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2026-08-14 - 21:05

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 Fri Aug 14, 2026 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
78827998774,10cyclictest231ktimers/107:25:011
7882799677,39cyclictest0-21swapper/111:55:011
78829995910,13cyclictest126929-21/usr/sbin/munin11:50:182
78827995544,6cyclictest124194-21munin-plugin-st11:35:011
7882799548,13cyclictest22-21rcuc/110:45:011
78829995240,8cyclictest1283-21cron07:15:002
78825995244,4cyclictest167350irq/118-8000000.ethernet-tx010:20:260
78827995136,10cyclictest0-21swapper/112:20:301
7882599511,40cyclictest0-21swapper/009:00:120
78825994941,4cyclictest167350irq/118-8000000.ethernet-tx009:35:260
78827994827,17cyclictest231ktimers/108:55:151
78825994841,4cyclictest99532-21munin-plugin-st09:10:000
7882599482,42cyclictest84942-21sed07:40:270
78825994740,4cyclictest167350irq/118-8000000.ethernet-tx012:05:200
7882599471,43cyclictest0-21swapper/012:20:130
7882599468,22cyclictest131ktimers/012:05:010
78825994636,6cyclictest0-21swapper/007:15:310
78829994434,6cyclictest124133-21grep11:30:272
7882999441,34cyclictest30-21rcuc/207:50:272
7882599443,5cyclictest79631-21munin-run07:15:010
7882599443,5cyclictest128074-21meminfo11:55:230
78829994330,8cyclictest0-21swapper/208:25:292
78829994330,8cyclictest0-21swapper/208:25:292
78829994329,9cyclictest0-21swapper/207:15:292
7882799436,3cyclictest0-21swapper/109:15:011
78825994337,3cyclictest0-21swapper/010:10:200
78825994336,4cyclictest167350irq/118-8000000.ethernet-tx012:15:280
78825994335,5cyclictest90897-21grep08:15:320
78825994332,8cyclictest0-21swapper/008:30:290
78825994330,10cyclictest0-21swapper/011:05:270
7882599431,38cyclictest82231-21tail07:25:310
78829994229,6cyclictest96899-21grep08:50:292
78829994226,10cyclictest0-21swapper/211:45:212
78829994224,11cyclictest0-21swapper/208:40:272
78827994234,5cyclictest116406-21unixbench_multi10:45:281
78827994234,5cyclictest116406-21unixbench_multi10:45:281
78827994230,9cyclictest91004-21sendmail08:20:001
78827994225,8cyclictest80645-21grep07:15:291
78825994235,5cyclictest113137-21munin-plugin-st10:30:000
78825994235,4cyclictest0-21swapper/008:45:220
78825994233,6cyclictest274-21systemd-journal09:50:000
78825994231,7cyclictest0-21swapper/007:45:290
7882599422,4cyclictest89565-21df_inode08:10:180
7882599422,37cyclictest0-21swapper/012:25:210
78825994222,18cyclictest0-21swapper/009:15:160
78829994135,3cyclictest0-21swapper/208:30:292
78829994125,10cyclictest0-21swapper/207:20:192
78827994130,6cyclictest131695-21grep12:15:291
78827994128,8cyclictest0-21swapper/107:50:281
78827994126,10cyclictest0-21swapper/110:50:281
78827994114,9cyclictest118407-21/usr/sbin/munin11:00:191
78825994136,2cyclictest0-21swapper/011:20:020
78825994134,4cyclictest0-21swapper/012:10:270
78825994134,4cyclictest0-21swapper/011:25:160
78825994134,4cyclictest0-21swapper/008:05:270
78825994133,5cyclictest0-21swapper/007:30:230
78825994133,5cyclictest0-21swapper/007:30:220
78825994127,10cyclictest0-21swapper/008:55:000
78825994126,10cyclictest0-21swapper/008:45:020
78825994125,14cyclictest0-21swapper/008:20:180
78825994124,15cyclictest0-21swapper/007:55:210
7882599411,3cyclictest0-21swapper/011:40:210
78829994030,5cyclictest0-21swapper/211:29:592
78829994029,4cyclictest167550irq/134-8000000.ethernet-tx210:20:292
78829994028,8cyclictest311ktimers/211:20:112
78829994023,9cyclictest0-21swapper/211:05:012
7882999401,31cyclictest121301-21kernelversion11:15:232
78827994024,8cyclictest0-21swapper/110:55:291
78827994014,13cyclictest0-21swapper/109:10:011
