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2023-01-29 - 16:43

x86 Intel Atom E3845 @1910 MHz, Linux 4.19.37-rt19 (Profile)

Latency plot of system in rack #d, 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 -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 rackdslot3.osadl.org (updated Sun Jan 29, 2023 12:46:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3157721800,8sleep11761199cyclictest09:55:231
401121570,8sleep01761099cyclictest07:45:310
170722142120,10sleep10-21swapper/107:06:491
825991138116,10phc2sys0-21swapper/307:07:543
1686521310,10sleep216870-21unixbench_multi07:05:312
1154921100,2sleep30-21swapper/309:10:313
17611999077,9cyclictest25-21ksoftirqd/112:00:161
1704428969,10sleep00-21swapper/007:06:280
825591770,8ptp4l401ktimersoftd/312:28:403
17613996650,8cyclictest41-21ksoftirqd/307:55:183
298802650,8sleep31761399cyclictest09:50:273
825591640,1ptp4l401ktimersoftd/309:35:253
825591600,1ptp4l401ktimersoftd/310:59:183
17613996045,8cyclictest41-21ksoftirqd/309:00:173
17611995644,6cyclictest25-21ksoftirqd/112:20:161
825591550,1ptp4l401ktimersoftd/310:38:523
17613995347,4cyclictest41-21ksoftirqd/307:35:003
825591510,1ptp4l401ktimersoftd/310:44:583
214692500,4sleep3401ktimersoftd/307:15:263
17610995029,18cyclictest9-21ksoftirqd/011:26:180
17610995028,18cyclictest9-21ksoftirqd/007:50:590
825591490,1ptp4l401ktimersoftd/308:45:513
17613994936,3cyclictest41-21ksoftirqd/311:20:003
17613994934,8cyclictest41-21ksoftirqd/308:50:173
17613994934,8cyclictest41-21ksoftirqd/308:50:163
17613994933,8cyclictest41-21ksoftirqd/311:00:173
17611994943,4cyclictest25-21ksoftirqd/108:40:001
17610994927,18cyclictest9-21ksoftirqd/008:34:580
17613994824,17cyclictest41-21ksoftirqd/311:26:443
17613994741,3cyclictest41-21ksoftirqd/311:50:003
17613994740,4cyclictest41-21ksoftirqd/307:40:003
17613994734,10cyclictest41-21ksoftirqd/307:50:013
17613994733,7cyclictest41-21ksoftirqd/310:45:163
17611994741,3cyclictest25-21ksoftirqd/109:05:001
17611994740,3cyclictest25-21ksoftirqd/111:40:011
17611994738,6cyclictest25-21ksoftirqd/110:10:001
17613994639,4cyclictest41-21ksoftirqd/310:10:003
17611994640,3cyclictest25-21ksoftirqd/110:40:011
17610994625,18cyclictest9-21ksoftirqd/007:58:430
17613994539,4cyclictest41-21ksoftirqd/307:15:013
17613994533,8cyclictest41-21ksoftirqd/310:00:163
17611994539,4cyclictest25-21ksoftirqd/108:00:001
17611994538,4cyclictest25-21ksoftirqd/111:45:001
825591440,1ptp4l401ktimersoftd/311:30:363
17613994438,4cyclictest41-21ksoftirqd/309:25:013
17613994431,7cyclictest41-21ksoftirqd/312:05:173
17611994438,4cyclictest25-21ksoftirqd/107:15:001
17611994438,3cyclictest25-21ksoftirqd/109:00:001
17611994437,4cyclictest25-21ksoftirqd/107:35:201
1761099442,33cyclictest2417-21apt-get12:20:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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