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2026-04-10 - 08:30

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 Fri Apr 10, 2026 00:45:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
232303899861,80cyclictest2334585-21ssh21:22:130
2323038998421,47cyclictest16850irq/134-800000021:19:360
2323038998323,56cyclictest2353997-21ssh22:07:200
2323038998323,56cyclictest2353997-21ssh22:07:200
2323038998032,40cyclictest275-21dbus-daemon23:45:010
2323038998030,34cyclictest2357708-21ssh22:15:430
2323038998030,34cyclictest2357708-21ssh22:15:430
2323038998027,49cyclictest16950irq/224-800000021:45:010
2323038997926,36cyclictest2370543-21ssh22:45:210
232303899781,12cyclictest2383473-21ssh23:15:130
232303899761,57cyclictest2330734-21ssh21:13:240
2323038997428,42cyclictest150-21pr/ttyS200:12:190
232303899741,5cyclictest2346748-21sshd21:50:130
232303899741,4cyclictest1-21systemd00:35:000
2323047997313,37cyclictest2402666-40mandb00:00:022
2323038997323,46cyclictest2397824-21ssh23:48:370
2323043997229,6cyclictest2419984-21sh00:40:021
232303899721,66cyclictest2329211-21diskmemload22:35:130
232303899714,3cyclictest0-21swapper/020:40:000
2323038997131,32cyclictest19350irq/34-mmc120:50:010
2323038997131,32cyclictest19350irq/34-mmc120:50:000
2323038997129,25cyclictest2341387-21ssh21:38:120
2323038997128,26cyclictest2336810-21ssh21:27:270
2323038997114,53cyclictest2374808-21ssh22:55:040
2323038997114,52cyclictest16850irq/134-800000023:59:160
2323038997112,53cyclictest16850irq/134-800000000:39:540
2323043997022,11cyclictest275-21dbus-daemon21:30:011
2323043997015,20cyclictest275-21dbus-daemon23:35:011
232303899706,55cyclictest16850irq/134-800000023:29:520
232303899701,7cyclictest48-21kcompactd023:35:200
2323038997017,50cyclictest16850irq/134-800000023:20:080
232303899691,64cyclictest0-21swapper/023:02:130
232303899691,64cyclictest0-21swapper/023:02:130
232303899684,49cyclictest16850irq/134-800000021:55:360
2323038996825,26cyclictest2361405-21ssh22:24:380
232303899681,5cyclictest3467602-21systemd-journal00:06:130
232303899681,5cyclictest3467602-21systemd-journal00:06:130
2323038996814,49cyclictest16850irq/134-800000022:33:250
2323043996713,9cyclictest2326600-21cron20:20:011
2323043996713,9cyclictest2326600-21cron20:20:011
2323038996726,37cyclictest2391696-21rm23:34:310
232303899672,61cyclictest2411874-21ssh00:20:470
232303899672,61cyclictest2411874-21ssh00:20:470
2323038996725,25cyclictest2362337-21ssh22:26:310
2323038996722,39cyclictest309-21in:imuxsock20:45:010
2323038996630,33cyclictest0-21swapper/021:50:020
2323038996630,32cyclictest16950irq/224-800000000:04:040
2323038996612,48cyclictest16850irq/134-800000022:01:350
2323038996612,34cyclictest19350irq/34-mmc100:20:030
2323052996524,34cyclictest275-21dbus-daemon21:45:013
2323043996531,15cyclictest2415717-21cat00:30:011
232303899654,56cyclictest16850irq/134-800000022:43:220
232303899652,14cyclictest2324279-21munin-run19:35:000
232303899651,59cyclictest2339167-21ssh21:32:580
2323043996429,8cyclictest23-21ksoftirqd/123:21:211
232303899641,2cyclictest0-21swapper/022:10:320
2323052996333,26cyclictest2356770-21sh22:13:553
2323043996323,10cyclictest2368024-21systemctl22:40:001
232303899635,49cyclictest16850irq/134-800000023:52:250
232303899632,5cyclictest2324542-21munin-run19:40:000
2323047996236,17cyclictest275-21dbus-daemon21:50:012
232303899622,54cyclictest16850irq/134-800000023:13:290
232303899622,54cyclictest16850irq/134-800000023:13:290
2323038996225,33cyclictest2415306-21ssh00:29:140
2323038996217,28cyclictest2379135-21ssh23:05:090
232305299613,16cyclictest2371684-21ssh22:48:213
232305299612,17cyclictest2386363-21ssh23:22:013
2323052996121,34cyclictest275-21dbus-daemon23:35:013
232304799613,39cyclictest291rcuc/222:40:022
2323043996126,9cyclictest23-21ksoftirqd/121:18:591
2323043996119,13cyclictest275-21dbus-daemon21:10:011
232303899612,18cyclictest2323785-21munin-run19:25:010
2323038996114,43cyclictest16850irq/134-800000022:51:050
2323038996114,43cyclictest16850irq/134-800000022:51:050
232303899611,14cyclictest364-21snmpd20:23:090
232305299602,16cyclictest2416218-21ssh00:31:003
2323052996020,34cyclictest0-21swapper/300:00:023
232305299601,20cyclictest2328965-21true21:05:013
232305299601,16cyclictest2408892-21ssh00:14:263
232305299601,14cyclictest2324014-21cron19:30:003
2323043996025,13cyclictest23-21ksoftirqd/100:31:431
232303899601,7cyclictest2326318-21sshd20:11:100
232303899601,13cyclictest364-21snmpd20:58:130
232305299593,16cyclictest2339979-21munin-run21:35:003
2323052995925,28cyclictest3467602-21systemd-journal22:40:003
2323052995923,32cyclictest37-21ksoftirqd/322:27:173
2323052995918,36cyclictest2329211-21diskmemload23:06:293
2323043995925,10cyclictest23-21ksoftirqd/100:12:351
2323043995916,15cyclictest275-21dbus-daemon00:00:011
232303899595,49cyclictest16950irq/224-800000020:05:000
232303899592,5cyclictest275-21dbus-daemon21:05:000
232303899591,6cyclictest2326594-21sshd20:19:130
232303899591,6cyclictest2326594-21sshd20:19:120
232303899591,5cyclictest2324027-21munin-run19:30:000
232303899591,54cyclictest2326274-21latency_hist20:10:030
2323052995819,35cyclictest309-21in:imuxsock19:51:063
2323047995847,6cyclictest2337888-21kworker/2:022:41:192
2323043995824,9cyclictest23-21ksoftirqd/121:32:131
232303899583,5cyclictest2325031-21sshd19:46:060
232303899581,4cyclictest2329238-21munin-run21:10:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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