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2022-01-26 - 11:59

Intel(R) Xeon(R) CPU E3-1220L V2 @ 2.30GHz, Linux 4.19.8-rt6 (Profile)

Latency plot of system in rack #4, slot #0
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
Characteristics of the 50 highest latencies:
System rack4slot0.osadl.org (updated Wed Jan 26, 2022 00:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1531321400,2sleep2466299cyclictest21:53:072
2061721120,1sleep1241ktimersoftd/122:13:551
1753421060,0sleep10-21swapper/122:03:321
1753421060,0sleep10-21swapper/122:03:321
117592840,1sleep0939-21rngd00:31:170
183532810,2sleep2466299cyclictest21:16:322
173212790,1sleep117313-21lspci23:17:351
248312770,1sleep225838-21nfsd00:32:402
119392770,1sleep211919-21rm22:19:442
214792760,1sleep121475-21lspci23:41:401
28462750,0sleep30-21swapper/323:05:583
163752740,1sleep00-21swapper/023:31:010
50772730,0sleep10-21swapper/122:49:261
216822730,1sleep221676-21lspci00:08:462
69552720,0sleep10-21swapper/123:03:041
60922720,1sleep06091-21id22:05:400
77742710,1sleep07778-21bash22:32:490
96732700,1sleep19670-21sshd21:29:051
84952700,0sleep00-21swapper/000:10:440
135072690,0sleep30-21swapper/322:06:273
126292680,0sleep00-21swapper/021:12:370
249132670,4sleep1466199cyclictest21:30:381
169332670,0sleep20-21swapper/223:24:212
94362640,3sleep3466399cyclictest21:18:573
47092640,0sleep10-21swapper/121:15:101
324852640,0sleep10-21swapper/122:52:151
86312610,0sleep10-21swapper/121:22:171
153432610,0sleep00-21swapper/023:24:120
246892600,1sleep025838-21nfsd22:00:520
246892600,1sleep025838-21nfsd22:00:510
138452590,1sleep10-21swapper/100:38:151
127552590,2sleep2466299cyclictest21:39:282
440625825,9sleep20-21swapper/219:08:512
310072570,1sleep331004-21lspci22:45:223
436525624,10sleep10-21swapper/119:08:261
449624630,10sleep00-21swapper/019:09:530
421724327,9sleep30-21swapper/319:07:363
106452300,1sleep010000-1kworker/0:2H00:04:160
80422280,0sleep00-21swapper/023:36:540
126532280,0sleep20-21swapper/200:24:412
222262260,1sleep322221-21sshd21:40:253
89302250,18sleep3102550irq/24-eno121:32:213
466399255,2cyclictest3083-21sshd21:38:283
230132250,1sleep2321ktimersoftd/222:00:412
230132250,1sleep2321ktimersoftd/222:00:412
126932250,0sleep10-21swapper/123:07:021
466199243,2cyclictest0-21swapper/121:40:201
466399231,2cyclictest2348-21sshd23:43:063
4661992312,10cyclictest9629-21dump-pmu-power22:59:591
466199230,4cyclictest0-21swapper/122:25:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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