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2025-10-19 - 23:43
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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 50 highest latencies:
System rackcslot8.osadl.org (updated Sun Oct 19, 2025 12:49:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1045399347151,1cyclictest151rcu_preempt09:38:0029
1054099312134,2cyclictest151rcu_preempt09:59:5513
2482912510,243ptp4l0-21swapper/107:08:561
2482912510,243ptp4l0-21swapper/107:08:561
44832200192,7sleep170-21swapper/1707:05:059
44832200192,7sleep170-21swapper/1707:05:049
104829917324,1cyclictest151rcu_preempt10:38:504
92582165161,2sleep240-21swapper/2407:10:0017
92582165161,2sleep240-21swapper/2407:10:0017
104669915357,89cyclictest0-21swapper/1010:57:072
104669915257,77cyclictest0-21swapper/1009:11:182
10604991478,138cyclictest0-21swapper/2910:47:3322
10604991458,116cyclictest0-21swapper/2911:26:1822
10604991458,10cyclictest0-21swapper/2911:08:0822
10604991457,137cyclictest0-21swapper/2910:35:3222
105969914514,128cyclictest151rcu_preempt11:44:4921
105969914514,128cyclictest151rcu_preempt11:44:4921
10604991447,102cyclictest0-21swapper/2909:34:3622
10611991430,86cyclictest0-21swapper/3007:22:0624
104539914310,84cyclictest0-21swapper/710:11:5329
104669914245,81cyclictest0-21swapper/1012:26:542
104669914245,81cyclictest0-21swapper/1012:26:542
10604991407,90cyclictest0-21swapper/2907:24:3322
10453991399,95cyclictest0-21swapper/710:46:2329
104169913952,59cyclictest0-21swapper/109:17:341
104169913822,71cyclictest0-21swapper/110:41:151
104169913754,55cyclictest0-21swapper/112:10:431
104169913754,55cyclictest0-21swapper/112:10:431
104169913740,65cyclictest0-21swapper/109:43:451
106119913621,74cyclictest0-21swapper/3010:39:4924
104169913648,61cyclictest0-21swapper/112:05:381
104169913648,61cyclictest0-21swapper/112:05:381
105969913524,83cyclictest0-21swapper/2811:25:4721
104169913558,65cyclictest0-21swapper/111:11:561
104169913546,59cyclictest0-21swapper/110:39:411
104169913529,68cyclictest0-21swapper/112:34:001
104169913529,68cyclictest0-21swapper/112:33:591
104169913446,53cyclictest0-21swapper/107:38:431
104169913442,64cyclictest0-21swapper/110:55:581
104169913429,73cyclictest0-21swapper/111:37:501
104169913429,73cyclictest0-21swapper/111:37:501
104169913428,71cyclictest0-21swapper/110:33:271
104169913427,69cyclictest0-21swapper/109:37:201
104169913426,66cyclictest0-21swapper/108:54:031
105969913345,54cyclictest0-21swapper/2810:13:3321
105969913320,82cyclictest0-21swapper/2809:48:4921
104169913347,58cyclictest0-21swapper/109:26:071
104169913344,59cyclictest0-21swapper/111:17:491
104169913344,59cyclictest0-21swapper/111:17:491
104169913341,58cyclictest0-21swapper/111:01:361
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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