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2026-08-08 - 17:26

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 Sat Aug 08, 2026 12:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
123974921250,7sleep0161rcuc/012:25:010
139099880,74rtkit-daemon0-21swapper/007:06:570
11271482870,6sleep10-21swapper/107:05:101
112718627545,22sleep30-21swapper/307:05:133
11469002650,7sleep1261ksoftirqd/108:00:001
112822926444,14sleep20-21swapper/207:09:382
11295352600,4sleep33056-21PK-Backend07:10:183
12046092520,3sleep1251rcuc/110:45:011
12369852500,2sleep00-21swapper/012:15:230
11925052490,4sleep10-21swapper/110:10:001
12248592460,2sleep00-21swapper/011:40:210
139099370,3rtkit-daemon3056-21PK-Backend10:59:490
139099360,3rtkit-daemon0-21swapper/010:22:500
139099350,3rtkit-daemon0-21swapper/008:21:550
1128475992616,8cyclictest1230484-21unin-run12:00:003
1128475992616,8cyclictest1230484-21unin-run12:00:003
11311992250,3sleep10-21swapper/107:15:131
112847099254,11cyclictest34-21ksoftirqd/209:29:592
112846699251,22cyclictest1149603-21python308:05:221
139099240,16rtkit-daemon3056-21PK-Backend12:18:411
112847099242,11cyclictest34-21ksoftirqd/210:10:002
139099230,15rtkit-daemon3056-21PK-Backend09:20:150
139099230,14rtkit-daemon0-21swapper/007:10:230
1128475992315,6cyclictest1202730-21perf10:40:003
112847599231,2cyclictest141rcu_preempt09:50:013
1128475992310,11cyclictest1172051-21/usr/sbin/munin09:10:213
1128470992320,2cyclictest0-21swapper/209:49:412
1128470992320,2cyclictest0-21swapper/207:51:382
1128470992320,1cyclictest0-21swapper/211:58:112
1128470992320,1cyclictest0-21swapper/211:58:102
1128470992318,3cyclictest1224045-21ls11:40:122
1128470992317,4cyclictest1165815-21ls08:55:012
1128470992313,4cyclictest34-21ksoftirqd/211:11:382
139099220,14rtkit-daemon0-21swapper/110:35:351
12297852220,4chrt0-21swapper/111:55:231
12297852220,4chrt0-21swapper/111:55:231
112847599220,20cyclictest1156044-21df08:25:133
112847099229,2cyclictest141rcu_preempt08:13:422
1128470992220,1cyclictest0-21swapper/212:12:512
1128470992220,1cyclictest0-21swapper/211:09:442
1128470992220,1cyclictest0-21swapper/210:41:052
1128470992220,1cyclictest0-21swapper/210:12:462
1128470992219,2cyclictest0-21swapper/210:46:462
1128470992218,3cyclictest1201244-21/usr/sbin/munin10:35:232
1128470992217,3cyclictest1207136-21cut10:50:182
1128470992214,6cyclictest1217564-21awk11:20:192
1128470992211,9cyclictest1146764-21unin-run08:00:002
1128470992211,4cyclictest34-21ksoftirqd/212:38:472
112847099220,20cyclictest11300972chrt07:12:182
1128466992220,1cyclictest0-21swapper/110:30:211
1128466992220,1cyclictest0-21swapper/109:06:051
1128466992220,1cyclictest0-21swapper/109:06:051
1128466992220,1cyclictest0-21swapper/107:28:581
1128466992220,1cyclictest0-21swapper/107:12:501
1128466992210,10cyclictest1165841-21unin-run08:55:011
112846699220,2cyclictest1233322-21sed12:05:181
112846699220,20cyclictest0-21swapper/108:42:521
112845999222,14cyclictest1095-21runrttasks08:10:130
1128459992216,4cyclictest1162335-21cron08:45:000
1128459992215,5cyclictest883-21dbus-daemon10:00:000
1128459992214,2cyclictest13-21ksoftirqd/008:00:000
1128459992212,7cyclictest1214865-21perf11:15:000
112845999220,20cyclictest1149099-21df08:05:140
139099210,14rtkit-daemon3056-21PK-Backend09:10:460
139099210,14rtkit-daemon0-21swapper/007:32:030
112847599217,9cyclictest42-21ksoftirqd/312:15:153
112847599213,8cyclictest141rcu_preempt12:10:203
112847599212,2cyclictest141rcu_preempt11:35:013
1128475992118,2cyclictest3056-21PK-Backend09:52:203
1128475992111,3cyclictest42-21ksoftirqd/311:00:003
1128475992110,9cyclictest3056-21PK-Backend11:49:593
112847599210,1cyclictest141rcu_preempt08:55:003
112847599210,1cyclictest0-21swapper/309:38:003
112847099219,4cyclictest34-21ksoftirqd/209:08:052
112847099219,4cyclictest34-21ksoftirqd/209:08:052
112847099218,4cyclictest34-21ksoftirqd/208:31:542
1128470992119,1cyclictest0-21swapper/211:19:582
1128470992119,1cyclictest0-21swapper/210:01:302
1128470992119,1cyclictest0-21swapper/209:33:452
1128470992119,1cyclictest0-21swapper/207:43:542
1128470992119,1cyclictest0-21swapper/207:30:572
1128470992114,5cyclictest34-21ksoftirqd/210:15:272
1128470992111,3cyclictest34-21ksoftirqd/209:16:212
1128470992110,3cyclictest34-21ksoftirqd/208:55:062
1128470992110,2cyclictest141rcu_preempt08:05:182
112847099210,20cyclictest0-21swapper/209:57:442
112847099210,20cyclictest0-21swapper/209:35:552
112847099210,20cyclictest0-21swapper/208:36:062
1128466992119,1cyclictest0-21swapper/112:03:551
1128466992119,1cyclictest0-21swapper/111:48:351
1128466992119,1cyclictest0-21swapper/111:43:081
1128466992119,1cyclictest0-21swapper/111:00:021
1128466992119,1cyclictest0-21swapper/110:01:281
1128466992119,1cyclictest0-21swapper/109:37:071
1128466992119,1cyclictest0-21swapper/109:01:321
1128466992119,1cyclictest0-21swapper/108:37:261
1128466992119,1cyclictest0-21swapper/108:34:351
1128466992119,1cyclictest0-21swapper/107:30:481
1128466992114,6cyclictest1151731-21sshd08:12:371
112846699210,20cyclictest3056-21PK-Backend10:21:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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