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2025-12-28 - 10:40

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #8

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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  Congatec
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 rackeslot8s.osadl.org (updated Sun Dec 28, 2025 00:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9345239912720,1268cyclictest11748602sleep322:15:013
9345239912330,1229cyclictest13492592sleep300:29:563
9345239912223,1214cyclictest1245531-21sleep23:10:003
13033162340,1sleep10-21swapper/123:54:591
934523992118,1cyclictest0-21swapper/322:45:163
934523991916,1cyclictest0-21swapper/319:20:003
934523991714,1cyclictest0-21swapper/319:25:203
93452399164,9cyclictest1110212-21turbostat21:24:593
934523991613,1cyclictest0-21swapper/323:50:143
934523991613,1cyclictest0-21swapper/323:30:153
934523991613,1cyclictest0-21swapper/319:20:173
93452399161,11cyclictest1226462-21taskset22:55:113
93452399160,12cyclictest994654-21turbostat19:55:013
93452399159,3cyclictest1103793-21sleep21:20:003
93452399156,7cyclictest1148983-21turbostat21:59:553
934523991513,1cyclictest0-21swapper/321:35:123
934523991513,1cyclictest0-21swapper/319:35:143
934523991512,1cyclictest0-21swapper/323:40:223
934523991512,1cyclictest0-21swapper/323:14:003
934523991512,1cyclictest0-21swapper/320:40:153
934523991512,1cyclictest0-21swapper/320:10:263
934523991512,1cyclictest0-21swapper/319:56:283
93452399151,11cyclictest1084146-21taskset21:00:253
93452399151,11cyclictest1071707-21taskset20:55:003
93452399151,10cyclictest1052392-21turbostat20:40:013
93452399151,10cyclictest1020572-21taskset20:15:123
934523991413,0cyclictest0-21swapper/323:22:143
934523991412,1cyclictest0-21swapper/323:38:343
934523991412,1cyclictest0-21swapper/323:19:253
934523991412,1cyclictest0-21swapper/322:51:403
934523991412,1cyclictest0-21swapper/319:47:523
934523991412,1cyclictest0-21swapper/300:21:373
934523991412,0cyclictest0-21swapper/322:42:013
934523991412,0cyclictest0-21swapper/319:42:523
93452399141,10cyclictest968151-21taskset19:30:223
93452399141,10cyclictest968151-21taskset19:30:223
93452399141,10cyclictest1350500-21taskset00:30:163
93452399141,10cyclictest1330268-21taskset00:15:023
93452399141,10cyclictest1316611-21turbostat00:04:593
93452399141,10cyclictest1232875-21taskset23:00:013
93452399141,10cyclictest1200296-21turbostat22:35:013
93452399141,10cyclictest1142500-21chrt21:49:373
93452399141,10cyclictest1033425-21taskset20:25:153
93452399141,10cyclictest1013834-21taskset20:09:523
93452399140,11cyclictest1117117-21chrt21:30:023
11812692140,1sleep30-21swapper/322:20:153
93452399137,4cyclictest1355699-21turbostat00:39:543
93452399131,9cyclictest1077913-21taskset20:57:443
93452399131,9cyclictest1007139-21taskset20:00:593
93452399131,8cyclictest11427862sleep321:50:143
934523991312,0cyclictest0-21swapper/321:05:123
934523991312,0cyclictest0-21swapper/320:47:113
934523991311,1cyclictest0-21swapper/323:45:473
934523991311,1cyclictest0-21swapper/323:25:083
934523991311,1cyclictest0-21swapper/322:25:443
934523991311,1cyclictest0-21swapper/319:10:173
93452399131,10cyclictest1309864-21turbostat00:00:003
934523991311,0cyclictest0-21swapper/322:11:313
934523991310,1cyclictest0-21swapper/321:11:353
93452399130,10cyclictest1322883-21chrt00:08:253
93452399130,10cyclictest1322883-21chrt00:08:253
93452399130,10cyclictest1162444-21taskset22:05:163
93452399130,10cyclictest1026962-21taskset20:20:023
93452399121,9cyclictest1161509-21taskset22:01:223
934523991211,0cyclictest0-21swapper/321:40:283
934523991211,0cyclictest0-21swapper/300:10:023
934523991210,1cyclictest0-21swapper/320:32:523
93452399120,9cyclictest1200791-21taskset22:35:093
93452399120,9cyclictest1116586-21taskset21:26:213
9438432111,8sleep1943290-21/usr/sbin/munin19:15:171
301798110,5rtkit-daemon1007899-21df_inode20:05:172
301798110,4rtkit-daemon941021-21munin-node22:40:350
301798110,4rtkit-daemon941021-21munin-node00:21:450
13090062111,3sleep21309056-21/usr/sbin/munin23:55:232
9287172101,6sleep0929090-21cut19:05:200
301798100,6rtkit-daemon317-21systemd-udevd21:53:322
301798100,6rtkit-daemon1057566-21tr20:40:192
301798100,5rtkit-daemon1039807-21awk20:30:142
301798100,3rtkit-daemon430-21avahi-daemon00:08:280
301798100,3rtkit-daemon430-21avahi-daemon00:08:270
12910702104,4sleep01291987-21irqrtprio23:45:190
12831182101,5sleep11283242-21python323:35:221
12002782100,6sleep21200429-21grep22:35:002
11831142100,7sleep11185169-21grep22:20:211
10269742100,6sleep01027007-21apt-get20:20:120
30179890,5rtkit-daemon981828-21cron19:45:002
30179890,5rtkit-daemon939791-21sed19:10:210
30179890,5rtkit-daemon447-21systemd-logind22:51:330
30179890,5rtkit-daemon317-21systemd-udevd23:19:330
30179890,4rtkit-daemon950045-21apt-get19:20:140
30179890,4rtkit-daemon638-21ntpd19:50:562
30179890,4rtkit-daemon1329442-21lsb_release00:11:090
30179890,2rtkit-daemon3205-21sendmail-mta23:06:380
30179890,1rtkit-daemon0-21swapper/023:59:450
30179890,1rtkit-daemon0-21swapper/023:42:540
30179890,1rtkit-daemon0-21swapper/022:29:320
30179890,1rtkit-daemon0-21swapper/019:30:140
30179890,1rtkit-daemon0-21swapper/019:30:130
1276675290,2sleep21276750-21ps23:30:222
1266686292,5sleep11268709-21kthreadcore23:25:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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