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2026-05-21 - 19:34
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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 Thu May 21, 2026 12:49:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3273912930,284ptp4l0-21swapper/107:07:521
3273912930,284ptp4l0-21swapper/107:07:511
226259924851,22cyclictest151rcu_preempt10:16:0712
227229923183,1cyclictest151rcu_preempt12:07:3916
227229923183,1cyclictest151rcu_preempt12:07:3816
227419915018,76cyclictest0-21swapper/2611:17:5919
227039914828,79cyclictest0-21swapper/1909:29:5411
227039914728,90cyclictest0-21swapper/1911:06:0611
227039914626,75cyclictest0-21swapper/1910:40:5911
227039914423,121cyclictest0-21swapper/1910:00:2211
227039914227,115cyclictest0-21swapper/1907:30:1311
22650991410,82cyclictest0-21swapper/612:05:1328
22650991410,82cyclictest0-21swapper/612:05:1328
2275599140103,37cyclictest12429-21cpuspeed11:00:1121
22650991400,79cyclictest0-21swapper/608:20:1328
22650991380,81cyclictest0-21swapper/611:28:2128
22650991380,81cyclictest0-21swapper/611:28:2028
227039913416,87cyclictest0-21swapper/1911:46:4311
227039913416,87cyclictest0-21swapper/1911:46:4211
22650991320,78cyclictest0-21swapper/611:20:2028
2273699130128,1cyclictest151rcu_preempt09:53:3218
22691991290,86cyclictest0-21swapper/1608:17:108
22749991280,88cyclictest0-21swapper/2710:48:0420
226509912844,51cyclictest0-21swapper/610:45:3428
226789912727,61cyclictest0-21swapper/1309:33:015
22698991260,85cyclictest125-21ksoftirqd/1807:10:1110
226509912644,53cyclictest0-21swapper/610:03:2228
226509912643,54cyclictest0-21swapper/612:01:2928
226509912643,54cyclictest0-21swapper/612:01:2828
227499912480,41cyclictest0-21swapper/2708:55:1820
22683991240,31cyclictest0-21swapper/1410:30:426
181462124116,6sleep120-21swapper/1207:05:164
181462124116,6sleep120-21swapper/1207:05:154
22736991230,77cyclictest0-21swapper/2511:50:2418
22736991230,77cyclictest0-21swapper/2511:50:2318
226509912323,59cyclictest0-21swapper/611:01:0528
227499912246,59cyclictest22610-21cyclictest09:21:2920
226509912240,50cyclictest0-21swapper/612:39:2428
226509912240,50cyclictest0-21swapper/612:39:2328
226509912239,53cyclictest0-21swapper/610:37:0128
227499912128,67cyclictest0-21swapper/2710:55:3320
22698991212,74cyclictest0-21swapper/1811:39:4610
226509912140,50cyclictest0-21swapper/608:40:3228
226509912131,60cyclictest0-21swapper/610:11:4428
226919912035,84cyclictest0-21swapper/1611:56:098
226919912035,84cyclictest0-21swapper/1611:56:088
226509912023,57cyclictest0-21swapper/610:32:1328
226509911946,52cyclictest0-21swapper/611:14:3728
226509911934,56cyclictest0-21swapper/611:32:3728
226509911925,60cyclictest0-21swapper/610:55:4528
226509911924,62cyclictest0-21swapper/607:51:2228
22749991187,66cyclictest0-21swapper/2712:26:2520
22749991187,66cyclictest0-21swapper/2712:26:2420
227499911825,62cyclictest0-21swapper/2709:28:5920
227369911850,67cyclictest0-21swapper/2509:45:3118
227039911822,65cyclictest0-21swapper/1909:52:1911
226509911825,62cyclictest0-21swapper/612:13:3028
226509911825,62cyclictest0-21swapper/612:13:2928
226509911825,61cyclictest0-21swapper/612:15:0628
226509911825,61cyclictest0-21swapper/612:15:0528
226509911824,64cyclictest0-21swapper/611:56:4128
226509911824,64cyclictest0-21swapper/611:56:4028
226509911824,63cyclictest0-21swapper/607:35:2028
226509911824,62cyclictest0-21swapper/611:44:2228
226509911824,61cyclictest0-21swapper/611:05:5428
227499911741,53cyclictest0-21swapper/2709:36:2820
227499911726,66cyclictest0-21swapper/2711:59:1020
227499911726,66cyclictest0-21swapper/2711:59:1020
227499911724,61cyclictest0-21swapper/2709:11:0120
227499911724,61cyclictest0-21swapper/2707:30:2020
227499911723,62cyclictest0-21swapper/2710:38:5920
227499911723,56cyclictest0-21swapper/2711:38:5020
227369911756,60cyclictest0-21swapper/2509:32:0918
226919911730,57cyclictest0-21swapper/1612:33:298
226919911730,57cyclictest0-21swapper/1612:33:288
226509911727,68cyclictest0-21swapper/610:28:1228
226509911727,57cyclictest0-21swapper/609:22:4428
226509911726,61cyclictest0-21swapper/608:00:1328
226509911725,60cyclictest0-21swapper/610:17:4728
226509911723,60cyclictest0-21swapper/607:10:1428
22650991170,68cyclictest0-21swapper/611:50:1628
22650991170,68cyclictest0-21swapper/611:50:1628
22755991169,65cyclictest0-21swapper/2809:13:1821
227499911633,61cyclictest0-21swapper/2709:50:2020
227499911633,39cyclictest0-21swapper/2707:20:1120
227499911625,61cyclictest0-21swapper/2712:39:4720
227499911625,61cyclictest0-21swapper/2712:39:4620
227499911624,59cyclictest0-21swapper/2710:05:1720
227499911624,57cyclictest0-21swapper/2710:55:0120
227499911622,56cyclictest0-21swapper/2710:30:5820
227039911627,52cyclictest0-21swapper/1909:43:1511
226989911612,102cyclictest151rcu_preempt09:21:5210
226919911632,83cyclictest0-21swapper/1609:30:138
226919911632,72cyclictest0-21swapper/1611:20:178
226919911631,62cyclictest0-21swapper/1611:00:138
226509911625,66cyclictest0-21swapper/609:48:0228
226509911625,58cyclictest0-21swapper/609:31:3228
226509911624,67cyclictest0-21swapper/609:13:3928
226509911624,62cyclictest0-21swapper/609:55:3128
226509911624,58cyclictest0-21swapper/612:23:5528
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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