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2022-07-07 - 01:30

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #a, 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 Atom E3940 @1600 MHz, Linux 5.10.41-rt42 (Profile)

Latency plot of shadow in rack #a, 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
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 rackaslot8s.osadl.org (updated Wed Jul 06, 2022 12:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1604421770,12sleep20-21swapper/207:05:222
16588214896,25sleep30-21swapper/307:06:033
166052139102,25sleep00-21swapper/007:06:160
165662139103,25sleep10-21swapper/107:05:451
43352840,2sleep10-21swapper/112:05:361
131112600,2sleep20-21swapper/212:15:002
171482590,2sleep30-21swapper/310:20:193
321862580,2sleep20-21swapper/211:04:132
45512550,2sleep30-21swapper/310:38:563
66432530,1sleep20-21swapper/212:37:552
246482520,8sleep228-21ksoftirqd/210:56:252
324842510,2sleep032452-21ssh10:35:000
273432500,1sleep10-21swapper/108:45:241
227732460,1sleep00-21swapper/007:20:240
40422430,2sleep30-21swapper/312:35:193
25582420,2sleep10-21swapper/111:05:361
21572420,1sleep00-21swapper/010:35:440
34352390,2sleep10-21swapper/112:35:141
24942390,1sleep30-21swapper/310:06:453
270312380,1sleep20-21swapper/212:26:352
42252330,3chrt0-21swapper/209:39:272
189102280,2sleep10-21swapper/111:20:241
1716899285,13cyclictest34-21ksoftirqd/309:25:223
288052270,11sleep228-21ksoftirqd/211:30:132
288052270,11sleep228-21ksoftirqd/211:30:132
17168992723,3cyclictest331rcuc/311:47:173
17168992710,3cyclictest141rcu_preempt12:15:003
301572260,2sleep10-21swapper/111:01:261
1716899268,8cyclictest34-21ksoftirqd/307:32:513
1716899267,5cyclictest790250lldpd09:05:133
1716899267,10cyclictest34-21ksoftirqd/312:18:133
1716899266,10cyclictest34-21ksoftirqd/309:48:393
1716899264,13cyclictest34-21ksoftirqd/309:40:253
1716899263,6cyclictest34-21ksoftirqd/312:27:283
17168992621,3cyclictest331rcuc/310:56:523
1716899261,7cyclictest34-21ksoftirqd/309:55:183
17168992610,8cyclictest34-21ksoftirqd/311:44:513
1716799261,23cyclictest0-21swapper/207:10:262
1716599261,24cyclictest0-21swapper/007:10:340
1716899258,4cyclictest34-21ksoftirqd/312:00:083
1716899257,9cyclictest34-21ksoftirqd/309:22:313
1716899257,6cyclictest34-21ksoftirqd/307:25:223
1716899256,6cyclictest34-21ksoftirqd/311:25:223
1716899253,7cyclictest34-21ksoftirqd/311:50:133
17168992521,3cyclictest331rcuc/310:29:253
1716899251,9cyclictest6576-21chrt09:11:113
1716899251,23cyclictest0-21swapper/307:10:193
17167992515,7cyclictest26313-21df07:30:152
17166992523,1cyclictest0-21swapper/107:10:251
299392240,3sleep129924-21munin-run08:55:011
1716899247,8cyclictest34-21ksoftirqd/309:38:413
1716899247,4cyclictest34-21ksoftirqd/310:02:013
1716899247,10cyclictest34-21ksoftirqd/312:31:343
1716899244,7cyclictest34-21ksoftirqd/311:15:153
1716899243,8cyclictest34-21ksoftirqd/309:00:103
1716899243,7cyclictest34-21ksoftirqd/310:15:043
1716899242,7cyclictest34-21ksoftirqd/311:05:493
1716899242,6cyclictest34-21ksoftirqd/309:15:423
17168992419,3cyclictest331rcuc/312:22:363
17168992419,3cyclictest331rcuc/312:22:353
17168992419,3cyclictest331rcuc/310:11:123
1716899240,6cyclictest28128-21apt-get07:35:123
17167992412,10cyclictest27558-21sed10:00:192
17166992413,8cyclictest22592-21df10:55:141
1716699241,11cyclictest106152sh10:44:431
1716899237,9cyclictest34-21ksoftirqd/312:06:123
1716899233,7cyclictest34-21ksoftirqd/310:43:233
1716899233,12cyclictest34-21ksoftirqd/309:50:193
1716899233,12cyclictest34-21ksoftirqd/309:50:183
1716899231,7cyclictest34-21ksoftirqd/311:02:133
1716899230,7cyclictest34-21ksoftirqd/311:30:043
1716899230,7cyclictest34-21ksoftirqd/311:30:033
17167992314,7cyclictest415-21df_inode07:45:142
17166992315,6cyclictest23838-21ssh09:27:091
1716599234,14cyclictest6685-21snmpd11:18:340
1716599233,14cyclictest16325-21apt-get10:20:120
17165992317,4cyclictest12-21ksoftirqd/012:20:000
17165992314,7cyclictest7957-21/usr/sbin/munin12:10:200
17165992314,6cyclictest22789-21python309:55:280
1716899228,3cyclictest34-21ksoftirqd/311:12:503
1716899226,9cyclictest34-21ksoftirqd/310:48:323
1716899226,8cyclictest34-21ksoftirqd/307:15:453
1716899225,6cyclictest34-21ksoftirqd/309:30:183
1716899223,10cyclictest34-21ksoftirqd/311:20:383
1716899222,7cyclictest34-21ksoftirqd/310:30:193
1716899222,4cyclictest34-21ksoftirqd/308:40:123
1716899221,6cyclictest34-21ksoftirqd/311:35:023
1716899221,6cyclictest34-21ksoftirqd/310:51:163
1716899220,5cyclictest0-21swapper/307:55:123
1716799221,9cyclictest111502sh11:43:202
17167992217,3cyclictest32042-21sh12:30:572
17167992214,6cyclictest5902-21ls09:10:292
17167992214,6cyclictest20265-21ls08:30:192
17167992214,6cyclictest17037-21cron08:25:002
17167992212,6cyclictest55350irq/142-enp3s0-11:35:112
1716599228,10cyclictest3955-21diskmemload11:20:210
1716599222,15cyclictest16031-21kworker/u8:110:05:110
17165992212,7cyclictest498-21dbus-daemon11:45:230
1716899217,11cyclictest21902-21cut07:20:153
1716899213,7cyclictest34-21ksoftirqd/308:50:183
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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