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2022-08-19 - 12:33

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 100, highest latencies:
System rackdslot3.osadl.org (updated Fri Aug 19, 2022 00:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1772521550,6sleep10-21swapper/119:05:231
1772521550,6sleep10-21swapper/119:05:221
2119421520,7sleep01913699cyclictest20:20:310
825991145123,9phc2sys0-21swapper/319:06:253
825991145123,9phc2sys0-21swapper/319:06:253
1851229068,10sleep20-21swapper/219:05:412
1851229068,10sleep20-21swapper/219:05:412
825591890,13ptp4l401ktimersoftd/322:30:273
185052845,19sleep00-21swapper/019:05:360
185052845,19sleep00-21swapper/019:05:350
19136997033,6cyclictest9-21ksoftirqd/022:05:260
19136996731,4cyclictest9-21ksoftirqd/023:20:230
229592660,2sleep30-21swapper/323:50:283
19136996634,7cyclictest9-21ksoftirqd/021:05:000
1913699655,6cyclictest3499-21awk00:19:590
1913699647,9cyclictest13707-21apt22:25:010
19136996332,7cyclictest9-21ksoftirqd/023:35:010
19136996328,6cyclictest9-21ksoftirqd/019:41:550
19136996328,4cyclictest9-21ksoftirqd/000:21:070
19136996327,4cyclictest9-21ksoftirqd/023:11:070
19136996325,7cyclictest9-21ksoftirqd/021:45:300
1913699626,8cyclictest9-21ksoftirqd/021:15:190
1913699626,10cyclictest9-21ksoftirqd/022:40:000
1913699624,5cyclictest9-21ksoftirqd/021:10:010
19136996227,4cyclictest9-21ksoftirqd/023:04:520
38512610,3sleep20-21swapper/223:10:242
1913699617,4cyclictest14414-21apt-get23:35:000
1913699614,8cyclictest9-21ksoftirqd/022:45:170
19136996131,7cyclictest9-21ksoftirqd/000:30:190
19136996126,6cyclictest9-21ksoftirqd/020:29:330
19136996047,3cyclictest9-21ksoftirqd/023:05:180
1913699603,9cyclictest9-21ksoftirqd/022:55:000
19136996025,6cyclictest9-21ksoftirqd/022:30:180
19136995928,7cyclictest9-21ksoftirqd/021:55:120
1913699587,7cyclictest9-21ksoftirqd/021:10:280
1913699586,5cyclictest9-21ksoftirqd/021:35:170
1913699584,7cyclictest9-21ksoftirqd/021:50:310
1913699584,7cyclictest9-21ksoftirqd/000:35:320
1913699584,7cyclictest9-21ksoftirqd/000:00:000
19136995845,4cyclictest9-21ksoftirqd/021:25:130
1913699575,5cyclictest9-21ksoftirqd/023:15:260
1913699575,5cyclictest31657-21cut00:10:160
1913699574,8cyclictest9-21ksoftirqd/020:35:000
1913699574,8cyclictest9-21ksoftirqd/020:35:000
1913699573,7cyclictest9-21ksoftirqd/020:00:170
1913699573,6cyclictest9-21ksoftirqd/021:44:590
1913699573,5cyclictest9-21ksoftirqd/019:10:250
1913699573,5cyclictest9-21ksoftirqd/019:10:250
1913699573,10cyclictest9-21ksoftirqd/020:50:210
1913699566,6cyclictest9-21ksoftirqd/022:15:000
1913699564,7cyclictest121rcu_preempt23:50:240
1913699563,7cyclictest9-21ksoftirqd/019:20:310
1913699563,6cyclictest9-21ksoftirqd/022:40:310
1913699556,7cyclictest9-21ksoftirqd/023:25:190
1913699556,7cyclictest9-21ksoftirqd/023:25:180
1913699556,7cyclictest9-21ksoftirqd/020:05:210
19136995549,3cyclictest9-21ksoftirqd/020:55:050
1913699554,8cyclictest9-21ksoftirqd/021:30:240
1913699554,6cyclictest30019-21cron22:59:590
1913699552,7cyclictest9-21ksoftirqd/019:35:000
1913699552,5cyclictest9-21ksoftirqd/019:35:270
1913699549,6cyclictest9-21ksoftirqd/023:50:010
1913699547,8cyclictest9-21ksoftirqd/023:40:220
1913699547,7cyclictest9-21ksoftirqd/020:40:290
1913699546,10cyclictest9-21ksoftirqd/022:00:200
1913699546,10cyclictest9-21ksoftirqd/022:00:200
1913699545,8cyclictest27102-21fschecks_time00:00:190
1913699545,7cyclictest9-21ksoftirqd/021:25:000
1913699542,9cyclictest9-21ksoftirqd/019:45:180
1913699542,8cyclictest9-21ksoftirqd/022:20:010
1913699542,7cyclictest9-21ksoftirqd/019:55:230
1913699537,7cyclictest9-21ksoftirqd/020:10:240
1913699535,7cyclictest9-21ksoftirqd/022:25:170
1913699533,8cyclictest9-21ksoftirqd/020:15:350
1913699532,7cyclictest9-21ksoftirqd/000:05:210
1913699526,7cyclictest9-21ksoftirqd/019:25:210
1913699522,4cyclictest9-21ksoftirqd/020:45:200
1913699521,7cyclictest9-21ksoftirqd/019:15:120
1913699521,6cyclictest9-21ksoftirqd/020:35:140
1913699517,9cyclictest9-21ksoftirqd/019:50:180
1913699504,6cyclictest9-21ksoftirqd/000:25:280
19137994942,4cyclictest25-21ksoftirqd/122:55:001
19139994728,16cyclictest41-21ksoftirqd/323:26:363
19139994728,16cyclictest41-21ksoftirqd/323:26:363
825591460,1ptp4l401ktimersoftd/322:09:343
19139994625,5cyclictest41-21ksoftirqd/322:20:533
825591450,7ptp4l1913999cyclictest21:25:503
825591450,7ptp4l1913999cyclictest21:13:373
825591450,2ptp4l26885-21runrttasks20:34:583
825591450,2ptp4l26885-21runrttasks20:34:583
825591450,1ptp4l401ktimersoftd/320:53:383
825591440,7ptp4l1913999cyclictest21:21:253
825591440,1ptp4l401ktimersoftd/321:50:193
1913799443,7cyclictest0-21swapper/120:55:141
825591430,7ptp4l1913999cyclictest20:16:073
825591430,1ptp4l401ktimersoftd/322:56:213
825591430,14ptp4l0-21swapper/319:10:273
825591430,14ptp4l0-21swapper/319:10:273
19138994330,10cyclictest33-21ksoftirqd/221:41:022
19137994327,13cyclictest25-21ksoftirqd/121:38:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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