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2026-07-12 - 05:29

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 Jul 12, 2026 00:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1324721050,3sleep30-21swapper/321:48:323
1324721050,3sleep30-21swapper/321:48:323
1324721050,3sleep30-21swapper/321:48:323
308872900,3sleep30-21swapper/300:03:193
308872900,3sleep30-21swapper/300:03:193
32562840,3sleep30-21swapper/322:48:333
32562840,3sleep30-21swapper/322:48:333
32562840,3sleep30-21swapper/322:48:333
146472770,3sleep10-21swapper/123:18:341
283362740,9sleep1281ktimers/121:03:231
283362740,9sleep1281ktimers/121:03:231
283362740,9sleep1281ktimers/121:03:231
151242730,4chrt0-21swapper/320:27:593
151242730,4chrt0-21swapper/320:27:593
151242730,4chrt0-21swapper/320:27:593
81642720,3chrt0-21swapper/300:28:313
81642720,3chrt0-21swapper/300:28:313
81642720,3chrt0-21swapper/300:28:313
292512700,2chrt29254-21cpuspeed23:58:301
95212690,2chrt9523-21latency_hist20:13:181
95212690,2chrt9523-21latency_hist20:13:181
170232660,3sleep30-21swapper/320:33:183
170232660,3sleep30-21swapper/320:33:183
170232660,3sleep30-21swapper/320:33:183
53302650,1chrt0-21swapper/100:18:401
53302650,1chrt0-21swapper/100:18:401
253102630,1sleep10-21swapper/123:48:211
253102630,1sleep10-21swapper/123:48:211
19895995425,27cyclictest24493-21latency_hist20:53:180
19895995425,27cyclictest24493-21latency_hist20:53:180
152472530,3sleep10-21swapper/121:53:321
152472530,3sleep10-21swapper/121:53:321
152472530,3sleep10-21swapper/121:53:321
248252500,2chrt0-21swapper/322:18:353
248252500,2chrt0-21swapper/322:18:353
19895995041,7cyclictest0-21swapper/000:03:230
19895995041,7cyclictest0-21swapper/000:03:230
153202500,2sleep20-21swapper/221:53:332
153202500,2sleep20-21swapper/221:53:332
153202500,2sleep20-21swapper/221:53:332
303602490,3sleep30-21swapper/321:08:323
303602490,3sleep30-21swapper/321:08:323
262362480,3sleep30-21swapper/319:28:423
262362480,3sleep30-21swapper/319:28:423
1989599480,6cyclictest5628-21chrt20:01:550
1989599480,6cyclictest5628-21chrt20:01:550
262552470,2sleep20-21swapper/223:48:392
262552470,2sleep20-21swapper/223:48:392
1989599461,8cyclictest26951-21taskset23:51:260
1989599461,8cyclictest26951-21taskset23:51:260
1989599460,8cyclictest28958-21seq23:58:170
1989599460,8cyclictest28958-21seq23:58:170
1989599460,8cyclictest28525-21seq19:34:460
1989599460,8cyclictest28525-21seq19:34:460
1989599460,8cyclictest28525-21seq19:34:460
1989599451,7cyclictest1688-21taskset19:49:290
1989599451,7cyclictest1688-21taskset19:49:290
1989599441,6cyclictest23260-21seq23:42:090
1989599441,6cyclictest23260-21seq23:42:090
1989599441,6cyclictest23260-21seq23:42:090
1989599421,6cyclictest5571-21taskset00:19:000
1989599421,6cyclictest5571-21taskset00:19:000
19895994211,27cyclictest700-21192.168.115.40-manager20:24:130
19895994211,27cyclictest700-21192.168.115.40-manager20:24:130
19895994211,27cyclictest700-21192.168.115.40-manager20:24:130
19895994121,18cyclictest14678-21systemd-journal22:25:590
19895994121,18cyclictest14678-21systemd-journal22:25:590
19895994121,18cyclictest14678-21systemd-journal22:25:590
1989599402,6cyclictest749-21runrttasks00:11:200
1989599402,6cyclictest749-21runrttasks00:11:200
1989599402,6cyclictest749-21runrttasks00:11:200
10972400,10sleep1281ktimers/119:48:381
10972400,10sleep1281ktimers/119:48:381
19895993931,6cyclictest18233-21fschecks_time23:28:310
19895993930,6cyclictest21343-21mailstats22:08:400
19895993930,6cyclictest21343-21mailstats22:08:400
19895993930,6cyclictest21343-21mailstats22:08:400
1989599391,9cyclictest15570-21ntp_states21:53:370
1989599391,9cyclictest15570-21ntp_states21:53:370
1989599391,9cyclictest15570-21ntp_states21:53:370
29432380,2chrt2945-21latency00:13:341
29432380,2chrt2945-21latency00:13:341
19903993829,4cyclictest0-21swapper/100:03:421
19903993829,4cyclictest0-21swapper/100:03:421
19903993829,4cyclictest0-21swapper/100:03:421
19895993829,7cyclictest31019-21/usr/sbin/munin00:03:380
19895993829,7cyclictest31019-21/usr/sbin/munin00:03:380
19895993829,7cyclictest31019-21/usr/sbin/munin00:03:380
1989599381,9cyclictest32707-21kernelversion21:13:340
1989599381,9cyclictest32707-21kernelversion21:13:340
1989599381,9cyclictest19198-21latency_hist20:38:300
1989599381,8cyclictest9514-21gltestperf21:38:310
1989599381,8cyclictest9514-21gltestperf21:38:310
1989599381,7cyclictest7971-21/usr/sbin/munin00:28:350
1989599381,7cyclictest7971-21/usr/sbin/munin00:28:350
1989599381,7cyclictest18008-21cpuspeed23:28:290
1989599381,7cyclictest18008-21cpuspeed23:28:290
1989599380,35cyclictest4195-21/usr/sbin/munin21:23:350
1989599380,35cyclictest4195-21/usr/sbin/munin21:23:350
270622370,3sleep2351rcuc/222:23:402
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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