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2026-06-22 - 08:37

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 Mon Jun 22, 2026 00:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
82362221820,2sleep3481ktimers/322:20:303
629833999183,6cyclictest685953-21kworker/u8:1+flush-8:020:10:360
6396302710,1sleep1639635-21tr19:15:361
629837997060,7cyclictest800430-21latency_hist22:00:011
629837997060,7cyclictest800430-21latency_hist22:00:001
629833996457,5cyclictest805031-21kworker/u8:3+flush-8:023:45:360
629837996253,6cyclictest1704890-21systemd-journal19:10:311
629833996250,9cyclictest651614-21latency_hist19:30:000
629833996053,5cyclictest685953-21kworker/u8:1+flush-8:020:40:320
629833995949,8cyclictest756136-21/usr/sbin/munin21:15:370
629833995851,4cyclictest528357-21kworker/u8:0+flush-8:021:00:240
629833995751,4cyclictest860350-21kworker/u8:1+flush-8:023:40:360
629833995746,8cyclictest675730-21ntpq19:50:350
629841995545,7cyclictest1704890-21systemd-journal21:00:012
629833995545,8cyclictest899022-21ntpq23:35:330
629833995544,8cyclictest3992462-21kworker/u8:1+flush-8:019:40:360
629837995448,4cyclictest670826-21ntpq19:45:341
629833995449,4cyclictest805031-21kworker/u8:3+flush-8:022:15:370
629837995342,8cyclictest839397-21ntpq22:35:331
629833995347,4cyclictest943640-21kworker/u8:2+events_unbound00:25:250
629833995346,5cyclictest745647-21kworker/u8:1+flush-8:021:05:300
629833995344,7cyclictest528357-21kworker/u8:0+flush-8:020:35:390
629833995245,5cyclictest943640-21kworker/u8:2+flush-8:000:30:360
629837995135,11cyclictest1704890-21systemd-journal23:36:031
629833995144,4cyclictest860350-21kworker/u8:1+events_unbound23:05:210
629833995142,7cyclictest1704890-21systemd-journal20:25:010
629837995044,3cyclictest860350-21kworker/u8:1+events_unbound00:35:361
629833995040,8cyclictest958497-21ntpq00:35:350
629833995040,8cyclictest918740-21ntpq23:55:320
629833995040,7cyclictest670712-21kworker/u8:2+flush-8:022:30:230
629833994945,3cyclictest860350-21kworker/u8:1+events_unbound23:10:360
629833994939,8cyclictest766325-21diskstats21:25:250
629837994843,4cyclictest670712-21kworker/u8:2+flush-8:020:55:371
629837994840,6cyclictest874982-21latency_hist23:15:011
629833994844,3cyclictest725695-21kworker/u8:3+flush-8:021:40:380
629833994640,4cyclictest805031-21kworker/u8:3+events_unbound23:20:330
629833994637,6cyclictest890047-21latency_hist23:30:010
629837994537,6cyclictest810797-21/usr/sbin/munin22:10:371
629837994535,8cyclictest670712-21kworker/u8:2+flush-8:020:50:361
629833994536,7cyclictest789624-21ntpq21:45:320
629833994536,6cyclictest691678-21latency_hist20:10:020
629841994438,4cyclictest821116-21kworker/u8:0+flush-8:022:50:352
629833994439,3cyclictest860350-21kworker/u8:1+events_unbound00:10:390
629833994438,4cyclictest725695-21kworker/u8:3+events_unbound21:20:220
629833994437,5cyclictest740103-21ntpq20:55:320
629833994437,5cyclictest528357-21kworker/u8:0+flush-8:019:55:350
629833994436,6cyclictest598327-21kworker/u8:3+events_unbound19:20:360
629833994436,6cyclictest3992462-21kworker/u8:1+events_unbound19:15:430
629833994433,7cyclictest670712-21kworker/u8:2+events_unbound20:25:200
629841994332,9cyclictest954382-21awk00:34:592
629833994337,4cyclictest821116-21kworker/u8:0+events_unbound22:45:220
629833994337,4cyclictest670712-21kworker/u8:2+events_unbound22:35:390
629833994336,5cyclictest805031-21kworker/u8:3+events_unbound22:20:340
629837994235,5cyclictest900204-21apt-get23:40:191
629833994235,5cyclictest860350-21kworker/u8:1+events_unbound23:00:220
629841994133,6cyclictest1704890-21systemd-journal20:10:002
629837994133,6cyclictest670712-21kworker/u8:2+flush-8:021:05:321
629837994133,5cyclictest1704890-21systemd-journal22:20:311
629833994137,3cyclictest943640-21kworker/u8:2+flush-8:000:20:360
629833994135,4cyclictest725695-21kworker/u8:3+flush-8:020:50:310
629833994133,6cyclictest3992462-21kworker/u8:1+flush-8:019:35:390
629833994132,6cyclictest914712-21latency_hist23:55:000
629841994034,4cyclictest913861-21kworker/u8:0+flush-8:000:13:092
629841994025,13cyclictest874582-21unixbench_singl23:10:382
629833994036,3cyclictest528357-21kworker/u8:0+events_unbound19:30:380
629837993930,7cyclictest869129-21ntpq23:05:331
629837993926,8cyclictest1704890-21systemd-journal22:40:321
629841993822,14cyclictest895469-21cpuspeed_turbos23:35:232
629837993832,4cyclictest944738-21/usr/sbin/munin00:25:331
629837993831,5cyclictest938656-21ntpq00:15:351
629837993831,5cyclictest741304-21/usr/sbin/munin21:00:321
629833993834,3cyclictest528357-21kworker/u8:0+events_unbound20:30:370
629833993831,5cyclictest745647-21kworker/u8:1+flush-8:021:10:370
629833993828,8cyclictest774759-21ntpq21:30:320
62938123824,8sleep30-21swapper/319:06:403
62984199372,13cyclictest751227-21apt-get21:10:212
629837993732,3cyclictest651633-21gpgv19:30:001
629837993731,4cyclictest943640-21kworker/u8:2+flush-8:000:23:141
629837993731,4cyclictest909775-21latency_hist23:50:011
629837993729,6cyclictest696862-21apt-get20:15:181
629833993733,3cyclictest919715-21kworker/u8:3+flush-8:000:05:410
629833993732,3cyclictest821116-21kworker/u8:0+events_unbound22:55:330
62984199362,14cyclictest761119-21apt-get21:20:222
629841993621,13cyclictest760835-21latency_hist21:20:002
629841993617,17cyclictest1704890-21systemd-journal19:39:322
629837993628,6cyclictest879242-21ntpq23:15:321
629837993528,5cyclictest642046-21apt-get19:20:201
629837993526,7cyclictest815759-21/usr/sbin/munin22:15:301
629833993531,3cyclictest670712-21kworker/u8:2+events_unbound20:15:370
629833993528,5cyclictest528357-21kworker/u8:0+events_unbound19:10:350
6293642353,9sleep10-21swapper/119:06:301
629841993424,8cyclictest1704890-21systemd-journal22:45:312
629841993417,15cyclictest651972-21cat19:30:022
629837993428,4cyclictest865045-21latency_hist23:05:011
629837993427,5cyclictest913870-21ntpq23:50:351
629837993426,6cyclictest701791-21/usr/sbin/munin20:20:361
629837993426,6cyclictest661701-21cron19:40:011
629837993425,7cyclictest924953-21apt-get00:05:191
629837993422,9cyclictest855163-21turbostat.cron22:55:001
629837993421,10cyclictest1704890-21systemd-journal22:00:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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