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1646299316118,1cyclictest151rcu_preempt11:40:3214
330891273265,6phc2sys0-21swapper/207:06:3412
3273912480,240ptp4l0-21swapper/107:07:531
163669920622,3cyclictest151rcu_preempt11:38:220
164379917230,141cyclictest0-21swapper/1609:40:008
164379917229,142cyclictest0-21swapper/1612:22:388
164379917127,143cyclictest0-21swapper/1610:51:368
164379917127,143cyclictest0-21swapper/1610:51:368
164379916826,107cyclictest0-21swapper/1609:51:298
164379916726,96cyclictest0-21swapper/1611:20:138
164379916726,96cyclictest0-21swapper/1611:20:128
164379916531,125cyclictest0-21swapper/1611:40:158
164379916118,126cyclictest0-21swapper/1611:32:198
164379916118,126cyclictest0-21swapper/1611:32:198
164379915727,87cyclictest0-21swapper/1609:10:198
164069915569,85cyclictest64-21ksoftirqd/810:42:5530
164069915569,85cyclictest64-21ksoftirqd/810:42:5530
164379915030,82cyclictest0-21swapper/1611:10:198
164379915030,82cyclictest0-21swapper/1611:10:198
163719914932,97cyclictest0-21swapper/109:53:191
163719914729,114cyclictest0-21swapper/110:36:031
163719914729,114cyclictest0-21swapper/110:36:031
163719914727,17cyclictest0-21swapper/111:35:551
164379914633,71cyclictest0-21swapper/1610:49:298
164379914633,71cyclictest0-21swapper/1610:49:298
163719914526,113cyclictest0-21swapper/110:59:491
163719914526,113cyclictest0-21swapper/110:59:491
16406991440,85cyclictest0-21swapper/809:12:0530
164109914325,43cyclictest0-21swapper/912:07:5531
163719913954,59cyclictest0-21swapper/111:56:301
16371991390,87cyclictest0-21swapper/107:40:181
164379913822,79cyclictest0-21swapper/1611:56:168
164109913847,60cyclictest0-21swapper/907:37:1031
164379913721,115cyclictest0-21swapper/1612:05:558
164379913715,64cyclictest0-21swapper/1611:00:108
164379913715,64cyclictest0-21swapper/1611:00:098
164109913755,60cyclictest0-21swapper/909:49:0931
164109913755,60cyclictest0-21swapper/909:49:0931
164109913742,65cyclictest0-21swapper/907:13:0731
164109913728,72cyclictest0-21swapper/910:57:5231
164109913728,72cyclictest0-21swapper/910:57:5131
164109913726,71cyclictest0-21swapper/909:30:4531
165019913630,61cyclictest0-21swapper/2708:13:1520
164109913647,58cyclictest0-21swapper/909:13:2131
164109913645,59cyclictest0-21swapper/910:17:3031
164109913629,73cyclictest0-21swapper/909:51:0531
164109913548,86cyclictest0-21swapper/909:17:3831
164109913541,59cyclictest0-21swapper/909:05:2131
164109913530,74cyclictest0-21swapper/908:45:3531
164109913529,71cyclictest0-21swapper/912:14:0131
164109913529,69cyclictest0-21swapper/909:21:2231
163719913550,63cyclictest0-21swapper/112:08:471
163719913526,75cyclictest0-21swapper/109:13:321
163719913519,75cyclictest0-21swapper/107:32:461
165019913428,64cyclictest0-21swapper/2708:15:2520
164269913432,86cyclictest0-21swapper/1310:42:085
164269913432,86cyclictest0-21swapper/1310:42:085
164149913446,51cyclictest0-21swapper/1011:32:372
164149913446,51cyclictest0-21swapper/1011:32:362
164109913430,75cyclictest0-21swapper/910:27:3931
164109913430,75cyclictest0-21swapper/910:27:3831
164109913428,73cyclictest0-21swapper/910:48:3031
164109913428,73cyclictest0-21swapper/910:48:3031
164109913428,70cyclictest0-21swapper/909:55:3531
165019913346,63cyclictest0-21swapper/2711:33:4220
165019913346,63cyclictest0-21swapper/2711:33:4120
165019913329,66cyclictest0-21swapper/2712:04:4120
165019913328,67cyclictest0-21swapper/2709:56:5620
16501991330,70cyclictest0-21swapper/2710:50:2320
16501991330,70cyclictest0-21swapper/2710:50:2320
164269913329,102cyclictest0-21swapper/1307:47:265
164109913341,58cyclictest0-21swapper/912:01:1131
164109913331,74cyclictest0-21swapper/910:33:3231
164109913331,74cyclictest0-21swapper/910:33:3131
164109913331,73cyclictest0-21swapper/911:59:3431
164109913330,77cyclictest0-21swapper/911:08:1631
164069913331,83cyclictest0-21swapper/811:07:2730
164069913326,83cyclictest0-21swapper/809:45:1330
164069913326,83cyclictest0-21swapper/809:45:1230
163719913351,58cyclictest0-21swapper/108:03:291
163719913330,70cyclictest0-21swapper/109:19:381
163719913328,73cyclictest0-21swapper/109:24:261
163719913328,71cyclictest0-21swapper/110:31:361
163719913328,71cyclictest0-21swapper/110:31:361
165019913231,70cyclictest0-21swapper/2709:23:3320
165019913231,65cyclictest0-21swapper/2711:50:1520
165019913230,67cyclictest0-21swapper/2711:13:2320
165019913230,67cyclictest0-21swapper/2711:13:2220
165019913230,66cyclictest0-21swapper/2709:33:2620
165019913229,68cyclictest0-21swapper/2709:41:5820
165019913227,69cyclictest0-21swapper/2709:15:1520
16437991323,51cyclictest0-21swapper/1609:34:398
164109913254,60cyclictest0-21swapper/910:04:0831
164109913246,65cyclictest0-21swapper/908:52:3031
164109913232,77cyclictest0-21swapper/912:28:2631
164109913231,68cyclictest0-21swapper/907:34:3131
164109913230,74cyclictest0-21swapper/910:24:5831
164109913230,74cyclictest0-21swapper/910:24:5831
164109913229,67cyclictest0-21swapper/911:38:1831
164109913227,70cyclictest0-21swapper/911:18:5731
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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