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2026-05-28 - 09:42

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 792 highest latencies:
System rack3slot5s.osadl.org (updated Thu May 28, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2725321710sleep1121650irq/29-eth0_g0_23:45:111
163662910sleep0121650irq/29-eth0_g0_23:01:250
178762770sleep0121650irq/29-eth0_g0_23:09:480
90642700sleep0121750irq/30-eth0_g0_22:31:350
188162640sleep0121650irq/29-eth0_g0_23:11:330
121610ksoftirqd/142932chrt00:25:060
116972610sleep0121650irq/29-eth0_g0_22:43:530
309892590chrt121750irq/30-eth0_g0_19:35:101
30282580sleep1121750irq/30-eth0_g0_00:20:041
234472560sleep1121650irq/29-eth0_g0_21:19:481
121560ksoftirqd/1121650irq/29-eth0_g0_20:50:040
317162550sleep1121750irq/30-eth0_g0_00:05:041
45392530sleep0121650irq/29-eth0_g0_22:14:520
71962510sleep0121650irq/29-eth0_g0_00:36:550
290842500sleep1121750irq/30-eth0_g0_23:55:001
121480ksoftirqd/1121750irq/30-eth0_g0_22:11:471
121480ksoftirqd/1121650irq/29-eth0_g0_00:20:570
22302470sleep0121650irq/29-eth0_g0_00:15:580
22302470sleep0121650irq/29-eth0_g0_00:15:580
147042470sleep1121750irq/30-eth0_g0_22:55:061
121460ksoftirqd/1121750irq/30-eth0_g0_23:50:361
42372450sleep0121750irq/30-eth0_g0_22:12:120
121450ksoftirqd/1121750irq/30-eth0_g0_20:10:030
311882440sleep0121650irq/29-eth0_g0_00:03:230
294032440sleep0121650irq/29-eth0_g0_21:43:060
294032440sleep0121650irq/29-eth0_g0_21:43:060
121750440irq/30-eth0_g0_1219-21kworker/1:222:52:341
121750440irq/30-eth0_g0_1219-21kworker/1:200:34:231
121440ksoftirqd/1121650irq/29-eth0_g0_21:21:121
121750430irq/30-eth0_g0_1219-21kworker/1:222:23:511
121750430irq/30-eth0_g0_1219-21kworker/1:222:18:431
121650430irq/29-eth0_g0_13-21kworker/0:122:00:020
121430ksoftirqd/1121750irq/30-eth0_g0_21:09:071
121430ksoftirqd/1121650irq/29-eth0_g0_00:02:361
121650420irq/29-eth0_g0_31ksoftirqd/023:26:420
121650420irq/29-eth0_g0_31ksoftirqd/023:17:180
121650420irq/29-eth0_g0_1964-21runrttasks19:06:510
121650420irq/29-eth0_g0_13-21kworker/0:122:05:580
121650420irq/29-eth0_g0_13-21kworker/0:100:12:260
318372410sleep0121650irq/29-eth0_g0_21:53:010
121750410irq/30-eth0_g0_92962sleep122:34:201
121750410irq/30-eth0_g0_0-21swapper/122:04:191
121750410irq/30-eth0_g0_0-21swapper/121:50:041
121650410irq/29-eth0_g0_31ksoftirqd/023:51:520
121650410irq/29-eth0_g0_13265-21if_err_eth022:50:000
121650410irq/29-eth0_g0_13-21kworker/0:123:48:120
121650410irq/29-eth0_g0_13-21kworker/0:122:45:280
121650410irq/29-eth0_g0_13-21kworker/0:122:37:420
121650410irq/29-eth0_g0_13-21kworker/0:121:27:010
121650410irq/29-eth0_g0_13-21kworker/0:121:20:260
121650410irq/29-eth0_g0_13-21kworker/0:121:11:220
121650410irq/29-eth0_g0_13-21kworker/0:100:31:000
121650410irq/29-eth0_g0_13-21kworker/0:100:06:020
121410ksoftirqd/1121750irq/30-eth0_g0_23:24:581
121410ksoftirqd/1121650irq/29-eth0_g0_20:59:581
121410ksoftirqd/1121650irq/29-eth0_g0_00:15:091
121410ksoftirqd/1121650irq/29-eth0_g0_00:15:091
121750400irq/30-eth0_g0_1219-21kworker/1:222:07:101
121750400irq/30-eth0_g0_121ksoftirqd/122:36:371
121650400irq/29-eth0_g0_13-21kworker/0:123:59:110
121650400irq/29-eth0_g0_13-21kworker/0:122:55:070
121650400irq/29-eth0_g0_13-21kworker/0:122:22:020
121650400irq/29-eth0_g0_121ksoftirqd/121:34:090
121400ksoftirqd/1121750irq/30-eth0_g0_00:24:581
121400ksoftirqd/1121650irq/29-eth0_g0_21:38:051
121400ksoftirqd/1121650irq/29-eth0_g0_20:55:021
121400ksoftirqd/1121650irq/29-eth0_g0_20:06:311
121400ksoftirqd/1121650irq/29-eth0_g0_20:06:311
121750390irq/30-eth0_g0_1219-21kworker/1:223:41:561
121750390irq/30-eth0_g0_121ksoftirqd/121:55:391