78825994033,4cyclictest167350irq/118-8000000.ethernet-tx009:50:120
78825994030,5cyclictest102608-21if_eth109:25:250
78825994030,5cyclictest102608-21if_eth109:25:250
7882599402,5cyclictest109416-21memory10:05:260
7882599402,5cyclictest109416-21memory10:05:260
7882599401,37cyclictest0-21swapper/010:39:590
7882999391,3cyclictest0-21swapper/209:05:022
78827993933,3cyclictest167450irq/126-8000000.ethernet-tx110:25:151
78827993930,5cyclictest114715-21grep10:35:281
78827993929,7cyclictest88368-21grep08:00:301
78827993928,8cyclictest129807-21phc2sys12:05:271
78827993925,11cyclictest231ktimers/111:05:101
78827993922,12cyclictest231ktimers/111:35:141
78825993933,4cyclictest0-21swapper/010:50:180
78825993933,4cyclictest0-21swapper/009:40:190
78825993933,4cyclictest0-21swapper/008:55:280
78825993933,3cyclictest81619-21munin-run07:25:010
78825993933,3cyclictest0-21swapper/010:45:200
78825993933,3cyclictest0-21swapper/010:45:200
78825993929,7cyclictest118710-21memory11:00:270
7882599391,4cyclictest117608-21df10:55:180
7882599391,3cyclictest120347-21irqstats11:10:240
7882599391,3cyclictest120347-21irqstats11:10:230
7882599391,36cyclictest0-21swapper/008:25:290
7882599391,36cyclictest0-21swapper/008:25:290
78829993825,9cyclictest0-21swapper/207:45:302
78827993830,4cyclictest0-21swapper/107:50:011
78827993829,5cyclictest14-21rcu_preempt08:05:291
78827993829,5cyclictest0-21swapper/109:45:291
78827993828,5cyclictest0-21swapper/112:35:281
78827993826,7cyclictest0-21swapper/111:40:271
78827993825,9cyclictest0-21swapper/107:10:211
7882799381,4cyclictest0-21swapper/108:40:011
78825993821,15cyclictest0-21swapper/012:35:140
7882599381,35cyclictest0-21swapper/007:50:140
7882599381,2cyclictest0-21swapper/011:55:000
78829993726,6cyclictest0-21swapper/210:50:282
78829993725,9cyclictest0-21swapper/211:00:012
78829993723,10cyclictest0-21swapper/210:35:282
7882799372,28cyclictest0-21swapper/109:25:151
7882799372,28cyclictest0-21swapper/109:25:151
78827993715,17cyclictest231ktimers/109:00:111
7882799371,33cyclictest1653-21lldpd08:10:131
7882799371,30cyclictest0-21swapper/108:40:251
78825993730,4cyclictest134239-21grep12:30:280
78825993730,4cyclictest0-21swapper/011:20:120
7882599371,34cyclictest0-21swapper/010:40:160
78829993629,4cyclictest111439-21sendmail10:20:002
78829993625,4cyclictest87521-21unixbench_multi07:55:292
7882999361,29cyclictest0-21swapper/209:25:272
7882999361,29cyclictest0-21swapper/209:25:262
78827993628,5cyclictest0-21swapper/110:30:151
78827993626,5cyclictest0-21swapper/109:35:291
78827993626,5cyclictest0-21swapper/108:30:011
78827993626,5cyclictest0-21swapper/108:30:011
78827993622,9cyclictest0-21swapper/112:30:191
78825993631,2cyclictest0-21swapper/009:35:010
78825993621,13cyclictest0-21swapper/011:31:190
7882599361,3cyclictest0-21swapper/011:45:130
7882599361,2cyclictest87822-21apt-get08:00:130
7882599361,2cyclictest110797-21apt-get10:15:120
7882599361,2cyclictest0-21swapper/009:55:240
7882599361,28cyclictest125173-21latency_hist11:40:010
78829993529,3cyclictest0-21swapper/212:25:242
78829993524,8cyclictest0-21swapper/208:20:302
78829993520,7cyclictest0-21swapper/212:05:302
7882999351,28cyclictest0-21swapper/209:05:222
7882999351,27cyclictest116492-21sshd10:47:322
7882999351,27cyclictest116492-21sshd10:47:322
7882799356,11cyclictest24-21ksoftirqd/109:20:021
78827993527,4cyclictest0-21swapper/111:15:281
78827993526,5cyclictest0-21swapper/111:55:271
78827993524,7cyclictest0-21swapper/111:45:291
7882799351,28cyclictest0-21swapper/107:40:141
7882599351,9cyclictest0-21swapper/007:10:010
78825993519,14cyclictest0-21swapper/008:35:280
