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2026-06-27 - 01:44

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

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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  Intel
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: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Fri Jun 26, 2026 12:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
176182123830,2sleep3451irq_work/307:25:173
20637372950,3chrt75-21kworker/3:1-events12:25:313
18509712950,5chrt0-21swapper/108:55:011
18519742930,2chrt471rcuc/308:55:233
1744767997467,5cyclictest1846010-21kworker/u8:3+flush-8:010:35:271
1744767997467,5cyclictest1846010-21kworker/u8:3+flush-8:010:35:271
20493082640,1sleep02049310-21grep12:10:360
1744767995746,8cyclictest1748716-21ntpq07:10:301
1744767995549,5cyclictest1751768-21kworker/u8:2+flush-8:007:25:351
1744767995548,5cyclictest1846010-21kworker/u8:3+events_unbound09:20:281
1744767995448,5cyclictest1743746-21kworker/u8:1+events_unbound08:25:291
1744767995448,4cyclictest1836319-21kworker/u8:2+flush-8:009:00:331
1744765995443,8cyclictest1911323-21diskstats09:55:190
18169352530,2sleep30-21swapper/308:20:193
1744767995348,4cyclictest1751768-21kworker/u8:2+events_unbound07:45:311
1744767995248,3cyclictest1846010-21kworker/u8:3+flush-8:011:55:451
1744767995247,4cyclictest1743746-21kworker/u8:1+events_unbound07:30:271
1744767995245,3cyclictest1866080-21kworker/u8:0+flush-8:009:30:301
1744765995245,5cyclictest1743746-21kworker/u8:1+flush-8:007:30:270
19239072510,4chrt0-21swapper/310:05:253
1744767995044,4cyclictest1796754-21kworker/u8:0+flush-8:008:20:281
1744767995043,5cyclictest1846010-21kworker/u8:3+flush-8:011:40:311
1744767994945,3cyclictest1959775-21kworker/u8:2+events_unbound10:50:351
1744767994943,4cyclictest1751768-21kworker/u8:2+events_unbound07:35:381
1744767994942,5cyclictest1940749-21kworker/u8:0+flush-8:010:30:281
1744767994937,9cyclictest1959673-21ntpq10:40:271
1744767994844,3cyclictest1796754-21kworker/u8:0+flush-8:008:05:311
1744767994842,4cyclictest1751768-21kworker/u8:2+flush-8:007:15:341
1744767994841,5cyclictest1796754-21kworker/u8:0+flush-8:008:10:311
1744767994840,5cyclictest1866080-21kworker/u8:0+flush-8:009:10:251
1744767994840,5cyclictest1846010-21kworker/u8:3+events_unbound10:55:271
1744765994839,6cyclictest2039769-21latency_hist12:05:000
1744767994742,3cyclictest1846010-21kworker/u8:3+events_unbound11:10:331
1744767994741,4cyclictest1796754-21kworker/u8:0+flush-8:008:45:321
1744767994638,5cyclictest2009717-21kworker/u8:0+flush-8:012:30:291
1744767994538,4cyclictest1846010-21kworker/u8:3+events_unbound08:55:241
1744765994533,9cyclictest1874790-21ntpq09:15:270
1744767994439,4cyclictest2009717-21kworker/u8:0+flush-8:012:20:371
1744767994439,4cyclictest1866080-21kworker/u8:0+events_unbound10:00:271
1744767994438,4cyclictest2053605-21kworker/u8:2+flush-8:012:15:311
1744767994437,5cyclictest1980648-21kworker/u8:1+events_unbound12:00:321
1744767994436,6cyclictest1836319-21kworker/u8:2+flush-8:010:05:311
1744765994435,6cyclictest1766408-21latency_hist07:30:010
1744765994433,9cyclictest1704890-21systemd-journal08:00:010
1744767994337,4cyclictest2009717-21kworker/u8:0+flush-8:012:05:191
1744767994336,5cyclictest1846010-21kworker/u8:3+flush-8:012:10:301
1744767994237,4cyclictest1751768-21kworker/u8:2+events_unbound07:40:351
