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2026-07-13 - 02:59

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #5

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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  Eltec
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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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot5s.osadl.org (updated Mon Jul 13, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2184521080sleep1121650irq/29-eth0_g0_21:27:301
1211070ksoftirqd/1121750irq/30-eth0_g0_21:38:071
15082760sleep1121750irq/30-eth0_g0_20:03:171
179572620sleep0121650irq/29-eth0_g0_21:10:040
51882510chrt121650irq/29-eth0_g0_20:18:161
121510ksoftirqd/1121750irq/30-eth0_g0_22:36:441
121470ksoftirqd/1121650irq/29-eth0_g0_20:13:201
121460ksoftirqd/1121750irq/30-eth0_g0_22:31:301
121440ksoftirqd/1121750irq/30-eth0_g0_23:18:180
121440ksoftirqd/1121750irq/30-eth0_g0_00:18:380
121440ksoftirqd/1121750irq/30-eth0_g0_00:18:380
121440ksoftirqd/1121650irq/29-eth0_g0_21:36:011
121440ksoftirqd/1121650irq/29-eth0_g0_00:08:141
278532430sleep0121650irq/29-eth0_g0_21:51:040
121650430irq/29-eth0_g0_32120-21sed22:08:150
121650430irq/29-eth0_g0_31ksoftirqd/023:52:500
121650430irq/29-eth0_g0_31ksoftirqd/023:16:200
121430ksoftirqd/1121750irq/30-eth0_g0_23:58:421
121430ksoftirqd/1121650irq/29-eth0_g0_23:40:561
121430ksoftirqd/1121650irq/29-eth0_g0_23:40:561
121430ksoftirqd/1121650irq/29-eth0_g0_21:18:581
121430ksoftirqd/1121650irq/29-eth0_g0_21:18:581
1997699421cyclictest1037-21cat20:02:581
121750420irq/30-eth0_g0_1219-21kworker/1:223:55:201
121650420irq/29-eth0_g0_31ksoftirqd/021:45:570
121650420irq/29-eth0_g0_1964-21runrttasks19:05:190
121650420irq/29-eth0_g0_13-21kworker/0:123:24:270
1997699412cyclictest16310-21proc_pri21:03:191
1997699411cyclictest61902sleep120:23:101
121750410irq/30-eth0_g0_1219-21kworker/1:221:47:471
121750410irq/30-eth0_g0_1219-21kworker/1:200:26:131
121750410irq/30-eth0_g0_121ksoftirqd/100:22:011
121750410irq/30-eth0_g0_121ksoftirqd/100:22:011
121650410irq/29-eth0_g0_31ksoftirqd/022:22:180
121650410irq/29-eth0_g0_31ksoftirqd/021:21:430
121650410irq/29-eth0_g0_31ksoftirqd/021:21:430
121650410irq/29-eth0_g0_13-21kworker/0:123:54:180
121650410irq/29-eth0_g0_13-21kworker/0:123:29:370
121650410irq/29-eth0_g0_13-21kworker/0:122:59:070
121650410irq/29-eth0_g0_13-21kworker/0:121:27:350
121650410irq/29-eth0_g0_13-21kworker/0:121:13:520
121410ksoftirqd/1121750irq/30-eth0_g0_23:05:420
121410ksoftirqd/1121750irq/30-eth0_g0_23:00:111
121410ksoftirqd/1121650irq/29-eth0_g0_22:39:371
1997699401cyclictest32448-21unixbench_multi22:08:211
1997699401cyclictest28070-21unixbench_multi19:38:211
121750400irq/30-eth0_g0_1219-21kworker/1:223:22:241
121750400irq/30-eth0_g0_121ksoftirqd/122:46:191
121750400irq/30-eth0_g0_121ksoftirqd/122:46:191
121650400irq/29-eth0_g0_2093-21snmpd23:44:000
121650400irq/29-eth0_g0_20664-21timerandwakeup19:08:200
121650400irq/29-eth0_g0_13-21kworker/0:123:38:590
121650400irq/29-eth0_g0_13-21kworker/0:123:38:590
121650400irq/29-eth0_g0_13-21kworker/0:122:05:330
121650400irq/29-eth0_g0_13-21kworker/0:121:34:340
121650400irq/29-eth0_g0_13-21kworker/0:121:31:320
121650400irq/29-eth0_g0_13-21kworker/0:100:28:320
121650400irq/29-eth0_g0_13-21kworker/0:100:23:300
121400ksoftirqd/1121650irq/29-eth0_g0_21:16:401
121400ksoftirqd/1121650irq/29-eth0_g0_00:35:051
1997699392cyclictest27770-21interrupts00:03:121
121750390irq/30-eth0_g0_19368-21find19:03:181
121750390irq/30-eth0_g0_1219-21kworker/1:222:25:431
121750390irq/30-eth0_g0_1219-21kworker/1:222:21:391
121750390irq/30-eth0_g0_1219-21kworker/1:221:57:481
121750390irq/30-eth0_g0_121ksoftirqd/122:03:071
121750390irq/30-eth0_g0_0-21swapper/123:52:581
121750390irq/30-eth0_g0_0-21swapper/122:57:261
121650390irq/29-eth0_g0_31ksoftirqd/023:58:220
121650390irq/29-eth0_g0_21594-21missed_timers19:13:140
121650390irq/29-eth0_g0_13-21kworker/0:122:45:000
121650390irq/29-eth0_g0_13-21kworker/0:122:45:000
121650390irq/29-eth0_g0_13-21kworker/0:122:39:450
121650390irq/29-eth0_g0_13-21kworker/0:122:35:540
121650390irq/29-eth0_g0_13-21kworker/0:122:24:580
121650390irq/29-eth0_g0_13-21kworker/0:100:13:140
121650390irq/29-eth0_g0_13-21kworker/0:100:11:150
121650390irq/29-eth0_g0_121ksoftirqd/121:29:201
121650390irq/29-eth0_g0_10019-21runrttasks22:49:460
121390ksoftirqd/1121650irq/29-eth0_g0_00:28:391
1997699381cyclictest9152-21unixbench_multi20:33:201
121750380irq/30-eth0_g0_7326-21df_abs20:28:101
121750380irq/30-eth0_g0_1219-21kworker/1:223:33:221
121750380irq/30-eth0_g0_121ksoftirqd/122:51:171
121750380irq/30-eth0_g0_0-21swapper/121:58:131
121750380irq/30-eth0_g0_0-21swapper/121:58:131
121650380irq/29-eth0_g0_3968-21awk20:13:170
121650380irq/29-eth0_g0_25218-21latency19:28:120
121650380irq/29-eth0_g0_1964-21runrttasks20:01:380
121650380irq/29-eth0_g0_13-21kworker/0:123:33:480
121650380irq/29-eth0_g0_13-21kworker/0:122:15:450
121650380irq/29-eth0_g0_13-21kworker/0:121:54:090
121650380irq/29-eth0_g0_13-21kworker/0:100:03:230
121650380irq/29-eth0_g0_10656-21latency22:53:130
121650380irq/29-eth0_g0_0-21swapper/121:50:161
121380ksoftirqd/1121650irq/29-eth0_g0_23:28:431
121380ksoftirqd/1121650irq/29-eth0_g0_23:26:011
121380ksoftirqd/1121650irq/29-eth0_g0_20:39:161
121380ksoftirqd/1121650irq/29-eth0_g0_20:09:531
19976993721cyclictest29255-21timerandwakeup19:43:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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