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2026-01-11 - 14:49

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #6

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
Compare latency of primary with shadow system
Characteristics of the 792 highest latencies:
System rackeslot6s.osadl.org (updated Sun Jan 11, 2026 00:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2576497999185,4cyclictest22-21rcuc/119:10:011
2576495998985,2cyclictest0-21swapper/021:45:190
257649799756,15cyclictest2615538-21apt-get22:55:011
257650099694,24cyclictest0-21swapper/221:30:012
257649799666,8cyclictest2585257-21apt-get20:00:021
2576500996216,17cyclictest0-21swapper/223:10:012
2576500995727,14cyclictest0-21swapper/200:35:012
257649799572,34cyclictest22-21rcuc/121:15:001
257650099552,20cyclictest30-21rcuc/222:40:012
257649799551,24cyclictest0-21swapper/120:35:011
2576495995347,4cyclictest0-21swapper/020:05:120
2576495995347,4cyclictest0-21swapper/020:05:120
257649599531,6cyclictest0-21swapper/022:15:110
257649599531,6cyclictest0-21swapper/022:15:110
257649599525,8cyclictest0-21swapper/020:00:020
2576495995245,4cyclictest0-21swapper/019:30:010
257649599523,46cyclictest0-21swapper/022:20:240
2576495995143,4cyclictest167350irq/118-8000000.ethernet-tx023:05:180
2576495995140,6cyclictest0-21swapper/023:20:290
2576495995139,9cyclictest2629987-21sendmail00:20:000
2576495995137,11cyclictest0-21swapper/019:45:280
2576497995036,8cyclictest2583536-21grep19:45:291
2576497995035,10cyclictest0-21swapper/123:05:301
2576500994831,12cyclictest311ktimers/200:35:122
2576500994829,13cyclictest0-21swapper/200:10:252
257649599489,29cyclictest0-21swapper/021:25:000
2576495994839,5cyclictest0-21swapper/021:35:220
257649599482,40cyclictest0-21swapper/019:45:010
2576500994720,19cyclictest30-21rcuc/221:30:192
2576500994720,19cyclictest30-21rcuc/221:30:192
257649799472,27cyclictest0-21swapper/123:40:001
2576497994717,20cyclictest167450irq/126-8000000.ethernet-tx120:35:271
2576500994630,11cyclictest0-21swapper/223:55:012
2576497994630,11cyclictest2602498-21grep21:35:291
2576495994639,4cyclictest20650irq/252-8000000.ethernet20:55:230
257650099459,2cyclictest0-21swapper/220:15:002
2576500994537,4cyclictest2581876-21cron19:40:012
2576497994531,9cyclictest0-21swapper/122:35:351
257649599453,40cyclictest0-21swapper/019:10:170
257649599453,40cyclictest0-21swapper/019:10:170
2576495994530,12cyclictest2588817-21grep20:20:000
257650099447,13cyclictest32-21ksoftirqd/200:25:022
257650099447,13cyclictest32-21ksoftirqd/200:25:022
2576500994434,4cyclictest0-21swapper/220:25:292
2576500994434,4cyclictest0-21swapper/220:25:292
2576500994433,5cyclictest0-21swapper/220:40:302
2576500994433,5cyclictest0-21swapper/220:40:292
2576500994419,16cyclictest311ktimers/219:40:152
257649599445,4cyclictest0-21swapper/021:15:010
2576495994433,8cyclictest2616468-21apt23:00:000
2576500994331,8cyclictest311ktimers/220:35:282
2576500994314,8cyclictest2631036-21/usr/sbin/munin00:25:202
2576500994312,26cyclictest30-21rcuc/222:10:172
2576497994334,5cyclictest0-21swapper/122:40:301
2576497994333,7cyclictest2611088-21unixbench_singl22:25:291
257649799431,25cyclictest0-21swapper/123:45:001
2576495994336,4cyclictest167350irq/118-8000000.ethernet-tx022:40:260
2576495994336,3cyclictest0-21swapper/019:10:000
257649599433,37cyclictest0-21swapper/020:00:060
2576495994332,8cyclictest2618932-21grep23:10:290
2576495994327,11cyclictest0-21swapper/000:05:300
257649599432,3cyclictest0-21swapper/022:00:180
257649599432,39cyclictest0-21swapper/023:55:240
257649599432,39cyclictest0-21swapper/023:55:230
257649599432,38cyclictest2628617-21dropbear00:10:190
257649599431,7cyclictest2604937-21/usr/sbin/munin21:50:260
257649599431,40cyclictest0-21swapper/020:45:120
257649599431,21cyclictest0-21swapper/021:10:010
2576500994233,6cyclictest2577373-21munin-plugin-st19:15:002
2576500994233,6cyclictest2577373-21munin-plugin-st19:15:002
2576500994231,7cyclictest0-21swapper/219:10:012
