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2022-06-29 - 14:56

x86 Intel Core i5-6440EQ @2700 MHz, Linux 4.9.47-rt37 (Profile)

Latency plot of system in rack #5, slot #2
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 rack5slot2.osadl.org (updated Wed Jun 29, 2022 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
204602236220,11sleep10-21swapper/107:08:211
204642202184,13sleep00-21swapper/007:08:240
205712195179,11sleep30-21swapper/307:09:473
205482172155,12sleep20-21swapper/207:09:302
323022480,0sleep10-21swapper/107:30:151
162792470,0sleep10-21swapper/110:27:021
321302460,0sleep10-21swapper/110:17:091
297542450,0sleep10-21swapper/110:55:121
52582140,0sleep30-21swapper/309:41:203
50762120,0sleep00-21swapper/010:00:260
207489991,4cyclictest9102-21munin-run09:25:010
207619971,5cyclictest0-21swapper/312:20:123
2402260,0sleep10-21swapper/107:35:141
207489960,6cyclictest0-21swapper/009:50:220
207489960,3cyclictest29579-21munin-run11:15:000
207489960,3cyclictest27440-21cron10:15:010
207489960,1cyclictest2898-21ssh11:56:480
29049250,0sleep10-21swapper/110:55:001
22031250,0sleep20-21swapper/207:10:172
207619955,0cyclictest29861-21kworker/3:111:50:503
207619955,0cyclictest0-21swapper/312:08:033
207619952,3cyclictest740-21snmpd08:03:163
207619951,2cyclictest0-21swapper/307:15:113
207619950,5cyclictest0-21swapper/312:35:233
207619950,5cyclictest0-21swapper/311:49:243
207619950,4cyclictest0-21swapper/311:55:113
207619950,4cyclictest0-21swapper/310:55:113
207619950,4cyclictest0-21swapper/309:10:133
207579951,2cyclictest0-21swapper/210:10:122
207579950,5cyclictest0-21swapper/212:10:122
207579950,5cyclictest0-21swapper/211:49:062
207579950,5cyclictest0-21swapper/211:33:142
207579950,5cyclictest0-21swapper/209:35:582
207579950,4cyclictest0-21swapper/211:35:012
207499951,2cyclictest0-21swapper/112:30:111
207499951,2cyclictest0-21swapper/111:45:161
207499950,5cyclictest0-21swapper/109:22:411
207489951,4cyclictest19125-21munin-run08:10:000
207489950,5cyclictest0-21swapper/011:21:360
207489950,5cyclictest0-21swapper/010:05:120
207489950,5cyclictest0-21swapper/010:05:120
207489950,5cyclictest0-21swapper/009:19:400
207489950,5cyclictest0-21swapper/007:45:130
207489950,1cyclictest5433-21munin-run11:20:000
1424250,4sleep30-21swapper/310:18:323
207619944,0cyclictest2523-21kworker/3:211:17:153
207619944,0cyclictest2523-21kworker/3:210:10:053
207619944,0cyclictest24072-21apt-get08:20:013
207619944,0cyclictest0-21swapper/311:07:473
207619944,0cyclictest0-21swapper/309:23:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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