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2022-07-06 - 18:13

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #7

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 Celeron N2930 @1833 MHz, Linux 5.10.47-rt46 (Profile)

Latency plot of shadow in rack #4, slot #7
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 --smi -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 100 highest latencies:
System rack4slot7s.osadl.org (updated Wed Jul 06, 2022 12:43:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
178232524470,41sleep10-21swapper/107:06:401
178132470411,45sleep00-21swapper/007:06:330
2227121540,4sleep10-21swapper/111:30:001
1828199310,16cyclictest22-21ksoftirqd/107:29:381
84272280,2sleep10-21swapper/109:30:011
247552280,6sleep024726-21switchtime11:35:060
57702270,2chrt0-21swapper/009:23:580
1828199278,7cyclictest22-21ksoftirqd/110:30:011
18281992712,7cyclictest22-21ksoftirqd/110:21:221
18281992712,7cyclictest22-21ksoftirqd/110:21:221
1828099275,5cyclictest131rcuc/012:18:120
1828099270,6cyclictest0-21swapper/010:25:060
1828099270,12cyclictest11209-21runrttasks12:25:030
1828199269,5cyclictest22-21ksoftirqd/108:14:551
1828199268,8cyclictest22-21ksoftirqd/112:21:021
1828199262,14cyclictest22-21ksoftirqd/112:15:071
1828199262,14cyclictest22-21ksoftirqd/107:16:111
18281992615,3cyclictest22-21ksoftirqd/112:24:561
18281992613,3cyclictest25858-21ntp_states10:15:031
1828099266,6cyclictest131rcuc/010:10:020
1828099265,8cyclictest496-21runrttasks12:08:430
1828099263,9cyclictest28985-21tune2fs07:34:580
1828099263,9cyclictest23546-21basename11:34:420
1828099263,9cyclictest13724-21munin-run11:09:420
1828099260,8cyclictest21183-21taskset11:26:320
1828199257,8cyclictest31933-21seq07:40:341
1828199257,8cyclictest22-21ksoftirqd/108:55:361
1828199257,8cyclictest22-21ksoftirqd/108:12:301
1828199257,5cyclictest22-21ksoftirqd/111:23:441
1828199256,9cyclictest22-21ksoftirqd/111:41:161
1828199256,8cyclictest22-21ksoftirqd/111:05:011
1828199256,8cyclictest22-21ksoftirqd/110:56:281
1828199255,8cyclictest22-21ksoftirqd/107:35:081
1828199255,3cyclictest141rcu_preempt11:50:001
1828199255,2cyclictest141rcu_preempt11:59:581
1828199254,8cyclictest141rcu_preempt09:15:091
1828199254,3cyclictest141rcu_preempt10:05:031
1828199253,5cyclictest0-21swapper/111:55:011
1828199252,9cyclictest22-21ksoftirqd/111:13:321
18281992512,3cyclictest22-21ksoftirqd/110:10:341
1828199250,6cyclictest197952chrt07:12:081
1828099256,6cyclictest131rcuc/007:15:350
1828099254,9cyclictest13363-21munin-run08:19:430
1828099254,8cyclictest496-21runrttasks10:47:490
1828099254,6cyclictest623-21munin-run11:59:430
1828099254,6cyclictest26894-21cstates07:29:580
1828099253,8cyclictest11258-21taskset08:12:430
1828099253,7cyclictest496-21runrttasks07:40:000
1828099253,6cyclictest496-21runrttasks07:54:050
1828099253,6cyclictest12-21ksoftirqd/012:35:080
1828099253,6cyclictest11483-21taskset09:39:070
1828099253,6cyclictest0-21swapper/012:09:540
1828099252,9cyclictest13983-21apt-get11:09:430
1828099252,8cyclictest21052-21taskset10:04:240
1828099252,8cyclictest16338-21ntp_states09:50:040
1828099252,6cyclictest12-21ksoftirqd/007:25:000
1828099252,10cyclictest30114-21grep11:50:020
1828099251,8cyclictest25170-21cut10:14:550
1828099251,11cyclictest15134-21runrttasks08:23:170
1828199248,4cyclictest22-21ksoftirqd/111:39:221
1828199248,4cyclictest22-21ksoftirqd/109:35:011
1828199247,8cyclictest22-21ksoftirqd/109:03:181
1828199247,5cyclictest22-21ksoftirqd/109:51:581
1828199247,5cyclictest22-21ksoftirqd/107:52:061
1828199246,9cyclictest22-21ksoftirqd/108:27:381
1828199246,8cyclictest22-21ksoftirqd/112:12:351
1828199246,8cyclictest22-21ksoftirqd/111:19:251
1828199246,8cyclictest22-21ksoftirqd/110:04:421
1828199246,8cyclictest22-21ksoftirqd/109:54:451
1828199246,8cyclictest22-21ksoftirqd/108:51:041
1828199246,8cyclictest22-21ksoftirqd/108:47:411
1828199246,8cyclictest22-21ksoftirqd/108:42:301
1828199246,8cyclictest1518-21chrt07:45:161
1828199246,7cyclictest14108-21apt-get12:34:451
1828199245,7cyclictest6521-21irqstats08:00:011
1828199242,9cyclictest22-21ksoftirqd/109:05:591
1828199242,8cyclictest22-21ksoftirqd/111:24:471
1828199242,8cyclictest22-21ksoftirqd/110:41:551
1828199242,8cyclictest22-21ksoftirqd/108:31:181
1828199242,4cyclictest22-21ksoftirqd/110:49:551
1828199241,7cyclictest1049-21ntp_states10:35:051
18281992411,4cyclictest22-21ksoftirqd/110:44:551
18281992410,5cyclictest22-21ksoftirqd/109:46:091
18281992410,2cyclictest22-21ksoftirqd/109:40:471
1828199240,8cyclictest22-21ksoftirqd/110:59:441
1828199240,7cyclictest1032-21ls09:10:051
1828099245,6cyclictest12-21ksoftirqd/010:55:000
1828099245,5cyclictest131rcuc/012:24:100
1828099245,5cyclictest131rcuc/007:10:370
1828099244,7cyclictest12-21ksoftirqd/010:30:090
1828099244,6cyclictest496-21runrttasks08:27:290
1828099244,6cyclictest29260-21munin-run11:49:430
1828099244,5cyclictest4442-21perl07:54:580
1828099244,5cyclictest131rcuc/009:32:180
1828099243,8cyclictest27261-21taskset11:43:490
1828099243,8cyclictest11427-21taskset11:02:170
1828099243,7cyclictest22689-21apt-get07:19:550
1828099243,7cyclictest12-21ksoftirqd/011:14:560
1828099243,7cyclictest12-21ksoftirqd/009:09:550
1828099243,6cyclictest887-21memory07:45:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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