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2025-10-20 - 20:36

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 Oct 20, 2025 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
50992720sleep1121550irq/30-eth0_g0_11:53:301
121620ksoftirqd/1121550irq/30-eth0_g0_10:41:300
261422550chrt121550irq/30-eth0_g0_11:06:000
121530ksoftirqd/1121550irq/30-eth0_g0_09:17:281
239672520sleep0121450irq/29-eth0_g0_10:57:550
121510ksoftirqd/1121550irq/30-eth0_g0_11:27:201
121550490irq/30-eth0_g0_1221-21kworker/1:210:32:281
121460ksoftirqd/1121450irq/29-eth0_g0_08:01:341
121450ksoftirqd/1121550irq/30-eth0_g0_10:41:081
121450ksoftirqd/1121550irq/30-eth0_g0_09:43:071
121450ksoftirqd/1121450irq/29-eth0_g0_10:12:191
261402440sleep1121550irq/30-eth0_g0_08:55:081
192652440sleep1121550irq/30-eth0_g0_08:25:171
159112440sleep0121450irq/29-eth0_g0_12:35:550
159112440sleep0121450irq/29-eth0_g0_12:35:550
121550440irq/30-eth0_g0_142152sleep110:18:341
121550440irq/30-eth0_g0_1221-21kworker/1:209:12:561
121440ksoftirqd/1121450irq/29-eth0_g0_08:15:381
121550430irq/30-eth0_g0_1221-21kworker/1:212:09:381
121550430irq/30-eth0_g0_121ksoftirqd/109:52:301
121450430irq/29-eth0_g0_31ksoftirqd/012:09:480
121450430irq/29-eth0_g0_13202-21sendmail_mailqu12:25:140
121430ksoftirqd/1121450irq/29-eth0_g0_10:20:061
249152420sleep0121450irq/29-eth0_g0_11:00:180
121550420irq/30-eth0_g0_419-21df11:35:071
121550420irq/30-eth0_g0_17394-21/usr/sbin/munin08:20:121
121450420irq/29-eth0_g0_31ksoftirqd/010:19:380
121450420irq/29-eth0_g0_13-21kworker/0:110:10:080
121420ksoftirqd/1121450irq/29-eth0_g0_12:35:111
121420ksoftirqd/1121450irq/29-eth0_g0_12:35:111
121420ksoftirqd/1121450irq/29-eth0_g0_09:57:091
121550410irq/30-eth0_g0_8991-21/usr/sbin/munin12:10:171
121550410irq/30-eth0_g0_504-21cat07:10:120
121550410irq/30-eth0_g0_504-21cat07:10:120
121450410irq/29-eth0_g0_13-21kworker/0:110:34:550
121450410irq/29-eth0_g0_13-21kworker/0:110:26:380
121450410irq/29-eth0_g0_13-21kworker/0:110:21:370
121450410irq/29-eth0_g0_13-21kworker/0:109:39:320
121450410irq/29-eth0_g0_13-21kworker/0:109:33:340
121450410irq/29-eth0_g0_0-21swapper/008:55:120
121450410irq/29-eth0_g0_0-21swapper/007:05:160
121410ksoftirqd/1121450irq/29-eth0_g0_11:00:171
3254299405cyclictest29570-21diskmemload11:33:311
3254299402cyclictest7203-21sed12:00:191
3254299402cyclictest2218-21/usr/sbin/munin09:30:031
228162400sleep1121550irq/30-eth0_g0_10:53:481
121550400irq/30-eth0_g0_31ksoftirqd/011:35:070
121550400irq/30-eth0_g0_1221-21kworker/1:212:17:021
121550400irq/30-eth0_g0_1221-21kworker/1:209:23:441
121550400irq/30-eth0_g0_1221-21kworker/1:209:23:441
121450400irq/29-eth0_g0_13-21kworker/0:112:21:090
121450400irq/29-eth0_g0_13-21kworker/0:112:04:440
121450400irq/29-eth0_g0_13-21kworker/0:111:48:150
121450400irq/29-eth0_g0_13-21kworker/0:111:32:240
121450400irq/29-eth0_g0_13-21kworker/0:111:24:240
121450400irq/29-eth0_g0_13-21kworker/0:111:11:200
121450400irq/29-eth0_g0_13-21kworker/0:110:54:350
121450400irq/29-eth0_g0_13-21kworker/0:110:08:310
121450400irq/29-eth0_g0_13-21kworker/0:109:17:250
121450400irq/29-eth0_g0_13-21kworker/0:109:10:200
121400ksoftirqd/1121550irq/30-eth0_g0_10:35:191
121400ksoftirqd/1121450irq/29-eth0_g0_11:46:471
121400ksoftirqd/1121450irq/29-eth0_g0_07:51:301
3254299391cyclictest3316-21grep07:20:181
295982390sleep129601-21proc_pri11:20:151
121550390irq/30-eth0_g0_1221-21kworker/1:210:46:171
121550390irq/30-eth0_g0_1221-21kworker/1:210:09:351
121450390irq/29-eth0_g0_31ksoftirqd/009:59:140
121450390irq/29-eth0_g0_205432sleep010:44:580
121450390irq/29-eth0_g0_13-21kworker/0:111:51:190
