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2026-05-14 - 09:27

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 all highest latencies:
System rackeslot6s.osadl.org (updated Thu May 14, 2026 00:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2345749998742,5cyclictest2367260-21munin-plugin-st21:15:001
2345749996922,4cyclictest2393163-21/usr/sbin/munin23:45:201
234574799691,63cyclictest0-21swapper/022:55:120
2345747996821,32cyclictest0-21swapper/022:40:010
2345747996357,2cyclictest0-21swapper/022:20:020
234574799631,57cyclictest0-21swapper/023:15:120
2345747995932,22cyclictest0-21swapper/020:45:170
2345747995738,13cyclictest131ktimers/023:50:130
2345747995725,28cyclictest0-21swapper/021:00:290
2345747995725,28cyclictest0-21swapper/021:00:290
2345753995649,4cyclictest311ktimers/221:50:022
234574799569,4cyclictest0-21swapper/019:30:140
234574799569,4cyclictest0-21swapper/019:30:130
2345747995647,6cyclictest2368103-21sh21:20:000
2345747995611,13cyclictest15-21rcuc/023:00:020
2345753995543,7cyclictest0-21swapper/223:25:002
2345753995442,8cyclictest2362116-21munin-plugin-st20:45:002
2345753995429,17cyclictest311ktimers/222:45:012
234574799547,21cyclictest12-21ksoftirqd/021:55:010
2345747995444,5cyclictest0-21swapper/019:55:120
2345747995444,5cyclictest0-21swapper/019:55:110
2345747995337,12cyclictest2357881-21sendmail20:20:000
2345747995311,39cyclictest15-21rcuc/021:55:250
2345747995241,8cyclictest2353663-21munin-plugin-st19:55:000
234574799522,17cyclictest12-21ksoftirqd/019:20:020
234574799522,17cyclictest12-21ksoftirqd/019:20:010
2345753995142,5cyclictest2351132-21run-parts19:39:592
234574799514,9cyclictest0-21swapper/000:05:010
234574999509,21cyclictest14-21rcu_preempt00:00:011
2345747995042,5cyclictest167350irq/118-8000000.ethernet-tx000:10:180
2345747995042,5cyclictest0-21swapper/023:55:110
2345747995041,5cyclictest167350irq/118-8000000.ethernet-tx023:10:160
2345747995041,5cyclictest167350irq/118-8000000.ethernet-tx023:10:160
234574799504,14cyclictest12-21ksoftirqd/022:50:000
234574799502,38cyclictest2393768-21head23:45:300
2345747994945,3cyclictest0-21swapper/020:55:100
234574799492,9cyclictest2386863-21apt-get23:10:010
234574799485,3cyclictest0-21swapper/021:10:010
2345747994840,4cyclictest167350irq/118-8000000.ethernet-tx020:35:170
2345747994840,4cyclictest167350irq/118-8000000.ethernet-tx020:35:170
2345753994737,6cyclictest2354396-21grep19:55:282
2345753994737,6cyclictest2354396-21grep19:55:282
2345747994739,5cyclictest2378424-21munin-plugin-st22:20:010
234574799472,4cyclictest0-21swapper/022:30:010
234574799472,4cyclictest0-21swapper/022:30:010
2345753994641,2cyclictest0-21swapper/219:20:012
2345753994641,2cyclictest0-21swapper/219:20:012
234574999461,8cyclictest0-21swapper/123:30:021
2345747994633,7cyclictest2354865-21sh20:00:210
2345747994610,34cyclictest15-21rcuc/022:30:190
2345753994534,7cyclictest2372390-21grep21:40:282
2345749994534,8cyclictest2402248-21sendmail00:40:001
2345747994541,2cyclictest0-21swapper/020:20:170
2345747994538,4cyclictest0-21swapper/022:35:120
