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2026-08-29 - 07:41

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 Sat Aug 29, 2026 00:44:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
168510521520,2sleep3481ktimers/321:07:383
16667412800,2chrt575-21kworker/3:2-events20:47:553
1566619995243,6cyclictest1846720-21latency_hist23:50:011
17102352480,3sleep10-21swapper/121:32:401
1566619994335,6cyclictest275-21systemd-journal00:20:001
1566614994333,7cyclictest1816799-21apt-get23:20:010
156661499413,36cyclictest1643090-21kworker/0:0+events22:17:280
1566614994033,5cyclictest1707799-21latency_hist21:30:010
156661499403,35cyclictest1561604-21kworker/0:2+events19:37:430
156661499402,36cyclictest1643090-21kworker/0:0+events21:17:440
156661499402,36cyclictest1643090-21kworker/0:0+events20:57:340
156661499382,30cyclictest1767392-21kworker/0:1+events23:47:300
156661499382,30cyclictest1767392-21kworker/0:1+events00:02:300
156661499373,28cyclictest1603322-21kworker/0:1+events20:02:300
1566614993729,6cyclictest1638548-21/usr/sbin/munin20:22:480
156661499372,29cyclictest1603322-21kworker/0:1+events20:12:290
1566619993530,3cyclictest1657904-21munin-run20:40:001
156661499359,21cyclictest1767392-21kworker/0:1+events23:02:300
156661499353,30cyclictest1767392-21kworker/0:1+events22:37:300
156661499353,27cyclictest1643090-21kworker/0:0+events22:22:300
1566623993430,2cyclictest1837800-21irqcore23:42:362
1566619993428,4cyclictest1786829-21timerwakeupswit22:47:481
156661499343,29cyclictest1767392-21kworker/0:1+events00:37:440
1566614993425,7cyclictest275-21systemd-journal23:30:000
156661499342,30cyclictest1767392-21kworker/0:1+events23:12:320
156661499342,30cyclictest1767392-21kworker/0:1+events22:55:010
1566614993413,19cyclictest1643090-21kworker/0:0+events20:52:450
156661499341,28cyclictest1643090-21kworker/0:0+events21:37:170
156661499341,27cyclictest1643090-21kworker/0:0+events22:32:300
156661499341,27cyclictest1643090-21kworker/0:0+events22:32:300
1566619993327,4cyclictest275-21systemd-journal20:41:461
1566614993328,3cyclictest1806654-21unixbench_singl23:07:510
156661499332,29cyclictest1561604-21kworker/0:2+events19:47:330
156661499331,31cyclictest1643090-21kworker/0:0+events21:06:290
156661499331,30cyclictest1643090-21kworker/0:0+events21:42:480
156661499331,27cyclictest785358-21kworker/0:0+events19:12:240
156661499331,27cyclictest1767392-21kworker/0:1+events00:05:040
1566614993311,20cyclictest1643090-21kworker/0:0+events20:42:450
156661499330,27cyclictest1561604-21kworker/0:2+events19:30:500
1566623993221,9cyclictest1593456-21cat19:35:012
1566619993228,2cyclictest0-21swapper/123:40:001
1566619993225,5cyclictest1722638-21kworker/u8:2+flush-8:022:17:331
1566619993224,6cyclictest1677914-21apt-get21:00:011
1566619993223,7cyclictest1593157-21latency_hist19:35:011
156661499327,20cyclictest1767392-21kworker/0:1+events00:20:300
1566614993223,6cyclictest275-21systemd-journal20:20:010
156661499322,29cyclictest1767392-21kworker/0:1+events22:42:450
156661499322,29cyclictest1767392-21kworker/0:1+events00:27:410
156661499322,28cyclictest1767392-21kworker/0:1+events00:17:460
15618722324,9sleep10-21swapper/119:06:051
1566623993126,4cyclictest1504117-21kworker/u8:2+flush-8:019:27:482
1566619993127,3cyclictest1789743-21kthreadcore22:52:411
1566619993126,3cyclictest1856636-21unixbench_singl23:57:501
1566619993126,3cyclictest1767362-21cron22:30:001
1566619993124,6cyclictest1738214-21aten2_r5power_e22:02:311
1566619993123,6cyclictest275-21systemd-journal00:35:001
156661499318,22cyclictest1643090-21kworker/0:0+events22:12:460
156661499316,23cyclictest1643090-21kworker/0:0+events20:32:380
156661499312,27cyclictest1643090-21kworker/0:0+events21:52:380
156661499312,27cyclictest1643090-21kworker/0:0+events20:47:540
156661499312,27cyclictest1643090-21kworker/0:0+events20:37:330
156661499311,29cyclictest1643090-21kworker/0:0+events22:29:180
156661499311,28cyclictest1767392-21kworker/0:1+events23:57:420
156661499311,28cyclictest1767392-21kworker/0:1+events23:52:460
1566614993110,15cyclictest1561604-21kworker/0:2+events19:27:300
1566623993027,2cyclictest1737466-21ls22:00:002
1566619993026,3cyclictest1743810-21irqrtprio22:07:371
1566619993026,3cyclictest1723167-21aten2_r5power_v21:47:311
1566619993023,5cyclictest1618089-21cron20:00:001
1566619993022,6cyclictest1713475-21fschecks_time21:37:341
156661499307,22cyclictest1643090-21kworker/0:0+events21:22:300
156661499306,23cyclictest1643090-21kworker/0:0+events21:47:420
156661499306,22cyclictest1643090-21kworker/0:0+events22:07:320
1566614993025,3cyclictest1890697-21needreboot00:32:430
1566614993025,3cyclictest1832557-21cpuspeed_turbos23:37:320
1566614993023,5cyclictest1782732-21grep22:47:310
1566614993011,17cyclictest1643090-21kworker/0:0+events21:57:420
1566614993010,15cyclictest1643090-21kworker/0:0+events21:00:140
18261212290,3sleep3575-21kworker/3:2+events23:27:433
1566623992922,5cyclictest1637890-21apt-get20:20:012
1566623992917,10cyclictest1598368-21awk19:40:002
1566619992926,2cyclictest1782213-21cron22:45:011
1566619992926,2cyclictest1735128-21kthreadcore21:57:391
1566619992926,2cyclictest1700519-21kthreadcore21:22:391
1566619992925,3cyclictest1722608-21cron21:45:001
1566619992924,4cyclictest1822428-21aten2_r5power_c23:27:331
1566619992924,3cyclictest1688822-21fschecks_time21:12:331
1566619992923,5cyclictest1593131-21kworker/u8:0+flush-8:019:47:471
1566619992921,6cyclictest1648446-21apt-get20:32:311
1566619992921,6cyclictest1633360-21/usr/sbin/munin20:17:481
1566614992911,17cyclictest1767392-21kworker/0:1+events22:57:380
1566614992910,18cyclictest1643090-21kworker/0:0+events22:04:380
156661499290,27cyclictest1603322-21kworker/0:1+events19:57:440
18338432280,6sleep20-21swapper/223:37:382
1566623992824,2cyclictest1713176-21aten2_r5power_c21:37:322
1566623992824,2cyclictest1682843-21unixbench_multi21:02:532
1566623992820,6cyclictest275-21systemd-journal22:27:472
1566619992824,3cyclictest1632681-21unixbench_multi20:12:481
1566619992824,2cyclictest0-21swapper/123:05:001
1566619992823,3cyclictest1707784-21cron21:30:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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