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2026-03-15 - 19:24

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 Sun Mar 15, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2047521240sleep1121750irq/30-eth0_g0_09:29:371
1893221010sleep1121650irq/29-eth0_g0_09:20:531
1211000ksoftirqd/1121750irq/30-eth0_g0_09:30:401
121830ksoftirqd/1121750irq/30-eth0_g0_12:39:001
121830ksoftirqd/1121650irq/29-eth0_g0_11:56:390
121830ksoftirqd/1121650irq/29-eth0_g0_11:56:390
121740ksoftirqd/1121750irq/30-eth0_g0_10:40:090
121720ksoftirqd/1121750irq/30-eth0_g0_09:42:041
121720ksoftirqd/1121750irq/30-eth0_g0_09:42:041
261852700sleep1121750irq/30-eth0_g0_07:39:581
168062690sleep1121650irq/29-eth0_g0_09:14:421
121630ksoftirqd/1121750irq/30-eth0_g0_12:28:391
137772590sleep0121750irq/30-eth0_g0_11:14:270
152752580sleep0121750irq/30-eth0_g0_11:19:570
121570ksoftirqd/1121650irq/29-eth0_g0_10:08:010
315032520sleep0121750irq/30-eth0_g0_10:14:400
121510ksoftirqd/1121750irq/30-eth0_g0_12:18:191
121510ksoftirqd/1121750irq/30-eth0_g0_11:25:401
121510ksoftirqd/1121750irq/30-eth0_g0_07:09:470
121510ksoftirqd/1121750irq/30-eth0_g0_07:09:470
326032500sleep1121750irq/30-eth0_g0_10:18:121
121500ksoftirqd/1121750irq/30-eth0_g0_12:07:141
121500ksoftirqd/1121750irq/30-eth0_g0_10:00:221
121750490irq/30-eth0_g0_121ksoftirqd/111:23:511
121750470irq/30-eth0_g0_0-21swapper/110:42:371
121470ksoftirqd/1121750irq/30-eth0_g0_11:49:511
121460ksoftirqd/1121750irq/30-eth0_g0_09:31:480
121460ksoftirqd/1121650irq/29-eth0_g0_07:17:301
121460ksoftirqd/1121650irq/29-eth0_g0_07:17:301
136722450sleep1121650irq/29-eth0_g0_11:13:151
121450ksoftirqd/1121650irq/29-eth0_g0_11:49:590
121450ksoftirqd/1121650irq/29-eth0_g0_10:27:501
121440ksoftirqd/1121750irq/30-eth0_g0_08:25:370
121440ksoftirqd/1121650irq/29-eth0_g0_11:06:001
121440ksoftirqd/1121650irq/29-eth0_g0_08:30:271
121650430irq/29-eth0_g0_2029-21runrttasks07:45:040
121650430irq/29-eth0_g0_2029-21runrttasks07:45:040
121430ksoftirqd/1121750irq/30-eth0_g0_09:48:210
121750420irq/30-eth0_g0_121ksoftirqd/112:09:491
121650420irq/29-eth0_g0_13-21kworker/0:110:26:040
121420ksoftirqd/1121650irq/29-eth0_g0_09:55:581
121420ksoftirqd/1121650irq/29-eth0_g0_09:53:121
121750410irq/30-eth0_g0_470-21kworker/1:110:36:101
121650410irq/29-eth0_g0_31ksoftirqd/011:25:030
121650410irq/29-eth0_g0_2029-21runrttasks08:41:540
121650410irq/29-eth0_g0_121ksoftirqd/111:03:290
121650410irq/29-eth0_g0_121ksoftirqd/107:45:051
121650410irq/29-eth0_g0_121ksoftirqd/107:45:051
121410ksoftirqd/1121750irq/30-eth0_g0_11:42:120
121410ksoftirqd/1121750irq/30-eth0_g0_10:16:140
121410ksoftirqd/1121750irq/30-eth0_g0_09:51:390
121410ksoftirqd/1121750irq/30-eth0_g0_08:22:430
121410ksoftirqd/1121750irq/30-eth0_g0_07:19:200
121410ksoftirqd/1121750irq/30-eth0_g0_07:19:200
121410ksoftirqd/1121650irq/29-eth0_g0_11:31:170
1858899401cyclictest8458-21unixbench_singl10:50:091
121750400irq/30-eth0_g0_121ksoftirqd/109:19:181
121650400irq/29-eth0_g0_299612sleep110:05:571
121650400irq/29-eth0_g0_2029-21runrttasks09:14:150
121650400irq/29-eth0_g0_13-21kworker/0:112:12:380
121650400irq/29-eth0_g0_13-21kworker/0:111:45:320
121650400irq/29-eth0_g0_13-21kworker/0:111:37:040
121650400irq/29-eth0_g0_13-21kworker/0:110:48:460
121650400irq/29-eth0_g0_13-21kworker/0:110:38:440
121650400irq/29-eth0_g0_13-21kworker/0:109:39:360
121650400irq/29-eth0_g0_11493-21/usr/sbin/munin08:50:090
121400ksoftirqd/1121750irq/30-eth0_g0_09:55:180
121400ksoftirqd/1121750irq/30-eth0_g0_08:37:210
121400ksoftirqd/1121750irq/30-eth0_g0_08:13:320
121400ksoftirqd/1121750irq/30-eth0_g0_08:02:130
121400ksoftirqd/1121750irq/30-eth0_g0_07:43:530
121400ksoftirqd/1121750irq/30-eth0_g0_07:26:330
