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2026-07-25 - 12:00
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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 Jul 25, 2026 00:49:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273913060,298ptp4l0-21swapper/119:05:491
325912297289,6sleep210-21swapper/2119:07:1614
18039917624,112cyclictest0-21swapper/1223:25:174
18379917034,89cyclictest0-21swapper/1822:25:1210
18379917034,89cyclictest0-21swapper/1822:25:1210
18949916838,96cyclictest0-21swapper/3123:35:5825
18379915933,66cyclictest0-21swapper/1820:00:2310
18949915733,69cyclictest0-21swapper/3123:16:1225
178399155153,1cyclictest151rcu_preempt23:16:2231
18949915426,83cyclictest0-21swapper/3120:15:0125
18699914713,89cyclictest0-21swapper/2600:06:2219
18949914525,76cyclictest0-21swapper/3123:10:2025
18699914513,91cyclictest0-21swapper/2623:05:5719
18699914513,80cyclictest0-21swapper/2622:28:3119
18699914513,80cyclictest0-21swapper/2622:28:3119
1724991450,87cyclictest0-21swapper/023:40:360
1724991441,87cyclictest0-21swapper/020:05:130
1724991440,89cyclictest0-21swapper/022:10:160
1724991440,89cyclictest0-21swapper/022:10:160
18899914319,123cyclictest0-21swapper/3022:36:0524
18899914319,123cyclictest0-21swapper/3022:36:0524
1724991431,88cyclictest0-21swapper/021:13:330
18949913953,59cyclictest0-21swapper/3123:06:3425
18949913944,62cyclictest0-21swapper/3120:17:4225
18899913917,93cyclictest0-21swapper/3021:43:2924
18699913813,71cyclictest0-21swapper/2621:35:4019
1783991380,85cyclictest0-21swapper/900:28:3831
1724991380,84cyclictest0-21swapper/020:36:090
1724991380,83cyclictest0-21swapper/019:55:180
18949913745,61cyclictest0-21swapper/3121:57:0525
18949913728,72cyclictest0-21swapper/3100:32:3525
18949913728,66cyclictest0-21swapper/3122:30:1325
18949913728,66cyclictest0-21swapper/3122:30:1325
1848991370,86cyclictest0-21swapper/2123:50:0014
18039913747,61cyclictest0-21swapper/1223:40:214
1803991370,86cyclictest0-21swapper/1219:20:104
18899913619,70cyclictest0-21swapper/3023:18:5024
18039913636,56cyclictest0-21swapper/1222:27:054
18039913636,56cyclictest0-21swapper/1222:27:054
18949913529,72cyclictest0-21swapper/3123:43:2725
18699913513,91cyclictest0-21swapper/2623:39:5319
18379913525,64cyclictest0-21swapper/1820:39:2310
18949913448,61cyclictest0-21swapper/3120:34:1525
1848991340,89cyclictest0-21swapper/2123:09:3714
18379913429,65cyclictest0-21swapper/1821:55:1610
18379913428,68cyclictest0-21swapper/1822:48:4310
18379913428,68cyclictest0-21swapper/1822:48:4310
18039913468,52cyclictest0-21swapper/1219:50:004
18949913346,63cyclictest0-21swapper/3119:55:1525
18949913331,68cyclictest0-21swapper/3121:34:3925
18949913330,66cyclictest0-21swapper/3121:23:2525
18949913328,69cyclictest0-21swapper/3122:09:2325
18949913328,69cyclictest0-21swapper/3122:09:2325
18949913326,68cyclictest0-21swapper/3119:50:5825
1806991330,93cyclictest94-21ksoftirqd/1321:48:465
1806991330,93cyclictest94-21ksoftirqd/1321:48:465
18039913347,62cyclictest0-21swapper/1221:50:364
18949913252,60cyclictest0-21swapper/3119:16:4725
18949913230,70cyclictest0-21swapper/3121:04:4325
18949913230,69cyclictest0-21swapper/3121:54:3925
18949913228,66cyclictest0-21swapper/3123:50:5625
18949913227,69cyclictest0-21swapper/3122:15:1625
18949913227,69cyclictest0-21swapper/3122:15:1625
18949913227,69cyclictest0-21swapper/3100:08:0225
18949913224,66cyclictest0-21swapper/3100:11:1525
18699913213,72cyclictest0-21swapper/2623:10:4519
18379913227,59cyclictest0-21swapper/1821:27:2710
18379913225,62cyclictest0-21swapper/1823:18:0710
18379913216,77cyclictest0-21swapper/1800:17:2610
18949913147,53cyclictest0-21swapper/3120:20:2225
18949913130,70cyclictest0-21swapper/3122:38:1525
18949913130,70cyclictest0-21swapper/3122:38:1525
18949913130,69cyclictest0-21swapper/3121:18:3625
18949913129,66cyclictest0-21swapper/3100:28:5325
18949913128,68cyclictest0-21swapper/3100:23:0025
18949913127,70cyclictest0-21swapper/3123:20:4425
18949913127,69cyclictest0-21swapper/3122:01:5425
18949913127,69cyclictest0-21swapper/3122:01:5425
18949913127,67cyclictest0-21swapper/3100:37:5825
18949913125,64cyclictest0-21swapper/3122:45:1225
18949913125,64cyclictest0-21swapper/3122:45:1225
1889991318,74cyclictest0-21swapper/3020:33:1024
18899913118,84cyclictest0-21swapper/3021:58:0924
18899913114,93cyclictest0-21swapper/3021:09:3024
18379913149,52cyclictest0-21swapper/1800:05:4110
18379913129,67cyclictest0-21swapper/1821:42:2710
18379913128,69cyclictest0-21swapper/1800:32:2410
18379913127,67cyclictest0-21swapper/1822:08:3810
18379913127,67cyclictest0-21swapper/1822:08:3810
18039913133,65cyclictest0-21swapper/1220:17:104
18039913125,75cyclictest0-21swapper/1222:37:144
18039913125,75cyclictest0-21swapper/1222:37:144
18039913122,75cyclictest0-21swapper/1200:20:544
18039913122,67cyclictest0-21swapper/1223:38:104
18949913039,58cyclictest0-21swapper/3122:41:5925
18949913039,58cyclictest0-21swapper/3122:41:5925
18949913028,65cyclictest0-21swapper/3121:14:5225
18949913025,61cyclictest0-21swapper/3123:26:5325
18379913046,64cyclictest0-21swapper/1823:12:4610
18379913030,73cyclictest0-21swapper/1800:37:1310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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