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2023-01-28 - 11:08

x86 Intel Xeon i3-1578L v5 @2000 MHz, Linux 4.19.246-rt110 (Profile)

Latency plot of system in rack #5, 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 rack5slot3.osadl.org (updated Sat Jan 28, 2023 00:50:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24094994646,0cyclictest0-21swapper/020:55:170
24094994342,0cyclictest0-21swapper/021:40:120
2410199400,0cyclictest0-21swapper/719:25:147
24101993735,1cyclictest0-21swapper/721:40:127
24095993635,0cyclictest0-21swapper/120:10:161
24101993535,0cyclictest0-21swapper/720:40:167
2409899350,0cyclictest0-21swapper/421:05:234
24097993535,0cyclictest0-21swapper/320:20:183
24095993534,0cyclictest0-21swapper/120:25:111
24094993535,0cyclictest0-21swapper/019:10:120
24099993232,0cyclictest0-21swapper/521:05:235
24101993029,0cyclictest0-21swapper/719:10:127
24096993030,0cyclictest0-21swapper/220:00:182
2410199290,28cyclictest0-21swapper/723:50:267
24099992828,0cyclictest0-21swapper/519:45:185
24097992810,0cyclictest0-21swapper/319:33:093
24095992828,0cyclictest0-21swapper/120:15:181
24099992726,0cyclictest76350irq/125-eth022:15:255
24097992726,1cyclictest0-21swapper/323:29:383
24097992725,1cyclictest0-21swapper/320:10:163
2410099260,18cyclictest0-21swapper/620:15:236
24095992626,0cyclictest0-21swapper/120:50:251
24094992626,0cyclictest0-21swapper/019:30:170
24100992522,1cyclictest23743-21diskmemload21:40:076
24098992525,0cyclictest0-21swapper/422:55:174
24098992525,0cyclictest0-21swapper/419:35:114
24097992523,1cyclictest32619-21apt-get20:25:113
24100992423,1cyclictest0-21swapper/620:00:186
24099992424,0cyclictest0-21swapper/519:35:175
24098992424,0cyclictest0-21swapper/420:40:104
24096992423,0cyclictest0-21swapper/219:40:122
24101992310,6cyclictest0-21swapper/719:50:127
24099992310,5cyclictest0-21swapper/519:30:125
24098992310,5cyclictest0-21swapper/419:50:244
24096992319,4cyclictest1739-21sendmail-mta00:02:352
24095992323,0cyclictest0-21swapper/119:54:091
24094992323,0cyclictest0-21swapper/023:50:200
24098992222,0cyclictest0-21swapper/400:08:454
24098992210,5cyclictest0-21swapper/423:50:264
24098992210,4cyclictest0-21swapper/420:25:234
24095992222,0cyclictest0-21swapper/123:49:411
24095992210,4cyclictest0-21swapper/120:40:101
24095992210,0cyclictest0-21swapper/119:45:241
24101992110,9cyclictest24086-21cyclictest19:45:237
24100992121,0cyclictest0-21swapper/600:28:456
24099992121,0cyclictest0-21swapper/522:55:175
24096992119,1cyclictest694-21apt-get19:25:142
24101992020,0cyclictest0-21swapper/719:30:177
24101992011,3cyclictest21334-21grep20:00:237
24099992010,9cyclictest0-21swapper/519:10:125
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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