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2025-11-12 - 20:10

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 Wed Nov 12, 2025 12:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15965712800,3chrt0-21swapper/110:05:011
1420322996347,11cyclictest1521175-21kworker/u8:2+flush-8:010:21:211
16141552600,2sleep01420314-21cyclictest10:21:280
16122602600,2sleep3481ktimers/310:21:243
16017272590,2chrt586-21kworker/3:2+mm_percpu_wq10:10:003
1420322995848,7cyclictest1420174-21latency_hist07:10:011
1420325995749,5cyclictest1596598-21gpgv10:05:012
1420319995748,7cyclictest1625585-21ntpq10:31:300
1420322995446,6cyclictest1710784-21latency_hist12:00:011
1420319995346,5cyclictest1521175-21kworker/u8:2+events_unbound09:16:380
1420319995344,7cyclictest1641319-21kworker/u8:2+events_unbound12:11:340
1420322995244,6cyclictest1471374-21ntpq07:56:331
1420322995144,5cyclictest1647068-21journal-offline10:56:221
1420322995143,5cyclictest1425201-21latency_hist07:15:011
1420322995041,6cyclictest1516167-21ntpq08:41:301
1420319994839,6cyclictest1521950-21latency_hist08:50:010
1420322994740,5cyclictest1651992-21journal-offline11:01:231
1420322994740,5cyclictest1596960-21kworker/u8:3+events_unbound10:36:321
1420322994740,5cyclictest1373426-21kworker/u8:2+flush-8:007:15:061
1420319994739,6cyclictest1536025-21ntpq09:01:300
1420319994738,6cyclictest1597323-21diskstats10:06:210
1420319994735,9cyclictest282-21systemd-journal08:55:000
1420322994640,4cyclictest1451655-21kworker/u8:0+flush-8:008:36:211
1420322994639,5cyclictest1675931-21kworker/u8:0+flush-8:012:11:321
1420322994639,5cyclictest1621754-21kworker/u8:1+flush-8:011:51:301
1420322994638,6cyclictest1425224-21kworker/u8:3+flush-8:007:51:301
1420322994636,7cyclictest282-21systemd-journal10:51:441
1420319994637,7cyclictest1680289-21ntpq11:26:280
1420319994435,6cyclictest282-21systemd-journal11:40:000
1420319994434,8cyclictest1555848-21ntpq09:21:310
1420319994434,8cyclictest1555848-21ntpq09:21:310
1420322994338,4cyclictest1425224-21kworker/u8:3+flush-8:008:06:361
1420322994334,7cyclictest1532123-21kworker/u8:3+flush-8:009:21:331
1420322994334,7cyclictest1532123-21kworker/u8:3+flush-8:009:21:331
1420322994233,7cyclictest1456350-21ntpq07:41:291
1420322994231,9cyclictest1571639-21cp09:40:011
1420319994232,7cyclictest282-21systemd-journal11:15:000
1420322994136,4cyclictest1621754-21kworker/u8:1+flush-8:012:26:391
1420322994034,4cyclictest1690162-21journal-offline11:36:281
1420322993931,5cyclictest1671602-21apt-get11:21:171
1420319993933,4cyclictest1731223-21wget12:21:190
1420325993827,9cyclictest282-21systemd-journal10:43:442
1420325993827,9cyclictest282-21systemd-journal10:43:442
1420322993833,3cyclictest1641319-21kworker/u8:2+events_unbound11:20:011
1420322993831,5cyclictest1666067-21apt-get11:15:001
1420322993828,8cyclictest1621754-21kworker/u8:1+flush-8:012:31:301
142031999384,17cyclictest0-21swapper/009:40:040
1420319993831,4cyclictest1517013-21latency_hist08:45:010
1420322993733,3cyclictest1675931-21kworker/u8:0+events_unbound12:06:331
1420319993712,14cyclictest1660303-21ntpq11:06:330
1420325993627,7cyclictest282-21systemd-journal07:14:592
1420322993631,4cyclictest1425224-21kworker/u8:3+flush-8:007:31:201
1420322993631,3cyclictest1451655-21kworker/u8:0+flush-8:008:56:381
1420322993628,6cyclictest1606963-21/usr/sbin/munin10:16:311
1420322993625,8cyclictest282-21systemd-journal09:55:011
1420319993613,11cyclictest1720073-21ntpq12:06:300
1420319993612,13cyclictest1442628-21diskstats07:31:190
1420325993528,5cyclictest282-21systemd-journal12:20:002
1420322993531,3cyclictest1596960-21kworker/u8:3+events_unbound10:26:351
1420322993531,3cyclictest1425224-21kworker/u8:3+flush-8:007:26:231
1420322993530,4cyclictest1675931-21kworker/u8:0+events_unbound12:16:391
1420322993530,3cyclictest1425224-21kworker/u8:3+events_unbound08:11:381
1420322993528,5cyclictest1621754-21kworker/u8:1+events_unbound12:01:401
142031999358,14cyclictest1456585-21/usr/sbin/munin07:41:350
1420319993528,5cyclictest1566574-21cron09:35:010
1420319993527,6cyclictest1616902-21apt-get10:26:170
1420325993426,6cyclictest282-21systemd-journal10:55:012
1420325993425,7cyclictest282-21systemd-journal11:25:012
1420322993430,3cyclictest1373426-21kworker/u8:2+flush-8:007:21:221
1420322993430,2cyclictest1602798-21irqrtprio10:11:261
1420322993429,4cyclictest1410612-21kworker/u8:1+events_unbound07:36:381
142031999349,14cyclictest1585894-21/usr/sbin/munin09:51:350
142031999349,14cyclictest1501641-21users08:26:390
142031999348,13cyclictest1641654-21aten2_r5power_c10:51:180
142031999348,13cyclictest1502988-21ps08:31:250
142031999346,18cyclictest1493859-21kthreadcore08:21:250
142031999346,16cyclictest1481084-21wc08:06:300
1420319993416,2cyclictest1431326-21ntpq07:16:330
1420319993411,13cyclictest1541186-21/usr/sbin/munin09:06:360
1420319993411,12cyclictest1715253-21/usr/sbin/munin12:01:340
1420319993411,11cyclictest1726367-21/usr/sbin/munin12:16:190
1420319993410,12cyclictest1709943-21ntpq11:56:330
1420322993326,5cyclictest1542211-21apt-get09:11:181
1420322993325,6cyclictest1577076-21apt-get09:46:151
142031999339,14cyclictest1626899-21/usr/sbin/munin10:36:200
142031999338,14cyclictest1473435-21irqstats08:01:250
142031999338,14cyclictest1441174-21ntpq07:26:310
142031999337,14cyclictest1542933-21irqrtprio09:11:250
142031999337,12cyclictest1684177-21kthreadcore11:31:270
142031999337,12cyclictest1672523-21kthreadcore11:21:250
142031999336,17cyclictest1602604-21/usr/sbin/munin10:11:260
142031999334,6cyclictest1487716-21fschecks_count08:16:240
1420319993311,11cyclictest0-21swapper/007:35:260
1420319993310,13cyclictest1610710-21ntpq10:16:320
1420325993226,4cyclictest1467313-21gpgv07:55:012
1420322993228,3cyclictest1641319-21kworker/u8:2+flush-8:011:31:221
1420322993227,4cyclictest1472429-21kworker/u8:1+flush-8:008:26:351
1420322993227,4cyclictest1472429-21kworker/u8:1+flush-8:008:01:361
1420322993224,6cyclictest1561973-21apt-get09:31:171
142031999329,9cyclictest1420320-21cat07:10:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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