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2025-12-01 - 06:16

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 all highest latencies:
System rack3slot5s.osadl.org (updated Mon Dec 01, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3213121390sleep1121750irq/29-eth0_g0_23:24:321
3213121390sleep1121750irq/29-eth0_g0_23:24:321
3144821310sleep1121750irq/29-eth0_g0_22:04:101
1808521300sleep1121750irq/29-eth0_g0_21:30:161
2305921140sleep1121750irq/29-eth0_g0_23:01:171
104132990sleep1121850irq/30-eth0_g0_22:30:161
211932980sleep1121850irq/30-eth0_g0_00:17:331
121970ksoftirqd/1121850irq/30-eth0_g0_00:00:570
121970ksoftirqd/1121850irq/30-eth0_g0_00:00:570
63362940sleep0121750irq/29-eth0_g0_22:20:240
121930ksoftirqd/1121850irq/30-eth0_g0_21:35:531
38612920sleep0121850irq/30-eth0_g0_23:34:340
128112920sleep0121850irq/30-eth0_g0_20:00:050
121900ksoftirqd/1121850irq/30-eth0_g0_19:15:091
121880ksoftirqd/1121850irq/30-eth0_g0_22:09:510
121880ksoftirqd/1121850irq/30-eth0_g0_21:20:080
121870ksoftirqd/1121850irq/30-eth0_g0_22:44:310
121870ksoftirqd/1121850irq/30-eth0_g0_21:41:430
121850ksoftirqd/1121850irq/30-eth0_g0_23:15:111
121850ksoftirqd/1121850irq/30-eth0_g0_19:33:030
121850ksoftirqd/1121850irq/30-eth0_g0_19:33:030
121820ksoftirqd/1121850irq/30-eth0_g0_21:15:091
121820ksoftirqd/1121850irq/30-eth0_g0_20:50:111
121810ksoftirqd/1121850irq/30-eth0_g0_22:27:331
121810ksoftirqd/1121850irq/30-eth0_g0_20:30:121
121810ksoftirqd/1121850irq/30-eth0_g0_20:30:121
121800ksoftirqd/1121850irq/30-eth0_g0_20:10:160
270332790sleep0121750irq/29-eth0_g0_23:10:410
201492780sleep0121750irq/29-eth0_g0_00:15:030
121780ksoftirqd/1121850irq/30-eth0_g0_21:28:031
24052770sleep1121850irq/30-eth0_g0_19:35:041
223422740sleep0121850irq/30-eth0_g0_23:00:080
56802730sleep1121850irq/30-eth0_g0_23:38:371
119572720sleep0121850irq/30-eth0_g0_23:53:580
217852710sleep0121750irq/29-eth0_g0_22:59:240
121710ksoftirqd/1121850irq/30-eth0_g0_23:34:341
48982700sleep1121750irq/29-eth0_g0_22:17:511
121680ksoftirqd/1121850irq/30-eth0_g0_00:09:410
79972670sleep0121750irq/29-eth0_g0_22:25:100
121660ksoftirqd/1121850irq/30-eth0_g0_23:59:521
218302620sleep1121850irq/30-eth0_g0_21:40:081
265802610sleep0121850irq/30-eth0_g0_20:33:360
265802610sleep0121850irq/30-eth0_g0_20:33:360
150162590sleep1121850irq/30-eth0_g0_22:42:061
119842570chrt121750irq/29-eth0_g0_21:15:350
121510ksoftirqd/1121850irq/30-eth0_g0_23:40:120
130922500sleep0121750irq/29-eth0_g0_22:37:380
121500ksoftirqd/1121850irq/30-eth0_g0_21:57:321
121500ksoftirqd/1121850irq/30-eth0_g0_19:06:330
121500ksoftirqd/1121850irq/30-eth0_g0_00:20:010
317122490sleep1121850irq/30-eth0_g0_19:26:511
121490ksoftirqd/1121850irq/30-eth0_g0_20:05:080
121490ksoftirqd/1121750irq/29-eth0_g0_19:48:510
307012460sleep0121750irq/29-eth0_g0_22:01:130
121460ksoftirqd/1121850irq/30-eth0_g0_20:15:110
272222450sleep1121750irq/29-eth0_g0_23:11:261
121450ksoftirqd/1121850irq/30-eth0_g0_00:35:110
121450ksoftirqd/1121850irq/30-eth0_g0_00:26:320
121450ksoftirqd/1121750irq/29-eth0_g0_23:28:271
187312440sleep1121750irq/29-eth0_g0_00:10:591
121440ksoftirqd/1121850irq/30-eth0_g0_21:58:360
121440ksoftirqd/1121750irq/29-eth0_g0_23:50:141
121440ksoftirqd/1121750irq/29-eth0_g0_21:05:091
272652430chrt121750irq/29-eth0_g0_00:32:050
24221994338cyclictest28992-21latency_hist20:39:511
24221994237cyclictest18082-21seq20:12:391
210352420sleep1121750irq/29-eth0_g0_22:56:261
121850420irq/30-eth0_g0_6258-21runrttasks19:44:511
121850420irq/30-eth0_g0_470-21kworker/1:123:42:111
121850420irq/30-eth0_g0_470-21kworker/1:100:08:361
121850420irq/30-eth0_g0_2175-21runrttasks20:02:081
