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2025-11-22 - 02:56

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 Nov 22, 2025 00:39:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2299695995645,8cyclictest1-21systemd21:45:012
2299693995336,7cyclictest12450irq/32-eth023:39:120
2299694995243,5cyclictest2465710-21latency_hist00:00:031
2299694995243,5cyclictest2465710-21latency_hist00:00:031
2299693995245,3cyclictest0-21swapper/022:00:010
2299693994940,5cyclictest2365978-21grep21:49:230
2299693994933,12cyclictest2381690-21latency_hist22:10:020
2299695994838,6cyclictest2450452-21ls23:40:012
2299694994838,7cyclictest1-21systemd00:15:011
2299694994837,7cyclictest453-21systemd-logind19:30:021
2299693994832,8cyclictest12450irq/32-eth020:24:120
2299694994735,8cyclictest2326268-21mailstats20:39:221
2299695994532,10cyclictest2453017-21latency23:44:102
2299695994532,10cyclictest2453017-21latency23:44:102
229969499456,31cyclictest2338688-21ssh21:14:111
2299694994537,5cyclictest2446640-21munin-plugin-st23:35:011
2299695994436,5cyclictest2469371-21munin-plugin-st00:05:012
2299695994435,6cyclictest2308671-21grep19:40:012
229969599441,38cyclictest2365380-21ssh21:49:112
2299694994436,5cyclictest2415992-21systemd-run22:55:011
2299695994335,4cyclictest0-21swapper/200:00:022
2299695994335,4cyclictest0-21swapper/200:00:022
2299695994335,3cyclictest0-21swapper/219:24:162
2299695994333,6cyclictest421-21avahi-daemon22:55:092
2299694994335,5cyclictest2404534-21sendmail22:40:011
229969499431,35cyclictest2384482-21ssh22:14:111
229969499424,31cyclictest2460759-21ssh23:54:091
2299693994234,5cyclictest2302668-21cron19:20:000
2299693994232,5cyclictest0-21swapper/022:29:030
2299693994232,5cyclictest0-21swapper/022:29:030
2299693994228,11cyclictest2308377-21switchtime19:39:200
2299695994132,6cyclictest421-21avahi-daemon23:03:582
2299694994131,7cyclictest2400693-21cron22:35:001
2299694994131,7cyclictest2400693-21cron22:35:001
2299694994131,6cyclictest2465701-21cups-browsed00:29:161
2299693994135,4cyclictest2423661-21latency_hist23:05:020
2299693994130,8cyclictest2334369-21latency_hist21:05:020
2299695994032,5cyclictest2318218-21fschecks_time20:14:022
2299695994029,7cyclictest955-21mta-sts-daemon21:39:442
229969599402,32cyclictest2457073-21ssh23:49:142
229969599402,32cyclictest2457073-21ssh23:49:142
2299694994031,6cyclictest2354439-21unixbench-2d21:34:261
2299694994030,6cyclictest491530-21cups-browsed23:13:531
2299693994032,5cyclictest491530-21cups-browsed21:29:060
2299693994031,6cyclictest959-21mta-sts-daemon00:39:270
2299693994015,16cyclictest657-21snmpd19:24:170
2299693994011,23cyclictest491530-21cups-browsed23:59:120
2299693994011,23cyclictest491530-21cups-browsed23:59:120
2299693994010,24cyclictest657-21snmpd22:19:130
229969599397,16cyclictest2335673-21diskmemload22:19:022
2299694993933,3cyclictest0-21swapper/121:00:011
2299694993931,5cyclictest2418364-21fschecks_count22:59:041
2299693993932,3cyclictest2358738-21kworker/u8:15-rpciod22:54:070
2299693993928,4cyclictest2335878-21latency_hist21:10:030
229969399392,29cyclictest2407376-21ssh22:44:110
2299695993829,6cyclictest453-21systemd-logind19:30:012
2299695993828,7cyclictest453-21systemd-logind00:20:012
2299694993831,3cyclictest0-21swapper/123:29:181
2299694993830,5cyclictest2389294-21idleruntime-cro22:20:011
2299694993830,5cyclictest2320714-21systemd-run20:20:011
2299693993829,6cyclictest2429225-21kworker/u8:6-rpciod23:14:220
2299693993829,5cyclictest2445563-21needreboot23:34:090
2299693993826,5cyclictest2324574-21ntpq20:34:120
229969599373,26cyclictest2441834-21ssh23:29:162
2299695993729,5cyclictest2301714-21fschecks_count19:19:052
2299694993729,5cyclictest422-21dbus-daemon19:15:011
2299694993729,5cyclictest2480131-21diskmemload00:20:011
2299694993728,6cyclictest491502-21cupsd21:24:071
2299694993728,5cyclictest422-21dbus-daemon21:35:521
2299694993727,5cyclictest0-21swapper/100:04:181
2299694993718,8cyclictest171rcu_preempt00:09:081
2299694993718,8cyclictest171rcu_preempt00:09:081
2299693993731,4cyclictest2446655-21kworker/u8:2+xprtiod00:04:080
2299693993727,7cyclictest2488848-21latency00:34:080
2299693993726,8cyclictest2384886-21ssh22:14:220
2299693993726,6cyclictest2326040-21ntpq20:39:130
2299693993713,15cyclictest2425428-21ssh23:08:250
2299695993628,5cyclictest2486635-21ssh00:30:012
2299695993627,6cyclictest491-21gdbus20:20:012
2299695993627,6cyclictest2325203-21latency_hist20:35:032
229969499363,27cyclictest2426484-21ssh23:09:131
2299694993628,5cyclictest2449376-21grep23:39:091
2299694993624,9cyclictest2395789-21missed_timers22:29:081
2299694993624,9cyclictest2395789-21missed_timers22:29:081
2299693993629,4cyclictest2393095-21cron22:25:010
2299693993629,4cyclictest2393095-21cron22:25:010
2299693993629,3cyclictest0-21swapper/020:49:150
2299693993627,5cyclictest2473107-21systemd-run00:10:010
2299693993627,5cyclictest2473107-21systemd-run00:10:010
2299693993612,7cyclictest2335673-21diskmemload23:45:360
2299693993612,7cyclictest2335673-21diskmemload23:45:360
2299693993612,18cyclictest2376819-21ssh22:04:110
2299693993611,17cyclictest0-21swapper/020:44:120
229969599354,24cyclictest2430454-21ssh23:14:232
2299695993528,3cyclictest0-21swapper/223:20:022
2299695993527,5cyclictest0-21swapper/223:35:012
2299694993530,3cyclictest0-21swapper/119:35:011
2299694993529,3cyclictest0-21swapper/121:55:011
2299694993527,5cyclictest957-21mta-sts-daemon22:25:021
2299694993527,5cyclictest957-21mta-sts-daemon22:25:021
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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