121650390irq/29-eth0_g0_31ksoftirqd/023:30:530
121650390irq/29-eth0_g0_31ksoftirqd/021:56:040
121650390irq/29-eth0_g0_31ksoftirqd/020:05:070
121650390irq/29-eth0_g0_31ksoftirqd/020:05:070
121650390irq/29-eth0_g0_13-21kworker/0:123:21:270
121650390irq/29-eth0_g0_13-21kworker/0:121:47:560
121390ksoftirqd/1121650irq/29-eth0_g0_21:34:421
121390ksoftirqd/1121650irq/29-eth0_g0_19:44:481
121750380irq/30-eth0_g0_6897-21timerandwakeup00:35:101
121750380irq/30-eth0_g0_1219-21kworker/1:223:35:271
121750380irq/30-eth0_g0_1219-21kworker/1:222:46:511
121750380irq/30-eth0_g0_121ksoftirqd/121:26:171
121750380irq/30-eth0_g0_0-21swapper/121:11:101
121650380irq/29-eth0_g0_13-21kworker/0:123:43:520
121650380irq/29-eth0_g0_13-21kworker/0:122:29:130
121650380irq/29-eth0_g0_13-21kworker/0:121:36:090
121650380irq/29-eth0_g0_13-21kworker/0:121:17:220
121380ksoftirqd/1121650irq/29-eth0_g0_19:18:531
121380ksoftirqd/1121650irq/29-eth0_g0_00:10:011
2418099371cyclictest7502-21taskset22:25:071
121750370irq/30-eth0_g0_23499-21ps19:05:061
121750370irq/30-eth0_g0_21015-21diskmemload23:20:041
121750370irq/30-eth0_g0_15025-21/usr/sbin/munin20:45:031
121750370irq/30-eth0_g0_1219-21kworker/1:223:12:101
121750370irq/30-eth0_g0_1219-21kworker/1:223:05:511
121750370irq/30-eth0_g0_1219-21kworker/1:221:43:501
121750370irq/30-eth0_g0_1219-21kworker/1:221:43:501
121650370irq/29-eth0_g0_8872-21ls20:19:490
121650370irq/29-eth0_g0_27142-21/usr/sbin/munin19:20:080
121650370irq/29-eth0_g0_141832sleep020:40:040
24180993630cyclictest1964-21runrttasks23:01:131
2418099361cyclictest21015-21diskmemload23:30:061
2418099361cyclictest102072sleep120:24:581
2418099361cyclictest0-21swapper/123:15:331
121750360irq/30-eth0_g0_1964-21runrttasks21:45:231
121650360irq/29-eth0_g0_48742chrt20:01:160
121650360irq/29-eth0_g0_31818-21irqstats19:40:020
121650360irq/29-eth0_g0_3086-21cat19:55:020
121650360irq/29-eth0_g0_1964-21runrttasks19:11:080
121650360irq/29-eth0_g0_13-21kworker/0:123:36:590
2418099351cyclictest94472sleep120:20:071
2418099351cyclictest283032sleep119:25:041
2418099351cyclictest0-21swapper/122:42:151
2418099351cyclictest0-21swapper/119:24:501
121650350irq/29-eth0_g0_29064-21latency_hist19:29:490
121650350irq/29-eth0_g0_1964-21runrttasks19:45:060
121650350irq/29-eth0_g0_1964-21runrttasks19:30:410
121650350irq/29-eth0_g0_1964-21runrttasks19:30:410
121650350irq/29-eth0_g0_19194-21ps21:00:090
121650350irq/29-eth0_g0_12954-21netstat20:35:040
121650350irq/29-eth0_g0_11755-21ntp_kernel_pll_20:30:050
2418099341cyclictest11202sleep119:45:331
2418099341cyclictest0-21swapper/120:53:331
2418099341cyclictest0-21swapper/120:40:071
121750340irq/30-eth0_g0_5232-21latency_hist20:04:491
121750340irq/30-eth0_g0_0-21swapper/119:10:101
121650340irq/29-eth0_g0_1977-21ntpdc19:50:060
121650340irq/29-eth0_g0_1964-21runrttasks19:19:320
121650340irq/29-eth0_g0_18106-21sed20:55:090
121650340irq/29-eth0_g0_15487-21proc_pri20:45:060
121650340irq/29-eth0_g0_0-21swapper/020:20:030
2418099331cyclictest0-21swapper/119:30:111
2418099331cyclictest0-21swapper/119:30:111
121750330irq/30-eth0_g0_6945-21proc_pri20:10:071
121650330irq/29-eth0_g0_0-21swapper/019:35:000
24180993218cyclictest3058-21irqstats19:55:011
24180993217cyclictest13051-21grep20:35:071
2418099321cyclictest8373-21unixbench_singl20:15:091
2418099321cyclictest18762sleep119:50:021
121750320irq/30-eth0_g0_12033-21unixbench_multi20:30:101
121650320irq/29-eth0_g0_0-21swapper/021:05:040
121650310irq/29-eth0_g0_1964-21runrttasks20:24:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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