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2026-05-06 - 14:16

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #3

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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackeslot3s.osadl.org (updated Wed May 06, 2026 00:45:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1934096999427,13cyclictest1961043-21ssh21:52:580
193409699931,37cyclictest1987256-21ssh22:47:130
193409699918,10cyclictest2005264-21modprobe23:25:010
1934096998529,14cyclictest2028188-21ssh00:12:120
1934096998527,15cyclictest1983057-21ssh22:38:420
1934096998427,12cyclictest1974797-21ssh22:21:240
193409699842,41cyclictest1951452-21ssh21:33:060
1934096998323,25cyclictest1954354-21ssh21:39:080
1934096998119,5cyclictest16850irq/134-800000021:55:520
1934096998014,6cyclictest16850irq/134-800000022:10:300
1934096997919,14cyclictest2019685-21ssh23:54:530
193410399780,61cyclictest0-21swapper/220:50:032
1934096997828,17cyclictest1989178-21ssh22:51:040
1934096997525,4cyclictest0-21swapper/023:35:160
1934096997518,48cyclictest16850irq/134-800000000:37:220
1934096997429,10cyclictest2008620-21ssh23:31:350
1934096997423,13cyclictest2002298-21ssh23:18:420
1934096997417,50cyclictest16850irq/134-800000000:33:010
1934096997414,56cyclictest12-21ksoftirqd/022:17:490
1934096997414,18cyclictest16850irq/134-800000022:59:500
1934096997410,6cyclictest16850irq/134-800000022:32:310
193409699737,17cyclictest16850irq/134-800000022:07:100
193409699733,6cyclictest2007733-21munin-run23:30:000
1934096997326,14cyclictest2035201-21ssh00:26:440
1934096997326,14cyclictest2035201-21ssh00:26:430
1934096997326,13cyclictest1948549-21ssh21:26:480
1934096997324,14cyclictest1985124-21ssh22:42:560
1934096997324,14cyclictest1985124-21ssh22:42:550
1934096997316,52cyclictest16850irq/134-800000023:12:350
1934103997230,14cyclictest1940269-21diskmemload23:41:142
193409699722,9cyclictest2022207-21systemd-run00:00:020
193409699722,9cyclictest2022207-21systemd-run00:00:020
1934096997217,50cyclictest16850irq/134-800000021:47:470
1934096997217,45cyclictest16850irq/134-800000021:24:060
1934106997124,40cyclictest1-21systemd00:35:013
1934096997126,12cyclictest1994724-21ssh23:02:510
1934096997126,10cyclictest2025367-21ssh00:06:170
1934096997126,10cyclictest2025367-21ssh00:06:160
1934096997125,13cyclictest1944833-21ssh21:19:220
1934096997121,12cyclictest1965647-21ssh22:02:230
1934096997120,14cyclictest2015818-21ssh23:46:320
1934106997028,38cyclictest1939903-21cat21:00:013
1934096997022,8cyclictest2030031-21ssh00:15:580
1934096997013,47cyclictest16850irq/134-800000000:23:170
1934101996928,37cyclictest1951249-21sh21:32:321
1934096996930,34cyclictest19350irq/34-mmc119:55:020
193409699691,3cyclictest2014948-21modprobe23:45:000
1934101996819,44cyclictest3467602-21systemd-journal22:05:011
1934096996823,12cyclictest1976763-21ssh22:25:180
1934096996823,12cyclictest1976763-21ssh22:25:180
1934096996822,15cyclictest1996877-21ssh23:07:220
193409699681,39cyclictest2023630-21ssh00:02:460
1934103996753,11cyclictest2032891-21ssh00:21:532
1934103996722,14cyclictest1940269-21diskmemload21:52:262
1934106996624,38cyclictest37-21ksoftirqd/323:46:453
1934103996648,15cyclictest1980270-21ssh22:32:582
1934103996648,14cyclictest1966698-21ssh22:04:532
1934101996624,38cyclictest2021076-21sh23:57:281
1934101996624,38cyclictest2021076-21sh23:57:281
1934096996619,10cyclictest1934135-21wc19:10:010
1934103996552,10cyclictest1971925-21ssh22:15:252
193410199653,14cyclictest2002822-21ssh23:19:591
193409699652,21cyclictest1957158-21unin-run21:45:010
1934096996522,15cyclictest275-21dbus-daemon19:35:000
193410699641,16cyclictest1990269-21ssh22:53:403
1934103996452,9cyclictest2008109-21ssh23:30:242
1934103996448,13cyclictest1967101-21ssh22:05:162
1934103996448,13cyclictest1940600-21ssh21:10:152
1934103996447,13cyclictest2016397-21ssh23:47:522
1934103996447,13cyclictest2011491-21ssh23:37:472
1934103996447,13cyclictest1977908-21ssh22:28:012
1934103996447,13cyclictest1977908-21ssh22:28:002
1934103996447,13cyclictest1970155-21ssh22:11:542
1934103996447,13cyclictest1962911-21ssh21:56:432
1934103996446,14cyclictest2028115-21ssh00:11:582
1934103996446,14cyclictest1988142-21ssh22:49:132
1934103996446,14cyclictest1983975-21ssh22:40:152
1934103996446,14cyclictest1983975-21ssh22:40:152
193410199643,16cyclictest2012534-21ssh23:40:011
193410699634,9cyclictest1935318-21cron19:35:003
1934106996339,20cyclictest37-21ksoftirqd/323:45:013
193410699632,12cyclictest1983611-21cron22:40:013
1934103996350,11cyclictest1948937-21ssh21:27:452
1934103996348,12cyclictest2030485-21ssh00:16:582
1934103996348,12cyclictest1999199-21ssh23:12:072
1934103996348,12cyclictest1991550-21ssh22:56:022
1934103996347,13cyclictest2023402-21ssh00:02:162
1934103996347,13cyclictest1990254-21ssh22:53:392
1934103996347,12cyclictest2040868-21ssh00:38:412
1934103996346,14cyclictest2004188-21ssh23:22:312
1934103996346,14cyclictest1997630-21ssh23:09:062
1934103996346,14cyclictest1955555-21ssh21:41:192
1934103996346,13cyclictest2037889-21ssh00:32:212
1934103996346,13cyclictest2026939-21ssh00:09:562
1934103996346,13cyclictest2026939-21ssh00:09:552
1934103996346,13cyclictest2002634-21ssh23:19:262
1934103996346,13cyclictest1983472-21ssh22:39:432
1934103996346,13cyclictest1974822-21ssh22:21:272
1934103996346,13cyclictest1953390-21ssh21:37:002
1934103996346,13cyclictest1946263-21ssh21:22:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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