121450390irq/29-eth0_g0_13-21kworker/0:111:17:260
121450390irq/29-eth0_g0_13-21kworker/0:110:00:440
121450390irq/29-eth0_g0_13-21kworker/0:109:50:250
121450390irq/29-eth0_g0_13-21kworker/0:109:40:340
121450390irq/29-eth0_g0_13-21kworker/0:109:28:190
121450390irq/29-eth0_g0_13-21kworker/0:109:21:540
121450390irq/29-eth0_g0_13-21kworker/0:109:21:540
121450390irq/29-eth0_g0_121ksoftirqd/111:41:090
121450390irq/29-eth0_g0_121ksoftirqd/109:48:250
121390ksoftirqd/1121450irq/29-eth0_g0_12:20:531
121390ksoftirqd/1121450irq/29-eth0_g0_09:45:101
121390ksoftirqd/1121450irq/29-eth0_g0_09:26:031
121390ksoftirqd/1121450irq/29-eth0_g0_08:44:261
121390ksoftirqd/1121450irq/29-eth0_g0_07:40:481
3254299382cyclictest3964-21cat09:35:161
3254299381cyclictest25914-21ntp_offset11:05:541
121550380irq/30-eth0_g0_2464-21runrttasks11:41:251
121550380irq/30-eth0_g0_1221-21kworker/1:212:31:521
121550380irq/30-eth0_g0_1221-21kworker/1:212:29:051
121550380irq/30-eth0_g0_1221-21kworker/1:211:14:201
121550380irq/30-eth0_g0_1221-21kworker/1:210:03:081
121450380irq/29-eth0_g0_31071-21grep11:25:180
121450380irq/29-eth0_g0_1961-21runrttasks08:50:410
121450380irq/29-eth0_g0_1961-21runrttasks08:40:530
121450380irq/29-eth0_g0_1961-21runrttasks08:16:050
121450380irq/29-eth0_g0_1961-21runrttasks07:24:210
121450380irq/29-eth0_g0_14558-21tail12:30:180
121450380irq/29-eth0_g0_13-21kworker/0:112:10:290
121450380irq/29-eth0_g0_13-21kworker/0:111:59:150
121450380irq/29-eth0_g0_13-21kworker/0:110:35:350
121380ksoftirqd/131695-21/usr/sbin/munin07:05:111
121380ksoftirqd/1121450irq/29-eth0_g0_11:16:361
121380ksoftirqd/1121450irq/29-eth0_g0_10:28:521
121380ksoftirqd/1121450irq/29-eth0_g0_09:06:401
121380ksoftirqd/1121450irq/29-eth0_g0_09:00:041
121380ksoftirqd/1121450irq/29-eth0_g0_08:50:521
121380ksoftirqd/1121450irq/29-eth0_g0_08:06:201
121380ksoftirqd/1121450irq/29-eth0_g0_08:06:201
121380ksoftirqd/1121450irq/29-eth0_g0_07:57:401
121380ksoftirqd/1121450irq/29-eth0_g0_07:17:521
3254299371cyclictest5635-21cat11:55:121
3254299371cyclictest21039-21grep08:34:551
3254299371cyclictest15448-21ps08:10:421
121450370irq/29-eth0_g0_1961-21runrttasks08:37:380
121450370irq/29-eth0_g0_1961-21runrttasks07:42:370
121370ksoftirqd/1121450irq/29-eth0_g0_08:45:161
121370ksoftirqd/1121450irq/29-eth0_g0_08:35:111
3254299361cyclictest902-21taskset07:10:191
3254299361cyclictest902-21taskset07:10:191
3254299361cyclictest4428-21rt-features07:25:151
235832360sleep123594-21timerandwakeup10:55:191
121450360irq/29-eth0_g0_7038-21sed07:35:180
121450360irq/29-eth0_g0_24695-21latency_hist08:49:550
121450360irq/29-eth0_g0_1961-21runrttasks07:47:170
121450360irq/29-eth0_g0_1961-21runrttasks07:28:050
121450360irq/29-eth0_g0_1961-21runrttasks07:17:170
121450360irq/29-eth0_g0_14393-21unixbench_singl08:05:170
121450360irq/29-eth0_g0_14393-21unixbench_singl08:05:170
121450360irq/29-eth0_g0_0-21swapper/012:17:040
3254299351cyclictest0-21swapper/107:35:531
121450350irq/29-eth0_g0_28959-21rt-features09:05:140
121450350irq/29-eth0_g0_1961-21runrttasks08:02:160
121450350irq/29-eth0_g0_16106-21cat08:14:540
121450350irq/29-eth0_g0_10611-21swap07:50:170
121450340irq/29-eth0_g0_20483-21unixbench_multi08:30:180
121450340irq/29-eth0_g0_1961-21runrttasks07:59:380
121450340irq/29-eth0_g0_1961-21runrttasks07:32:310
121450340irq/29-eth0_g0_18063-21unixbench_multi08:20:290
3254299331cyclictest0-21swapper/107:45:071
121450330irq/29-eth0_g0_1961-21runrttasks09:03:330
121450330irq/29-eth0_g0_1961-21runrttasks08:26:430
121550320irq/30-eth0_g0_0-21swapper/107:32:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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