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2025-12-21 - 19:57

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 376 highest latencies:
System rack3slot5s.osadl.org (updated Sun Dec 21, 2025 01:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
136921440sleep1121450irq/29-eth0_g0_00:31:111
649621170sleep0121450irq/29-eth0_g0_22:37:460
121830ksoftirqd/1121550irq/30-eth0_g0_19:57:091
196012610sleep0121450irq/29-eth0_g0_21:20:010
196012610sleep0121450irq/29-eth0_g0_21:20:010
269572570sleep0121450irq/29-eth0_g0_21:50:090
121540ksoftirqd/1121550irq/30-eth0_g0_22:12:081
105162520sleep0121550irq/30-eth0_g0_22:55:550
121490ksoftirqd/1121450irq/29-eth0_g0_23:40:201
121480ksoftirqd/1121450irq/29-eth0_g0_00:24:581
307042470sleep1121550irq/30-eth0_g0_22:06:011
284762470sleep1121550irq/30-eth0_g0_19:42:321
121450470irq/29-eth0_g0_121ksoftirqd/121:17:301
121550460irq/30-eth0_g0_121ksoftirqd/122:42:341
121460ksoftirqd/1121550irq/30-eth0_g0_23:21:051
121550450irq/30-eth0_g0_1221-21kworker/1:223:32:221
121450450irq/29-eth0_g0_19849-21unixbench_multi19:07:330
121450450irq/29-eth0_g0_1941-21runrttasks22:27:070
121550440irq/30-eth0_g0_121ksoftirqd/122:53:231
121440ksoftirqd/1121450irq/29-eth0_g0_20:22:241
121550430irq/30-eth0_g0_1221-21kworker/1:223:16:261
121550430irq/30-eth0_g0_1221-21kworker/1:221:41:521
121550430irq/30-eth0_g0_1221-21kworker/1:221:24:121
121550430irq/30-eth0_g0_1221-21kworker/1:221:24:121
121550430irq/30-eth0_g0_0-21swapper/100:24:341
121450430irq/29-eth0_g0_3339-21sed00:37:331
121430ksoftirqd/1121550irq/30-eth0_g0_21:11:481
121430ksoftirqd/1121450irq/29-eth0_g0_23:56:001
121430ksoftirqd/1121450irq/29-eth0_g0_22:19:071
140082420chrt14016-21latency_hist23:09:431
121550420irq/30-eth0_g0_1221-21kworker/1:222:22:301
121550420irq/30-eth0_g0_1221-21kworker/1:221:38:221
121550420irq/30-eth0_g0_121ksoftirqd/100:18:481
121450420irq/29-eth0_g0_31ksoftirqd/023:02:320
121450420irq/29-eth0_g0_1941-21runrttasks20:07:500
121450420irq/29-eth0_g0_13-21kworker/0:122:12:250
121420ksoftirqd/1121550irq/30-eth0_g0_00:39:430
121420ksoftirqd/1121450irq/29-eth0_g0_20:37:251
121550410irq/30-eth0_g0_121ksoftirqd/100:12:281
121450410irq/29-eth0_g0_31ksoftirqd/022:22:270
121450410irq/29-eth0_g0_31ksoftirqd/000:29:290
121450410irq/29-eth0_g0_1941-21runrttasks23:59:050
121450410irq/29-eth0_g0_13-21kworker/0:123:45:530
121450410irq/29-eth0_g0_13-21kworker/0:123:33:390
121450410irq/29-eth0_g0_13-21kworker/0:123:15:170
121450410irq/29-eth0_g0_13-21kworker/0:123:10:570
121450410irq/29-eth0_g0_13-21kworker/0:121:56:280
121450410irq/29-eth0_g0_121ksoftirqd/122:18:540
121410ksoftirqd/1121450irq/29-eth0_g0_19:09:431
121550400irq/30-eth0_g0_30176-21timerandwakeup22:02:321
121550400irq/30-eth0_g0_1221-21kworker/1:222:28:501
121550400irq/30-eth0_g0_121ksoftirqd/123:00:431
121550400irq/30-eth0_g0_0-21swapper/122:47:521
121450400irq/29-eth0_g0_13-21kworker/0:123:29:310
121450400irq/29-eth0_g0_13-21kworker/0:122:54:200
121450400irq/29-eth0_g0_13-21kworker/0:122:31:270
121450400irq/29-eth0_g0_13-21kworker/0:122:06:570
121450400irq/29-eth0_g0_13-21kworker/0:100:05:050
121450400irq/29-eth0_g0_0-21swapper/000:18:390
121400ksoftirqd/1121550irq/30-eth0_g0_23:42:300
121400ksoftirqd/1121550irq/30-eth0_g0_23:38:320
121400ksoftirqd/1121450irq/29-eth0_g0_19:12:301
2013699391cyclictest24737-21unixbench_multi23:52:341
2013699391cyclictest24737-21unixbench_multi23:52:341
121550390irq/30-eth0_g0_1221-21kworker/1:223:47:291
121550390irq/30-eth0_g0_1221-21kworker/1:222:34:471
121550390irq/30-eth0_g0_1221-21kworker/1:221:29:431
121550390irq/30-eth0_g0_0-21swapper/121:45:271
