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2026-07-12 - 09:24

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #c, 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 rackcslot7s.osadl.org (updated Sun Jul 12, 2026 00:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
246888021440,3sleep33056-21PK-Backend22:00:003
243421621180,3sleep13056-21PK-Backend20:20:131
240828527940,13sleep10-21swapper/119:06:261
240712227948,21sleep00-21swapper/019:05:140
139099780,62rtkit-daemon0-21swapper/219:05:112
240823227638,14sleep30-21swapper/319:05:453
24654362520,4sleep30-21swapper/321:50:013
25102692460,4sleep13056-21PK-Backend23:55:221
24903752270,3chrt3056-21PK-Backend23:00:113
240872699262,8cyclictest2465692-21apt21:50:113
25065892250,6sleep00-21swapper/023:45:190
25091622240,3sleep00-21swapper/023:55:010
240872699241,21cyclictest2515435-21/usr/sbin/munin00:10:183
2408726992410,12cyclictest1095-21runrttasks23:50:123
24348962230,4sleep20-21swapper/220:20:212
2408726992320,2cyclictest3056-21PK-Backend22:59:343
2408726992315,6cyclictest2445789-21apt-get20:55:003
240871899230,21cyclictest3056-21PK-Backend21:53:531
139099230,16rtkit-daemon3056-21PK-Backend20:33:583
139099230,15rtkit-daemon0-21swapper/300:22:353
2408726992220,1cyclictest3056-21PK-Backend23:06:233
2408726992220,1cyclictest3056-21PK-Backend23:06:233
2408726992219,2cyclictest3056-21PK-Backend23:30:093
2408726992219,2cyclictest3056-21PK-Backend23:15:573
2408726992219,2cyclictest0-21swapper/322:30:213
2408726992214,6cyclictest2520128-21grep00:25:123
2408722992220,1cyclictest0-21swapper/223:45:122
2408722992220,1cyclictest0-21swapper/223:17:132
2408722992220,1cyclictest0-21swapper/222:16:032
2408722992220,1cyclictest0-21swapper/222:14:072
2408722992220,1cyclictest0-21swapper/221:45:352
2408722992220,1cyclictest0-21swapper/220:59:102
2408722992220,1cyclictest0-21swapper/219:40:432
2408722992220,1cyclictest0-21swapper/200:39:062
2408722992217,3cyclictest2486486-21taskset22:49:562
2408722992214,6cyclictest2468498-21users21:55:252
240872299220,3cyclictest2513421-21df00:05:122
240872299220,2cyclictest2509313-21apt23:55:132
240872299220,21cyclictest0-21swapper/221:03:372
2408718992220,1cyclictest3056-21PK-Backend20:55:181
2408718992220,1cyclictest0-21swapper/100:28:241
2408718992219,2cyclictest3056-21PK-Backend23:48:291
2408718992213,7cyclictest883-21dbus-daemon23:35:011
2408716992215,5cyclictest2156-21gnome-shell22:02:090
240871699220,20cyclictest0-21swapper/019:50:170
139099220,15rtkit-daemon3056-21PK-Backend23:14:593
139099220,15rtkit-daemon3056-21PK-Backend22:00:173
139099220,15rtkit-daemon0-21swapper/220:26:412
139099220,14rtkit-daemon0-21swapper/322:44:253
139099220,14rtkit-daemon0-21swapper/220:47:252
24925232210,3sleep1251rcuc/123:05:181
24925232210,3sleep1251rcuc/123:05:171
240872699212,4cyclictest0-21swapper/319:10:123
2408726992119,1cyclictest3056-21PK-Backend23:24:423
2408726992119,1cyclictest3056-21PK-Backend22:49:533
2408726992119,1cyclictest3056-21PK-Backend22:15:403
2408726992119,1cyclictest0-21swapper/323:58:553
2408726992119,1cyclictest0-21swapper/322:23:443
2408726992119,1cyclictest0-21swapper/320:45:023
2408726992119,1cyclictest0-21swapper/320:20:353
2408726992118,2cyclictest3056-21PK-Backend19:45:333
2408726992113,6cyclictest2499766-21python323:25:213
2408726992111,7cyclictest2028-21upowerd00:35:583
240872699210,8cyclictest2511271-21cnf-update-db00:00:013
240872699210,20cyclictest3056-21PK-Backend19:28:043
240872699210,19cyclictest3056-21PK-Backend19:55:473
240872699210,19cyclictest3056-21PK-Backend19:30:203
2408722992119,1cyclictest0-21swapper/223:53:032
2408722992119,1cyclictest0-21swapper/223:40:522
2408722992119,1cyclictest0-21swapper/223:27:352
2408722992119,1cyclictest0-21swapper/223:01:122
2408722992119,1cyclictest0-21swapper/222:31:312
2408722992119,1cyclictest0-21swapper/222:03:182
2408722992119,1cyclictest0-21swapper/221:52:302
2408722992119,1cyclictest0-21swapper/221:09:592
2408722992119,1cyclictest0-21swapper/219:47:532
2408722992119,1cyclictest0-21swapper/219:31:362
2408722992119,1cyclictest0-21swapper/200:23:392
2408722992113,6cyclictest2516664-21expr00:15:112
240872299210,20cyclictest0-21swapper/223:06:052
240872299210,20cyclictest0-21swapper/223:06:042
240872299210,20cyclictest0-21swapper/221:39:132
240872299210,20cyclictest0-21swapper/220:52:142
240872299210,20cyclictest0-21swapper/220:18:422
2408718992119,1cyclictest3056-21PK-Backend22:29:411
2408718992119,1cyclictest3056-21PK-Backend21:37:091
2408718992119,1cyclictest3056-21PK-Backend21:31:011
2408718992119,1cyclictest3056-21PK-Backend21:27:571
2408718992119,1cyclictest0-21swapper/123:41:261
2408718992119,1cyclictest0-21swapper/123:19:231
2408718992119,1cyclictest0-21swapper/122:45:581
2408718992119,1cyclictest0-21swapper/122:08:531
2408718992119,1cyclictest0-21swapper/120:33:011
2408718992114,5cyclictest436-20systemd-journal22:55:001
2408718992113,6cyclictest2420417-21df19:40:121
240871899210,20cyclictest1389-21rtkit-daemon23:13:021
240871899210,20cyclictest0-21swapper/122:21:241
240871899210,19cyclictest3056-21PK-Backend21:45:141
240871899210,19cyclictest3056-21PK-Backend21:11:281
240871899210,19cyclictest3056-21PK-Backend21:00:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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