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2026-08-02 - 19:04

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 Aug 02, 2026 12:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2280021080,2sleep30-21swapper/309:43:533
2280021080,2sleep30-21swapper/309:43:533
173372990,2chrt17331-21strings09:28:561
173372990,2chrt17331-21strings09:28:561
97522910,2chrt9755-21unixbench_multi10:34:001
97522910,2chrt9755-21unixbench_multi10:34:001
67812860,3sleep30-21swapper/311:53:583
67812860,3sleep30-21swapper/311:53:583
30937996633,9cyclictest700-21192.168.115.40-manager09:57:540
30937996633,9cyclictest700-21192.168.115.40-manager09:57:540
128892650,2sleep10-21swapper/109:18:471
127822560,3chrt0-21swapper/109:18:431
154962550,3chrt0-21swapper/312:18:503
154962550,3chrt0-21swapper/312:18:503
154962550,3chrt0-21swapper/312:18:503
172462520,2chrt17247-21cut12:23:420
172462520,2chrt17247-21cut12:23:420
172462520,2chrt17247-21cut12:23:420
30937995039,5cyclictest700-21192.168.115.40-manager12:25:500
30937995039,5cyclictest700-21192.168.115.40-manager12:25:500
30937994922,17cyclictest5572-21chrt07:32:130
30937994922,17cyclictest5572-21chrt07:32:130
30937994921,18cyclictest21188-21taskset11:05:100
30937994921,18cyclictest21188-21taskset11:05:100
30937994822,16cyclictest16209-21taskset09:25:370
30937994822,16cyclictest16209-21taskset09:25:370
30937994822,11cyclictest12621-21taskset09:18:070
30937994822,11cyclictest12621-21taskset09:18:070
30937994822,10cyclictest11091-21seq07:45:430
30937994822,10cyclictest11091-21seq07:45:430
30937994820,18cyclictest25465-21taskset09:49:410
30937994738,6cyclictest700-21192.168.115.40-manager12:40:520
30937994738,6cyclictest700-21192.168.115.40-manager12:40:520
30937994738,6cyclictest700-21192.168.115.40-manager12:40:520
30937994723,13cyclictest6965-21taskset09:03:090
30937994723,13cyclictest6965-21taskset09:03:090
30937994723,10cyclictest19985-21taskset09:36:180
30937994723,10cyclictest19985-21taskset09:36:180
30937994722,10cyclictest23223-21taskset11:12:220
30937994722,10cyclictest23223-21taskset11:12:220
30937994721,15cyclictest1099-21chrt08:44:570
30937994721,15cyclictest1099-21chrt08:44:570
30937994720,17cyclictest24452-21chrt08:23:340
30937994720,17cyclictest24452-21chrt08:23:340
30937994720,17cyclictest24452-21chrt08:23:340
30937994720,16cyclictest15576-21taskset10:50:060
30937994720,16cyclictest15576-21taskset10:50:060
30937994720,16cyclictest13320-21seq12:12:560
30937994720,16cyclictest13320-21seq12:12:560
30937994720,11cyclictest9448-21taskset12:01:150
30937994720,11cyclictest9448-21taskset12:01:150
212132470,3chrt0-21swapper/312:33:503
212132470,3chrt0-21swapper/312:33:503
64482460,2sleep30-21swapper/308:59:033
64482460,2sleep30-21swapper/308:59:033
30937994622,10cyclictest22736-21taskset12:38:330
30937994622,10cyclictest22736-21taskset12:38:330
30937994621,16cyclictest749-21runrttasks10:13:250
30937994621,16cyclictest749-21runrttasks10:13:250
30937994621,10cyclictest23542-21/usr/sbin/munin09:44:020
30937994621,10cyclictest23542-21/usr/sbin/munin09:44:020
30937994619,10cyclictest8878-21taskset09:08:300
30937994619,10cyclictest8878-21taskset09:08:300
30937994618,11cyclictest7283-21taskset07:35:150
30937994618,11cyclictest7283-21taskset07:35:150
30937994618,11cyclictest20258-21find12:29:010
30937994536,6cyclictest700-21192.168.115.40-manager10:26:330
30937994536,6cyclictest700-21192.168.115.40-manager10:26:330
30937994522,13cyclictest29346-21taskset10:01:430
30937994522,13cyclictest29346-21taskset10:01:430
30937994521,14cyclictest13979-21chrt10:48:300
30937994521,14cyclictest13979-21chrt10:48:300
30937994520,9cyclictest16689-21seq07:59:550
30937994520,9cyclictest16689-21seq07:59:550
30937994520,9cyclictest16689-21seq07:59:550
30937994520,11cyclictest31192-21taskset10:06:070
30937994520,10cyclictest4201-21sed11:48:470
30937994520,10cyclictest4201-21sed11:48:470
30937994520,10cyclictest30588-21seq11:30:510
30937994520,10cyclictest2957-21seq08:49:470
206952450,3sleep20-21swapper/211:04:002
206952450,3sleep20-21swapper/211:04:002
191492450,2sleep119148-21unixbench_singl10:59:011
191492450,2sleep119148-21unixbench_singl10:59:011
145072450,3sleep30-21swapper/312:14:003
145072450,3sleep30-21swapper/312:14:003
30938994438,5cyclictest14570-21sendmail09:23:371
30938994438,5cyclictest14570-21sendmail09:23:371
30938994438,5cyclictest14570-21sendmail09:23:371
30937994434,8cyclictest700-21192.168.115.40-manager11:37:180
30937994434,8cyclictest700-21192.168.115.40-manager11:37:180
30937994433,9cyclictest700-21192.168.115.40-manager09:33:080
30937994433,9cyclictest700-21192.168.115.40-manager09:33:080
30937994421,8cyclictest4877-21taskset08:55:330
30937994420,9cyclictest25172-21seq11:18:290
30937994420,9cyclictest25172-21seq11:18:290
30937994420,11cyclictest26743-21taskset11:19:420
30937994420,11cyclictest26743-21taskset11:19:420
30937994420,10cyclictest4266-21chrt10:20:000
30937994420,10cyclictest4266-21chrt10:20:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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