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2026-03-06 - 21:55

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 Fri Mar 06, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1224421630sleep0121450irq/29-eth0_g0_10:55:470
872621410sleep0121550irq/30-eth0_g0_10:42:340
3215121120sleep1121550irq/30-eth0_g0_12:19:441
234172680sleep0121450irq/29-eth0_g0_11:42:390
76442550sleep0121450irq/29-eth0_g0_08:25:060
121510ksoftirqd/1121550irq/30-eth0_g0_12:02:361
121510ksoftirqd/1121550irq/30-eth0_g0_09:41:081
272542470sleep0121550irq/30-eth0_g0_11:59:390
161802470sleep0121450irq/29-eth0_g0_11:13:540
121470ksoftirqd/1121550irq/30-eth0_g0_10:48:271
121470ksoftirqd/1121550irq/30-eth0_g0_10:48:271
121470ksoftirqd/1121450irq/29-eth0_g0_11:07:521
121450460irq/29-eth0_g0_121ksoftirqd/107:05:181
121460ksoftirqd/1121550irq/30-eth0_g0_11:24:331
121460ksoftirqd/1121550irq/30-eth0_g0_10:52:021
121460ksoftirqd/1121550irq/30-eth0_g0_09:13:131
121460ksoftirqd/1121450irq/29-eth0_g0_11:23:460
121460ksoftirqd/1121450irq/29-eth0_g0_10:03:510
121450ksoftirqd/1121550irq/30-eth0_g0_12:26:261
121450ksoftirqd/1121550irq/30-eth0_g0_12:24:191
121550440irq/30-eth0_g0_1227-21kworker/1:211:01:401
121550440irq/30-eth0_g0_1227-21kworker/1:210:40:471
121450440irq/29-eth0_g0_31ksoftirqd/009:28:210
121450440irq/29-eth0_g0_20715-21unixbench_multi07:05:170
121550430irq/30-eth0_g0_1227-21kworker/1:212:10:491
121550430irq/30-eth0_g0_1227-21kworker/1:210:32:431
121450430irq/29-eth0_g0_13-21kworker/0:109:49:560
121450430irq/29-eth0_g0_13-21kworker/0:109:49:560
121450430irq/29-eth0_g0_121ksoftirqd/112:16:490
121430ksoftirqd/1121550irq/30-eth0_g0_10:18:040
121430ksoftirqd/1121450irq/29-eth0_g0_11:48:421
121430ksoftirqd/1121450irq/29-eth0_g0_09:48:131
269602420sleep1121450irq/29-eth0_g0_11:56:141
121550420irq/30-eth0_g0_1227-21kworker/1:211:36:521
121450420irq/29-eth0_g0_2023-21runrttasks09:19:590
121450420irq/29-eth0_g0_13-21kworker/0:109:58:590
121420ksoftirqd/1121450irq/29-eth0_g0_10:47:280
121420ksoftirqd/1121450irq/29-eth0_g0_10:47:280
73202410sleep0121550irq/30-eth0_g0_10:35:250
121550410irq/30-eth0_g0_1227-21kworker/1:212:35:171
121550410irq/30-eth0_g0_1227-21kworker/1:211:53:171
121450410irq/29-eth0_g0_31ksoftirqd/009:40:090
121450410irq/29-eth0_g0_13-21kworker/0:112:38:180
121450410irq/29-eth0_g0_121ksoftirqd/112:01:090
121450410irq/29-eth0_g0_0-21swapper/009:34:590
121410ksoftirqd/1121550irq/30-eth0_g0_11:32:200
2120799401cyclictest20617-21wc11:30:091
2120799401cyclictest1055-21grep10:10:091
121550400irq/30-eth0_g0_1227-21kworker/1:211:11:241
121550400irq/30-eth0_g0_1227-21kworker/1:210:37:481
121550400irq/30-eth0_g0_1227-21kworker/1:209:35:431
121450400irq/29-eth0_g0_2023-21runrttasks11:46:200
121450400irq/29-eth0_g0_13-21kworker/0:109:18:240
121400ksoftirqd/1121550irq/30-eth0_g0_09:32:470
121400ksoftirqd/1121450irq/29-eth0_g0_12:05:221
121400ksoftirqd/1121450irq/29-eth0_g0_12:05:221
2120799391cyclictest28109-21unixbench_singl07:35:111
2120799391cyclictest23654-21sort07:19:491
2120799391cyclictest21840-21grep09:24:491
121550390irq/30-eth0_g0_121ksoftirqd/111:25:281
121550390irq/30-eth0_g0_121ksoftirqd/111:25:281
121450390irq/29-eth0_g0_9135-21unixbench_singl08:30:110
121450390irq/29-eth0_g0_31ksoftirqd/010:29:580
121450390irq/29-eth0_g0_13-21kworker/0:112:33:160
121450390irq/29-eth0_g0_13-21kworker/0:112:22:440
121390ksoftirqd/1121550irq/30-eth0_g0_09:04:130
2120799381cyclictest461-21unixbench_multi07:55:091
2120799381cyclictest22532-21grep09:25:101
121550380irq/30-eth0_g0_1227-21kworker/1:210:15:161
121550380irq/30-eth0_g0_1227-21kworker/1:209:15:161
121450380irq/29-eth0_g0_31ksoftirqd/011:25:320
