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2023-05-31 - 18:18

x86 Intel Atom x6425E @2000 MHz, Linux 5.15.49-rt47 (Profile)

Latency plot of system in rack #e, slot #3
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 rackeslot3 (updated Wed May 31, 2023 12:43:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
205534996662,2cyclictest0-21swapper/212:21:082
205534996562,2cyclictest0-21swapper/212:19:402
20553499640,2cyclictest0-21swapper/210:08:372
20553499640,1cyclictest0-21swapper/210:17:122
205534996245,16cyclictest236759-21kworker/2:108:45:212
205534996238,21cyclictest4065770-1kworker/2:0H07:34:592
205534996157,2cyclictest0-21swapper/209:14:372
205534996143,17cyclictest286336-21kworker/2:110:36:362
205534996141,18cyclictest331533-21kworker/2:011:10:312
20553499612,2cyclictest0-21swapper/210:28:032
205534996044,15cyclictest386671-21kworker/2:212:34:392
205534996044,15cyclictest341499-21kworker/2:111:30:022
205534996044,15cyclictest256794-21kworker/2:209:25:302
205534996044,15cyclictest234327-21kworker/2:008:35:192
205534996042,17cyclictest341499-21kworker/2:111:40:012
205534996042,16cyclictest4065770-1kworker/2:0H09:35:252
205534996041,18cyclictest244665-21kworker/2:009:15:262
205534996040,18cyclictest331533-21kworker/2:011:15:012
20553499600,57cyclictest0-21swapper/209:56:012
205534995943,15cyclictest4065770-1kworker/2:0H11:45:302
205534995943,15cyclictest365171-21kworker/2:212:05:062
205534995943,15cyclictest341499-21kworker/2:111:50:212
205534995943,15cyclictest282010-21kworker/2:210:00:212
205534995943,15cyclictest268997-21kworker/2:109:44:082
205534995943,15cyclictest236759-21kworker/2:108:55:012
205534995943,15cyclictest230802-21kworker/2:208:28:372
205534995943,15cyclictest222480-21kworker/2:108:00:542
205534995943,15cyclictest214537-21kworker/2:007:40:072
205534995943,15cyclictest207374-21kworker/2:107:20:012
205534995942,16cyclictest327045-21kworker/2:111:04:562
205534995941,17cyclictest341499-21kworker/2:111:35:092
205534995940,17cyclictest214537-21kworker/2:007:50:172
205534995939,18cyclictest224925-21kworker/2:208:10:192
205534995938,19cyclictest4065770-1kworker/2:0H07:30:002
205534995851,2cyclictest0-21swapper/208:43:552
205534995842,15cyclictest386671-21kworker/2:212:25:012
205534995842,15cyclictest309460-21kworker/2:210:50:222
205534995842,15cyclictest309460-21kworker/2:210:40:312
205534995842,15cyclictest309460-21kworker/2:210:40:302
205534995842,15cyclictest268997-21kworker/2:109:50:082
205534995842,15cyclictest256794-21kworker/2:209:30:012
205534995842,15cyclictest236759-21kworker/2:108:50:182
205534995842,15cyclictest230802-21kworker/2:208:30:232
205534995842,15cyclictest227535-21kworker/2:008:20:002
205534995842,15cyclictest214537-21kworker/2:007:55:182
205534995842,15cyclictest214537-21kworker/2:007:45:232
205534995842,15cyclictest205356-21kworker/2:207:10:222
205534995841,16cyclictest4065770-1kworker/2:0H12:38:012
205534995841,16cyclictest378874-21kworker/2:012:14:312
205534995841,16cyclictest286336-21kworker/2:110:20:082
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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