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2025-11-24 - 06:29
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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 Mon Nov 24, 2025 00:49:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
155062248244,3sleep00-21swapper/019:10:000
155062248244,3sleep00-21swapper/019:10:000
2482911900,182ptp4l0-21swapper/119:09:521
2482911900,182ptp4l0-21swapper/119:09:521
168069918716,148cyclictest0-21swapper/1800:25:1810
168069918716,148cyclictest0-21swapper/1800:25:1810
168069918516,121cyclictest0-21swapper/1800:33:5110
168069918516,121cyclictest0-21swapper/1800:33:5110
168069918416,122cyclictest0-21swapper/1822:33:0610
168069917916,106cyclictest0-21swapper/1823:26:2910
168069917916,106cyclictest0-21swapper/1823:26:2910
1685599176175,1cyclictest0-21swapper/2521:33:5218
167469917321,145cyclictest0-21swapper/1019:55:182
168559917059,62cyclictest151rcu_preempt22:09:4018
167469916732,102cyclictest0-21swapper/1022:00:202
166779916713,110cyclictest0-21swapper/021:24:110
167469916627,105cyclictest0-21swapper/1021:50:492
168229916439,109cyclictest0-21swapper/2022:10:2613
166779916413,108cyclictest0-21swapper/021:49:230
168069916316,108cyclictest0-21swapper/1821:33:1310
168229915544,70cyclictest0-21swapper/2000:05:2513
168229915544,70cyclictest0-21swapper/2000:05:2513
168229915430,88cyclictest0-21swapper/2020:10:1313
168229915330,91cyclictest0-21swapper/2023:26:3713
168229915330,91cyclictest0-21swapper/2023:26:3713
168069915316,87cyclictest0-21swapper/1823:08:0310
167469915330,84cyclictest0-21swapper/1023:24:142
168229915228,83cyclictest0-21swapper/2022:25:2513
168229915170,81cyclictest137-21ksoftirqd/2022:30:1413
16746991510,44cyclictest0-21swapper/1023:41:212
16746991510,44cyclictest0-21swapper/1023:41:212
16760991500,88cyclictest0-21swapper/1223:15:024
168559914823,89cyclictest0-21swapper/2519:45:2418
168069914816,99cyclictest0-21swapper/1822:12:4410
168229914710,64cyclictest151rcu_preempt21:15:2513
168229914623,83cyclictest0-21swapper/2021:33:3513
166779914613,84cyclictest0-21swapper/021:35:550
16798991440,85cyclictest0-21swapper/1723:40:569
16798991440,85cyclictest0-21swapper/1723:40:569
16822991430,85cyclictest0-21swapper/2021:55:1313
168069914116,95cyclictest0-21swapper/1821:43:4910
167469914129,61cyclictest0-21swapper/1023:30:142
167469914129,61cyclictest0-21swapper/1023:30:142
16677991410,89cyclictest0-21swapper/000:09:320
16677991410,89cyclictest0-21swapper/000:09:320
167539914013,61cyclictest0-21swapper/1120:25:143
168069913950,62cyclictest0-21swapper/1821:23:3610
16760991390,80cyclictest11296-21phc2sys-jitter20:45:214
167609913853,62cyclictest0-21swapper/1223:33:104
167609913853,62cyclictest0-21swapper/1223:33:094
167609913850,52cyclictest0-21swapper/1223:08:164
167609913849,57cyclictest0-21swapper/1222:34:234
167609913848,60cyclictest0-21swapper/1200:30:234
167609913848,60cyclictest0-21swapper/1200:30:234
167469913845,46cyclictest0-21swapper/1023:45:122
167469913845,46cyclictest0-21swapper/1023:45:122
167469913842,86cyclictest0-21swapper/1021:48:032
16822991370,85cyclictest0-21swapper/2023:50:5613
16822991370,85cyclictest0-21swapper/2023:50:5613
168069913744,63cyclictest0-21swapper/1800:19:2510
168069913744,63cyclictest0-21swapper/1800:19:2510
168069913648,53cyclictest0-21swapper/1800:22:0610
168069913648,53cyclictest0-21swapper/1800:22:0610
16798991360,85cyclictest0-21swapper/1723:58:359
16798991360,85cyclictest0-21swapper/1723:58:349
167609913648,57cyclictest0-21swapper/1200:13:474
167609913648,57cyclictest0-21swapper/1200:13:474
167469913651,54cyclictest0-21swapper/1020:45:372
167609913529,68cyclictest0-21swapper/1200:15:224
167609913529,68cyclictest0-21swapper/1200:15:224
167609913528,72cyclictest0-21swapper/1221:57:294
167609913528,70cyclictest0-21swapper/1221:31:204
167609913526,66cyclictest0-21swapper/1221:23:504
167609913523,67cyclictest0-21swapper/1221:13:404
16760991350,81cyclictest0-21swapper/1220:05:334
16855991340,81cyclictest0-21swapper/2521:05:2118
168069913429,71cyclictest0-21swapper/1800:14:5510
168069913429,71cyclictest0-21swapper/1800:14:5410
167609913433,74cyclictest0-21swapper/1223:01:524
167609913431,72cyclictest0-21swapper/1223:27:494
167609913431,72cyclictest0-21swapper/1223:27:494
167609913429,71cyclictest0-21swapper/1223:24:534
167609913429,33cyclictest0-21swapper/1222:10:194
168069913345,60cyclictest0-21swapper/1823:30:4610
168069913345,60cyclictest0-21swapper/1823:30:4610
167609913332,77cyclictest0-21swapper/1200:00:254
167609913332,77cyclictest0-21swapper/1200:00:254
167609913331,72cyclictest0-21swapper/1222:27:414
167609913330,75cyclictest0-21swapper/1223:43:334
167609913330,75cyclictest0-21swapper/1223:43:334
167609913328,73cyclictest0-21swapper/1222:54:554
167469913326,73cyclictest0-21swapper/1021:41:442
166779913346,63cyclictest0-21swapper/022:36:500
168069913252,62cyclictest0-21swapper/1822:49:3810
168069913241,65cyclictest0-21swapper/1822:38:5710
168069913232,64cyclictest0-21swapper/1823:47:1910
168069913232,64cyclictest0-21swapper/1823:47:1910
168069913228,67cyclictest0-21swapper/1823:04:1910
167609913231,65cyclictest0-21swapper/1219:30:174
167609913226,67cyclictest0-21swapper/1222:55:444
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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