2576500994229,9cyclictest2578515-21sendmail19:19:592
257650099422,8cyclictest0-21swapper/223:00:012
2576500994226,8cyclictest2611171-21latency_hist22:30:012
2576497994234,4cyclictest2576491-21cyclictest23:50:011
2576497994232,5cyclictest2607653-21grep22:05:281
2576497994229,8cyclictest0-21swapper/121:05:281
257649799421,28cyclictest0-21swapper/100:30:011
2576495994235,4cyclictest0-21swapper/020:35:250
257649599423,11cyclictest0-21swapper/000:30:010
2576495994227,11cyclictest0-21swapper/023:45:290
257650099413,33cyclictest32-21ksoftirqd/221:40:012
2576497994128,9cyclictest2633150-21phc2sys00:35:271
2576497994125,12cyclictest0-21swapper/123:00:281
2576497994125,12cyclictest0-21swapper/123:00:281
257649799411,22cyclictest0-21swapper/122:15:011
2576495994129,8cyclictest0-21swapper/019:50:270
2576495994128,8cyclictest0-21swapper/020:40:300
2576495994128,8cyclictest0-21swapper/020:40:300
257649599412,4cyclictest2590306-21/usr/sbin/munin20:25:270
257649599412,4cyclictest2590306-21/usr/sbin/munin20:25:270
257649599411,5cyclictest2578721-21dpkg19:20:100
257649599411,37cyclictest0-21swapper/021:00:300
257649599411,34cyclictest0-21swapper/021:20:010
257649599411,10cyclictest2606029-21head21:55:290
2576500994027,9cyclictest311ktimers/219:45:112
2576500994024,11cyclictest0-21swapper/222:45:202
2576500994023,11cyclictest0-21swapper/221:40:282
2576500994023,10cyclictest0-21swapper/219:50:282
2576500994022,12cyclictest311ktimers/220:55:122
2576497994030,5cyclictest0-21swapper/119:15:191
2576497994027,7cyclictest0-21swapper/119:30:191
2576497994026,7cyclictest2628235-21grep00:05:301
257649799401,21cyclictest0-21swapper/121:00:011
2576495994032,4cyclictest2633267-21sendmail_mailqu00:35:270
257649599402,35cyclictest1660-21snmpd19:18:390
257649599401,12cyclictest2623803-21proc_pri23:40:270
257650099394,19cyclictest30-21rcuc/222:55:012
2576500993932,4cyclictest0-21swapper/219:55:302
2576500993929,6cyclictest311ktimers/222:30:202
2576500993925,9cyclictest0-21swapper/221:15:282
2576500993924,10cyclictest0-21swapper/223:55:252
2576500993924,10cyclictest0-21swapper/223:55:252
2576497993929,6cyclictest0-21swapper/121:50:291
2576497993929,5cyclictest0-21swapper/122:30:161
2576497993928,5cyclictest2592945-21grep20:40:301
2576497993928,5cyclictest2592945-21grep20:40:301
2576497993923,11cyclictest0-21swapper/119:35:271
2576497993922,8cyclictest0-21swapper/120:15:291
2576497993922,12cyclictest0-21swapper/121:35:011
2576497993922,12cyclictest0-21swapper/121:35:011
2576495993932,4cyclictest167350irq/118-8000000.ethernet-tx023:25:240
257649599391,4cyclictest0-21swapper/020:50:250
257649599391,3cyclictest2589329-21meminfo20:20:250
257649599391,36cyclictest0-21swapper/022:05:150
2576500993830,5cyclictest311ktimers/220:30:252
2576500993827,6cyclictest0-21swapper/220:45:312
2576500993821,10cyclictest0-21swapper/223:31:212
257649799385,17cyclictest22-21rcuc/123:55:011
257649799385,17cyclictest22-21rcuc/123:55:011
2576497993828,5cyclictest0-21swapper/121:20:011
2576497993827,6cyclictest0-21swapper/100:00:281
2576497993825,9cyclictest0-21swapper/120:15:001
257649799381,28cyclictest0-21swapper/119:25:001
2576495993830,6cyclictest0-21swapper/023:35:210
2576495993830,5cyclictest20850irq/208-8000000.ethernet22:10:280
257649599381,4cyclictest2621937-21lsblk23:30:220
257649599381,4cyclictest0-21swapper/000:30:240
257649599381,35cyclictest0-21swapper/022:35:210
257649599381,34cyclictest0-21swapper/021:30:250
257649599381,34cyclictest0-21swapper/021:30:240
2576500993728,5cyclictest0-21swapper/222:00:002
2576500993727,6cyclictest0-21swapper/219:20:262
2576500993726,6cyclictest0-21swapper/220:20:272
2576500993725,8cyclictest0-21swapper/221:45:272
2576500993722,10cyclictest0-21swapper/219:30:292
257650099371,29cyclictest32-21ksoftirqd/221:10:212
2576497993732,2cyclictest0-21swapper/120:10:011
2576497993732,2cyclictest0-21swapper/120:10:011
2576497993724,8cyclictest0-21swapper/123:20:291
257649799372,3cyclictest0-21swapper/120:20:001
