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2021-01-20 - 14:00

Intel(R) Atom(TM) CPU E3845 @ 1.91GHz, Linux 4.19.37-rt19 (Profile)

Latency plot of system in rack #d, 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 -Up99 -i200 -h400 --smi -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 50 highest latencies:
System rackdslot2.osadl.org (updated Fri Jan 15, 2021 00:46:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1268911830,6ptp4l401ktimersoftd/319:08:023
525921770,10sleep22540299cyclictest19:25:072
66821670,6sleep12540199cyclictest22:55:111
2028421590,9sleep22540299cyclictest20:30:142
555981320,104rtkit-daemon1314-21mactelnetd19:06:111
2483828665,10sleep20-21swapper/219:06:382
25400998168,7cyclictest9-21ksoftirqd/021:00:040
25402997971,4cyclictest33-21ksoftirqd/222:50:052
25402997265,4cyclictest33-21ksoftirqd/221:40:132
299602700,4sleep02540099cyclictest22:10:060
25402997062,5cyclictest33-21ksoftirqd/219:15:042
126891700,2ptp4l401ktimersoftd/321:45:053
322712690,2sleep30-21swapper/321:30:063
300172690,2sleep00-21swapper/021:25:130
130702690,2sleep10-21swapper/120:20:061
130702690,2sleep10-21swapper/120:20:051
25402996861,4cyclictest33-21ksoftirqd/220:35:042
25401996861,4cyclictest35092irq/88-enp1s0-T21:35:141
232822680,3sleep10-21swapper/122:45:001
25401996556,4cyclictest25-21ksoftirqd/122:00:051
205402640,4sleep020544-21unixbench_singl00:05:200
238162630,3sleep10-21swapper/122:45:041
312552610,2sleep30-21swapper/300:20:133
228472610,5sleep2210-21systemd-journal19:50:002
25402996053,5cyclictest33-21ksoftirqd/221:25:142
25402995852,4cyclictest33-21ksoftirqd/220:40:132
25402995851,4cyclictest33-21ksoftirqd/222:20:132
25402995851,4cyclictest33-21ksoftirqd/219:35:142
25402995849,4cyclictest33-21ksoftirqd/223:45:172
25401995850,4cyclictest25-21ksoftirqd/100:20:031
123191580,9getstats2540399cyclictest21:13:093
25402995750,4cyclictest33-21ksoftirqd/222:15:132
25402995649,4cyclictest33-21ksoftirqd/200:15:042
25402995550,3cyclictest33-21ksoftirqd/220:50:062
25402995546,4cyclictest33-21ksoftirqd/222:10:042
25402995541,11cyclictest33-21ksoftirqd/223:40:072
25400995535,6cyclictest9-21ksoftirqd/019:35:060
25403995447,4cyclictest41-21ksoftirqd/323:40:133
25402995448,3cyclictest33-21ksoftirqd/223:50:132
25402995446,4cyclictest33-21ksoftirqd/222:00:052
141692540,2sleep30-21swapper/320:20:123
141692540,2sleep30-21swapper/320:20:113
25402995347,3cyclictest33-21ksoftirqd/221:55:032
25402995347,3cyclictest33-21ksoftirqd/221:55:032
25402995345,5cyclictest33-21ksoftirqd/220:20:042
25402995345,5cyclictest33-21ksoftirqd/220:20:032
25401995335,4cyclictest25-21ksoftirqd/122:15:131
25402995245,4cyclictest33-21ksoftirqd/223:25:122
25402995243,4cyclictest33-21ksoftirqd/220:45:062
25401995245,4cyclictest25-21ksoftirqd/123:20:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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