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2023-03-29 - 22:33

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, 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 33455 @1500 MHz, Linux 5.15.2-rt19 (Profile)

Latency plot of shadow in rack #c, 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 -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 50 highest latencies:
System rackcslot7s.osadl.org (updated Wed Mar 29, 2023 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
65634722660,7sleep30-21swapper/307:08:523
6565829912935,89cyclictest880898-21Xwayland10:55:220
6565969912739,11cyclictest881337-21WRRende~ckend#110:10:193
66607021170,17sleep126-21ksoftirqd/107:35:011
6565829911733,75cyclictest881337-21WRRende~ckend#109:21:150
69254221150,14sleep3411rcuc/308:50:153
656592991138,85cyclictest141rcu_preempt11:23:392
656582991135,9cyclictest141rcu_preempt09:47:310
656582991133,92cyclictest141rcu_preempt09:58:590
6565849911123,18cyclictest26-21ksoftirqd/112:39:141
6565829910940,28cyclictest1576137-21update-manager12:17:570
6565969910833,18cyclictest881337-21WRRende~ckend#111:45:543
656582991073,18cyclictest880898-21Xwayland12:28:580
656592991063,19cyclictest880898-21Xwayland08:52:592
6565969910531,8cyclictest141rcu_preempt09:05:303
656582991052,9cyclictest141rcu_preempt09:20:010
656592991042,95cyclictest881356-21Isolated14:31:442
656582991046,85cyclictest141rcu_preempt08:04:550
656582991043,9cyclictest0-21swapper/010:45:590
656582991043,9cyclictest0-21swapper/010:45:590
656582991022,95cyclictest880898-21Xwayland09:25:160
656582991022,95cyclictest880898-21Xwayland09:25:150
656592991012,95cyclictest880898-21Xwayland10:48:362
656592991012,95cyclictest880898-21Xwayland10:48:362
6565929910123,73cyclictest703966-21expr09:20:312
656582991019,82cyclictest13-21ksoftirqd/010:27:350
656582991019,7cyclictest0-21swapper/011:48:400
656582991013,92cyclictest881356-21Isolated14:31:440
656582991012,93cyclictest881364-21IPC0
656582991012,15cyclictest880898-21Xwayland07:24:380
6565929910089,6cyclictest0-21swapper/212:14:592
656592991004,90cyclictest881356-21Isolated14:31:442
656592991003,91cyclictest880966-21IPC2
656592991002,93cyclictest880898-21Xwayland07:43:242
656592991002,92cyclictest881356-21Isolated14:31:442
656592991002,15cyclictest880898-21Xwayland09:39:312
656592991002,13cyclictest880966-21IPC2
656582991004,92cyclictest0-21swapper/009:13:590
656582991002,94cyclictest113-1kworker/0:1H08:14:560
1623991000,86rtkit-daemon0-21swapper/007:06:440
7167072990,5sleep3411rcuc/309:57:213
65659299992,93cyclictest880898-21Xwayland12:18:572
65658299994,91cyclictest0-21swapper/007:15:580
65658299993,92cyclictest0-21swapper/012:14:580
65659299984,18cyclictest880898-21Xwayland08:32:122
65659299983,89cyclictest0-21swapper/212:28:582
65659299983,11cyclictest0-21swapper/207:26:072
65658299983,91cyclictest0-21swapper/008:37:590
65658299982,91cyclictest683500-21kworker/0:008:49:290
656582999817,75cyclictest881356-21Isolated14:31:440
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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