121400ksoftirqd/1121650irq/29-eth0_g0_08:34:581
121400ksoftirqd/1121650irq/29-eth0_g0_07:50:061
1858899391cyclictest9265-21wc10:55:021
1858899391cyclictest30904-21latency_hist07:59:471
1858899391cyclictest15590-21diskmemload09:34:591
121750390irq/30-eth0_g0_31ksoftirqd/012:30:100
121750390irq/30-eth0_g0_24082-21netstat11:55:041
121750390irq/30-eth0_g0_24082-21netstat11:55:041
121750390irq/30-eth0_g0_12387-21/usr/sbin/munin08:55:041
121650390irq/29-eth0_g0_26589-21open_inodes12:05:040
121650390irq/29-eth0_g0_2029-21runrttasks07:54:060
121650390irq/29-eth0_g0_13-21kworker/0:111:05:380
121650390irq/29-eth0_g0_13-21kworker/0:110:55:450
121650390irq/29-eth0_g0_121ksoftirqd/109:20:200
121390ksoftirqd/1121750irq/30-eth0_g0_12:22:250
121390ksoftirqd/1121750irq/30-eth0_g0_12:04:050
121390ksoftirqd/1121750irq/30-eth0_g0_10:54:040
121390ksoftirqd/1121750irq/30-eth0_g0_10:21:270
121390ksoftirqd/1121750irq/30-eth0_g0_09:40:080
121390ksoftirqd/1121750irq/30-eth0_g0_09:40:080
121390ksoftirqd/1121750irq/30-eth0_g0_09:26:100
283252380sleep0121650irq/29-eth0_g0_10:00:040
1858899381cyclictest24314-21awk07:30:091
1858899381cyclictest2171-21lldpd12:34:091
121750380irq/30-eth0_g0_470-21kworker/1:110:59:581
121750380irq/30-eth0_g0_470-21kworker/1:110:32:301
121750380irq/30-eth0_g0_470-21kworker/1:110:10:321
121750380irq/30-eth0_g0_121ksoftirqd/111:29:501
121650380irq/29-eth0_g0_31ksoftirqd/010:33:380
121650380irq/29-eth0_g0_2029-21runrttasks12:35:200
121650380irq/29-eth0_g0_2029-21runrttasks07:11:320
121650380irq/29-eth0_g0_2029-21runrttasks07:11:320
121650380irq/29-eth0_g0_13-21kworker/0:112:17:210
121380ksoftirqd/1121750irq/30-eth0_g0_12:26:230
1858899377cyclictest121750irq/30-eth0_g0_12:22:551
18588993722cyclictest7194-21unixbench_multi10:45:081
1858899371cyclictest2883-21head08:15:101
1858899371cyclictest24975-21/usr/sbin/munin09:45:081
1858899371cyclictest21022sleep108:14:471
121750370irq/30-eth0_g0_121ksoftirqd/112:00:401
121750370irq/30-eth0_g0_121ksoftirqd/111:44:501
121650370irq/29-eth0_g0_9616-21df_abs08:44:570
121650370irq/29-eth0_g0_31ksoftirqd/007:35:040
121650370irq/29-eth0_g0_17371-21proc_pri09:15:060
121650370irq/29-eth0_g0_13-21kworker/0:111:15:590
1858899361cyclictest15590-21diskmemload11:15:131
1858899361cyclictest13927-21unixbench_singl09:00:081
121750360irq/30-eth0_g0_470-21kworker/1:110:20:211
121750360irq/30-eth0_g0_18580-21taskset07:09:461
121750360irq/30-eth0_g0_18580-21taskset07:09:461
121750360irq/30-eth0_g0_121ksoftirqd/111:38:521
121650360irq/29-eth0_g0_6506-21grep08:30:060
121650360irq/29-eth0_g0_2029-21runrttasks07:56:490
121650360irq/29-eth0_g0_14585-21sed09:04:590
121650360irq/29-eth0_g0_13481-21seq09:00:010
1858899352cyclictest10833-21cpu08:49:591
1858899352cyclictest0-21swapper/108:20:071
1858899351cyclictest4801-21seq08:24:591
1858899351cyclictest32318-21chrt08:04:591
1858899351cyclictest10146-21cat08:45:061
1858899351cyclictest0-21swapper/109:09:121
121750350irq/30-eth0_g0_0-21swapper/107:29:481
121650350irq/29-eth0_g0_2029-21runrttasks08:08:210
121650350irq/29-eth0_g0_2029-21runrttasks07:31:440
1858899341cyclictest87802sleep108:40:051
1858899341cyclictest21372-21chrt07:20:001
1858899341cyclictest0-21swapper/107:37:421
121750340irq/30-eth0_g0_470-21kworker/1:111:41:311
121650340irq/29-eth0_g0_2331-21df_abs08:15:000
1858899331cyclictest19354-21unixbench_singl07:10:131
1858899331cyclictest19354-21unixbench_singl07:10:131
121650330irq/29-eth0_g0_2029-21runrttasks07:21:010
121650330irq/29-eth0_g0_12269-21cat08:55:020
1858899301cyclictest0-21swapper/108:01:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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