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2021-01-27 - 07:41

Intel(R) Atom(TM) CPU E3845 @ 1.91GHz, Linux 4.19.37-rt20 (Profile)

Latency plot of system in rack #b, slot #6
Data to construct the above plot have been generated using the RT test utility cyclictest.
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 rackbslot6.osadl.org (updated Wed Jan 27, 2021 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
87391920,4ptp4l401ktimersoftd/319:24:563
324192700,4sleep12083899cyclictest22:21:531
39042670,2sleep00-21swapper/022:25:570
215622650,2sleep10-21swapper/122:10:521
18972610,4sleep3401ktimersoftd/323:32:503
87391590,1ptp4l401ktimersoftd/323:39:243
87391590,1ptp4l401ktimersoftd/320:21:043
65152590,1sleep20-21swapper/223:37:232
20840995949,5cyclictest41-21ksoftirqd/321:40:413
87391580,1ptp4l401ktimersoftd/300:51:593
87391580,1ptp4l401ktimersoftd/300:46:243
87391580,1ptp4l401ktimersoftd/300:46:243
245432580,2sleep10-21swapper/100:31:021
87391570,1ptp4l401ktimersoftd/322:48:413
30372560,3sleep02083799cyclictest21:05:230
20840995647,4cyclictest41-21ksoftirqd/323:15:463
204942544,10sleep10-21swapper/119:24:061
203932544,38sleep00-21swapper/019:22:480
312462530,1sleep20-21swapper/222:20:532
55892510,1sleep10-21swapper/121:52:251
87391480,0ptp4l401ktimersoftd/322:32:393
87391470,2ptp4l8663-21kworker/3:123:43:363
20840994539,3cyclictest41-21ksoftirqd/323:55:433
20840994539,3cyclictest41-21ksoftirqd/321:30:393
20840994437,4cyclictest41-21ksoftirqd/320:45:393
87391430,0ptp4l401ktimersoftd/320:07:573
20840994337,3cyclictest41-21ksoftirqd/300:35:443
20840994236,3cyclictest41-21ksoftirqd/320:10:373
20840994235,4cyclictest41-21ksoftirqd/319:35:373
87391410,2ptp4l15600-21kworker/3:200:34:043
20840994033,4cyclictest41-21ksoftirqd/320:25:383
20840994033,4cyclictest41-21ksoftirqd/319:50:403
87391390,1ptp4l401ktimersoftd/323:47:263
87391390,1ptp4l401ktimersoftd/323:30:073
87391390,1ptp4l401ktimersoftd/323:00:553
87391390,1ptp4l401ktimersoftd/321:56:303
87391390,1ptp4l401ktimersoftd/321:26:043
87391390,1ptp4l401ktimersoftd/300:41:023
87391390,1ptp4l401ktimersoftd/300:41:023
20840993933,3cyclictest41-21ksoftirqd/320:15:243
2083899393,7cyclictest18411-21apt-get23:50:451
87391380,1ptp4l401ktimersoftd/323:24:103
87391380,1ptp4l401ktimersoftd/322:58:263
87391380,1ptp4l401ktimersoftd/322:27:383
87391380,1ptp4l401ktimersoftd/319:45:443
87391380,1ptp4l401ktimersoftd/300:13:483
20840993826,9cyclictest41-21ksoftirqd/323:51:053
20840993826,9cyclictest41-21ksoftirqd/322:51:043
20840993826,9cyclictest41-21ksoftirqd/322:51:043
87391370,1ptp4l401ktimersoftd/323:11:113
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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