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2026-03-30 - 22:30

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #a, 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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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 rackaslot8s.osadl.org (updated Mon Mar 30, 2026 12:45:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
94452180125,48sleep30-21swapper/307:09:203
9288216897,25sleep10-21swapper/107:07:181
965621590,4sleep00-21swapper/007:10:000
3055721530,2sleep20-21swapper/212:22:232
93922142106,25sleep20-21swapper/207:08:392
223042650,2chrt0-21swapper/010:40:190
52782570,1sleep30-21swapper/309:40:073
81552560,2sleep10-21swapper/110:30:131
200202560,2sleep10-21swapper/112:38:561
268372550,3sleep20-21swapper/210:44:232
115102550,8sleep228-21ksoftirqd/210:08:352
107352540,2sleep30-21swapper/311:44:353
76062530,2sleep00-21swapper/011:41:280
178752530,2sleep10-21swapper/110:37:031
123552520,1sleep30-21swapper/311:45:203
123552520,1sleep30-21swapper/311:45:203
305152500,2sleep00-21swapper/009:58:380
4402490,2chrt0-21swapper/209:12:012
10402460,2sleep30-21swapper/310:25:113
255152440,2sleep10-21swapper/110:42:581
223022440,2sleep10-21swapper/111:05:091
71692350,1chrt0-21swapper/210:53:422
977199303,5cyclictest30423-21apt-get09:35:010
977199291,4cyclictest12-21ksoftirqd/011:25:020
65502290,1sleep20-21swapper/212:29:052
977199283,3cyclictest12-21ksoftirqd/009:35:010
9771992824,3cyclictest131rcuc/011:51:010
9771992824,3cyclictest131rcuc/009:40:570
977199281,7cyclictest12-21ksoftirqd/009:50:220
9771992814,4cyclictest12-21ksoftirqd/010:10:000
977399279,12cyclictest30558-21kworker/u8:110:30:122
977399279,10cyclictest28-21ksoftirqd/209:44:002
977399275,7cyclictest141rcu_preempt12:15:012
977199279,8cyclictest12-21ksoftirqd/011:07:170
977199277,7cyclictest12-21ksoftirqd/012:17:320
977199277,10cyclictest12-21ksoftirqd/010:47:540
977199272,3cyclictest12-21ksoftirqd/012:05:000
9771992722,4cyclictest131rcuc/010:01:020
9771992722,3cyclictest131rcuc/011:16:270
9771992720,5cyclictest12-21ksoftirqd/012:20:020
977199271,24cyclictest0-21swapper/007:10:070
237402270,1sleep30-21swapper/307:40:213
228062270,2sleep10-21swapper/111:53:121
123292270,9sleep012-21ksoftirqd/010:33:130
977399269,3cyclictest141rcu_preempt12:35:122
977199269,6cyclictest12-21ksoftirqd/008:34:010
977199267,8cyclictest12-21ksoftirqd/011:46:050
977199267,8cyclictest12-21ksoftirqd/011:46:050
977199267,10cyclictest12-21ksoftirqd/010:37:480
977199262,8cyclictest12-21ksoftirqd/011:35:340
9771992621,4cyclictest131rcuc/010:18:020
9771992621,4cyclictest131rcuc/009:22:510
9771992619,5cyclictest12-21ksoftirqd/011:00:000
9771992619,5cyclictest12-21ksoftirqd/010:25:000
977199260,8cyclictest12-21ksoftirqd/009:45:270
977499259,7cyclictest25759-21tune2fs11:55:183
9774992510,3cyclictest301582ntp_states11:10:213
9773992521,2cyclictest281ksoftirqd/209:35:012
9772992523,1cyclictest0-21swapper/107:10:031
977199259,7cyclictest12-21ksoftirqd/009:16:390
977199256,7cyclictest12-21ksoftirqd/011:02:150
977199256,7cyclictest12-21ksoftirqd/011:02:150
9771992521,3cyclictest131rcuc/011:56:060
9771992520,4cyclictest131rcuc/010:10:140
9771992518,4cyclictest6637-21tr12:05:150
977199251,6cyclictest12-21ksoftirqd/010:25:230
22302250,2chrt0-21swapper/309:37:183
169832250,1chrt0-21swapper/312:35:523
977399249,8cyclictest28-21ksoftirqd/210:16:222
9773992410,4cyclictest28-21ksoftirqd/209:30:242
9772992418,4cyclictest22-21ksoftirqd/110:00:001
9772992415,6cyclictest8872-21/usr/sbin/munin10:55:151
977199248,7cyclictest12-21ksoftirqd/012:27:330
977199248,6cyclictest12-21ksoftirqd/009:29:290
977199248,6cyclictest12-21ksoftirqd/009:29:290
977199244,8cyclictest12-21ksoftirqd/011:11:140
977199244,12cyclictest12-21ksoftirqd/011:32:560
977199241,8cyclictest27857-21/usr/sbin/munin09:05:170
9771992416,6cyclictest12-21ksoftirqd/011:25:000
977199240,8cyclictest12-21ksoftirqd/009:10:140
9774992314,7cyclictest12967-21cat09:45:203
9774992314,7cyclictest10836-21python308:25:213
9774992314,6cyclictest22113-21memory10:40:183
9773992317,4cyclictest28-21ksoftirqd/209:20:002
977399230,12cyclictest12140-21kworker/2:009:26:462
977399230,12cyclictest12140-21kworker/2:009:26:462
9772992314,6cyclictest24174-21diskstats11:30:131
9772992313,7cyclictest16660-21df_inode08:40:131
9772992313,7cyclictest14554-21processes10:10:221
977199237,8cyclictest12-21ksoftirqd/012:13:460
977199236,5cyclictest12-21ksoftirqd/012:31:390
977199236,5cyclictest12-21ksoftirqd/012:31:390
9771992319,3cyclictest131rcuc/009:00:200
9771992319,3cyclictest131rcuc/008:50:200
9771992319,3cyclictest131rcuc/007:50:170
9771992319,3cyclictest131rcuc/007:30:150
977199231,8cyclictest12-21ksoftirqd/010:50:580
977199231,6cyclictest12-21ksoftirqd/012:35:160
977199230,7cyclictest12-21ksoftirqd/007:15:150
977499221,5cyclictest0-21swapper/309:11:533
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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