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2025-12-14 - 12:59

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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 rack4slot1s.osadl.org (updated Sun Dec 14, 2025 01:37:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1364121110,3sleep30-21swapper/321:06:553
130372910,6chrt0-21swapper/300:00:053
130372910,6chrt0-21swapper/300:00:053
123732900,3sleep10-21swapper/121:01:591
123732900,3sleep10-21swapper/121:01:591
42962780,3sleep30-21swapper/323:36:533
258282600,3chrt0-21swapper/323:06:553
107912590,1chrt0-21swapper/121:00:021
107912590,1chrt0-21swapper/121:00:021
59722440,3sleep20-21swapper/220:46:532
59722440,3sleep20-21swapper/220:46:532
47862440,2sleep10-21swapper/123:37:011
251692430,1sleep125294-21/usr/sbin/munin00:32:001
251692430,1sleep125294-21/usr/sbin/munin00:32:001
274412400,2sleep00-21swapper/020:16:560
212142400,2sleep10-21swapper/121:26:591
190082380,2sleep10-21swapper/121:21:541
190082380,2sleep10-21swapper/121:21:541
22062360,3sleep30-21swapper/323:31:513
22062360,3sleep30-21swapper/323:31:513
2514993429,4cyclictest572-21cups-browsed22:11:591
2514993427,5cyclictest22584-21unixbench-2d22:56:591
2514993328,4cyclictest1346-21avahi-daemon22:21:561
2514993327,3cyclictest0-21swapper/123:01:591
251399331,24cyclictest13065-21latency_hist00:00:060
251399331,24cyclictest13065-21latency_hist00:00:060
72062320,2sleep03252-21kworker/0:0+events20:50:050
72062320,2sleep03252-21kworker/0:0+events20:50:050
2514993226,4cyclictest12867-21latency_hist00:00:041
2514993226,4cyclictest12867-21latency_hist00:00:041
2514993224,6cyclictest15548-21cat22:40:021
2514993224,6cyclictest15548-21cat22:40:021
2513993224,6cyclictest602-21latency_hist22:00:010
2514993127,3cyclictest22175-21idleruntime-cro00:25:021
2514993127,3cyclictest22175-21idleruntime-cro00:25:021
2514993126,4cyclictest27218-21threads00:37:001
2514993126,4cyclictest27218-21threads00:37:001
2514993126,4cyclictest1346-21avahi-daemon21:51:571
2514993124,5cyclictest595-21sshd19:51:581
2514993124,5cyclictest595-21sshd19:51:581
2514993124,5cyclictest26927-21sshd23:10:431
2514993124,5cyclictest26927-21sshd23:10:431
2514993124,5cyclictest24815-21netstat21:36:571
2514993124,5cyclictest24815-21netstat21:36:571
27922300,2sleep02970-21sed20:36:580
2514993026,2cyclictest0-21swapper/121:10:011
2514993023,5cyclictest22761-21kernelversion21:31:531
2514993023,5cyclictest14786-21threads19:41:591
2513993022,5cyclictest550-21cron22:50:010
2513993018,4cyclictest2512-21cyclictest23:51:580
2513993018,4cyclictest2512-21cyclictest23:51:580
2514992925,2cyclictest0-21swapper/120:30:021
2514992925,2cyclictest0-21swapper/120:30:021
2514992924,3cyclictest3417-21kworker/u9:4-xprtiod00:00:241
2514992924,3cyclictest3417-21kworker/u9:4-xprtiod00:00:241
2514992922,5cyclictest7607-21fschecks_time20:51:511
2514992922,5cyclictest6848-21fschecks_time22:16:521
2514992922,5cyclictest24662-21latency_hist20:10:031
2514992922,5cyclictest24662-21latency_hist20:10:031
2513992922,5cyclictest9711-21grep22:21:580
2513992920,7cyclictest14035-21processes00:01:570
2513992920,7cyclictest14035-21processes00:01:570
2514992823,4cyclictest29352-21latency_hist21:50:021
2514992823,4cyclictest29352-21latency_hist21:50:021
2514992821,5cyclictest1666-21latency_hist20:35:051
2514992821,5cyclictest16124-21kernelversion19:46:521
2513992823,3cyclictest0-21swapper/020:35:010
2513992822,4cyclictest2512-21cyclictest22:17:000
2513992821,5cyclictest0-21swapper/021:40:020
2513992821,5cyclictest0-21swapper/021:40:020
321992270,2chrt32194-21gzip21:56:541
2514992723,3cyclictest31003-21fschecks_time23:21:521
2514992723,3cyclictest31003-21fschecks_time23:21:521
2514992721,5cyclictest5260-21latency_hist20:45:031
2514992721,5cyclictest5260-21latency_hist20:45:031
2514992720,5cyclictest27567-21sshd20:16:581
2514992720,5cyclictest16547-21needreboot22:41:571
2513992721,4cyclictest2512-21cyclictest22:38:230
2513992721,4cyclictest2512-21cyclictest22:38:230
2513992721,4cyclictest142-21systemd-journal00:34:580
2513992721,4cyclictest142-21systemd-journal00:34:580
2513992721,4cyclictest1346-21avahi-daemon19:56:590
2513992720,5cyclictest8600-21switchtime23:46:590
2513992720,5cyclictest6367-21latency_hist22:15:030
2513992719,6cyclictest12346-21fschecks_count22:31:520
2513992717,8cyclictest6134-21gltestperf23:41:530
2513992717,8cyclictest6134-21gltestperf23:41:530
2514992620,5cyclictest17856-21unixbench_multi21:16:591
2514992620,4cyclictest0-21swapper/121:41:521
2514992619,5cyclictest1264-21fschecks_time22:01:521
2514992619,5cyclictest1264-21fschecks_time22:01:521
2513992622,2cyclictest0-21swapper/020:21:530
2513992620,4cyclictest0-21swapper/019:41:590
2513992620,3cyclictest0-21swapper/023:07:540
2513992619,5cyclictest4389-21sshd22:09:580
2513992619,5cyclictest26847-21missed_timers00:36:550
2513992619,5cyclictest26847-21missed_timers00:36:550
2513992618,6cyclictest19827-21fschecks_time22:51:510
2513992618,6cyclictest19827-21fschecks_time22:51:510
2513992618,6cyclictest18163-21needreboot19:51:580
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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