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2025-04-02 - 08:27
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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 rack4slot6.osadl.org (updated Wed Apr 02, 2025 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7174521200,57pltrace0-21swapper/719:05:147
9959521110,102pltrace0-21swapper/219:09:462
717452950,91pltrace0-21swapper/319:05:193
995952900,76pltrace0-21swapper/519:10:005
153152890,1pltrace0-21swapper/323:11:153
995952870,82pltrace0-21swapper/619:08:126
990827460,10sleep10-21swapper/119:05:471
996825945,10sleep00-21swapper/019:06:180
993825743,10sleep40-21swapper/419:06:134
1041699240,23cyclictest0-21swapper/500:29:205
2204052200,0pltrace0-21swapper/722:50:097
3115552190,2pltrace0-21swapper/723:10:187
3036752190,3pltrace0-21swapper/719:45:197
10393991914,2cyclictest0-21swapper/023:20:020
3036752180,3pltrace0-21swapper/719:42:007
1898452180,0pltrace0-21swapper/720:29:007
1801452180,2pltrace0-21swapper/721:30:207
837152170,4pltrace0-21swapper/700:37:407
3166852170,0pltrace0-21swapper/700:17:497
2989652170,0pltrace0-21swapper/721:54:307
2888452170,0pltrace0-21swapper/700:14:127
2479752170,0pltrace0-21swapper/719:31:187
1851452170,4pltrace54-21ksoftirqd/422:36:464
1801452170,4pltrace0-21swapper/721:27:327
1573052170,0pltrace0-21swapper/722:35:157
10425991712,4cyclictest0-21swapper/722:20:017
10395991711,4cyclictest0-21swapper/122:02:371
10395991711,4cyclictest0-21swapper/122:02:371
1039599170,15cyclictest25787-21expr22:55:121
1039399171,8cyclictest0-21swapper/022:19:160
10425991611,3cyclictest0-21swapper/722:40:417
10425991611,2cyclictest0-21swapper/719:37:417
1042599161,7cyclictest0-21swapper/723:18:357
1041699161,14cyclictest0-21swapper/519:33:525
1041699160,8cyclictest0-21swapper/521:58:215
1041699160,8cyclictest0-21swapper/520:20:125
1041699160,15cyclictest0-21swapper/523:14:155
1041399161,8cyclictest0-21swapper/423:38:164
1040899161,4cyclictest0-21swapper/322:19:183
1040899161,14cyclictest0-21swapper/322:26:153
1040899161,14cyclictest0-21swapper/321:40:053
1040899161,14cyclictest0-21swapper/320:06:053
1040899160,15cyclictest0-21swapper/300:02:503
1039599165,10cyclictest1132-21snmpd23:45:121
1039599163,12cyclictest0-21swapper/120:58:421
10395991611,3cyclictest0-21swapper/123:59:161
10395991611,3cyclictest0-21swapper/121:45:331
1039599161,7cyclictest0-21swapper/121:36:331
1039599161,14cyclictest0-21swapper/121:00:161
1039599160,15cyclictest0-21swapper/119:57:371
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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