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2026-08-02 - 11:05
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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 Sun Aug 02, 2026 00:49:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
487999309112,28cyclictest151rcu_preempt22:25:2213
487999309112,28cyclictest151rcu_preempt22:25:2213
3273912990,291ptp4l0-21swapper/119:09:481
49559922326,3cyclictest151rcu_preempt22:21:1224
48149919838,105cyclictest151rcu_preempt00:31:104
330891194184,7phc2sys0-21swapper/219:05:1912
48309917623,96cyclictest151rcu_preempt21:05:026
20382169160,7sleep300-21swapper/3019:05:2124
49339915722,48cyclictest151rcu_preempt22:20:3720
48309915631,74cyclictest151rcu_preempt00:09:086
48309915631,74cyclictest151rcu_preempt00:09:076
48309915232,115cyclictest151rcu_preempt00:35:056
47199914616,37cyclictest22288-21taskset22:53:330
4933991440,87cyclictest0-21swapper/2722:00:2120
4830991440,80cyclictest0-21swapper/1421:56:536
49109914349,58cyclictest0-21swapper/2422:58:5117
49109914349,58cyclictest0-21swapper/2422:58:5117
4719991430,86cyclictest0-21swapper/023:53:450
4719991430,86cyclictest0-21swapper/023:53:450
49339914230,94cyclictest0-21swapper/2722:16:5220
49109914232,58cyclictest0-21swapper/2421:47:1117
48149914239,102cyclictest0-21swapper/1221:35:164
49109914145,59cyclictest0-21swapper/2421:20:3217
49109914048,56cyclictest0-21swapper/2419:12:1517
4919991390,85cyclictest0-21swapper/2522:58:0018
4919991390,85cyclictest0-21swapper/2522:58:0018
49109913946,58cyclictest0-21swapper/2421:18:5417
49109913930,63cyclictest0-21swapper/2419:35:0117
48709913949,54cyclictest0-21swapper/1922:03:2211
48149913936,98cyclictest0-21swapper/1221:44:214
47199913824,24cyclictest0-21swapper/000:00:270
47199913824,24cyclictest0-21swapper/000:00:270
49109913752,61cyclictest0-21swapper/2422:47:3717
48709913759,65cyclictest0-21swapper/1900:13:4711
49339913516,115cyclictest151rcu_preempt22:11:3120
4919991351,80cyclictest0-21swapper/2521:53:5118
49109913536,65cyclictest0-21swapper/2423:25:0217
49109913536,65cyclictest0-21swapper/2423:25:0217
49109913530,69cyclictest0-21swapper/2423:36:4817
49109913530,69cyclictest0-21swapper/2423:36:4817
4757991350,81cyclictest0-21swapper/523:11:0127
4757991350,81cyclictest0-21swapper/523:11:0127
49109913433,73cyclictest0-21swapper/2400:29:3917
49109913433,73cyclictest0-21swapper/2400:29:3917
49109913429,76cyclictest0-21swapper/2423:53:2417
49109913429,76cyclictest0-21swapper/2423:53:2317
49109913428,71cyclictest0-21swapper/2423:40:1617
49109913428,71cyclictest0-21swapper/2423:40:1617
49109913428,66cyclictest0-21swapper/2421:03:2117
49109913428,65cyclictest0-21swapper/2422:39:5217
4902991340,73cyclictest0-21swapper/2322:40:1816
48709913430,67cyclictest0-21swapper/1920:30:2311
4757991340,86cyclictest0-21swapper/519:15:2227
49109913329,70cyclictest0-21swapper/2422:20:2217
49109913329,67cyclictest0-21swapper/2422:08:0417
49109913329,67cyclictest0-21swapper/2400:00:1917
49109913329,67cyclictest0-21swapper/2400:00:1917
49109913327,71cyclictest0-21swapper/2423:49:1917
49109913327,71cyclictest0-21swapper/2423:49:1917
49109913326,72cyclictest0-21swapper/2423:10:3617
49109913326,72cyclictest0-21swapper/2423:10:3617
48309913345,87cyclictest0-21swapper/1422:47:396
48309913329,83cyclictest0-21swapper/1423:46:276
48309913329,83cyclictest0-21swapper/1423:46:266
47199913348,56cyclictest0-21swapper/019:53:000
47199913324,19cyclictest0-21swapper/023:01:060
49109913252,66cyclictest0-21swapper/2423:05:1417
49109913228,72cyclictest0-21swapper/2419:41:0617
49109913225,67cyclictest0-21swapper/2422:50:3417
48709913227,61cyclictest0-21swapper/1922:50:2411
4757991320,85cyclictest0-21swapper/523:43:4827
4757991320,85cyclictest0-21swapper/523:43:4827
4757991320,83cyclictest0-21swapper/522:47:3027
49249913126,58cyclictest0-21swapper/2623:27:2419
49249913126,58cyclictest0-21swapper/2623:27:2419
49109913160,70cyclictest0-21swapper/2422:03:1917
49109913130,74cyclictest0-21swapper/2420:30:1817
49109913130,72cyclictest0-21swapper/2400:20:1917
49109913130,72cyclictest0-21swapper/2400:20:1917
49109913127,68cyclictest0-21swapper/2419:35:0217
49109913127,66cyclictest0-21swapper/2423:30:2417
49109913127,66cyclictest0-21swapper/2423:30:2417
48709913148,53cyclictest0-21swapper/1923:39:0311
48709913148,53cyclictest0-21swapper/1923:39:0311
48309913125,83cyclictest0-21swapper/1423:23:286
48309913125,83cyclictest0-21swapper/1423:23:286
4830991310,84cyclictest0-21swapper/1423:26:086
4830991310,84cyclictest0-21swapper/1423:26:086
48149913130,48cyclictest0-21swapper/1221:10:234
49109913033,76cyclictest0-21swapper/2422:12:0317
49109913032,72cyclictest0-21swapper/2400:12:5017
49109913030,64cyclictest0-21swapper/2423:15:2917
49109913030,64cyclictest0-21swapper/2423:15:2917
49109913028,70cyclictest0-21swapper/2422:41:1217
49109913028,70cyclictest0-21swapper/2421:28:0217
49109913028,68cyclictest0-21swapper/2419:49:1117
49109913019,62cyclictest0-21swapper/2400:37:2117
48709913031,58cyclictest0-21swapper/1923:26:4511
48709913031,58cyclictest0-21swapper/1923:26:4511
48149913028,69cyclictest0-21swapper/1223:22:444
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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