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2025-11-27 - 17:27
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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 rackbslot7.osadl.org (updated Thu Nov 27, 2025 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2908521249,89sleep00-21swapper/007:04:260
30405991203,70cyclictest20566-21taskset12:29:340
30424991188,64cyclictest355-21runrttasks10:35:032
304059911357,49cyclictest0-21swapper/009:59:350
30405991106,76cyclictest26770-21taskset11:44:290
30405991073,70cyclictest0-21swapper/009:47:120
304059910541,57cyclictest0-21swapper/010:09:240
30424991043,49cyclictest3316-21apt-get10:04:172
30405991034,88cyclictest0-21swapper/009:19:150
304059910323,50cyclictest0-21swapper/007:56:360
304059910323,50cyclictest0-21swapper/007:56:360
30405991028,80cyclictest0-21swapper/009:39:130
30405991024,64cyclictest14437-21ssh12:19:260
30405991022,64cyclictest355-21runrttasks12:02:030
30405991022,62cyclictest13409-21taskset10:23:050
304249910115,42cyclictest15244-21apt-get11:24:162
30405991013,73cyclictest355-21runrttasks11:53:150
30405991012,64cyclictest0-21swapper/010:24:240
30405991012,64cyclictest0-21swapper/010:24:240
2895021018,61sleep229029-21sshd07:04:242
30405991004,91cyclictest0-21swapper/010:54:170
304059910047,47cyclictest25174-21ssh10:44:210
30405991002,62cyclictest24800-21taskset08:29:190
3040599994,83cyclictest0-21swapper/011:29:170
30405999923,56cyclictest0-21swapper/012:27:010
3040599982,65cyclictest12742-21taskset07:49:550
3040599982,62cyclictest7943-21taskset07:38:420
3040599982,62cyclictest7943-21taskset07:38:420
30405999817,59cyclictest17312-21sh09:30:150
30405999817,59cyclictest17312-21sh09:30:150
3040599976,55cyclictest0-21swapper/009:34:330
3040599973,58cyclictest0-21swapper/012:13:470
3040599972,90cyclictest0-21swapper/012:14:130
30405999718,61cyclictest0-21swapper/011:01:470
30405999718,56cyclictest0-21swapper/009:06:140
3040599964,60cyclictest0-21swapper/010:31:080
3040599964,60cyclictest0-21swapper/010:31:080
3040599962,57cyclictest0-21swapper/010:07:360
3042499959,67cyclictest2247-21apt-get11:59:162
3040599956,56cyclictest0-21swapper/010:51:290
3040599956,56cyclictest0-21swapper/010:51:290
3040599954,79cyclictest0-21swapper/012:34:120
3040599953,78cyclictest0-21swapper/008:49:160
30405999536,52cyclictest8388-21latency09:14:270
30405999534,53cyclictest0-21swapper/009:54:290
30416999412,71cyclictest790-21apt-get10:59:181
30405999440,46cyclictest0-21swapper/011:14:190
3040599943,56cyclictest28434-21ntp_states08:39:320
3040599943,56cyclictest28434-21ntp_states08:39:320
3040599943,56cyclictest0-21swapper/011:13:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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