121450380irq/29-eth0_g0_31ksoftirqd/011:25:320
121450380irq/29-eth0_g0_31ksoftirqd/010:21:280
121450380irq/29-eth0_g0_1436-21grep12:25:060
121450380irq/29-eth0_g0_13-21kworker/0:110:08:480
121450380irq/29-eth0_g0_13-21kworker/0:109:45:050
121450380irq/29-eth0_g0_121ksoftirqd/110:23:081
2120799372cyclictest3540-21egrep08:09:591
2120799371cyclictest5316-21sendmail_mailtr08:15:081
2120799371cyclictest32166-21seq10:05:091
2120799371cyclictest31737-21sed07:50:091
2120799371cyclictest29729-21chrt09:55:071
2120799371cyclictest28234-21sed09:50:021
2120799371cyclictest28234-21sed09:50:021
121550370irq/30-eth0_g0_1227-21kworker/1:212:33:411
121550370irq/30-eth0_g0_1227-21kworker/1:211:42:281
121550370irq/30-eth0_g0_1227-21kworker/1:211:15:511
121450370irq/29-eth0_g0_31717-21unixbench_multi07:50:090
121450370irq/29-eth0_g0_18443-21chrt09:10:030
121450370irq/29-eth0_g0_1456-21ntpdc08:00:061
121450370irq/29-eth0_g0_13940-21unixbench_multi08:50:090
121450370irq/29-eth0_g0_13-21kworker/0:112:12:300
121450370irq/29-eth0_g0_13-21kworker/0:112:04:500
121450370irq/29-eth0_g0_13-21kworker/0:112:04:500
121450370irq/29-eth0_g0_13-21kworker/0:111:50:450
121450370irq/29-eth0_g0_13-21kworker/0:110:59:510
121450370irq/29-eth0_g0_13-21kworker/0:110:14:320
2120799362cyclictest9082-21tail08:30:101
2120799362cyclictest21680-21ntpdc07:10:051
2120799362cyclictest2042-21/usr/sbin/munin07:33:111
2120799362cyclictest14946-21/usr/sbin/munin08:55:071
2120799361cyclictest6450-21ps08:20:071
2120799361cyclictest30992-21wc10:00:081
2120799361cyclictest2322-21egrep08:04:591
2120799361cyclictest13717-21taskset08:50:051
2120799361cyclictest0-21swapper/108:25:091
121550360irq/30-eth0_g0_11598-21df_abs10:55:001
121450360irq/29-eth0_g0_51522sleep010:28:410
121450360irq/29-eth0_g0_26122-21latency_hist07:29:490
121450360irq/29-eth0_g0_26122-21latency_hist07:29:490
121450360irq/29-eth0_g0_23867-21df07:20:020
121450360irq/29-eth0_g0_2023-21runrttasks08:22:280
121450360irq/29-eth0_g0_2023-21runrttasks07:31:100
121450360irq/29-eth0_g0_13-21kworker/0:111:34:520
121450360irq/29-eth0_g0_13-21kworker/0:111:15:010
121450360irq/29-eth0_g0_13-21kworker/0:110:52:100
2120799352cyclictest28777-21df_inode07:40:001
2120799352cyclictest16057-21memory09:00:051
2120799351cyclictest30272-21/usr/sbin/munin07:45:101
2120799351cyclictest10114-21ps08:35:071
121550350irq/30-eth0_g0_1227-21kworker/1:210:28:161
121450350irq/29-eth0_g0_9776-21df_abs08:35:000
121450350irq/29-eth0_g0_22985-21processes07:15:070
121450350irq/29-eth0_g0_2023-21runrttasks09:05:070
121450350irq/29-eth0_g0_2023-21runrttasks08:47:200
121450350irq/29-eth0_g0_2023-21runrttasks07:47:540
121450350irq/29-eth0_g0_2023-21runrttasks07:10:580
121450350irq/29-eth0_g0_15162-21unixbench_multi08:55:110
121450350irq/29-eth0_g0_11421-21sendmail_mailtr08:40:070
121350ksoftirqd/1121450irq/29-eth0_g0_08:45:111
2120799342cyclictest25158-21if_eth007:25:011
2120799342cyclictest25158-21if_eth007:25:011
2120799341cyclictest24034-21missed_timers07:20:081
2120799341cyclictest18110-21diskmemload09:30:061
2120799341cyclictest175762sleep109:05:101
121450340irq/29-eth0_g0_3476-21latency_hist08:09:490
121450340irq/29-eth0_g0_29768-21latency_hist07:44:490
121450340irq/29-eth0_g0_28104-21unixbench_singl07:35:110
121450340irq/29-eth0_g0_2023-21runrttasks08:11:580
121450340irq/29-eth0_g0_2023-21runrttasks07:55:340
121450340irq/29-eth0_g0_13-21kworker/0:111:05:290
121450340irq/29-eth0_g0_0-21swapper/008:00:030
121450320irq/29-eth0_g0_0-21swapper/008:15:070
121320ksoftirqd/112027-21date08:44:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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