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2025-12-20 - 22:16

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, 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.

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 rack2slot7s.osadl.org (updated Sat Dec 20, 2025 07:55:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1333298996254,5cyclictest2142182-21sh06:10:031
1333298996254,5cyclictest2142182-21sh06:10:031
1333297996142,16cyclictest2105134-21tee06:08:310
1333297996142,16cyclictest2105134-21tee06:08:310
1333297995426,26cyclictest1609944-21sh05:42:200
1333299995344,5cyclictest2172162-21multi.sh06:11:132
1333298995344,6cyclictest2156767-21sh06:10:361
1333297995330,20cyclictest2215052-21sh06:12:530
1333299995242,6cyclictest2136574-21sh06:09:452
1333299995242,6cyclictest2136574-21sh06:09:452
1333297995233,16cyclictest1337907-21cat05:20:000
133329799512,28cyclictest1640907-21execl05:49:460
1333297995019,3cyclictest0-21swapper/005:50:290
1333298994943,3cyclictest0-21swapper/105:39:461
1333297994924,22cyclictest0-21swapper/005:39:380
1333299994738,5cyclictest1599357-21multi.sh05:41:542
1333297994619,6cyclictest1698937-21spawn06:03:020
1333298994537,5cyclictest1612756-21sh05:42:261
1333298994528,7cyclictest1485485-21spawn05:34:421
1333298994528,7cyclictest1485485-21spawn05:34:421
1333299994436,5cyclictest1640907-21execl05:49:442
1333298994437,4cyclictest1640907-21execl05:49:481
1333297994427,12cyclictest1467964-21spawn05:34:440
1333297994427,12cyclictest1467964-21spawn05:34:440
1333297994423,3cyclictest0-21swapper/005:59:340
1333297994418,4cyclictest1336189-21cron05:15:010
133329999432,34cyclictest1644114-21Run05:59:442
1333298994132,6cyclictest1642332-21fstime05:54:391
1333299994033,4cyclictest2224174-21systemd-run06:35:012
1333298994032,5cyclictest1333320-21latency_hist05:05:011
1333299993932,4cyclictest0-21swapper/205:40:002
1333299993931,5cyclictest2221233-21munin-plugin-st06:25:012
1333298993829,6cyclictest1686289-21spawn06:03:001
1333298993814,16cyclictest271ktimers/105:59:471
1333299993627,6cyclictest1735843-21spawn06:03:102
133329799360,30cyclictest1340464-21pipe05:29:450
1333298993527,5cyclictest2223778-21systemctl06:34:501
133329899350,31cyclictest1338221-21fstime05:24:421
1333299993427,4cyclictest1519581-21cron05:35:012
1333299993427,4cyclictest1519581-21cron05:35:012
1333299993421,10cyclictest1340373-21ntp_kernel_err05:29:422
1333299993326,4cyclictest1642223-21execl05:50:522
1333299993325,5cyclictest1339376-21unixbench_singl05:24:532
1333299993323,7cyclictest351ktimers/205:14:452
1333298993325,5cyclictest1338069-21latency_hist05:20:021
1333297993325,5cyclictest2224166-21systemd-run06:35:010
1333297993324,7cyclictest2221231-21munin-run06:25:010
1333299993216,3cyclictest0-21swapper/206:30:012
1333298993226,3cyclictest1333304-21kworker/u8:13+xprtiod05:15:011
1333297993217,9cyclictest151ktimers/006:19:450
1333299993125,4cyclictest1333296-21cyclictest06:20:032
1333298993124,3cyclictest0-21swapper/105:10:001
1333298993021,6cyclictest2221212-21cron06:25:011
1333297993020,7cyclictest582-21systemd-logind06:40:020
1333299992919,7cyclictest2225044-21ntp_kernel_pll_06:39:442
1333298992920,5cyclictest638-21rs:main1
1333297992918,9cyclictest1165-21mta-sts-daemon05:23:050
133329999272,4cyclictest0-21swapper/205:09:382
1333298992723,2cyclictest0-21swapper/106:20:011
1333298992718,6cyclictest2222074-21needreboot06:29:411
1333298992617,5cyclictest1339707-21fstime05:28:141
1333299992211,7cyclictest1337907-21sendmail05:20:002
1333297992114,5cyclictest1212220-21cups-browsed05:09:430
1333297992110,8cyclictest0-21swapper/006:30:010
133330099183,10cyclictest0-21swapper/305:56:153
1333299991810,4cyclictest369-21systemd-journal05:05:012
133330099177,7cyclictest0-21swapper/305:39:443
133329799177,6cyclictest1333296-21cyclictest05:05:000
133330099164,8cyclictest0-21swapper/305:49:453
133330099163,5cyclictest0-21swapper/305:24:443
133330099161,6cyclictest0-21swapper/306:29:443
133330099159,4cyclictest0-21swapper/306:11:083
133330099152,8cyclictest0-21swapper/305:42:543
133330099152,8cyclictest0-21swapper/305:27:213
133330099152,7cyclictest0-21swapper/306:00:373
133330099142,6cyclictest0-21swapper/306:24:453
133330099142,6cyclictest0-21swapper/306:19:493
133330099141,9cyclictest0-21swapper/306:07:263
133330099141,9cyclictest0-21swapper/306:07:263
133330099132,6cyclictest0-21swapper/306:35:023
133330099132,6cyclictest0-21swapper/305:50:053
133330099131,6cyclictest0-21swapper/305:14:413
133330099121,7cyclictest0-21swapper/305:34:443
133330099121,7cyclictest0-21swapper/305:34:443
133330099121,6cyclictest0-21swapper/305:19:363
133330099111,6cyclictest0-21swapper/305:09:433
13333009992,5cyclictest0-21swapper/306:40:013
13333009991,4cyclictest431ktimers/305:05:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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