2345747994533,8cyclictest0-21swapper/019:50:010
2345747994528,12cyclictest0-21swapper/023:20:260
2345747994527,12cyclictest131ktimers/020:30:110
234574799452,4cyclictest2351272-21latency_hist19:40:010
234574799451,42cyclictest0-21swapper/020:40:390
234574999441,30cyclictest2400451-21unixbench_multi00:25:281
2345747994436,5cyclictest131ktimers/021:35:170
2345747994436,5cyclictest0-21swapper/019:10:130
2345747994434,6cyclictest2363609-21sendmail_mailst20:50:270
2345747994434,6cyclictest2363609-21sendmail_mailst20:50:270
2345753994327,9cyclictest0-21swapper/222:15:022
2345753994324,14cyclictest311ktimers/221:20:132
2345753994321,16cyclictest2390534-21/usr/sbin/munin23:30:182
234574999438,23cyclictest2399075-21/usr/sbin/munin00:20:181
2345749994333,5cyclictest0-21swapper/120:10:281
2345749994333,5cyclictest0-21swapper/120:10:281
2345749994331,6cyclictest0-21swapper/119:45:291
234574999431,33cyclictest0-21swapper/122:05:281
2345749994311,13cyclictest2365581-21cat21:05:001
2345749994311,13cyclictest2365581-21cat21:05:001
2345747994336,4cyclictest20850irq/208-8000000.ethernet21:45:200
2345747994331,9cyclictest2399647-21grep00:20:280
2345747994328,11cyclictest0-21swapper/023:40:250
234574799432,39cyclictest0-21swapper/023:30:160
2345753994235,4cyclictest2392039-21apt-get23:40:002
2345753994211,4cyclictest0-21swapper/221:55:212
234574999424,5cyclictest0-21swapper/120:00:011
234574999424,5cyclictest0-21swapper/120:00:011
2345749994237,3cyclictest2385169-21latency_hist23:00:011
2345749994232,4cyclictest0-21swapper/119:54:591
234574999421,6cyclictest0-21swapper/120:55:021
234574999421,6cyclictest0-21swapper/120:55:021
234574799424,10cyclictest12-21ksoftirqd/000:20:010
2345747994225,14cyclictest15-21rcuc/019:40:150
2345747994225,11cyclictest0-21swapper/023:25:250
234574799422,38cyclictest0-21swapper/000:30:210
234574799421,38cyclictest2383986-21memory22:50:230
2345753994128,11cyclictest311ktimers/222:20:142
2345753994122,13cyclictest311ktimers/221:00:152
2345753994122,13cyclictest311ktimers/221:00:142
2345749994131,7cyclictest2356198-21munin-plugin-st20:10:001
234574799414,6cyclictest2377658-21grep22:15:010
234574799413,5cyclictest2369419-21irqstats21:25:220
2345747994133,4cyclictest2356903-21/usr/sbin/munin20:10:270
2345747994133,4cyclictest2356903-21/usr/sbin/munin20:10:260
2345747994132,5cyclictest0-21swapper/000:35:110
2345753994025,10cyclictest0-21swapper/200:20:272
2345753994022,14cyclictest311ktimers/200:15:102
2345753994022,12cyclictest0-21swapper/219:45:002
2345749994031,5cyclictest0-21swapper/119:15:271
2345749994031,5cyclictest0-21swapper/119:15:271
2345749994027,7cyclictest0-21swapper/120:00:301
2345747994033,4cyclictest0-21swapper/000:25:160
234574799401,2cyclictest0-21swapper/020:10:000
2345753993926,8cyclictest0-21swapper/223:05:272
2345749993931,5cyclictest2368962-21munin-plugin-st21:25:001
2345749993931,5cyclictest2359576-21munin-plugin-st20:30:001
2345749993929,5cyclictest0-21swapper/122:15:011
2345749993927,7cyclictest2362900-21grep20:45:301
2345749993926,8cyclictest0-21swapper/121:15:291