121750420irq/29-eth0_g0_32520-21if_err_eth023:25:040
121750420irq/29-eth0_g0_22578-21chrt19:05:071
24221994135cyclictest32245-21wc22:05:121
121850410irq/30-eth0_g0_470-21kworker/1:123:09:411
121850410irq/30-eth0_g0_470-21kworker/1:100:26:591
121410ksoftirqd/1121750irq/29-eth0_g0_20:25:131
24221994035cyclictest12281-21/usr/sbin/munin22:35:141
121850400irq/30-eth0_g0_470-21kworker/1:100:02:241
121850400irq/30-eth0_g0_470-21kworker/1:100:02:241
121750400irq/29-eth0_g0_2566-21runrttasks20:44:200
121400ksoftirqd/1121850irq/30-eth0_g0_22:19:330
2422199391cyclictest8863-21grep23:45:141
121750390irq/29-eth0_g0_1932-21runrttasks20:28:580
121750390irq/29-eth0_g0_13-21kworker/0:123:21:120
121750390irq/29-eth0_g0_13-21kworker/0:123:21:120
121390ksoftirqd/1121750irq/29-eth0_g0_20:40:051
41350380irq/23-fsldma-c15250-21/usr/sbin/munin21:25:060
250652380sleep0121750irq/29-eth0_g0_23:06:030
24221993833cyclictest13598-21ntp_states21:20:081
24221993833cyclictest10385-21munin-run19:54:511
24221993832cyclictest32662-21/usr/sbin/munin19:30:031
24221993832cyclictest32662-21/usr/sbin/munin19:30:031
24221993832cyclictest3195-21sort20:55:081
24221993832cyclictest24657-21memory19:10:091
2422199382cyclictest30090-21latency_hist00:39:521
2422199382cyclictest0-21swapper/120:20:131
121750380irq/29-eth0_g0_31ksoftirqd/020:50:040
121750380irq/29-eth0_g0_2566-21runrttasks23:55:030
121750380irq/29-eth0_g0_2566-21runrttasks21:09:590
121750380irq/29-eth0_g0_2175-21runrttasks21:49:040
121750380irq/29-eth0_g0_13-21kworker/0:121:36:160
121380ksoftirqd/1121750irq/29-eth0_g0_22:20:491
24221993731cyclictest2745-21runrttasks22:12:301
24221993731cyclictest18079-21entropy22:50:061
24221993730cyclictest32209-21runrttasks20:46:241
2422199371cyclictest29206-21grep19:20:161
121750370irq/29-eth0_g0_28900-21ntp_states19:20:120
121750370irq/29-eth0_g0_27734-21unixbench_singl20:35:150
121750370irq/29-eth0_g0_17313-21/usr/sbin/munin21:30:100
121750370irq/29-eth0_g0_1442-21sed22:10:020
121750370irq/29-eth0_g0_13-21kworker/0:100:10:130
121750370irq/29-eth0_g0_0-21swapper/020:45:140
121370ksoftirqd/116460-21chrt22:45:141
24221993632cyclictest26232-21unixbench_multi21:50:141
24221993630cyclictest6269-21runrttasks21:02:281
24221993630cyclictest27364-21runrttasks00:32:281
24221993630cyclictest23554-21runrttasks00:23:441
2422199362cyclictest15020-21netstat20:05:071
121850360irq/30-eth0_g0_9746-21unixbench_multi21:10:131
121850360irq/30-eth0_g0_470-21kworker/1:121:45:441
121750360irq/29-eth0_g0_8929-21chrt23:45:140
121750360irq/29-eth0_g0_8733-21cat19:50:090
121750360irq/29-eth0_g0_5068-21df_abs21:00:030
121750360irq/29-eth0_g0_4755-21unixbench_multi23:35:150
121750360irq/29-eth0_g0_26807-21ntp_kernel_err19:15:090
121750360irq/29-eth0_g0_2566-21runrttasks22:54:390
121750360irq/29-eth0_g0_25093-21unixbench_singl19:10:150
121750360irq/29-eth0_g0_1932-21runrttasks19:37:300
121750360irq/29-eth0_g0_13-21kworker/0:122:47:100
121750360irq/29-eth0_g0_13-21kworker/0:122:30:260
121360ksoftirqd/17796-21runrttasks19:47:471
121360ksoftirqd/1271632sleep021:53:310
121360ksoftirqd/1121850irq/30-eth0_g0_19:58:300
121360ksoftirqd/1121850irq/30-eth0_g0_19:44:320
121360ksoftirqd/1121750irq/29-eth0_g0_20:19:051
2422199351cyclictest11091-21awk19:55:111
121750350irq/29-eth0_g0_28942-21unixbench_singl23:15:140
121750350irq/29-eth0_g0_2566-21runrttasks21:04:550
121750350irq/29-eth0_g0_2566-21runrttasks20:23:030
121750350irq/29-eth0_g0_2566-21runrttasks19:27:490
121750350irq/29-eth0_g0_1932-21runrttasks20:55:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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