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2026-09-19 - 22:02

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 Sat Sep 19, 2026 12:45:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2996643991021,99cyclictest0-21swapper/010:25:020
2996643999924,53cyclictest3075273-21ssh11:47:030
2996643999732,20cyclictest3028583-21ssh10:05:070
299664399891,53cyclictest0-21swapper/009:35:090
299664399891,53cyclictest0-21swapper/009:35:090
299664399871,82cyclictest3038930-21sshd10:28:220
299664399862,46cyclictest3096311-21ssh12:32:340
2996643998624,33cyclictest3071577-21sh11:39:220
2996643998624,33cyclictest3071577-21sh11:39:220
2996643998320,33cyclictest3057238-21rm11:07:570
2996643998227,51cyclictest3023657-21sh09:54:590
299664399821,77cyclictest3050637-21ssh10:53:440
2996643998217,28cyclictest1-21systemd12:15:020
2996643998130,34cyclictest3059769-21ssh11:13:260
299664399801,48cyclictest0-21swapper/011:21:020
2996657997834,38cyclictest275-21dbus-daemon09:15:013
2996643997726,46cyclictest3061241-21ssh11:16:250
2996643997726,46cyclictest3061241-21ssh11:16:250
2996643997632,27cyclictest3005056-21ssh09:14:470
2996643997625,27cyclictest3002818-21diskmemload09:49:080
299664399761,51cyclictest0-21swapper/010:35:590
299664399761,51cyclictest0-21swapper/010:35:590
2996653997466,6cyclictest30-21ksoftirqd/212:00:022
2996653997466,6cyclictest30-21ksoftirqd/212:00:022
2996643997430,40cyclictest16950irq/224-800000011:30:010
299664399741,69cyclictest3016881-21sed09:40:010
2996643997330,27cyclictest3005987-21ssh09:16:260
299664399731,67cyclictest0-21swapper/010:32:220
299664399731,54cyclictest3090702-21ssh12:20:050
2996643997232,36cyclictest3079324-21ssh11:55:410
2996643997232,36cyclictest3079324-21ssh11:55:410
299664399721,53cyclictest3083455-21munin-run12:05:000
2996657997128,39cyclictest3002284-21cron09:00:003
299665799711,46cyclictest0-21swapper/308:05:023
2996643997127,26cyclictest3089318-21ssh12:17:260
299664399711,65cyclictest364-21snmpd09:08:390
299664399711,46cyclictest364-21snmpd10:48:570
2996643997031,35cyclictest3008733-21ssh09:22:320
299664399702,41cyclictest3062387-21kworker/u8:111:34:310
2996643996929,37cyclictest3011578-21ssh09:28:380
299664399692,62cyclictest0-21swapper/012:05:180
299664399692,62cyclictest0-21swapper/012:05:180
2996657996826,6cyclictest2997330-21latency_hist07:20:023
2996657996821,5cyclictest3067300-21latency_hist11:30:023
299664399682,34cyclictest3094971-21latency_hist12:30:030
299664399682,34cyclictest3094971-21latency_hist12:30:020
2996643996820,43cyclictest16850irq/134-800000011:54:290
2996643996719,31cyclictest16850irq/134-800000010:02:490
2996657996628,30cyclictest37-21ksoftirqd/312:20:023
2996643996631,31cyclictest3073175-21ssh11:42:390
2996643996614,48cyclictest2997363-21sshd07:24:560
2996649996528,33cyclictest3053543-21pluginstate11:00:011
2996649996521,40cyclictest23-21ksoftirqd/111:58:261
2996649996521,40cyclictest23-21ksoftirqd/111:58:261
299664399653,28cyclictest3034936-21ssh10:19:360
299664399652,59cyclictest3019147-21munin-run09:45:000
299664399652,59cyclictest3019147-21munin-run09:45:000
299664399652,58cyclictest3467602-21systemd-journal09:59:530
299664399651,34cyclictest0-21swapper/010:43:340
2996657996422,11cyclictest37-21ksoftirqd/310:53:003
2996649996432,28cyclictest3039379-21sh10:29:201
2996649996431,29cyclictest275-21dbus-daemon10:05:011
2996649996424,35cyclictest3031208-21sh10:11:081
299664999642,19cyclictest3097315-21latency_hist12:35:011
299664999642,16cyclictest3041934-21ssh10:35:011
299664399647,53cyclictest305516850ssh11:03:320
299664399641,59cyclictest2996638-21cyclictest12:35:100
299664399641,59cyclictest2996638-21cyclictest12:35:100
2996657996323,4cyclictest3070949-21sh11:37:533
2996657996323,4cyclictest3070949-21sh11:37:533
299664999632,17cyclictest364-21snmpd08:45:011
299664999632,15cyclictest3009186-21ssh09:23:301
2996649996320,38cyclictest3467602-21systemd-journal07:19:211
2996657996225,5cyclictest3046761-21latency_hist10:45:023
2996657996217,10cyclictest3097335-21munin-run12:35:003
2996649996228,29cyclictest3006480-21sh09:17:401
299664999622,18cyclictest3069590-21munin-run11:35:011
2996649996216,9cyclictest3051296-21wc10:55:021
2996649996215,6cyclictest3467602-21systemd-journal11:30:011
2996649996212,7cyclictest3001760-21sshd08:48:211
299664399622,26cyclictest2998663-21munin-run07:50:000
299664399621,57cyclictest0-21swapper/010:13:080
299664999612,15cyclictest3467602-21systemd-journal09:00:011
299664999611,18cyclictest3088940-21ssh12:16:281
2996643996131,26cyclictest3051662-21ssh10:55:440
2996657996021,11cyclictest37-21ksoftirqd/309:45:053
2996649996031,26cyclictest3000964-21sshd08:30:211
299664999602,15cyclictest3076071-21ssh11:49:001
299664999601,18cyclictest3033648-21ssh10:16:271
2996657995921,9cyclictest37-21ksoftirqd/312:05:153
2996657995921,9cyclictest37-21ksoftirqd/312:05:143
2996649995921,34cyclictest275-21dbus-daemon09:15:011
2996649995918,6cyclictest3094840-21rm12:29:351
2996649995918,6cyclictest3094840-21rm12:29:341
2996649995918,6cyclictest3087206-21rm12:12:541
2996649995916,9cyclictest3018737-1kworker/u9:109:49:021
299664999591,19cyclictest3091110-21ssh12:21:031
299664399592,53cyclictest2998916-21munin-run07:55:010
2996643995921,34cyclictest12-21ksoftirqd/007:15:020
299664399591,54cyclictest2999952-21munin-run08:15:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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