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2026-04-27 - 07:30

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 Mon Apr 27, 2026 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
132519922270,10sleep342-21ksoftirqd/319:05:113
142538021120,4sleep013-21ksoftirqd/023:50:000
139099870,52rtkit-daemon0-21swapper/019:05:390
132587827139,25sleep10-21swapper/119:05:231
132630726646,14sleep20-21swapper/219:05:402
14182032530,2sleep10-21swapper/123:30:001
13769502490,8sleep234-21ksoftirqd/221:30:162
13762792430,2sleep20-21swapper/221:29:552
14247592350,3sleep10-21swapper/123:45:201
1326770992723,3cyclictest2164-21gdbus21:54:190
139099240,16rtkit-daemon3056-21PK-Backend21:17:080
139099240,16rtkit-daemon3056-21PK-Backend00:18:481
132677699240,23cyclictest1386956-21cron22:04:552
139099230,16rtkit-daemon3056-21PK-Backend22:24:191
139099230,16rtkit-daemon3056-21PK-Backend19:57:431
139099230,16rtkit-daemon3056-21PK-Backend00:13:501
139099230,15rtkit-daemon3056-21PK-Backend21:27:141
139099230,15rtkit-daemon3056-21PK-Backend20:59:031
139099230,15rtkit-daemon3056-21PK-Backend20:53:011
139099230,14rtkit-daemon0-21swapper/019:11:160
1326780992317,5cyclictest883-21dbus-daemon19:28:033
1326780992316,5cyclictest1344560-21apt-get20:00:003
1326776992310,11cyclictest1371132-21unin-run21:15:012
132677699230,3cyclictest1422650-21ntp_states23:40:202
132677499230,21cyclictest1419181-21ntp_states23:30:181
132677499230,21cyclictest1419181-21ntp_states23:30:181
139099220,15rtkit-daemon3056-21PK-Backend23:10:581
139099220,14rtkit-daemon3056-21PK-Backend23:06:511
139099220,14rtkit-daemon3056-21PK-Backend21:51:571
139099220,14rtkit-daemon3056-21PK-Backend19:18:051
139099220,13rtkit-daemon3056-21PK-Backend19:27:361
13672462220,4sleep13056-21PK-Backend21:00:231
132678099226,4cyclictest1411590-21sort23:10:133
1326780992216,4cyclictest1389031-21cat22:05:133
132677699220,20cyclictest1424269-21df_inode23:45:132
1326774992219,2cyclictest3056-21PK-Backend20:13:211
132677499220,21cyclictest3056-21PK-Backend22:52:261
132677499220,20cyclictest3056-21PK-Backend20:44:171
132677499220,20cyclictest3056-21PK-Backend19:22:441
1326770992220,1cyclictest0-21swapper/023:13:340
1326770992220,1cyclictest0-21swapper/023:09:420
1326770992220,1cyclictest0-21swapper/021:41:200
1326770992220,1cyclictest0-21swapper/020:05:280
1326770992220,1cyclictest0-21swapper/019:31:560
1326770992220,1cyclictest0-21swapper/019:31:560
1326770992220,1cyclictest0-21swapper/000:07:140
14108192210,4sleep2331rcuc/223:05:232
139099210,15rtkit-daemon3056-21PK-Backend19:32:421
139099210,15rtkit-daemon3056-21PK-Backend19:32:411
139099210,15rtkit-daemon0-21swapper/100:06:461
139099210,15rtkit-daemon0-21swapper/022:25:540
139099210,14rtkit-daemon3056-21PK-Backend22:01:531
139099210,14rtkit-daemon3056-21PK-Backend19:46:401
139099210,13rtkit-daemon3056-21PK-Backend20:19:151
132678099218,11cyclictest1330931-21/usr/sbin/munin19:20:123
1326780992119,1cyclictest3056-21PK-Backend22:25:273
132678099211,8cyclictest1341281-21latency_hist19:50:003
1326780992115,5cyclictest0-21swapper/321:34:243
1326780992113,6cyclictest1421959-21awk23:40:123
1326780992111,8cyclictest1337651-21unin-run19:40:013
1326780992111,8cyclictest1337651-21unin-run19:40:013
132678099210,8cyclictest1350063-21unin-run20:15:003
132678099210,20cyclictest42-21ksoftirqd/321:44:443
132678099210,20cyclictest3056-21PK-Backend23:15:503
132678099210,19cyclictest3056-21PK-Backend23:36:453
132678099210,19cyclictest3056-21PK-Backend22:31:563
132678099210,19cyclictest3056-21PK-Backend20:32:403
1326776992119,1cyclictest0-21swapper/221:46:162
1326776992113,6cyclictest883-21dbus-daemon19:44:172
1326776992113,6cyclictest1408616-21memory23:00:162
1326776992113,6cyclictest1352403-21df_inode20:20:142
1326776992113,6cyclictest1329222-21apt19:15:122
1326776992112,7cyclictest1384132-21df_inode21:50:152
132677699210,20cyclictest0-21swapper/220:06:192
132677699210,19cyclictest3056-21PK-Backend20:25:322
1326774992119,1cyclictest3056-21PK-Backend22:58:411
1326774992119,1cyclictest3056-21PK-Backend19:37:521
1326774992119,1cyclictest3056-21PK-Backend19:37:521
1326774992119,1cyclictest0-21swapper/122:31:101
1326774992119,1cyclictest0-21swapper/120:25:441
1326774992119,1cyclictest0-21swapper/119:13:181
1326774992119,1cyclictest0-21swapper/100:39:401
1326774992113,6cyclictest1379766-21apt-get21:40:001
1326774992112,7cyclictest1401468-21df22:40:141
132677499210,20cyclictest3056-21PK-Backend21:08:031
132677499210,20cyclictest0-21swapper/123:58:301
132677499210,20cyclictest0-21swapper/122:46:121
132677499210,20cyclictest0-21swapper/122:35:501
132677499210,19cyclictest3056-21PK-Backend23:52:011
132677499210,19cyclictest3056-21PK-Backend21:30:131
1326770992119,1cyclictest0-21swapper/023:59:300
1326770992119,1cyclictest0-21swapper/022:49:480
1326770992119,1cyclictest0-21swapper/022:17:090
1326770992119,1cyclictest0-21swapper/021:11:320
1326770992119,1cyclictest0-21swapper/020:55:590
1326770992119,1cyclictest0-21swapper/020:35:090
1326770992119,1cyclictest0-21swapper/019:55:560
1326770992119,1cyclictest0-21swapper/019:29:050
1326770992119,1cyclictest0-21swapper/000:13:570
1326770992113,6cyclictest436-20systemd-journal22:15:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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