78825993516,17cyclictest0-21swapper/010:00:130
78829993426,4cyclictest0-21swapper/209:40:002
78829993421,6cyclictest0-21swapper/209:55:302
7882999341,27cyclictest0-21swapper/212:15:162
78827993424,7cyclictest95510-21/usr/sbin/munin08:45:211
78827993423,7cyclictest0-21swapper/110:20:291
7882799341,27cyclictest0-21swapper/107:30:301
7882799341,27cyclictest0-21swapper/107:30:301
78827993412,14cyclictest231ktimers/108:30:151
7882599341,31cyclictest0-21swapper/010:30:170
7882599341,31cyclictest0-21swapper/007:35:160
7882599341,27cyclictest100552-21latency_hist09:15:000
78829993325,5cyclictest120084-21/usr/sbin/munin11:10:302
78829993325,5cyclictest120084-21/usr/sbin/munin11:10:302
78829993323,6cyclictest0-21swapper/209:40:282
78829993322,8cyclictest311ktimers/210:40:292
7882799335,4cyclictest0-21swapper/107:40:011
78827993323,6cyclictest0-21swapper/112:25:281
78827993321,8cyclictest0-21swapper/108:20:291
7882799331,7cyclictest0-21swapper/109:25:011
78827993316,10cyclictest0-21swapper/112:00:271
7882599331,29cyclictest101931-21ptp4l09:20:270
78829993225,6cyclictest311ktimers/210:05:002
78829993225,4cyclictest167550irq/134-8000000.ethernet-tx208:00:162
7882999322,4cyclictest124917-21unixbench_multi11:35:282
78829993224,4cyclictest0-21swapper/208:40:002
78829993222,5cyclictest0-21swapper/210:30:112
78829993218,9cyclictest0-21swapper/211:40:272
7882999321,4cyclictest91006-21http08:20:012
7882999321,26cyclictest0-21swapper/212:10:172
78827993223,6cyclictest107956-21grep09:55:301
78827993223,5cyclictest123287-21grep11:25:281
78827993222,6cyclictest0-21swapper/107:55:301
78827993220,8cyclictest0-21swapper/109:50:201
7882799321,25cyclictest0-21swapper/110:10:121
78829993123,5cyclictest102161-21munin-plugin-st09:25:002
78829993122,6cyclictest1660-21snmpd07:30:342
78829993122,6cyclictest1660-21snmpd07:30:342
78829993121,5cyclictest0-21swapper/207:25:332
78829993120,7cyclictest0-21swapper/212:35:282
78829993120,5cyclictest0-21swapper/210:10:292
78829993119,8cyclictest0-21swapper/208:10:002
78829993118,8cyclictest0-21swapper/208:45:202
7882999311,28cyclictest0-21swapper/209:45:212
78827993121,7cyclictest130865-21grep12:10:291
78827993120,7cyclictest0-21swapper/111:10:291
78827993120,7cyclictest0-21swapper/111:10:291
78829993020,6cyclictest0-21swapper/212:20:292
78829993019,8cyclictest90139-21apt08:15:002
78829993019,6cyclictest311ktimers/212:30:282
78829993018,7cyclictest0-21swapper/209:50:292
78827993020,7cyclictest0-21swapper/111:20:191
7882799301,24cyclictest832-21systemd-network09:33:151
7882799301,24cyclictest0-21swapper/107:25:221
78829992918,7cyclictest0-21swapper/212:00:192
78829992918,7cyclictest0-21swapper/209:00:012
7882999291,23cyclictest1650-21lldpd07:35:562
78827992924,3cyclictest108856-21unixbench_singl10:00:281
7882799291,2cyclictest0-21swapper/110:10:011
7882799291,2cyclictest0-21swapper/110:10:011
7882799291,26cyclictest96350-21/usr/sbin/munin08:50:171
78829992820,6cyclictest0-21swapper/210:25:262
78829992819,5cyclictest0-21swapper/211:05:272
78829992814,9cyclictest311ktimers/207:40:162
78827992819,6cyclictest0-21swapper/110:15:271
7882799281,3cyclictest0-21swapper/107:10:011
78829992716,7cyclictest0-21swapper/210:05:212
78829992716,7cyclictest0-21swapper/210:05:202
78829992715,6cyclictest311ktimers/211:55:102
78829992617,5cyclictest0-21swapper/209:10:302
78829992615,7cyclictest0-21swapper/209:15:302
78827992513,10cyclictest231ktimers/109:40:131
78829992313,6cyclictest0-21swapper/209:30:282
78829991813,3cyclictest78786-21latency_hist07:10:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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