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2025-12-16 - 06:00

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 Mon Dec 15, 2025 13:37:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2773721410sleep0121450irq/29-eth0_g0_12:29:450
1211140ksoftirqd/1121550irq/30-eth0_g0_09:25:051
198572960sleep0121550irq/30-eth0_g0_09:44:560
121930ksoftirqd/1121550irq/30-eth0_g0_09:52:521
121930ksoftirqd/1121550irq/30-eth0_g0_07:13:081
121850ksoftirqd/1121550irq/30-eth0_g0_12:01:391
121810ksoftirqd/1121550irq/30-eth0_g0_08:25:531
166372780sleep0121550irq/30-eth0_g0_11:43:440
297852680sleep1121550irq/30-eth0_g0_10:26:341
129172540sleep1121450irq/29-eth0_g0_11:28:121
121510ksoftirqd/1121550irq/30-eth0_g0_11:33:031
121510ksoftirqd/1121550irq/30-eth0_g0_09:46:461
121500ksoftirqd/1121550irq/30-eth0_g0_10:32:201
121500ksoftirqd/1121550irq/30-eth0_g0_09:23:491
121480ksoftirqd/1121550irq/30-eth0_g0_11:09:421
121550470irq/30-eth0_g0_121ksoftirqd/107:09:551
121470ksoftirqd/1121550irq/30-eth0_g0_11:03:411
121470ksoftirqd/1121550irq/30-eth0_g0_10:35:471
121470ksoftirqd/1121450irq/29-eth0_g0_09:40:070
277292460sleep1121450irq/29-eth0_g0_12:29:401
147252460chrt121450irq/29-eth0_g0_09:23:070
121460ksoftirqd/1121550irq/30-eth0_g0_12:37:211
121460ksoftirqd/1121550irq/30-eth0_g0_11:55:391
121460ksoftirqd/1121550irq/30-eth0_g0_10:47:121
121460ksoftirqd/1121450irq/29-eth0_g0_09:35:351
121450450irq/29-eth0_g0_1941-21runrttasks07:09:160
121450ksoftirqd/1121550irq/30-eth0_g0_10:21:511
121450ksoftirqd/1121550irq/30-eth0_g0_10:09:451
121450ksoftirqd/1121450irq/29-eth0_g0_12:21:360
121450ksoftirqd/1121450irq/29-eth0_g0_10:54:261
121450ksoftirqd/1121450irq/29-eth0_g0_10:54:261
121450ksoftirqd/1121450irq/29-eth0_g0_08:46:351
121450ksoftirqd/1121450irq/29-eth0_g0_08:23:271
121450ksoftirqd/1121450irq/29-eth0_g0_07:29:061
121550430irq/30-eth0_g0_1221-21kworker/1:209:32:331
121550420irq/30-eth0_g0_1221-21kworker/1:209:55:571
121450420irq/29-eth0_g0_1941-21runrttasks07:33:360
121420ksoftirqd/1121550irq/30-eth0_g0_09:52:260
121420ksoftirqd/1121450irq/29-eth0_g0_11:52:181
121450410irq/29-eth0_g0_13-21kworker/0:111:21:590
121450410irq/29-eth0_g0_13-21kworker/0:111:00:490
121450410irq/29-eth0_g0_13-21kworker/0:110:21:410
121450410irq/29-eth0_g0_121ksoftirqd/111:18:010
121550400irq/30-eth0_g0_1221-21kworker/1:210:13:121
121450400irq/29-eth0_g0_30187-21unixbench_singl12:37:430
121450400irq/29-eth0_g0_13-21kworker/0:112:13:520
121450400irq/29-eth0_g0_13-21kworker/0:111:06:540
121450400irq/29-eth0_g0_13-21kworker/0:110:45:090
121450400irq/29-eth0_g0_13-21kworker/0:109:28:580
121400ksoftirqd/1121550irq/30-eth0_g0_08:57:320
121400ksoftirqd/1121550irq/30-eth0_g0_08:57:320
121400ksoftirqd/1121550irq/30-eth0_g0_07:46:360
117450400irq/72-mmc0121ksoftirqd/107:54:271
241972390sleep0121550irq/30-eth0_g0_12:15:230
178552390sleep1121550irq/30-eth0_g0_11:48:401
1427399391cyclictest16372-21cat07:17:421
1427399391cyclictest11208-21diskmemload12:07:561
1427399391cyclictest10969-21unixbench_singl09:07:431
121550390irq/30-eth0_g0_1221-21kworker/1:210:19:041
121450390irq/29-eth0_g0_31ksoftirqd/008:07:420
121450390irq/29-eth0_g0_31ksoftirqd/008:07:420
121450390irq/29-eth0_g0_31ksoftirqd/007:22:360
121450390irq/29-eth0_g0_1941-21runrttasks10:10:220
121450390irq/29-eth0_g0_13-21kworker/0:111:12:220
121450390irq/29-eth0_g0_13-21kworker/0:110:27:170
121450390irq/29-eth0_g0_121ksoftirqd/110:01:371
121390ksoftirqd/1121550irq/30-eth0_g0_11:38:150
1427399381cyclictest9524-21ps09:02:391
1427399381cyclictest28481-21proc_pri08:07:401
1427399381cyclictest28481-21proc_pri08:07:401
