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2022-07-07 - 01:13

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #0, slot #8

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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x86 Intel Core i7-X990 @3470 MHz, Linux 5.10.47-rt46 (Profile)

Latency plot of shadow in rack #0, slot #8
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 --smi
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 100, Linux 4.9.20-rt16, x86_64 highest latencies:
System rack0slot8s.osadl.org (updated Wed Jul 06, 2022 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2998911120,5ptp4l21-21ksoftirqd/107:05:451
917801060,90rtkit-daemon0-21swapper/1107:06:553
2337827766,9sleep40-21swapper/407:07:516
2150027055,12sleep70-21swapper/707:05:169
2325026454,8sleep100-21swapper/1007:05:562
2024726251,9sleep00-21swapper/007:05:090
2024025948,9sleep60-21swapper/607:05:038
93052570,0sleep50-21swapper/511:00:147
2325825444,8sleep50-21swapper/507:06:027
167402470,0sleep90-21swapper/911:50:2411
230102460,0sleep00-21swapper/011:19:590
131922460,0sleep60-21swapper/611:05:178
23843993018,11cyclictest0-21swapper/607:59:568
23843993018,11cyclictest0-21swapper/607:59:558
2386199290,1cyclictest0-21swapper/1011:20:232
2386199230,1cyclictest0-21swapper/1010:45:162
2383299223,14cyclictest0-21swapper/412:40:006
2382399213,9cyclictest0-21swapper/208:35:004
2381899210,19cyclictest6595-21rdmsr10:55:241
2385799204,10cyclictest0-21swapper/909:05:0111
2385299200,1cyclictest0-21swapper/811:20:2210
2383299191,14cyclictest0-21swapper/411:20:006
2382799195,9cyclictest0-21swapper/307:20:005
2385799181,3cyclictest0-21swapper/907:50:1911
2385299184,8cyclictest0-21swapper/810:20:0010
2382799180,17cyclictest0-21swapper/311:15:175
2382399183,10cyclictest0-21swapper/212:05:004
2381899181,15cyclictest25880-21chrt09:58:041
2381899180,17cyclictest3157-21idleruntime10:10:161
299891170,1ptp4l21-21ksoftirqd/107:20:151
299891170,0ptp4l0-21swapper/108:30:171
2386199170,1cyclictest0-21swapper/1007:15:442
2385299173,10cyclictest0-21swapper/812:10:0010
2383999172,9cyclictest0-21swapper/509:35:017
2382399173,9cyclictest0-21swapper/209:00:234
2381899170,16cyclictest8187-21latency_hist12:24:591
94582160,0sleep50-21swapper/509:35:187
299891160,1ptp4l21-21ksoftirqd/109:05:261
299891160,1ptp4l21-21ksoftirqd/107:30:271
299891160,0ptp4l0-21swapper/108:30:011
299891160,0ptp4l0-21swapper/108:30:011
2387099165,7cyclictest0-21swapper/1110:40:013
2385799161,10cyclictest5050-21kworker/u24:210:30:0111
2385299162,9cyclictest0-21swapper/810:50:0110
2384399164,7cyclictest0-21swapper/607:10:248
2382799163,8cyclictest0-21swapper/312:30:005
2382399167,7cyclictest0-21swapper/208:10:014
2382399167,7cyclictest0-21swapper/208:10:004
2382399163,9cyclictest0-21swapper/209:20:014
2382399163,8cyclictest0-21swapper/208:40:244
2381899162,9cyclictest0-21swapper/111:15:001
2381899162,8cyclictest0-21swapper/111:48:341
2381899162,8cyclictest0-21swapper/107:40:011
23818991615,1cyclictest0-21swapper/108:54:481
2381899161,13cyclictest29401-21/usr/sbin/munin12:10:131
2381399163,8cyclictest0-21swapper/012:10:000
2381399162,9cyclictest0-21swapper/008:05:240
2381399162,9cyclictest0-21swapper/008:05:240
232352167,7sleep80-21swapper/807:05:4110
8982150,0chrt0-21swapper/911:30:2211
47472150,0sleep60-21swapper/612:20:008
299891150,1ptp4l21-21ksoftirqd/111:05:191
299891150,1ptp4l21-21ksoftirqd/110:40:021
299891150,1ptp4l21-21ksoftirqd/108:15:171
299891150,1ptp4l21-21ksoftirqd/108:15:171
299891150,1ptp4l21-21ksoftirqd/107:50:201
299891150,0ptp4l0-21swapper/112:35:151
299891150,0ptp4l0-21swapper/112:15:211
299891150,0ptp4l0-21swapper/111:00:161
299891150,0ptp4l0-21swapper/110:15:151
2386199152,8cyclictest0-21swapper/1009:55:312
2385799153,7cyclictest0-21swapper/911:50:0011
2385299153,8cyclictest0-21swapper/807:15:0110
2385299152,8cyclictest0-21swapper/807:30:0010
2385299152,8cyclictest0-21swapper/807:25:0110
2384899151,9cyclictest0-21swapper/709:45:019
2384899150,8cyclictest0-21swapper/711:24:599
2384399152,8cyclictest0-21swapper/609:30:018
2384399152,8cyclictest0-21swapper/609:15:018
2384399152,7cyclictest0-21swapper/608:35:238
2383999152,8cyclictest0-21swapper/508:20:247
2383999152,8cyclictest0-21swapper/508:20:247
23832991513,1cyclictest12002-21turbostat12:34:546
2382799153,7cyclictest0-21swapper/312:20:005
2382399152,9cyclictest0-21swapper/212:30:234
2381899154,6cyclictest0-21swapper/110:05:011
2381899153,8cyclictest0-21swapper/111:59:591
2381899152,8cyclictest0-21swapper/112:10:011
2381899152,8cyclictest0-21swapper/109:55:001
2381899152,7cyclictest0-21swapper/108:50:011
2381399153,8cyclictest0-21swapper/010:15:010
299891140,1ptp4l21-21ksoftirqd/110:45:121
299891140,0ptp4l0-21swapper/108:55:131
2387099142,8cyclictest0-21swapper/1108:45:013
2387099142,7cyclictest0-21swapper/1111:45:243
2386199143,7cyclictest0-21swapper/1011:35:232
2385799142,8cyclictest0-21swapper/910:15:2311
2385299143,7cyclictest0-21swapper/812:20:0010
2384899143,7cyclictest0-21swapper/711:00:009
2384899142,7cyclictest0-21swapper/711:50:009
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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