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2026-06-19 - 04:18
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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 Fri Jun 19, 2026 00:49:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1915999321121,198cyclictest151rcu_preempt00:15:509
19119991900,148cyclictest0-21swapper/1220:55:234
191769917611,134cyclictest0-21swapper/1923:48:1611
3273911700,162ptp4l0-21swapper/119:05:481
19176991630,116cyclictest11990-21latency_hist00:30:0111
330891161152,6phc2sys0-21swapper/219:05:1212
190949916024,131cyclictest0-21swapper/923:36:2431
191519915754,59cyclictest112-21ksoftirqd/1600:15:368
190949915324,96cyclictest0-21swapper/900:23:3431
192449915111,44cyclictest24020-21taskset20:28:5322
19119991470,83cyclictest0-21swapper/1219:14:554
19119991470,83cyclictest0-21swapper/1219:14:554
19119991470,82cyclictest0-21swapper/1222:25:124
19176991450,83cyclictest0-21swapper/1920:10:1711
19176991450,83cyclictest0-21swapper/1920:10:1711
191809914448,47cyclictest151rcu_preempt21:40:2413
190949914412,131cyclictest70-21ksoftirqd/921:28:4031
192449914221,75cyclictest0-21swapper/2922:06:5922
190949914223,75cyclictest0-21swapper/923:12:2131
19176991411,83cyclictest0-21swapper/1900:10:1511
19119991411,86cyclictest0-21swapper/1223:25:174
191199914029,69cyclictest0-21swapper/1223:20:004
191199914026,26cyclictest0-21swapper/1221:57:224
19119991400,83cyclictest0-21swapper/1223:47:294
192449913945,59cyclictest0-21swapper/2919:19:4122
192449913945,59cyclictest0-21swapper/2919:19:4122
192449913940,62cyclictest0-21swapper/2920:35:2122
191769913951,58cyclictest0-21swapper/1900:34:3611
19119991390,82cyclictest0-21swapper/1223:55:444
190949913951,87cyclictest70-21ksoftirqd/922:08:4431
19252991380,83cyclictest0-21swapper/3021:35:5824
192449913847,65cyclictest0-21swapper/2921:22:3522
19180991387,123cyclictest151rcu_preempt20:06:2513
19180991387,123cyclictest151rcu_preempt20:06:2513
19119991380,81cyclictest0-21swapper/1222:20:224
192449913738,63cyclictest0-21swapper/2922:50:1522
191809913720,106cyclictest151rcu_preempt21:14:4513
19176991370,84cyclictest0-21swapper/1922:53:1611
191199913744,65cyclictest0-21swapper/1221:40:184
191199913727,68cyclictest0-21swapper/1221:23:084
19119991371,84cyclictest0-21swapper/1221:30:134
19119991370,85cyclictest0-21swapper/1223:01:454
19119991370,82cyclictest0-21swapper/1219:40:024
19119991370,82cyclictest0-21swapper/1219:40:024
19119991370,82cyclictest0-21swapper/1219:20:164
19119991370,82cyclictest0-21swapper/1219:20:154
192449913648,60cyclictest0-21swapper/2922:43:5022
192449913640,63cyclictest0-21swapper/2919:28:4622
192449913640,63cyclictest0-21swapper/2919:28:4522
192449913629,83cyclictest0-21swapper/2921:52:3122
191809913612,106cyclictest151rcu_preempt20:41:1013
191809913610,118cyclictest151rcu_preempt21:17:1013
191769913612,104cyclictest0-21swapper/1923:31:4611
19176991360,79cyclictest0-21swapper/1900:23:3711
191709913628,68cyclictest0-21swapper/1823:37:0610
19151991360,83cyclictest0-21swapper/1600:11:158
191199913640,61cyclictest0-21swapper/1221:39:234
191199913627,68cyclictest0-21swapper/1222:10:134
19119991361,83cyclictest0-21swapper/1222:18:134
19119991360,82cyclictest0-21swapper/1222:49:134
19119991360,82cyclictest0-21swapper/1220:49:134
19119991360,79cyclictest0-21swapper/1223:11:114
19119991360,79cyclictest0-21swapper/1200:25:264
192449913551,65cyclictest0-21swapper/2919:22:5322
192449913551,65cyclictest0-21swapper/2919:22:5222
192449913548,67cyclictest0-21swapper/2923:59:1022
192449913547,66cyclictest0-21swapper/2919:44:1922
192449913547,66cyclictest0-21swapper/2919:44:1922
19180991359,119cyclictest151rcu_preempt22:36:3713
191809913510,121cyclictest0-21swapper/2000:20:1313
19180991350,88cyclictest0-21swapper/2000:16:0513
191769913512,78cyclictest0-21swapper/1923:17:5211
191519913521,106cyclictest0-21swapper/1623:27:468
191199913528,69cyclictest0-21swapper/1223:53:384
191199913527,67cyclictest0-21swapper/1221:50:014
19119991350,85cyclictest0-21swapper/1221:45:134
19119991350,82cyclictest0-21swapper/1222:50:254
192449913432,78cyclictest0-21swapper/2900:15:4622
192449913429,66cyclictest0-21swapper/2920:51:3522
192449913427,71cyclictest0-21swapper/2921:45:0222
192449913424,65cyclictest0-21swapper/2922:13:5422
191769913427,70cyclictest0-21swapper/1921:48:0411
191199913429,72cyclictest0-21swapper/1200:30:474
191199913428,65cyclictest0-21swapper/1221:19:574
191199913427,71cyclictest0-21swapper/1222:31:514
191199913427,67cyclictest0-21swapper/1223:23:394
19119991340,80cyclictest0-21swapper/1222:35:204
192449913359,64cyclictest0-21swapper/2920:09:2322
192449913359,64cyclictest0-21swapper/2920:09:2322
192449913333,63cyclictest0-21swapper/2923:26:5422
192449913332,63cyclictest0-21swapper/2900:38:1322
192449913331,76cyclictest0-21swapper/2900:05:2322
192449913330,70cyclictest0-21swapper/2923:44:1422
192449913329,68cyclictest0-21swapper/2923:17:3022
192449913328,70cyclictest0-21swapper/2900:31:4822
192449913328,68cyclictest0-21swapper/2922:20:1922
192449913328,68cyclictest0-21swapper/2921:43:5822
192449913328,68cyclictest0-21swapper/2921:39:5822
192449913327,68cyclictest0-21swapper/2900:02:5622
192449913327,66cyclictest0-21swapper/2923:49:0222
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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