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2026-03-12 - 13:59

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 highest latencies:
System rack3slot5s.osadl.org (updated Thu Mar 12, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2434921360sleep1121650irq/29-eth0_g0_09:48:121
1869621120sleep0121650irq/29-eth0_g0_11:36:250
1869621120sleep0121650irq/29-eth0_g0_11:36:250
1211040ksoftirqd/1121750irq/30-eth0_g0_09:11:491
17312680chrt121750irq/30-eth0_g0_10:28:341
121650ksoftirqd/1121750irq/30-eth0_g0_09:26:190
121620ksoftirqd/1121650irq/29-eth0_g0_10:30:331
121620ksoftirqd/1121650irq/29-eth0_g0_10:30:331
90112570chrt121650irq/29-eth0_g0_08:45:100
252832570sleep1121750irq/30-eth0_g0_07:40:041
163612560sleep0121650irq/29-eth0_g0_11:27:440
121530ksoftirqd/1121650irq/29-eth0_g0_09:38:330
121510ksoftirqd/1121750irq/30-eth0_g0_11:46:131
121510ksoftirqd/1121650irq/29-eth0_g0_12:09:070
121500ksoftirqd/1121750irq/30-eth0_g0_11:40:050
211762490sleep0121750irq/30-eth0_g0_11:46:470
121490ksoftirqd/1121650irq/29-eth0_g0_10:05:431
155762480sleep0121650irq/29-eth0_g0_09:10:400
121480ksoftirqd/1121750irq/30-eth0_g0_12:27:521
121480ksoftirqd/1121750irq/30-eth0_g0_10:20:251
121480ksoftirqd/1121750irq/30-eth0_g0_10:10:311
121480ksoftirqd/1121750irq/30-eth0_g0_09:43:151
121480ksoftirqd/1121650irq/29-eth0_g0_09:44:150
121480ksoftirqd/1121650irq/29-eth0_g0_09:05:130
121750470irq/30-eth0_g0_250682sleep112:04:271
121460ksoftirqd/1121750irq/30-eth0_g0_11:58:421
121460ksoftirqd/1121750irq/30-eth0_g0_10:52:531
121750450irq/30-eth0_g0_470-21kworker/1:109:57:011
121440ksoftirqd/1121750irq/30-eth0_g0_09:25:001
121440ksoftirqd/1121650irq/29-eth0_g0_12:10:101
121440ksoftirqd/1121650irq/29-eth0_g0_09:38:201
121750430irq/30-eth0_g0_90322sleep010:57:510
121750430irq/30-eth0_g0_470-21kworker/1:112:39:391
121750430irq/30-eth0_g0_470-21kworker/1:111:34:001
121750430irq/30-eth0_g0_470-21kworker/1:111:00:031
121750430irq/30-eth0_g0_470-21kworker/1:110:35:401
121750430irq/30-eth0_g0_470-21kworker/1:110:04:431
121750430irq/30-eth0_g0_470-21kworker/1:109:31:481
121650430irq/29-eth0_g0_31ksoftirqd/009:21:120
121430ksoftirqd/1121650irq/29-eth0_g0_09:54:341
121750420irq/30-eth0_g0_470-21kworker/1:112:31:011
121750420irq/30-eth0_g0_470-21kworker/1:111:05:381
121750420irq/30-eth0_g0_470-21kworker/1:110:15:091
121650420irq/29-eth0_g0_27567-21latency_hist07:49:540
121650420irq/29-eth0_g0_0-21swapper/010:45:110
1780799411cyclictest5323-21taskset10:42:241
1780799411cyclictest13030-21grep09:00:151
1780799411cyclictest13030-21grep09:00:151
121750410irq/30-eth0_g0_470-21kworker/1:111:38:161
121750410irq/30-eth0_g0_470-21kworker/1:111:38:161
121750410irq/30-eth0_g0_470-21kworker/1:111:21:091
121650410irq/29-eth0_g0_17317-21unixbench_multi07:05:140
121650410irq/29-eth0_g0_13-21kworker/0:111:33:360
121650410irq/29-eth0_g0_0-21swapper/010:03:450
121410ksoftirqd/1121750irq/30-eth0_g0_12:25:070
121410ksoftirqd/1121750irq/30-eth0_g0_10:39:340
121410ksoftirqd/1121650irq/29-eth0_g0_10:56:231
121410ksoftirqd/1121650irq/29-eth0_g0_10:45:111
6072400sleep0121650irq/29-eth0_g0_12:35:120
1780799402cyclictest90762sleep108:45:121
1780799401cyclictest27029-21timerandwakeup07:45:141
121750400irq/30-eth0_g0_470-21kworker/1:109:19:341
121750400irq/30-eth0_g0_470-21kworker/1:109:19:341
121650400irq/29-eth0_g0_30667-21cat10:14:540
121650400irq/29-eth0_g0_13-21kworker/0:110:30:470
121650400irq/29-eth0_g0_13-21kworker/0:110:30:470
121650400irq/29-eth0_g0_13-21kworker/0:110:08:590
121650400irq/29-eth0_g0_13-21kworker/0:109:57:510
121400ksoftirqd/1121750irq/30-eth0_g0_08:39:440
1780799391cyclictest257442sleep112:05:141
121750390irq/30-eth0_g0_470-21kworker/1:111:43:511
