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2025-11-27 - 17:10
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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 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
3040599943,56cyclictest0-21swapper/011:13:150
3040599942,80cyclictest1696-21/usr/sbin/munin11:59:020
3040599942,80cyclictest1696-21/usr/sbin/munin11:59:020
30405999424,40cyclictest0-21swapper/011:41:130
30405999418,46cyclictest0-21swapper/011:21:540
30405999416,62cyclictest15289-21ssh11:24:250
30424999374,13cyclictest22799-21/usr/sbin/munin12:34:212
3040599936,79cyclictest0-21swapper/007:39:260
3040599933,76cyclictest0-21swapper/009:24:150
3040599933,61cyclictest21452-21ssh10:36:520
30405999335,50cyclictest0-21swapper/007:19:300
30405999335,50cyclictest0-21swapper/007:19:300
3040599932,59cyclictest7581-21ssh09:13:490
3040599932,57cyclictest23742-21ssh10:40:190
3042499923,81cyclictest31796-21/usr/sbin/munin10:54:532
30405999238,47cyclictest0-21swapper/008:39:020
30405999238,47cyclictest0-21swapper/008:39:020
30405999218,42cyclictest0-21swapper/007:59:060
30405999211,48cyclictest355-21runrttasks10:14:380
3040599913,77cyclictest10104-21/usr/sbin/munin07:44:180
3040599912,59cyclictest4932-21diskmemload12:04:270
3040599902,74cyclictest0-21swapper/008:54:140
3040599893,75cyclictest3429-21apt-get07:24:110
3040599893,75cyclictest3429-21apt-get07:24:110
3040599893,58cyclictest21815-21grep11:34:400
3040599893,58cyclictest21815-21grep11:34:400
3040599893,57cyclictest19439-21taskset08:12:590
30405998932,50cyclictest0-21swapper/007:34:020
3040599892,54cyclictest29490-21/usr/sbin/munin08:44:290
2940328910,43sleep10-21swapper/107:04:401
30424998830,8cyclictest0-21swapper/211:44:172
3041699883,65cyclictest31826-21sed10:54:531
3040599883,58cyclictest17856-21runrttasks08:08:180
30424998752,13cyclictest181rcu_preempt09:50:472
30424998752,13cyclictest181rcu_preempt09:50:472
3040599872,54cyclictest1241-21taskset07:15:320
3040599872,54cyclictest1241-21taskset07:15:320
30424998662,16cyclictest13361-21unixbench_singl11:19:412
30424998650,8cyclictest181rcu_preempt08:12:372
30424998649,15cyclictest181rcu_preempt07:39:472
3040599862,76cyclictest1944-21/usr/sbin/munin08:59:390
3040599862,69cyclictest30589-21apt-get07:09:140
30405998623,53cyclictest0-21swapper/008:19:210
30405998622,58cyclictest4142-21rm11:04:190
30416998552,21cyclictest8790-21threads09:14:371
30405998516,42cyclictest27366-21/usr/sbin/munin09:49:280
30405998516,42cyclictest27366-21/usr/sbin/munin09:49:280
30424998463,15cyclictest18284-21sh09:33:272
30424998463,15cyclictest18284-21sh09:33:272
30424998436,13cyclictest181rcu_preempt09:14:282
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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