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2026-07-11 - 01:33

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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.

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 rack7slot3s.osadl.org (updated Fri Jul 10, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3251621850,6sleep31823499cyclictest10:34:393
3251621850,6sleep31823499cyclictest10:34:393
18229991091,88cyclictest0-21swapper/010:15:330
182299910731,61cyclictest8767-21ssh12:02:540
18232991064,23cyclictest7950irq/56-dwc_otg_12:35:171
18232991064,23cyclictest7950irq/56-dwc_otg_12:35:171
182299910329,61cyclictest13977-21grep08:25:460
182299910329,61cyclictest13977-21grep08:25:460
182299910227,51cyclictest24271-21tune2fs08:55:350
182299910227,51cyclictest24271-21tune2fs08:55:350
182299910065,14cyclictest0-21swapper/012:35:180
182299910065,14cyclictest0-21swapper/012:35:180
182299910028,52cyclictest18098-21timerandwakeup09:35:450
18229999530,48cyclictest31577-21/usr/sbin/munin07:45:400
18229999430,46cyclictest12252-21awk10:10:150
18229999429,45cyclictest11665-21grep12:05:440
18229999328,50cyclictest27945-21sed12:25:430
18229999327,48cyclictest0-21swapper/009:20:360
18229999327,43cyclictest14278-21unixbench_singl09:30:460
18229999227,45cyclictest10968-21grep08:20:160
18229999131,48cyclictest30959-21grep11:10:440
18229999023,52cyclictest0-21swapper/007:40:370
18229998928,42cyclictest0-21swapper/011:05:430
18229998832,11cyclictest14883-21tune2fs12:10:320
18229998827,42cyclictest0-21swapper/011:45:450
18229998824,47cyclictest0-21swapper/010:05:160
18229998732,34cyclictest15075-21ssh10:12:530
18229998726,43cyclictest22148-21/usr/sbin/munin11:40:260
18229998726,33cyclictest0-21swapper/009:49:030
18229998724,48cyclictest8805-21chrt08:12:290
18229998626,46cyclictest0-21swapper/011:15:380
18229998624,40cyclictest6637-21runrttasks10:41:320
163292860,9sleep3381ktimersoftd/311:32:493
18229998529,39cyclictest6732-21latency_hist12:40:160
18229998526,41cyclictest0-21swapper/007:32:210
18229998524,46cyclictest0-21swapper/009:27:460
18229998433,28cyclictest9581-21ssh11:25:200
18229998428,44cyclictest0-21swapper/009:14:230
18229998425,45cyclictest0-21swapper/010:34:030
18229998425,45cyclictest0-21swapper/010:34:030
18229998330,40cyclictest707-21/usr/sbin/munin10:35:350
18229998231,40cyclictest25173-21ssh10:25:310
18229998231,39cyclictest23763-21chrt11:02:380
18229998228,40cyclictest10885-21rm10:46:460
18229998228,26cyclictest3004-21ssh09:17:020
18229998226,42cyclictest30815-21ssh09:51:420
18229998226,26cyclictest3910-21ssh09:59:390
18229998224,11cyclictest22502-21modprobe12:20:150
18229998127,43cyclictest32201-21sh11:51:330
18229998126,39cyclictest11705-21grep08:20:380
18229998125,41cyclictest0-21swapper/010:23:230
18229998123,44cyclictest7298-21sh11:21:340
18229998026,43cyclictest16881-21/usr/sbin/munin08:35:340
18229998026,41cyclictest0-21swapper/009:40:360
18229998023,12cyclictest28961-21latency_hist07:40:160
18229998021,33cyclictest13936-21ssh10:50:390
18229998020,46cyclictest0-21swapper/008:01:350
18229997931,45cyclictest22236-21df_inode08:50:310
18233997829,21cyclictest7950irq/56-dwc_otg_09:45:432
18229997827,40cyclictest0-21swapper/008:33:560
18229997822,33cyclictest20107-21ssh11:37:090
1823399774,45cyclictest0-21swapper/212:35:182
18233997730,28cyclictest7950irq/56-dwc_otg_10:15:312
18229997725,26cyclictest18624-21ssh10:55:490
18229997720,47cyclictest0-21swapper/011:57:350
1823399768,37cyclictest2611-21grep12:35:172
18229997633,28cyclictest3517-21taskset07:58:580
18229997629,27cyclictest27159-21sshd09:03:400
18229997626,30cyclictest0-21swapper/007:29:440
18229997622,40cyclictest0-21swapper/009:08:590
64842750,2sleep20-21swapper/212:00:292
18233997511,44cyclictest7850irq/56-dwc_otg10:55:412
18229997527,33cyclictest0-21swapper/008:50:090
200432740,5sleep11823299cyclictest11:37:011
18229997324,32cyclictest1476-21chrt07:50:590
18229997324,32cyclictest1476-21chrt07:50:590
18229997321,33cyclictest21333-21seq07:16:450
132152730,2sleep20-21swapper/208:25:352
132152730,2sleep20-21swapper/208:25:352
131682730,4sleep337-21rcuc/312:08:243
18229997227,28cyclictest22709-21ssh12:20:160
18229997223,39cyclictest17538-21ssh11:34:590
18229997223,37cyclictest0-21swapper/008:40:430
18234996914,26cyclictest8050irq/56-dwc_otg_10:55:403
37392680,3sleep337-21rcuc/308:00:153
18229996825,34cyclictest22344-21irqstats07:20:360
18229996825,34cyclictest22344-21irqstats07:20:360
18229996821,44cyclictest195262sleep007:11:420
18232996620,27cyclictest0-21swapper/110:55:411
18229996218,27cyclictest0-21swapper/008:05:320
1823499597,39cyclictest8050irq/56-dwc_otg_07:25:463
18234995913,23cyclictest7950irq/56-dwc_otg_12:35:163
18234995913,23cyclictest7950irq/56-dwc_otg_12:35:163
1823299596,31cyclictest7950irq/56-dwc_otg_10:15:311
18234995813,14cyclictest7850irq/56-dwc_otg10:15:333
1823299573,18cyclictest29035-21ssh10:30:261
1823299573,18cyclictest29035-21ssh10:30:261
1823499569,21cyclictest0-21swapper/311:35:453
1823399568,29cyclictest8050irq/56-dwc_otg_11:35:452
1823299561,12cyclictest0-21swapper/110:10:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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