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2025-11-03 - 10:49
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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 Mon Nov 03, 2025 00:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17787521420,138pltrace0-21swapper/619:09:226
14998521220,117pltrace0-21swapper/519:07:525
14998521070,104pltrace0-21swapper/319:05:233
14998521050,97pltrace0-21swapper/219:07:042
14998521030,97pltrace0-21swapper/719:05:147
14998521010,97pltrace0-21swapper/119:07:571
3096352940,1pltrace30964-21sed20:29:013
1775026340,18sleep40-21swapper/419:08:474
1763425945,10sleep00-21swapper/019:07:060
1812352310,7pltrace0-21swapper/721:05:217
1806999250,18cyclictest0-21swapper/321:02:373
1805899240,16cyclictest0-21swapper/021:46:570
1805899230,16cyclictest0-21swapper/021:42:060
1805899230,16cyclictest0-21swapper/021:42:060
581152190,0pltrace0-21swapper/700:35:587
2538452190,16pltrace54-21ksoftirqd/420:21:304
18069991913,3cyclictest0-21swapper/323:45:583
1806999190,14cyclictest0-21swapper/300:26:143
18066991916,2cyclictest29110-21smart_sda00:15:262
18066991916,2cyclictest1132-21snmpd23:51:232
2147352180,4pltrace0-21swapper/700:05:187
2035352180,0pltrace0-21swapper/723:06:267
1806999180,3cyclictest0-21swapper/322:42:353
18066991815,2cyclictest1166-21runrttasks00:06:342
18062991812,5cyclictest0-21swapper/122:22:121
1700352180,2pltrace0-21swapper/720:05:237
916752170,0pltrace0-21swapper/722:45:147
3263252170,0pltrace0-21swapper/700:26:307
302252170,0pltrace0-21swapper/700:33:377
302252170,0pltrace0-21swapper/700:33:377
2593352170,12pltrace0-21swapper/123:17:281
2372152170,0pltrace0-21swapper/721:15:237
18086991711,5cyclictest0-21swapper/720:18:427
18069991711,5cyclictest1700-21lldpd00:31:383
18069991711,5cyclictest1700-21lldpd00:31:383
18069991711,5cyclictest0-21swapper/321:56:143
18066991714,2cyclictest1132-21snmpd23:27:122
18066991714,2cyclictest1132-21snmpd20:35:172
1778752170,3pltrace0-21swapper/719:10:147
1195352170,7pltrace78-21ksoftirqd/722:50:147
3264552160,2pltrace0-21swapper/119:34:131
248352160,0pltrace0-21swapper/721:37:417
248352160,0pltrace0-21swapper/721:37:417
2482752160,0pltrace0-21swapper/722:18:087
18086991611,3cyclictest0-21swapper/719:30:377
1808699161,4cyclictest0-21swapper/723:27:597
1808699161,13cyclictest0-21swapper/720:03:357
1808699160,8cyclictest0-21swapper/720:38:187
1808399160,11cyclictest8006-21sshd21:43:316
1808399160,11cyclictest8006-21sshd21:43:316
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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