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2022-11-29 - 08:56

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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 Core i3-6100U @2300 MHz, Linux 4.9.47-rt37 (Profile)

Latency plot of shadow in rack #7, 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 100, Linux 4.9.20-rt16, x86_64 highest latencies:
System rack7slot7s.osadl.org (updated Tue Nov 29, 2022 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2225099653650,2cyclictest0-21swapper/221:40:452
2225199624617,6cyclictest57450irq/127-enp2s0-21:40:463
2224899586573,12cyclictest31230-21kworker/0:021:40:460
2224999576574,1cyclictest0-21swapper/121:40:461
21693218665,115sleep30-21swapper/319:09:143
21567216364,92sleep10-21swapper/119:07:351
2047828461,12sleep20-21swapper/219:05:222
1969728160,17sleep00-21swapper/019:05:050
299822730,2sleep30-21swapper/323:08:073
177072720,1sleep00-21swapper/000:00:590
260202660,2sleep30-21swapper/300:07:263
223502620,2sleep20-21swapper/223:23:352
22251995249,2cyclictest57450irq/127-enp2s0-23:02:413
225632240,3sleep00-21swapper/023:44:200
225632240,3sleep00-21swapper/023:44:200
115612230,3sleep22225099cyclictest22:15:272
63692210,1sleep20-21swapper/220:55:172
325482210,2sleep30-21swapper/322:08:033
22251992018,1cyclictest0-21swapper/320:30:273
10662190,2sleep30-21swapper/322:29:373
185032180,1sleep00-21swapper/022:40:230
196732170,2sleep10-21swapper/120:13:071
2224999160,3cyclictest409-21ssh22:29:061
2224999160,3cyclictest12247-21ssh23:57:511
2224899162,7cyclictest24501-21munin-run20:25:000
2224899162,11cyclictest0-21swapper/022:35:220
2224899160,13cyclictest0-21swapper/023:10:140
310132150,1sleep10-21swapper/121:21:261
2225199150,14cyclictest0-21swapper/322:59:393
2225199150,14cyclictest0-21swapper/300:10:273
22249991513,1cyclictest0-21swapper/122:05:211
22249991513,1cyclictest0-21swapper/119:45:141
2224899152,8cyclictest31230-21kworker/0:020:10:140
22248991511,2cyclictest3-21ksoftirqd/022:05:210
22248991511,2cyclictest3-21ksoftirqd/019:45:130
220042152,12sleep257550irq/128-enp2s0-23:43:562
220042152,12sleep257550irq/128-enp2s0-23:43:562
219162150,13sleep357650irq/129-enp2s0-22:21:453
210252150,1sleep10-21swapper/123:43:101
210252150,1sleep10-21swapper/123:43:091
2225199147,6cyclictest16850irq/16-i801_smb19:55:243
2224999143,4cyclictest0-21swapper/121:15:211
22249991410,3cyclictest0-21swapper/100:10:511
2224999140,9cyclictest25-21ksoftirqd/122:15:021
2224899140,7cyclictest0-21swapper/000:20:000
2225199130,10cyclictest0-21swapper/300:25:203
2224999137,3cyclictest0-21swapper/123:50:311
2224999134,1cyclictest0-21swapper/100:05:311
2224999133,9cyclictest7981-21perf23:15:001
2224899134,6cyclictest3-21ksoftirqd/023:15:280
2224899131,3cyclictest0-21swapper/000:10:230
2224899131,11cyclictest0-21swapper/022:27:060
2224899130,11cyclictest0-21swapper/020:15:140
2225199127,4cyclictest16850irq/16-i801_smb23:50:563
2225199126,5cyclictest16850irq/16-i801_smb20:20:163
2224999128,3cyclictest39-21rcuop/222:55:231
2224999127,3cyclictest15577-21munin-run23:40:001
2224999123,1cyclictest0-21swapper/121:55:141
2224999120,7cyclictest0-21swapper/123:30:271
2224999120,3cyclictest30622-21ssh22:49:101
2224999120,3cyclictest15560-21ssh21:33:371
2224999120,3cyclictest0-21swapper/123:45:231
2224899125,6cyclictest3-21ksoftirqd/022:30:210
2224899123,4cyclictest3-21ksoftirqd/023:35:270
2224899121,5cyclictest20521-21munin-run21:59:590
2224899121,4cyclictest0-21swapper/021:30:180
2224899121,10cyclictest0-21swapper/022:10:190
2224899120,3cyclictest0-21swapper/022:57:330
2224899120,3cyclictest0-21swapper/021:39:470
2224899120,2cyclictest3-21ksoftirqd/021:20:200
2225199117,3cyclictest16850irq/16-i801_smb19:50:103
2225199116,4cyclictest16850irq/16-i801_smb21:00:243
2225199116,4cyclictest16850irq/16-i801_smb20:00:123
2225199116,4cyclictest16850irq/16-i801_smb19:10:243
2225199116,4cyclictest16850irq/16-i801_smb00:15:243
2225199115,4cyclictest17532-21sh20:10:003
2225099115,5cyclictest15252-21perf20:05:002
2225099114,2cyclictest0-21swapper/221:17:192
2225099113,6cyclictest0-21swapper/222:35:592
2225099111,4cyclictest18015-21ssh21:57:382
2225099111,4cyclictest0-21swapper/221:30:242
2224999117,2cyclictest22170-21systemctl20:20:001
2224999117,1cyclictest18521-21ssh22:40:241
2224999116,4cyclictest28-21rcuop/100:15:131
2224999113,0cyclictest0-21swapper/121:25:171
2224999112,8cyclictest25-21ksoftirqd/121:37:071
2224999111,0cyclictest0-21swapper/121:51:051
2224999110,8cyclictest25-21ksoftirqd/121:46:321
2224999110,5cyclictest0-21swapper/100:26:571
2224999110,4cyclictest0-21swapper/122:04:031
2224999110,4cyclictest0-21swapper/100:20:021
2224999110,3cyclictest0-21swapper/123:20:181
2224999110,3cyclictest0-21swapper/123:05:231
2224999110,3cyclictest0-21swapper/122:20:211
2224899116,4cyclictest0-21swapper/023:05:090
2224899115,5cyclictest3-21ksoftirqd/023:52:460
2224899114,3cyclictest3-21ksoftirqd/023:00:180
2224899114,3cyclictest11441-21awk22:15:260
2224899113,6cyclictest0-21swapper/023:28:540
2224899111,9cyclictest0-21swapper/019:30:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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