234574999391,6cyclictest0-21swapper/122:35:001
234574799392,2cyclictest0-21swapper/020:30:020
234575399385,28cyclictest2388240-21if_eth123:15:232
2345753993827,5cyclictest0-21swapper/220:35:202
2345753993827,5cyclictest0-21swapper/220:35:202
2345753993825,8cyclictest311ktimers/219:10:112
234575399381,28cyclictest2389476-21kworker/u8:1+flush-179:9623:45:482
2345749993829,5cyclictest2397122-21grep00:05:271
2345749993829,5cyclictest2397122-21grep00:05:271
2345749993827,8cyclictest2371579-21sendmail21:40:001
2345749993827,8cyclictest1283-21cron23:45:011
2345749993812,23cyclictest22-21rcuc/123:40:011
2345747993832,3cyclictest0-21swapper/021:20:270
234574799381,3cyclictest2376007-21apt-get22:05:140
2345753993725,7cyclictest2380051-21grep22:25:282
2345753993725,7cyclictest2380051-21grep22:25:272
2345753993724,9cyclictest0-21swapper/221:10:002
2345753993724,9cyclictest0-21swapper/220:55:252
2345753993724,8cyclictest2392323-21/usr/sbin/munin23:40:172
2345753993722,10cyclictest0-21swapper/220:30:192
2345749993730,5cyclictest2373269-21munin-plugin-st21:50:001
2345749993729,5cyclictest2394637-21cron23:55:001
2345749993729,4cyclictest2351123-21sh19:40:001
2345749993725,8cyclictest0-21swapper/122:20:281
2345749993724,8cyclictest0-21swapper/100:30:291
234574999370,6cyclictest0-21swapper/120:35:001
234574799377,2cyclictest0-21swapper/022:05:010
2345747993731,4cyclictest20850irq/208-8000000.ethernet19:10:010
2345747993730,4cyclictest0-21swapper/021:40:180
2345747993725,6cyclictest0-21swapper/000:05:240
2345747993725,6cyclictest0-21swapper/000:05:240
2345747993724,8cyclictest2349342-21grep19:25:270
234574799371,4cyclictest0-21swapper/019:25:000
234574799371,34cyclictest0-21swapper/023:35:240
234575399363,4cyclictest2389954-21irqstats23:25:222
2345753993628,5cyclictest0-21swapper/223:00:162
2345753993620,10cyclictest311ktimers/219:30:122
2345753993620,10cyclictest311ktimers/219:30:112
2345749993622,9cyclictest0-21swapper/120:40:291
2345747993623,9cyclictest0-21swapper/021:30:290
2345747993623,9cyclictest0-21swapper/021:30:290
234574799361,4cyclictest0-21swapper/021:10:150
2345753993529,4cyclictest2356730-21phc2sys20:10:252
2345753993529,4cyclictest2356730-21phc2sys20:10:242
2345753993527,4cyclictest0-21swapper/200:00:272
2345753993526,5cyclictest2344083-21kworker/u8:2-events_freezable_power_19:10:012
2345753993526,5cyclictest0-21swapper/220:15:292
2345749993528,4cyclictest2389430-21unixbench_singl23:20:301
2345749993527,5cyclictest2348607-21munin-plugin-st19:24:591
2345749993526,4cyclictest0-21swapper/100:10:201
2345749993522,9cyclictest0-21swapper/119:25:261
2345749993522,8cyclictest0-21swapper/123:00:291
2345753993425,4cyclictest0-21swapper/222:15:262
2345753993422,8cyclictest0-21swapper/222:45:292
2345753993422,7cyclictest0-21swapper/223:55:292
2345753993422,7cyclictest0-21swapper/222:05:282
2345753993418,4cyclictest0-21swapper/221:35:022
2345753993418,4cyclictest0-21swapper/221:35:012
234574999345,6cyclictest14-21rcu_preempt21:55:001
2345749993420,10cyclictest0-21swapper/120:25:001
