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2026-06-23 - 12:08

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

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.
Unexpectedly long latencies may be caused by SMIs
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 rack2slot7s.osadl.org (updated Tue Jun 23, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1919995995445,6cyclictest2060848-21munin-run00:00:011
1919995995241,7cyclictest1-21systemd23:55:021
1919995995134,12cyclictest1003-21mta-sts-daemon22:30:341
1919995995134,12cyclictest1003-21mta-sts-daemon22:30:341
1919994995143,5cyclictest1999265-21systemd-run22:20:020
1919995994839,5cyclictest1-21systemd22:55:011
1919994994838,7cyclictest2021169-21aten_r2power_cu22:55:200
1919995994634,5cyclictest0-21swapper/123:00:331
1919995994615,13cyclictest1991159-21ntpq22:05:381
1919996994538,3cyclictest0-21swapper/221:45:352
191999599453,29cyclictest2034140-21ssh23:15:301
1919995994526,8cyclictest1978752-21ssh21:45:291
1919994994432,8cyclictest1991463-21timerandwakeup22:05:430
1919996994335,5cyclictest1945469-21cron20:35:012
1919996994335,5cyclictest1937997-21systemd-run20:10:012
1919996994334,6cyclictest2048580-21unin-run23:40:022
191999699433,32cyclictest1984833-21ssh21:55:282
1919996994233,6cyclictest420-21avahi-daemon00:20:192
1919995994231,4cyclictest0-21swapper/100:10:361
1919995994227,9cyclictest1929910-21ntpq19:40:301
1919995994227,9cyclictest1929910-21ntpq19:40:301
1919995994214,9cyclictest1975637-21ntpq21:40:301
1919995994212,9cyclictest1920851-21ntpq19:10:291
1919995994211,10cyclictest2082479-21munin-run00:35:011
1919994994233,7cyclictest1921491-21sh19:15:010
1919996994133,4cyclictest0-21swapper/221:20:432
1919995994135,3cyclictest0-21swapper/120:20:011
1919995994134,3cyclictest0-21swapper/121:30:231
1919995994131,6cyclictest0-21swapper/120:00:011
1919995994130,7cyclictest2023867-21idleruntime-cro23:00:011
1919995994117,9cyclictest1939480-21idleruntime-cro20:15:011
1919995994115,8cyclictest1950996-21ps20:50:351
1919995994115,6cyclictest2015743-21ntpq22:45:331
191999499412,33cyclictest2046566-21ssh23:35:330
1919996994032,5cyclictest1-21systemd23:20:012
191999599403,29cyclictest1955985-21diskmemload21:35:301
1919995994030,5cyclictest0-21swapper/123:15:011
1919995994024,10cyclictest1941939-21ntpq20:20:351
1919995994015,9cyclictest1966153-21missed_timers21:25:261
1919995994015,7cyclictest1953868-21ntpq21:00:301
1919995994013,9cyclictest2083689-21processes00:35:371
1919995994013,9cyclictest1984323-21aten_r2power_vo21:55:191
1919995994013,12cyclictest1962622-21aten_r2power_fr21:20:201
191999499400,35cyclictest1984962-21ssh21:55:320
1919996993931,5cyclictest2085670-21latency_hist00:40:022
1919996993930,6cyclictest420-21avahi-daemon23:56:082
191999699392,5cyclictest171rcu_preempt21:25:292
1919995993930,4cyclictest0-21swapper/121:15:241
1919995993929,6cyclictest439-21systemd-logind19:25:021
1919995993928,8cyclictest1935795-21needreboot20:00:291
1919995993913,8cyclictest1958487-21sh21:13:121
1919995993913,8cyclictest1946356-21ntpq20:35:281
191999499394,25cyclictest151ktimers/019:35:320
1919994993931,5cyclictest2080208-21latency00:30:260
1919994993931,5cyclictest1-21systemd21:25:010
1919994993916,20cyclictest12750irq/33-eth021:10:290
191999499391,15cyclictest1959121-21kworker/u8:7+rpciod21:45:330
1919996993831,4cyclictest1959097-21munin-plugin-st21:15:012
1919996993831,3cyclictest0-21swapper/222:30:002
1919996993830,5cyclictest163119-21cups-browsed21:32:402
191999599389,11cyclictest1938096-21latency_hist20:10:021
1919995993813,9cyclictest2079575-21grep00:30:021
1919995993813,9cyclictest1952178-21sed20:55:271
1919995993813,14cyclictest2040410-21ssh23:25:331
1919994993832,4cyclictest2060868-21awk00:00:010
1919996993730,3cyclictest0-21swapper/219:40:332
1919996993730,3cyclictest0-21swapper/219:40:332
1919996993729,5cyclictest1959741-21cut21:15:232
1919996993729,5cyclictest0-21swapper/220:50:012
1919996993729,3cyclictest0-21swapper/223:25:202
1919996993728,6cyclictest1990634-21fschecks_count22:05:252
1919996993725,8cyclictest2052537-21missed_timers23:45:262
1919995993729,4cyclictest0-21swapper/122:15:031
1919995993727,6cyclictest163119-21cups-browsed23:42:121
1919995993725,7cyclictest2027369-21aten_r2power_fr23:05:201
1919995993723,9cyclictest1944956-21ntpq20:30:351
1919995993721,12cyclictest2071211-21ntpq00:15:331
1919995993720,12cyclictest2012574-21ntpq22:40:291
1919995993713,8cyclictest1955371-21ntpq21:05:311
1919995993710,11cyclictest2003014-21awk22:25:211
1919996993630,3cyclictest0-21swapper/223:35:012
1919996993628,5cyclictest2023870-21idleruntime-cro23:00:012
1919996993626,8cyclictest1940283-21needreboot20:15:272
1919995993630,3cyclictest0-21swapper/119:55:021
1919995993625,7cyclictest265-21systemd-journal22:00:031
1919995993622,8cyclictest1931405-21ntpq19:45:311
1919995993621,12cyclictest1925376-21ntpq19:25:281
1919995993615,8cyclictest2065553-21sed00:05:421
1919995993613,7cyclictest2051880-21ssh23:45:061
1919995993611,8cyclictest2062774-21ssh00:01:201
1919995993611,13cyclictest2039289-21latency_hist23:25:031
1919994993631,3cyclictest2008468-21ssh22:35:000
1919994993631,3cyclictest2008468-21ssh22:35:000
1919994993630,3cyclictest0-21swapper/000:15:320
1919994993629,4cyclictest1943021-21fschecks_time20:25:240
1919994993628,5cyclictest163119-21cups-browsed22:35:340
1919996993529,3cyclictest0-21swapper/221:00:012
1919996993526,5cyclictest0-21swapper/200:00:302
1919995993524,5cyclictest0-21swapper/121:50:211
1919995993522,8cyclictest1922347-21ntpq19:15:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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