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2023-01-28 - 17:53

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #5

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 i3-8145UE @2200 MHz, Linux 5.10.27-rt36 (Profile)

Latency plot of shadow in rack #e, slot #5
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 highest latencies:
System rackeslot5s.osadl.org (updated Sat Jan 28, 2023 12:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7503992625,1cyclictest34-21ksoftirqd/311:00:003
750299260,25cyclictest2317-21diskmemload10:44:322
7501992623,2cyclictest0-21swapper/112:05:261
750199260,20cyclictest0-21swapper/112:36:401
750399250,24cyclictest1146-21diskmemload10:23:123
750299250,24cyclictest13419-21apt-get10:55:182
7501992521,3cyclictest0-21swapper/110:20:011
7501992519,5cyclictest32573-21wc09:40:011
750199250,24cyclictest0-21swapper/112:34:361
750199250,21cyclictest22513-21apt-get09:30:151
750199250,21cyclictest20665-21ssh11:00:501
750199250,21cyclictest0-21swapper/111:48:471
7500992523,2cyclictest0-21swapper/012:24:140
750099250,24cyclictest11445-21df_inode09:50:190
7503992422,1cyclictest0-21swapper/312:30:223
7503992421,2cyclictest5608-21ssh11:49:473
750399241,22cyclictest1146-21diskmemload11:53:043
750399240,24cyclictest1146-21diskmemload10:35:553
750399240,23cyclictest1146-21diskmemload11:22:353
7502992422,1cyclictest0-21swapper/212:20:202
750299242,1cyclictest26113-21ssh11:37:112
7502992421,2cyclictest32585-21munin-plugin-st09:40:012
7502992420,4cyclictest0-21swapper/209:40:292
750299240,23cyclictest1146-21diskmemload11:10:512
750299240,23cyclictest1146-21diskmemload10:30:472
750299240,23cyclictest0-21swapper/212:29:102
750299240,23cyclictest0-21swapper/211:57:252
750299240,23cyclictest0-21swapper/210:10:092
750299240,23cyclictest0-21swapper/209:52:532
7501992422,2cyclictest0-21swapper/110:20:441
7501992422,1cyclictest0-21swapper/111:55:001
7501992422,1cyclictest0-21swapper/110:58:111
7501992420,4cyclictest18814-21rm10:28:561
7501992418,5cyclictest9679-21sh09:48:381
750199240,23cyclictest21998-21latency_hist07:40:011
750199240,23cyclictest1146-21diskmemload11:41:071
750199240,23cyclictest0-21swapper/111:15:091
750199240,23cyclictest0-21swapper/110:51:401
750199240,23cyclictest0-21swapper/110:44:371
750199240,23cyclictest0-21swapper/109:53:291
750199240,21cyclictest0-21swapper/110:02:241
750199240,20cyclictest0-21swapper/112:01:261
750199240,1cyclictest0-21swapper/112:21:351
750199240,0cyclictest0-21swapper/110:37:311
750199240,0cyclictest0-21swapper/109:29:181
7503992323,0cyclictest1146-21diskmemload10:52:553
7503992323,0cyclictest0-21swapper/312:06:573
7503992323,0cyclictest0-21swapper/311:34:203
7503992323,0cyclictest0-21swapper/310:41:153
7503992321,1cyclictest0-21swapper/309:50:293
750399232,0cyclictest34-21ksoftirqd/309:35:573
7503992320,3cyclictest34-21ksoftirqd/309:05:023
750399230,2cyclictest934-21sh10:10:263
750399230,23cyclictest0-21swapper/312:22:013
750399230,23cyclictest0-21swapper/311:41:183
750399230,22cyclictest9090-21ssh09:16:033
750399230,22cyclictest5450-21ssh11:17:483
750399230,22cyclictest5271-21ssh10:15:233
750399230,0cyclictest1146-21diskmemload11:02:223
750399230,0cyclictest1146-21diskmemload10:49:283
750399230,0cyclictest0-21swapper/312:01:523
750399230,0cyclictest0-21swapper/311:27:093
750399230,0cyclictest0-21swapper/309:24:213
7502992323,0cyclictest0-21swapper/211:32:552
7502992323,0cyclictest0-21swapper/210:20:082
7502992323,0cyclictest0-21swapper/210:15:522
7502992323,0cyclictest0-21swapper/209:46:242
7502992323,0cyclictest0-21swapper/209:11:172
7502992322,1cyclictest0-21swapper/210:53:442
7502992321,1cyclictest0-21swapper/212:35:182
7502992321,1cyclictest0-21swapper/209:27:042
7502992319,0cyclictest0-21swapper/212:17:462
750299230,2cyclictest11410-21sh11:23:582
750299230,22cyclictest25713-21ssh11:05:322
750299230,22cyclictest16486-21diskmemload12:30:232
750299230,22cyclictest0-21swapper/211:00:392
750299230,1cyclictest3125-21ssh11:45:492
750299230,0cyclictest1370-21kworker/u8:210:36:042
750299230,0cyclictest1146-21diskmemload09:23:442
750299230,0cyclictest0-21swapper/212:12:482
750299230,0cyclictest0-21swapper/212:06:282
750299230,0cyclictest0-21swapper/210:04:382
750299230,0cyclictest0-21swapper/209:58:182
750299230,0cyclictest0-21swapper/209:32:522
7501992323,0cyclictest0-21swapper/112:15:101
7501992322,1cyclictest0-21swapper/109:40:401
7501992321,2cyclictest0-21swapper/110:06:421
7501992321,1cyclictest0-21swapper/111:55:081
7501992321,1cyclictest0-21swapper/111:36:171
7501992321,1cyclictest0-21swapper/111:11:001
7501992321,1cyclictest0-21swapper/111:08:061
750199230,2cyclictest31665-21sendmail-msp08:00:011
750199230,23cyclictest0-21swapper/109:12:521
750199230,22cyclictest7323-21apt-get11:20:151
750199230,22cyclictest0-21swapper/112:12:491
750199230,22cyclictest0-21swapper/111:30:161
750199230,22cyclictest0-21swapper/110:13:381
750199230,1cyclictest0-21swapper/109:17:281
750199230,0cyclictest1146-21diskmemload10:46:281
750199230,0cyclictest1146-21diskmemload10:32:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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