2576495993730,4cyclictest167350irq/118-8000000.ethernet-tx022:45:190
2576495993730,4cyclictest0-21swapper/023:00:140
2576495993730,4cyclictest0-21swapper/023:00:130
2576495993730,3cyclictest2588134-21latency_hist20:15:020
2576495993729,5cyclictest20850irq/208-8000000.ethernet23:50:180
2576495993727,7cyclictest2611145-21cut22:30:010
2576495993727,5cyclictest0-21swapper/023:15:290
2576495993719,7cyclictest0-21swapper/019:35:010
257649599371,34cyclictest0-21swapper/022:50:150
257649599371,34cyclictest0-21swapper/000:00:140
257650099368,23cyclictest0-21swapper/220:05:252
257650099368,23cyclictest0-21swapper/220:05:252
2576500993627,6cyclictest311ktimers/200:00:212
2576500993627,5cyclictest0-21swapper/222:15:212
2576500993627,5cyclictest0-21swapper/222:15:212
2576500993626,6cyclictest0-21swapper/222:00:292
2576497993622,7cyclictest0-21swapper/121:45:001
2576497993620,10cyclictest0-21swapper/123:10:291
257649599361,2cyclictest0-21swapper/021:25:210
2576500993529,3cyclictest2576491-21cyclictest20:15:292
2576500993528,5cyclictest311ktimers/223:15:252
2576500993527,4cyclictest0-21swapper/223:35:282
2576500993525,7cyclictest311ktimers/223:25:122
2576500993525,7cyclictest311ktimers/200:15:292
257650099352,26cyclictest32-21ksoftirqd/223:25:002
257650099351,5cyclictest2605116-21grep21:50:282
2576497993513,18cyclictest231ktimers/121:25:201
2576495993529,4cyclictest0-21swapper/020:30:230
2576495993528,4cyclictest0-21swapper/000:20:170
2576495993528,4cyclictest0-21swapper/000:20:170
2576495993516,17cyclictest0-21swapper/022:34:420
2576500993428,4cyclictest14-21rcu_preempt22:20:172
2576500993427,5cyclictest311ktimers/221:24:312
2576497993426,5cyclictest0-21swapper/119:25:271
2576497993425,6cyclictest0-21swapper/119:15:011
2576497993425,6cyclictest0-21swapper/119:15:011
2576497993425,5cyclictest2593791-21grep20:45:321
2576497993424,6cyclictest2632548-21unixbench_singl00:30:291
2576497993424,6cyclictest0-21swapper/122:50:261
257649799341,6cyclictest0-21swapper/121:25:011
257649599341,4cyclictest2581874-21sendmail19:40:000
257650099335,4cyclictest30-21rcuc/219:30:012
2576500993324,7cyclictest14-21rcu_preempt20:00:292
2576497993325,5cyclictest167450irq/126-8000000.ethernet-tx120:50:291
2576497993320,8cyclictest2606002-21grep21:55:281
2576497993314,4cyclictest167450irq/126-8000000.ethernet-tx100:20:291
2576497993314,4cyclictest167450irq/126-8000000.ethernet-tx100:20:281
257649799331,2cyclictest0-21swapper/120:05:011
2576495993318,11cyclictest0-21swapper/021:40:250
2576500993224,6cyclictest311ktimers/220:50:222
2576500993223,6cyclictest311ktimers/222:40:292
2576500993223,6cyclictest0-21swapper/223:10:292
2576500993223,6cyclictest0-21swapper/221:10:012
257650099322,11cyclictest32-21ksoftirqd/222:10:022
2576497993224,5cyclictest2595873-21/usr/sbin/munin21:00:281
257649799322,3cyclictest0-21swapper/121:50:021
2576497993222,6cyclictest0-21swapper/100:15:201
2576497993214,9cyclictest0-21swapper/122:50:011
2576500993123,4cyclictest0-21swapper/200:10:022
2576500993121,6cyclictest311ktimers/221:00:052
2576497993122,4cyclictest0-21swapper/119:40:171
2576497993119,8cyclictest0-21swapper/122:15:211
2576497993119,8cyclictest0-21swapper/122:15:211
2576497993116,10cyclictest0-21swapper/123:30:211
2576500993019,7cyclictest311ktimers/223:00:172
2576500993019,7cyclictest311ktimers/223:00:172
2576500993017,6cyclictest30-21rcuc/223:45:112
257649799302,17cyclictest2589870-21/usr/sbin/munin20:25:201
257649799302,17cyclictest2589870-21/usr/sbin/munin20:25:191
2576497993018,8cyclictest0-21swapper/119:50:191
257649799301,3cyclictest0-21swapper/122:00:001
2576500992916,10cyclictest30-21rcuc/223:40:282
2576497992921,4cyclictest0-21swapper/123:50:171
2576497992920,6cyclictest0-21swapper/100:15:011
2576497992820,4cyclictest0-21swapper/122:20:201
2576497992818,5cyclictest0-21swapper/123:15:271
2576497992718,5cyclictest0-21swapper/123:25:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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