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2026-04-12 - 15:12

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 Sun Apr 12, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
90252740sleep03129650irq/29-eth0_g0_09:41:270
193092680chrt3129750irq/30-eth0_g0_10:24:280
168452630sleep13129750irq/30-eth0_g0_12:24:511
135552610sleep13129750irq/30-eth0_g0_07:49:171
203802580chrt3129750irq/30-eth0_g0_08:14:391
249622550sleep13129750irq/30-eth0_g0_10:46:531
239112520sleep13129750irq/30-eth0_g0_10:43:551
121510ksoftirqd/13129750irq/30-eth0_g0_11:59:531
121500ksoftirqd/13129750irq/30-eth0_g0_09:25:091
121490ksoftirqd/13129750irq/30-eth0_g0_12:20:591
159592480sleep03129650irq/29-eth0_g0_12:23:490
3784994713cyclictest4467-21cat07:09:401
121470ksoftirqd/13129750irq/30-eth0_g0_12:15:381
121470ksoftirqd/13129750irq/30-eth0_g0_09:34:511
121470ksoftirqd/13129750irq/30-eth0_g0_09:30:381
121470ksoftirqd/13129750irq/30-eth0_g0_09:30:381
121460ksoftirqd/13129650irq/29-eth0_g0_11:25:410
121450ksoftirqd/13129750irq/30-eth0_g0_09:18:541
121450ksoftirqd/13129650irq/29-eth0_g0_11:23:001
3129650440irq/29-eth0_g0_1875-21runrttasks12:12:500
3129750430irq/30-eth0_g0_31295-21kworker/1:112:32:241
3129750430irq/30-eth0_g0_13-21kworker/0:112:34:370
190752430sleep13129750irq/30-eth0_g0_12:34:391
121430ksoftirqd/13129650irq/29-eth0_g0_11:52:201
121430ksoftirqd/13129650irq/29-eth0_g0_11:37:210
121430ksoftirqd/13129650irq/29-eth0_g0_10:59:011
121430ksoftirqd/13129650irq/29-eth0_g0_09:43:061
3129750420irq/30-eth0_g0_31295-21kworker/1:112:09:361
3129750420irq/30-eth0_g0_121ksoftirqd/109:09:311
3129750420irq/30-eth0_g0_0-21swapper/011:29:330
3129650420irq/29-eth0_g0_121ksoftirqd/109:31:330
3129650420irq/29-eth0_g0_121ksoftirqd/109:31:330
128702420sleep03129650irq/29-eth0_g0_09:58:280
121420ksoftirqd/13129750irq/30-eth0_g0_12:00:160
121420ksoftirqd/13129650irq/29-eth0_g0_09:51:271
121420ksoftirqd/13129650irq/29-eth0_g0_09:19:331
378499411cyclictest15844-21taskset07:57:351
3129750410irq/30-eth0_g0_31295-21kworker/1:111:11:211
3129750410irq/30-eth0_g0_31295-21kworker/1:110:34:461
3129650410irq/29-eth0_g0_4471-21/usr/sbin/munin09:24:320
3129650410irq/29-eth0_g0_31ksoftirqd/012:30:400
3129650410irq/29-eth0_g0_31ksoftirqd/011:54:030
3129650410irq/29-eth0_g0_13-21kworker/0:112:04:500
3129650410irq/29-eth0_g0_13-21kworker/0:110:39:470
3129650410irq/29-eth0_g0_13-21kworker/0:110:15:300
3129650410irq/29-eth0_g0_13-21kworker/0:109:44:570
3129650410irq/29-eth0_g0_121ksoftirqd/112:17:020
3129650410irq/29-eth0_g0_121ksoftirqd/111:39:370
121410ksoftirqd/13129650irq/29-eth0_g0_10:13:500
3129750400irq/30-eth0_g0_31295-21kworker/1:111:33:081
3129750400irq/30-eth0_g0_31295-21kworker/1:109:45:431
3129750400irq/30-eth0_g0_121ksoftirqd/110:53:121
3129750400irq/30-eth0_g0_121ksoftirqd/109:59:441
3129650400irq/29-eth0_g0_523-21ntpdc11:19:340
3129650400irq/29-eth0_g0_31ksoftirqd/011:04:320
3129650400irq/29-eth0_g0_31ksoftirqd/010:59:170
3129650400irq/29-eth0_g0_27784-21grep08:44:390
3129650400irq/29-eth0_g0_26498-21unixbench_multi08:39:380
3129650400irq/29-eth0_g0_15395-21latency_hist10:09:180
3129650400irq/29-eth0_g0_13-21kworker/0:111:48:310
3129650400irq/29-eth0_g0_13-21kworker/0:110:46:020
3129650400irq/29-eth0_g0_13-21kworker/0:110:19:310
3129650400irq/29-eth0_g0_13-21kworker/0:109:10:470
3129650400irq/29-eth0_g0_121ksoftirqd/111:34:351
121400ksoftirqd/13129750irq/30-eth0_g0_09:21:230
378499392cyclictest12452-21grep09:54:381
378499391cyclictest5720-21grep11:39:391
378499391cyclictest287502sleep111:03:191
378499391cyclictest164912sleep107:59:361
3129750390irq/30-eth0_g0_31389-21unixbench_multi08:59:400
3129750390irq/30-eth0_g0_31295-21kworker/1:111:54:331
3129750390irq/30-eth0_g0_31295-21kworker/1:110:07:001
3129750390irq/30-eth0_g0_13-21kworker/0:110:01:570
3129650390irq/29-eth0_g0_9388-21grep11:54:390
3129650390irq/29-eth0_g0_13-21kworker/0:110:49:400
3129650390irq/29-eth0_g0_13-21kworker/0:109:18:410
3129650390irq/29-eth0_g0_11668-21ps07:39:360
3129650390irq/29-eth0_g0_0-21swapper/007:08:290
3129650390irq/29-eth0_g0_0-21swapper/007:08:290
121390ksoftirqd/13129750irq/30-eth0_g0_11:11:010
121390ksoftirqd/13129750irq/30-eth0_g0_09:51:410
121390ksoftirqd/13129650irq/29-eth0_g0_11:45:571
121390ksoftirqd/13129650irq/29-eth0_g0_08:50:041
378499381cyclictest8180-21sed07:24:381
378499381cyclictest664-21diskmemload10:29:321
378499381cyclictest18558-21tail10:19:391
3129750380irq/30-eth0_g0_312951kworker/1:111:25:251
3129750380irq/30-eth0_g0_31295-21kworker/1:111:18:591
3129750380irq/30-eth0_g0_31295-21kworker/1:110:18:321
3129750380irq/30-eth0_g0_31ksoftirqd/010:30:440
3129650380irq/29-eth0_g0_29785-21latency08:54:320
3129650380irq/29-eth0_g0_1875-21runrttasks08:15:070
3129650380irq/29-eth0_g0_13-21kworker/0:110:36:410
3129650380irq/29-eth0_g0_13-21kworker/0:109:39:000
3129650380irq/29-eth0_g0_10515-21find07:34:390
3129650380irq/29-eth0_g0_10515-21find07:34:390
121380ksoftirqd/13129750irq/30-eth0_g0_08:38:470
121380ksoftirqd/13129650irq/29-eth0_g0_08:29:041
121380ksoftirqd/13129650irq/29-eth0_g0_08:29:041
378499378cyclictest0-21swapper/111:06:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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