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2026-07-02 - 09:44
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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 Jul 02, 2026 00:50:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2831899351153,1cyclictest151rcu_preempt23:50:2228
2831899351153,1cyclictest151rcu_preempt23:50:2228
2828399314116,2cyclictest151rcu_preempt21:32:400
259182185176,6sleep290-21swapper/2919:05:2322
259182185176,6sleep290-21swapper/2919:05:2322
330891184175,6phc2sys0-21swapper/219:05:1312
330891184175,6phc2sys0-21swapper/219:05:1212
3273911760,168ptp4l0-21swapper/119:06:281
3273911760,168ptp4l0-21swapper/119:06:281
284089915933,88cyclictest0-21swapper/2521:19:0818
284229914941,87cyclictest0-21swapper/2823:49:1121
28318991496,104cyclictest0-21swapper/621:27:2228
28318991485,131cyclictest0-21swapper/623:45:1628
28318991475,103cyclictest0-21swapper/622:45:3428
28422991461,85cyclictest0-21swapper/2819:34:4721
284009914647,68cyclictest0-21swapper/2422:17:4517
283259914616,75cyclictest0-21swapper/721:35:2529
28293991460,93cyclictest0-21swapper/223:45:1312
28431991450,91cyclictest0-21swapper/3021:36:1924
284009914514,118cyclictest161-21ksoftirqd/2421:57:5717
284319914355,66cyclictest0-21swapper/3023:42:5924
284319914355,66cyclictest0-21swapper/3023:42:5824
283419914322,54cyclictest0-21swapper/1000:04:022
283419914322,54cyclictest0-21swapper/1000:04:022
284229914234,72cyclictest0-21swapper/2823:35:1821
284229914234,72cyclictest0-21swapper/2823:35:1721
283259914213,128cyclictest0-21swapper/719:55:0629
284229914133,98cyclictest0-21swapper/2822:17:4621
284229914033,106cyclictest0-21swapper/2800:09:2721
284229914033,106cyclictest0-21swapper/2800:09:2721
283259914021,74cyclictest0-21swapper/719:28:1429
28426991390,87cyclictest0-21swapper/2923:53:4122
28426991390,87cyclictest0-21swapper/2923:53:4022
283419913973,46cyclictest0-21swapper/1022:20:222
283259913625,88cyclictest0-21swapper/719:30:2129
282939913658,67cyclictest0-21swapper/221:43:5212
284359913530,104cyclictest0-21swapper/3121:52:4025
284229913528,102cyclictest0-21swapper/2820:45:2421
28417991353,108cyclictest0-21swapper/2723:19:2320
28417991353,108cyclictest0-21swapper/2723:19:2320
28417991343,85cyclictest0-21swapper/2700:39:5120
28417991343,85cyclictest0-21swapper/2700:39:5020
283419913443,66cyclictest0-21swapper/1000:28:212
283419913443,66cyclictest0-21swapper/1000:28:202
284229913325,82cyclictest0-21swapper/2819:10:1321
284229913325,82cyclictest0-21swapper/2819:10:1321
283259913329,70cyclictest0-21swapper/723:27:4929
28318991325,95cyclictest0-21swapper/622:08:3028
28426991310,89cyclictest0-21swapper/2919:35:0022
283419913141,58cyclictest0-21swapper/1023:12:442
283419913129,70cyclictest0-21swapper/1022:05:232
283419913129,68cyclictest0-21swapper/1000:08:202
283419913129,68cyclictest0-21swapper/1000:08:202
283419913126,63cyclictest0-21swapper/1022:10:452
283259913137,63cyclictest0-21swapper/721:59:2829
284359913025,64cyclictest0-21swapper/3123:15:1425
284359913025,64cyclictest0-21swapper/3123:15:1325
283419913029,70cyclictest0-21swapper/1021:28:052
283419913028,69cyclictest0-21swapper/1023:52:012
283419913028,69cyclictest0-21swapper/1023:52:012
283419913027,71cyclictest0-21swapper/1023:30:232
28417991290,85cyclictest0-21swapper/2719:37:2720
283419912929,73cyclictest0-21swapper/1022:15:102
283419912928,69cyclictest0-21swapper/1023:05:472
283419912928,68cyclictest0-21swapper/1023:39:262
283419912928,68cyclictest0-21swapper/1023:39:262
283419912928,67cyclictest0-21swapper/1021:00:102
283059912927,70cyclictest0-21swapper/422:16:5026
283419912840,60cyclictest0-21swapper/1022:50:172
283419912828,72cyclictest0-21swapper/1021:19:572
283419912828,68cyclictest0-21swapper/1021:43:282
28431991270,85cyclictest0-21swapper/3022:03:0424
283419912746,47cyclictest0-21swapper/1019:16:322
283419912746,47cyclictest0-21swapper/1019:16:312
283419912727,66cyclictest0-21swapper/1021:46:482
283419912727,66cyclictest0-21swapper/1019:14:232
283419912727,66cyclictest0-21swapper/1019:14:232
28318991276,69cyclictest0-21swapper/621:42:1928
283419912631,75cyclictest0-21swapper/1021:35:282
283419912628,66cyclictest0-21swapper/1023:25:002
283419912628,66cyclictest0-21swapper/1023:25:002
283419912623,59cyclictest0-21swapper/1021:09:162
283259912645,64cyclictest0-21swapper/700:30:4429
283259912645,64cyclictest0-21swapper/700:30:4329
283059912668,50cyclictest40-21ksoftirqd/422:55:1726
283419912552,67cyclictest0-21swapper/1021:56:512
283419912531,79cyclictest0-21swapper/1023:25:022
283419912530,73cyclictest0-21swapper/1020:50:332
283419912529,75cyclictest0-21swapper/1022:45:022
283419912528,57cyclictest0-21swapper/1022:35:192
283419912527,55cyclictest0-21swapper/1022:28:542
283059912540,52cyclictest0-21swapper/422:06:4426
283419912428,60cyclictest0-21swapper/1000:37:442
283419912428,60cyclictest0-21swapper/1000:37:442
283419912427,64cyclictest0-21swapper/1020:45:142
283059912451,58cyclictest0-21swapper/422:10:1226
283059912441,63cyclictest0-21swapper/400:18:1126
283059912441,63cyclictest0-21swapper/400:18:1026
283059912440,56cyclictest0-21swapper/419:36:0026
283059912439,56cyclictest0-21swapper/421:25:1526
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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