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2026-01-12 - 12:43

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 376 highest latencies:
System rack2slot7s.osadl.org (updated Sun Jan 11, 2026 19:55:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
386771997461,5cyclictest0-21swapper/117:40:011
386771997363,7cyclictest1194284-21grep18:10:041
386771997363,7cyclictest1194284-21grep18:10:041
386770996854,7cyclictest0-21swapper/017:35:010
386770996854,7cyclictest0-21swapper/017:35:010
386772996351,8cyclictest1194080-21multi.sh18:10:042
386772996351,8cyclictest1194080-21multi.sh18:10:042
386772995840,9cyclictest521811-21spawn17:35:002
386772995840,9cyclictest521811-21spawn17:35:002
386772995746,7cyclictest698269-21execl17:49:592
386770995745,8cyclictest564-21dbus-daemon18:00:010
386772995547,5cyclictest701341-21Run17:57:002
386771995529,13cyclictest661649-21od17:42:041
386770995445,6cyclictest1193733-21multi.sh18:10:030
386770995445,6cyclictest1193733-21multi.sh18:10:030
386770995335,16cyclictest616208-21sh17:39:590
386771995227,7cyclictest1243100-21multi.sh18:12:151
386770995237,5cyclictest678340-21multi.sh17:42:470
386772995143,5cyclictest615818-21sh17:39:572
386770995139,8cyclictest582-21systemd-logind18:25:010
386771995041,5cyclictest698270-21execl17:50:041
386772994940,5cyclictest685439-21multi.sh17:43:042
386770994937,9cyclictest0-21swapper/017:25:000
386772994839,5cyclictest1244515-21rm18:12:182
386770994839,6cyclictest1198579-21rm18:10:170
386770994734,10cyclictest703057-21context118:01:050
386772994639,3cyclictest0-21swapper/217:20:012
38677199462,39cyclictest392403-21munin-run17:25:011
386771994536,4cyclictest0-21swapper/117:55:001
386771994317,10cyclictest487607-21spawn17:34:111
386771994317,10cyclictest487607-21spawn17:34:111
386770994334,7cyclictest0-21swapper/017:49:470
386772994234,5cyclictest700540-21systemd-run17:55:012
386772994233,5cyclictest1268485-21systemd-run18:25:012
386771994232,6cyclictest814142-21spawn18:03:181
386771994232,5cyclictest393964-21systemd-run17:30:011
386772994032,5cyclictest389296-21Run17:15:012
386772994032,5cyclictest1272837-21sendmail18:40:002
386772993930,6cyclictest392548-21latency_hist17:25:022
386771993927,9cyclictest1266201-21sshd18:16:041
38677099396,10cyclictest14-21ksoftirqd/017:30:010
386772993830,5cyclictest1267054-21idleruntime-cro18:20:002
386771993826,9cyclictest387679-21ntpq17:09:541
386772993729,5cyclictest1270019-21systemd-run18:30:012
386771993728,5cyclictest1-21systemd18:30:011
386771993726,7cyclictest389177-21ntpq17:14:581
386771993725,9cyclictest1272770-21ntpq18:39:581
386772993630,3cyclictest0-21swapper/218:02:552
386771993628,5cyclictest576-21polkitd18:24:361
386771993626,7cyclictest1271226-21netstat18:34:531
386770993624,9cyclictest1271451-21awk18:35:000
386770993529,3cyclictest0-21swapper/017:20:010
386770993524,9cyclictest389293-21cron17:15:000
386770993522,11cyclictest699491-21sed17:50:110
386771993418,10cyclictest699846-21fstime17:55:051
386770993428,4cyclictest388273-21latency_hist17:10:020
386772993326,3cyclictest0-21swapper/217:10:022
386772993324,5cyclictest394180-21cut17:30:032
386771993223,6cyclictest390015-21sshd17:16:201
386770993117,3cyclictest171rcu_preempt18:19:560
386770993021,5cyclictest151ktimers/018:29:550
386771992916,9cyclictest386774-21sh17:05:011
386770992920,2cyclictest171rcu_preempt18:39:510
386772992517,5cyclictest1270928-21cut18:34:492
386772992317,2cyclictest0-21swapper/217:05:022
38677099237,7cyclictest171rcu_preempt17:05:020
38677399182,8cyclictest0-21swapper/317:55:023
38677399182,7cyclictest0-21swapper/317:39:563
38677399163,8cyclictest0-21swapper/317:57:043
38677399163,7cyclictest0-21swapper/317:20:013
38677399163,6cyclictest0-21swapper/318:06:453
38677399163,6cyclictest0-21swapper/318:06:453
38677399161,6cyclictest0-21swapper/318:29:533
38677399156,6cyclictest0-21swapper/317:44:093
38677399152,8cyclictest0-21swapper/317:49:573
38677399152,7cyclictest0-21swapper/318:10:093
38677399152,6cyclictest0-21swapper/317:14:553
38677399151,6cyclictest0-21swapper/317:09:533
38677399143,7cyclictest0-21swapper/317:25:003
38677399143,4cyclictest0-21swapper/318:40:003
38677399131,8cyclictest0-21swapper/317:35:003
38677399131,8cyclictest0-21swapper/317:35:003
38677399131,8cyclictest0-21swapper/317:30:013
38677399123,6cyclictest0-21swapper/318:00:123
38677399121,6cyclictest0-21swapper/318:35:003
38677399111,6cyclictest0-21swapper/318:25:003
38677399111,5cyclictest0-21swapper/318:15:053
3867739981,4cyclictest0-21swapper/317:05:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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