121450390irq/29-eth0_g0_7633-21df20:32:220
121450390irq/29-eth0_g0_3301-21unixbench_multi20:12:330
121450390irq/29-eth0_g0_31ksoftirqd/000:34:190
121450390irq/29-eth0_g0_13-21kworker/0:123:20:590
121450390irq/29-eth0_g0_13-21kworker/0:122:48:110
121450390irq/29-eth0_g0_13-21kworker/0:121:30:430
121450390irq/29-eth0_g0_13-21kworker/0:100:13:110
121450390irq/29-eth0_g0_11862-21grep20:47:310
121390ksoftirqd/1121450irq/29-eth0_g0_21:31:271
121390ksoftirqd/1121450irq/29-eth0_g0_20:11:121
121390ksoftirqd/1121450irq/29-eth0_g0_19:29:311
121550380irq/30-eth0_g0_1221-21kworker/1:223:14:151
121550380irq/30-eth0_g0_1221-21kworker/1:221:50:091
121550380irq/30-eth0_g0_121ksoftirqd/122:57:431
121550380irq/30-eth0_g0_0-21swapper/100:04:551
121450380irq/29-eth0_g0_21651-21tail21:27:320
121450380irq/29-eth0_g0_1941-21runrttasks20:43:530
121450380irq/29-eth0_g0_1941-21runrttasks19:45:520
121450380irq/29-eth0_g0_17054-21diskmemload00:02:290
121450380irq/29-eth0_g0_14073-21grep20:57:260
121450380irq/29-eth0_g0_13-21kworker/0:122:00:150
121450380irq/29-eth0_g0_13-21kworker/0:121:46:420
121450380irq/29-eth0_g0_13-21kworker/0:121:11:420
121380ksoftirqd/1121550irq/30-eth0_g0_22:42:320
121380ksoftirqd/1121550irq/30-eth0_g0_20:15:530
121380ksoftirqd/1121550irq/30-eth0_g0_00:21:540
121380ksoftirqd/1121450irq/29-eth0_g0_23:35:311
121380ksoftirqd/1121450irq/29-eth0_g0_20:50:091
121380ksoftirqd/1121450irq/29-eth0_g0_20:46:151
121380ksoftirqd/1121450irq/29-eth0_g0_20:25:041
121380ksoftirqd/1121450irq/29-eth0_g0_00:00:091
2013699371cyclictest23473-21cat19:22:361
2013699371cyclictest1639-21ethtool20:07:221
2013699371cyclictest16261-21grep21:07:221
121550370irq/30-eth0_g0_1221-21kworker/1:221:58:581
121450370irq/29-eth0_g0_31ksoftirqd/023:07:330
121450370irq/29-eth0_g0_31ksoftirqd/021:36:090
121450370irq/29-eth0_g0_31ksoftirqd/021:15:260
121450370irq/29-eth0_g0_28086-21missed_timers19:42:260
121450370irq/29-eth0_g0_1941-21runrttasks19:27:190
121450370irq/29-eth0_g0_1941-21runrttasks19:13:080
121450370irq/29-eth0_g0_13-21kworker/0:123:49:530
121450370irq/29-eth0_g0_13-21kworker/0:123:49:530
2013699362cyclictest295032sleep119:47:281
2013699361cyclictest586-21chrt20:02:271
2013699361cyclictest30610-21cat19:52:301
2013699361cyclictest13921-21cat20:57:231
121550360irq/30-eth0_g0_2013699cyclictest23:27:311
121450360irq/29-eth0_g0_31ksoftirqd/020:04:430
121450360irq/29-eth0_g0_31ksoftirqd/019:22:510
121450360irq/29-eth0_g0_27245-21unixbench_singl19:37:320
121450360irq/29-eth0_g0_1941-21runrttasks21:04:580
121450360irq/29-eth0_g0_1941-21runrttasks20:20:080
121450360irq/29-eth0_g0_1941-21runrttasks19:15:200
121450360irq/29-eth0_g0_15569-21unixbench_multi21:02:340
121450360irq/29-eth0_g0_13-21kworker/0:121:42:120
121360ksoftirqd/1121450irq/29-eth0_g0_20:44:131
2013699351cyclictest8216-21grep20:32:321
2013699351cyclictest5121-21cat22:32:341
2013699351cyclictest21919-21wc19:17:271
2013699351cyclictest15607-21head21:02:351
121550350irq/30-eth0_g0_27228-21unixbench_singl19:37:321
121450350irq/29-eth0_g0_31655-21iostat19:57:240
121450350irq/29-eth0_g0_30903-21unixbench_singl19:52:340
121450350irq/29-eth0_g0_25508-21if_err_eth019:32:240
121450350irq/29-eth0_g0_25508-21if_err_eth019:32:240
121450350irq/29-eth0_g0_1941-21runrttasks20:51:280
121450350irq/29-eth0_g0_1941-21runrttasks20:28:070
2013699341cyclictest4567-21grep20:17:321
2013699341cyclictest25777-21proc_pri19:32:301
2013699341cyclictest25777-21proc_pri19:32:301
121450340irq/29-eth0_g0_1941-21runrttasks20:37:490
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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