1427399381cyclictest24381-21/usr/sbin/munin12:17:411
1427399381cyclictest17724-21unixbench_singl07:22:431
121550380irq/30-eth0_g0_121ksoftirqd/111:42:451
121550380irq/30-eth0_g0_0-21swapper/111:18:301
121550380irq/30-eth0_g0_0-21swapper/109:42:521
121450380irq/29-eth0_g0_4816-21chrt08:42:430
121450380irq/29-eth0_g0_31ksoftirqd/011:53:470
121450380irq/29-eth0_g0_26224-21unixbench_multi07:57:450
121450380irq/29-eth0_g0_1941-21runrttasks10:09:170
121450380irq/29-eth0_g0_1941-21runrttasks09:12:350
121450380irq/29-eth0_g0_13-21kworker/0:112:04:010
121450380irq/29-eth0_g0_13-21kworker/0:111:32:140
121450380irq/29-eth0_g0_13-21kworker/0:110:50:300
121450380irq/29-eth0_g0_13-21kworker/0:110:50:300
121450380irq/29-eth0_g0_13-21kworker/0:110:41:340
121450380irq/29-eth0_g0_0-21swapper/009:07:360
121450380irq/29-eth0_g0_0-21swapper/008:37:370
121380ksoftirqd/1121450irq/29-eth0_g0_08:39:561
121380ksoftirqd/1121450irq/29-eth0_g0_07:32:101
1427399372cyclictest26868-21sed08:02:341
1427399372cyclictest20876-21if_err_eth007:37:361
1427399371cyclictest11208-21diskmemload11:24:551
121550370irq/30-eth0_g0_1221-21kworker/1:212:30:391
121550370irq/30-eth0_g0_1221-21kworker/1:211:38:541
121550370irq/30-eth0_g0_1221-21kworker/1:210:44:081
121550370irq/30-eth0_g0_0-21swapper/110:56:281
121450370irq/29-eth0_g0_5914-21grep08:47:390
121450370irq/29-eth0_g0_4937-21df_abs10:57:330
121450370irq/29-eth0_g0_32086-21ntp_states08:22:380
121450370irq/29-eth0_g0_29771-21sendmail_mailqu08:12:400
121450370irq/29-eth0_g0_22851-21missed_timers09:57:370
121450370irq/29-eth0_g0_1941-21runrttasks08:28:400
121450370irq/29-eth0_g0_1941-21runrttasks07:40:340
121450370irq/29-eth0_g0_13-21kworker/0:111:49:090
121450370irq/29-eth0_g0_13-21kworker/0:110:38:300
121450370irq/29-eth0_g0_13-21kworker/0:110:30:530
121450370irq/29-eth0_g0_13-21kworker/0:110:16:190
121450370irq/29-eth0_g0_13-21kworker/0:109:36:010
121450370irq/29-eth0_g0_13-21kworker/0:109:16:570
121370ksoftirqd/1121550irq/30-eth0_g0_12:13:531
1427399362cyclictest78932sleep108:57:321
1427399362cyclictest78932sleep108:57:321
1427399362cyclictest22459-21awk07:42:431
1427399361cyclictest7133-21awk08:52:401
121550360irq/30-eth0_g0_26196-21taskset07:57:441
121550360irq/30-eth0_g0_26130-21rt-features12:22:411
121550360irq/30-eth0_g0_1221-21kworker/1:209:11:531
121550360irq/30-eth0_g0_0-21swapper/109:15:211
121450360irq/29-eth0_g0_21618-21latency_hist07:39:560
121450360irq/29-eth0_g0_1941-21runrttasks12:34:170
121450360irq/29-eth0_g0_1941-21runrttasks10:00:080
121450360irq/29-eth0_g0_1941-21runrttasks08:15:370
121450360irq/29-eth0_g0_1941-21runrttasks07:13:430
121450360irq/29-eth0_g0_1710-21egrep08:32:330
121450360irq/29-eth0_g0_13-21kworker/0:112:07:170
121450360irq/29-eth0_g0_13-21kworker/0:111:56:070
121450360irq/29-eth0_g0_13-21kworker/0:111:29:050
121360ksoftirqd/1121450irq/29-eth0_g0_08:19:561
1427399352cyclictest5101-21sort08:44:561
1427399351cyclictest23662-21rt-features07:47:401
1427399351cyclictest1957-21runrttasks08:32:361
121550350irq/30-eth0_g0_1221-21kworker/1:211:10:281
121450350irq/29-eth0_g0_1941-21runrttasks08:01:520
121450350irq/29-eth0_g0_1941-21runrttasks07:26:430
121450350irq/29-eth0_g0_16795-21/usr/sbin/munin09:32:390
121450350irq/29-eth0_g0_15795-21/usr/sbin/munin07:17:410
121450340irq/29-eth0_g0_7534-21munin-run08:54:560
121450340irq/29-eth0_g0_1941-21runrttasks07:50:010
121450330irq/29-eth0_g0_1941-21runrttasks09:01:150
121450330irq/29-eth0_g0_121ksoftirqd/108:12:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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