121750390irq/30-eth0_g0_17037-21ntpdc07:05:091
121750390irq/30-eth0_g0_121ksoftirqd/111:50:331
121650390irq/29-eth0_g0_31ksoftirqd/009:53:160
121650390irq/29-eth0_g0_18538-21sed07:10:150
121650390irq/29-eth0_g0_13-21kworker/0:112:32:450
121650390irq/29-eth0_g0_13-21kworker/0:111:57:390
121650390irq/29-eth0_g0_13-21kworker/0:111:51:590
121650390irq/29-eth0_g0_13-21kworker/0:111:15:120
121650390irq/29-eth0_g0_13-21kworker/0:111:12:300
121650390irq/29-eth0_g0_13-21kworker/0:109:45:510
121390ksoftirqd/1121750irq/30-eth0_g0_10:42:570
121390ksoftirqd/1121750irq/30-eth0_g0_08:28:550
121390ksoftirqd/1121750irq/30-eth0_g0_08:21:470
121390ksoftirqd/1121750irq/30-eth0_g0_08:21:470
121390ksoftirqd/1121750irq/30-eth0_g0_08:13:520
296512380sleep0121750irq/30-eth0_g0_12:20:490
1780799382cyclictest14231-21tail09:05:131
1780799381cyclictest27889-21taskset07:50:071
121750380irq/30-eth0_g0_12144-21ntp_states11:10:101
121650380irq/29-eth0_g0_2029-21runrttasks09:00:300
121650380irq/29-eth0_g0_2029-21runrttasks09:00:300
121650380irq/29-eth0_g0_13-21kworker/0:111:05:180
121650380irq/29-eth0_g0_13-21kworker/0:111:04:030
121650380irq/29-eth0_g0_13-21kworker/0:110:54:480
121650380irq/29-eth0_g0_13-21kworker/0:110:26:550
121650380irq/29-eth0_g0_13-21kworker/0:110:21:110
121650380irq/29-eth0_g0_13-21kworker/0:109:33:540
121650380irq/29-eth0_g0_121ksoftirqd/112:03:280
121650380irq/29-eth0_g0_0-21swapper/010:18:270
1780799372cyclictest11512-21/usr/sbin/munin08:55:101
1780799371cyclictest4056-21ls08:25:081
1780799371cyclictest29411-21fgrep07:55:131
1780799371cyclictest22092-21sendmail_mailqu07:25:141
1780799371cyclictest19576-21proc_pri07:15:121
121750370irq/30-eth0_g0_470-21kworker/1:111:19:011
121750370irq/30-eth0_g0_121ksoftirqd/112:22:421
121650370irq/29-eth0_g0_29555-21unixbench_singl07:55:150
121650370irq/29-eth0_g0_28815-21latency_hist07:54:550
121650370irq/29-eth0_g0_13-21kworker/0:112:17:540
121650370irq/29-eth0_g0_13-21kworker/0:112:12:060
121650370irq/29-eth0_g0_13-21kworker/0:111:21:100
1780799362cyclictest324722sleep108:09:541
1780799361cyclictest20406-21sed07:20:051
1780799361cyclictest0-21swapper/108:41:341
1780799361cyclictest0-21swapper/107:30:041
121750360irq/30-eth0_g0_470-21kworker/1:111:29:391
121750360irq/30-eth0_g0_17649-21ntp_states09:20:111
121650360irq/29-eth0_g0_30559-21ps08:00:120
121650360irq/29-eth0_g0_2029-21runrttasks08:30:550
121650360irq/29-eth0_g0_2029-21runrttasks08:05:010
121650360irq/29-eth0_g0_13-21kworker/0:109:16:370
121650360irq/29-eth0_g0_13-21kworker/0:109:16:370
121650360irq/29-eth0_g0_10450-21sendmail_mailqu08:50:130
121360ksoftirqd/1121750irq/30-eth0_g0_12:15:151
17807993526cyclictest2029-21runrttasks07:13:171
1780799351cyclictest304722sleep108:00:091
1780799351cyclictest24458-21ps07:35:121
1780799351cyclictest0-21swapper/108:16:391
121650350irq/29-eth0_g0_25744-21taskset07:40:120
121650350irq/29-eth0_g0_22215-21unixbench_multi07:25:150
121650350irq/29-eth0_g0_21006-21unixbench_singl07:20:140
121650350irq/29-eth0_g0_2029-21runrttasks08:44:080
121650350irq/29-eth0_g0_2029-21runrttasks07:35:270
121650350irq/29-eth0_g0_19580-21ps07:15:120
121650350irq/29-eth0_g0_1589-21latency08:15:090
121650350irq/29-eth0_g0_11507-21netstat08:55:100
1780799342cyclictest32585-21cpu08:10:041
1780799341cyclictest6569-21missed_timers08:35:081
1780799331cyclictest10498-21timerandwakeup08:50:141
121750330irq/30-eth0_g0_5183-21entropy08:30:031
121650330irq/29-eth0_g0_0-21swapper/007:30:100
121650300irq/29-eth0_g0_3556-21runrttasks08:23:051
121650300irq/29-eth0_g0_3556-21runrttasks08:23:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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