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2024-07-12 - 15:33

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 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rack7slot7s.osadl.org (updated Thu Jul 11, 2024 12:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10435210079,10sleep30-21swapper/307:09:223
1028729884,9sleep10-21swapper/107:07:271
1022429281,7sleep00-21swapper/007:06:370
154952910,0sleep30-21swapper/312:10:503
1020628666,16sleep20-21swapper/207:06:232
1058099290,0cyclictest0-21swapper/112:11:171
1058799280,28cyclictest0-21swapper/309:52:043
172772240,0sleep00-21swapper/009:44:040
1058599231,20cyclictest0-21swapper/207:20:132
1058099230,21cyclictest0-21swapper/112:20:091
10585992220,1cyclictest20042-21sed09:45:282
1058599220,22cyclictest0-21swapper/211:19:492
10585992119,2cyclictest0-21swapper/211:25:172
10585992012,5cyclictest224-21systemd-journal12:08:422
10580992020,0cyclictest0-21swapper/109:46:451
1058799190,1cyclictest0-21swapper/312:27:243
10580991917,1cyclictest4465-21ssh09:35:021
10580991916,2cyclictest21976-21sed12:15:181
10585991815,2cyclictest0-21swapper/209:20:362
10585991811,2cyclictest37850irq/131-snd_hda10:05:512
1058599180,17cyclictest0-21swapper/210:12:082
1058599180,0cyclictest0-21swapper/211:24:502
1058099180,1cyclictest0-21swapper/111:36:591
1058099180,18cyclictest0-21swapper/109:44:221
1057799181,2cyclictest141rcu_preempt12:00:220
1058099172,2cyclictest15744-21cstates10:30:231
10577991716,1cyclictest0-21swapper/008:40:140
26352160,1sleep00-21swapper/009:56:320
1058799168,5cyclictest0-21swapper/307:30:133
10587991614,1cyclictest0-21swapper/311:19:233
10585991615,1cyclictest0-21swapper/209:26:142
1058599161,14cyclictest29676-21kworker/u8:112:21:192
1058099163,9cyclictest27821-21ssh11:00:131
1058099160,13cyclictest0-21swapper/109:52:501
1058099160,12cyclictest0-21swapper/109:20:511
1057799164,6cyclictest18867-21munin-run08:35:000
1057799160,15cyclictest0-21swapper/009:30:140
184182150,1sleep00-21swapper/012:13:080
1058799151,1cyclictest0-21swapper/310:50:233
10587991511,2cyclictest27227-21cron11:40:003
1058799150,14cyclictest0-21swapper/312:37:093
1058599150,15cyclictest0-21swapper/211:04:252
10580991515,0cyclictest0-21swapper/111:54:201
1057799154,5cyclictest3488-21/usr/sbin/munin09:10:250
10577991510,3cyclictest14363-21cat10:50:380
1057799150,1cyclictest0-21swapper/008:25:170
1057799150,13cyclictest0-21swapper/009:35:210
1058799142,4cyclictest224-21systemd-journal10:35:133
1058799141,4cyclictest20331-21/usr/sbin/munin11:55:323
10587991411,2cyclictest0-21swapper/312:00:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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