2345753993321,8cyclictest311ktimers/220:05:122
2345753993317,12cyclictest2345742-21cyclictest23:50:132
2345749993324,4cyclictest2383685-21/usr/sbin/munin22:50:151
2345749993323,6cyclictest2345689-21apt-get19:10:041
2345749993323,5cyclictest0-21swapper/100:20:011
2345749993321,6cyclictest0-21swapper/122:35:291
234574999331,3cyclictest0-21swapper/120:20:011
234574999331,26cyclictest2383463-21sshd22:45:441
234575399322,4cyclictest2368071-21users21:15:302
2345753993224,5cyclictest2380907-21grep22:30:282
2345753993221,6cyclictest0-21swapper/220:00:222
2345753993218,10cyclictest311ktimers/200:10:132
2345753993212,13cyclictest311ktimers/222:50:102
2345749993223,5cyclictest0-21swapper/120:35:291
2345749993223,5cyclictest0-21swapper/120:35:281
2345749993220,9cyclictest0-21swapper/123:55:261
2345749993219,8cyclictest0-21swapper/123:10:001
2345753993125,4cyclictest167550irq/134-8000000.ethernet-tx223:10:282
2345753993125,4cyclictest167550irq/134-8000000.ethernet-tx223:10:282
2345753993124,4cyclictest0-21swapper/221:50:192
2345753993120,6cyclictest0-21swapper/222:35:292
2345753993119,9cyclictest0-21swapper/200:05:252
2345753993119,9cyclictest0-21swapper/200:05:252
2345753993113,10cyclictest14-21rcu_preempt19:45:122
234574999315,21cyclictest0-21swapper/121:05:211
234574999312,4cyclictest0-21swapper/123:35:011
2345749993123,4cyclictest0-21swapper/119:10:021
2345749993120,7cyclictest0-21swapper/120:55:271
234574999311,25cyclictest0-21swapper/122:40:251
2345753993021,5cyclictest0-21swapper/221:25:202
2345753993021,4cyclictest0-21swapper/221:10:272
2345753993020,7cyclictest2385161-21cron23:00:012
234575399301,4cyclictest0-21swapper/220:25:152
2345749993022,4cyclictest0-21swapper/119:30:281
2345749993022,4cyclictest0-21swapper/119:30:281
2345749993020,8cyclictest0-21swapper/121:30:011
234574999301,27cyclictest0-21swapper/122:25:231
234574999301,27cyclictest0-21swapper/122:25:221
2345753992923,4cyclictest0-21swapper/222:05:012
2345753992921,6cyclictest1660-21snmpd00:31:432
2345753992919,7cyclictest0-21swapper/200:25:262
2345753992919,5cyclictest0-21swapper/219:25:292
2345753992914,11cyclictest311ktimers/220:50:132
2345753992914,11cyclictest311ktimers/220:50:122
234575399291,2cyclictest0-21swapper/219:55:002
2345749992922,4cyclictest0-21swapper/123:20:001
2345749992920,5cyclictest0-21swapper/122:15:201
234574999291,2cyclictest0-21swapper/121:35:011
234574999291,2cyclictest0-21swapper/121:35:011
234574999281,24cyclictest2375165-21/usr/sbin/munin22:00:271
2345753992720,5cyclictest2402133-21grep00:35:282
2345753992720,3cyclictest0-21swapper/221:35:142
234575399271,24cyclictest0-21swapper/219:21:002
234574999271,24cyclictest0-21swapper/119:41:451
2345749992621,4cyclictest0-21swapper/121:55:431
2345749992615,7cyclictest0-21swapper/121:40:101
234575399252,4cyclictest832-21systemd-network20:21:162
2345753992515,7cyclictest311ktimers/220:45:162
2345749992517,4cyclictest0-21swapper/123:10:231
2345749992517,4cyclictest0-21swapper/123:10:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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