1744767994234,6cyclictest1866080-21kworker/u8:0+events_unbound09:15:321
1744767994134,5cyclictest1980648-21kworker/u8:1+flush-8:011:30:281
1744767994133,6cyclictest1865839-21latency_hist09:10:011
1744767994133,5cyclictest1990567-21kworker/u8:2+flush-8:011:25:311
1744770994030,8cyclictest2064566-21awk12:29:592
1744770994029,9cyclictest1905667-21apt-get09:50:002
1744767994033,5cyclictest1796754-21kworker/u8:0+flush-8:008:35:301
1744767994032,6cyclictest1756810-21apt-get07:20:191
1744767994032,6cyclictest1756810-21apt-get07:20:181
1744765994031,7cyclictest1846010-21kworker/u8:3+flush-8:010:45:250
1744767993934,4cyclictest1836319-21kworker/u8:2+flush-8:009:35:351
1744767993926,9cyclictest1704890-21systemd-journal10:15:251
1744767993926,9cyclictest1704890-21systemd-journal10:15:241
19076282380,3sleep239-21ksoftirqd/209:50:232
1744770993823,13cyclictest1816625-21aten2_r5power_e08:20:172
1744767993832,4cyclictest1900506-21apt-get09:45:001
1744767993832,4cyclictest1836319-21kworker/u8:2+events_unbound08:40:231
1744767993831,5cyclictest1846010-21kworker/u8:3+flush-8:009:55:351
1744767993829,6cyclictest1704890-21systemd-journal12:35:261
1744770993722,12cyclictest2055017-21aten2_r5power_v12:20:172
1744767993731,5cyclictest2009717-21kworker/u8:0+flush-8:012:25:291
1744765993727,7cyclictest1905891-21cp09:50:000
1744770993624,10cyclictest1806739-21aten2_r5power_e08:10:172
1744770993623,11cyclictest1890907-21aten2_r5power_c09:35:152
1744770993622,12cyclictest2050006-21aten2_r5power_e12:15:172
1744767993629,5cyclictest1846010-21kworker/u8:3+flush-8:009:40:281
1744767993628,5cyclictest1704890-21systemd-journal09:51:251
174477099353,9cyclictest1880960-21apt-get09:25:152
1744770993523,10cyclictest1851434-21cpuspeed_turbos08:55:182
1744770993522,11cyclictest2015416-21aten2_r5power_e11:40:172
174477099352,12cyclictest1811610-21apt-get08:15:162
1744770993516,16cyclictest1806417-21turbostat.cron08:10:012
1744767993531,3cyclictest1846010-21kworker/u8:3+events_unbound11:45:201
1744767993528,5cyclictest1866080-21kworker/u8:0+flush-8:010:10:281
1744765993528,5cyclictest1796754-21kworker/u8:0+flush-8:008:35:360
1744765993528,5cyclictest1704890-21systemd-journal12:19:350
174477099341,12cyclictest1980684-21apt-get11:05:162
1744767993426,6cyclictest1866080-21kworker/u8:0+flush-8:009:25:261
1744765993429,4cyclictest1796754-21kworker/u8:0+flush-8:008:15:320
1744765993426,6cyclictest1704890-21systemd-journal08:35:010
1744765993425,7cyclictest1980648-21kworker/u8:1+flush-8:011:05:220
1744765993425,7cyclictest1930217-21kworker/u8:1+events_unbound10:25:280
1744770993327,4cyclictest2074589-21cp12:40:012
1744765993328,4cyclictest1846010-21kworker/u8:3+flush-8:011:40:330
1744765993328,3cyclictest2032328-21kthreadcore11:55:230
1744765993327,4cyclictest1796754-21kworker/u8:0+events_unbound08:20:230
1744765993323,8cyclictest1791317-21apt-get07:55:010
1744765993322,9cyclictest1704890-21systemd-journal10:15:000
1744770993217,13cyclictest1866166-21aten2_r5power_e09:10:162
1744770993216,13cyclictest0-21swapper/211:15:242
1744770993212,6cyclictest1849096-21seq08:50:262
174477099321,11cyclictest1995553-21apt-get11:20:162
1744767993227,3cyclictest1704890-21systemd-journal08:20:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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