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2025-07-01 - 04:47

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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 rack7slot7s.osadl.org (updated Tue Jul 01, 2025 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26532210465,34sleep30-21swapper/319:06:373
26781210275,9sleep10-21swapper/119:09:491
2655628067,9sleep00-21swapper/019:06:530
2678227969,6sleep20-21swapper/219:09:502
307962650,2sleep220234-21kworker/2:221:17:232
2688799280,28cyclictest0-21swapper/221:37:212
2688599280,0cyclictest0-21swapper/100:25:461
2688599260,3cyclictest0-21swapper/122:57:021
2688599250,2cyclictest0-21swapper/121:30:471
2688599240,1cyclictest0-21swapper/123:07:321
2689099220,1cyclictest0-21swapper/322:58:143
2688799220,1cyclictest0-21swapper/221:49:402
2688599221,17cyclictest0-21swapper/121:40:151
136422220,0sleep30-21swapper/323:30:033
2689099216,7cyclictest224-21systemd-journal23:17:573
2688599213,3cyclictest0-21swapper/122:10:191
2688599211,3cyclictest0-21swapper/122:31:391
26885992020,0cyclictest0-21swapper/121:49:511
2688199208,6cyclictest24399-21dpkg22:49:590
2689099198,6cyclictest224-21systemd-journal22:46:403
2688799190,19cyclictest0-21swapper/222:54:572
2688599190,1cyclictest0-21swapper/100:20:291
2688599190,1cyclictest0-21swapper/100:20:281
26887991816,1cyclictest32-21ksoftirqd/223:10:002
2688799180,17cyclictest0-21swapper/223:23:272
2688799180,17cyclictest0-21swapper/222:10:192
26885991813,2cyclictest1201-21kworker/u8:022:35:071
2688599180,1cyclictest0-21swapper/122:19:511
2688599180,10cyclictest0-21swapper/120:15:181
26890991716,1cyclictest0-21swapper/300:10:103
2688799170,16cyclictest0-21swapper/223:13:522
26885991714,1cyclictest25-21ksoftirqd/121:50:311
2688599170,1cyclictest0-21swapper/121:21:451
2688599170,1cyclictest0-21swapper/121:17:481
26881991716,1cyclictest0-21swapper/023:07:320
12392170,2sleep11242-21latency_hist00:35:001
26890991615,1cyclictest0-21swapper/300:17:593
26890991611,4cyclictest16028-21pmu-power21:30:273
2689099160,1cyclictest0-21swapper/323:00:283
2689099160,1cyclictest0-21swapper/323:00:273
2688799161,1cyclictest141rcu_preempt23:17:442
2688799160,15cyclictest0-21swapper/223:40:162
2688599160,2cyclictest0-21swapper/123:17:371
2688599160,2cyclictest0-21swapper/100:36:091
2688199165,6cyclictest25588-21munin-run23:15:010
2688199160,1cyclictest0-21swapper/021:53:440
26887991513,1cyclictest32-21ksoftirqd/222:33:222
2688799151,1cyclictest10956-21ssh21:26:322
26885991510,3cyclictest32464-21ls20:25:281
26885991510,3cyclictest25842-21cron20:15:001
2688599150,1cyclictest0-21swapper/123:46:241
2688199159,2cyclictest28891-21/usr/sbin/munin22:05:230
26890991410,3cyclictest21242-21grep23:10:283
26887991413,1cyclictest32-21ksoftirqd/222:44:132
2688799140,14cyclictest0-21swapper/200:07:312
2688599149,3cyclictest8228-21tr21:25:161
26885991411,2cyclictest18720-21grep20:00:001
26885991410,2cyclictest25767-21grep22:50:191
2688599140,1cyclictest0-21swapper/123:54:471
2688599140,1cyclictest0-21swapper/123:34:151
2688599140,1cyclictest0-21swapper/100:07:491
2688599140,12cyclictest0-21swapper/122:26:261
2688199145,8cyclictest2972-21perf20:35:000
26881991410,3cyclictest32528-21grep20:25:280
2688199140,1cyclictest0-21swapper/022:30:160
2689099139,3cyclictest11100-21cut22:40:163
2689099134,8cyclictest7744-21snmpd23:24:553
26890991310,2cyclictest29221-21sh19:14:593
26890991310,2cyclictest2546-21tr21:45:203
26890991310,2cyclictest23774-21cut20:10:163
26890991310,2cyclictest10414-21cut19:40:273
2688799139,4cyclictest26875-21cyclictest00:16:242
2688799139,3cyclictest9013-21tr21:50:172
2688799139,3cyclictest29733-21tr19:15:132
2688799139,3cyclictest29733-21tr19:15:132
2688799139,3cyclictest28080-21cut21:40:152
2688799139,3cyclictest17062-21grep21:55:292
2688799138,4cyclictest2584-21basename22:09:592
2688799135,4cyclictest32-21ksoftirqd/219:55:002
26887991311,1cyclictest0-21swapper/222:25:152
26887991310,2cyclictest7382-21grep23:25:162
26887991310,2cyclictest32173-21grep22:55:182
26887991310,2cyclictest28080-21grep00:30:172
26887991310,2cyclictest24530-21date22:50:012
26887991310,2cyclictest20887-21tr23:35:152
26887991310,2cyclictest1562-21grep20:30:202
2688799130,12cyclictest0-21swapper/200:37:122
26885991311,2cyclictest25-21ksoftirqd/123:00:141
26885991311,2cyclictest25-21ksoftirqd/123:00:141
26885991310,2cyclictest26426-21sh21:15:011
26885991310,2cyclictest26426-21sh21:15:001
26885991310,2cyclictest22933-21ssh22:25:001
26885991310,2cyclictest1073-21cat23:45:001
2688599130,1cyclictest0-21swapper/100:01:311
2688199139,3cyclictest4675-21tr19:30:160
2688199134,2cyclictest0-21swapper/020:20:000
2688199131,6cyclictest16125-21munin-run19:55:000
2688199131,11cyclictest30192-21grep19:15:160
2688199131,11cyclictest30192-21grep19:15:150
26881991310,2cyclictest23740-21grep22:25:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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