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2025-12-26 - 21:42

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 Dec 26, 2025 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
265021580sleep1121450irq/29-eth0_g0_22:28:461
121760ksoftirqd/1121550irq/30-eth0_g0_00:15:011
325982740sleep0121550irq/30-eth0_g0_00:30:170
305262730sleep1121550irq/30-eth0_g0_00:20:431
121710ksoftirqd/1121550irq/30-eth0_g0_23:35:160
121710ksoftirqd/1121550irq/30-eth0_g0_23:35:160
99792630sleep0121450irq/29-eth0_g0_22:58:400
308922630sleep1121550irq/30-eth0_g0_22:10:211
308922630sleep1121550irq/30-eth0_g0_22:10:211
113092620sleep0121550irq/30-eth0_g0_23:04:550
323732590sleep1121550irq/30-eth0_g0_22:15:581
264772540sleep0121550irq/30-eth0_g0_21:53:280
121530ksoftirqd/1121550irq/30-eth0_g0_23:27:071
121530ksoftirqd/1121550irq/30-eth0_g0_22:41:200
1868299521cyclictest10246-21df23:00:131
121500ksoftirqd/1121550irq/30-eth0_g0_19:50:170
121500ksoftirqd/1121550irq/30-eth0_g0_00:15:241
252792490sleep1121450irq/29-eth0_g0_21:48:481
180842490sleep1121550irq/30-eth0_g0_23:30:241
121450480irq/29-eth0_g0_26312-21if_eth019:40:150
121480ksoftirqd/1121450irq/29-eth0_g0_23:44:121
121470ksoftirqd/1185802chrt19:08:560
121470ksoftirqd/1121450irq/29-eth0_g0_21:26:340
121470ksoftirqd/1121450irq/29-eth0_g0_21:26:340
121460ksoftirqd/1121450irq/29-eth0_g0_20:10:371
121450ksoftirqd/1121550irq/30-eth0_g0_21:21:590
121450440irq/29-eth0_g0_31ksoftirqd/023:34:470
121450440irq/29-eth0_g0_31ksoftirqd/000:25:310
121450440irq/29-eth0_g0_121ksoftirqd/122:05:330
121450440irq/29-eth0_g0_0-21swapper/023:30:010
121440ksoftirqd/1121450irq/29-eth0_g0_19:50:271
1868299433cyclictest8145-21ntp_states22:50:211
121550430irq/30-eth0_g0_470-21kworker/1:122:47:481
121450430irq/29-eth0_g0_13-21kworker/0:123:17:040
121430ksoftirqd/1121550irq/30-eth0_g0_22:25:120
121450420irq/29-eth0_g0_31ksoftirqd/021:59:060
121450420irq/29-eth0_g0_28770-21iostat00:15:150
121450420irq/29-eth0_g0_13-21kworker/0:121:40:150
121420ksoftirqd/1121450irq/29-eth0_g0_21:33:481
121550410irq/30-eth0_g0_470-21kworker/1:123:54:561
121550410irq/30-eth0_g0_470-21kworker/1:123:48:451
121550410irq/30-eth0_g0_470-21kworker/1:122:31:301
121550410irq/30-eth0_g0_13-21kworker/0:122:35:230
121550410irq/30-eth0_g0_121ksoftirqd/123:18:321
121550410irq/30-eth0_g0_121ksoftirqd/122:37:001
121450410irq/29-eth0_g0_31ksoftirqd/023:21:140
121450410irq/29-eth0_g0_18679-21munin-run19:10:001
121450410irq/29-eth0_g0_13-21kworker/0:123:46:550
121450410irq/29-eth0_g0_13-21kworker/0:123:12:440
121450410irq/29-eth0_g0_121ksoftirqd/123:41:180
121450410irq/29-eth0_g0_121ksoftirqd/121:11:380
1868299401cyclictest23132-21unixbench_singl19:25:221
1868299401cyclictest23132-21unixbench_singl19:25:221
121550400irq/30-eth0_g0_470-21kworker/1:123:36:131
121550400irq/30-eth0_g0_470-21kworker/1:123:36:131
121550400irq/30-eth0_g0_470-21kworker/1:123:07:031
121550400irq/30-eth0_g0_121ksoftirqd/121:25:571
121550400irq/30-eth0_g0_121ksoftirqd/121:25:571
121550400irq/30-eth0_g0_121ksoftirqd/121:14:331
121550400irq/30-eth0_g0_121ksoftirqd/100:32:161
121550400irq/30-eth0_g0_121ksoftirqd/100:05:121
121450400irq/29-eth0_g0_31ksoftirqd/000:35:190
121450400irq/29-eth0_g0_31ksoftirqd/000:05:580
121450400irq/29-eth0_g0_27843-21gzip19:45:190
121450400irq/29-eth0_g0_13-21kworker/0:123:57:060
121450400irq/29-eth0_g0_13-21kworker/0:122:52:490
121450400irq/29-eth0_g0_13-21kworker/0:122:15:000
121450400irq/29-eth0_g0_13-21kworker/0:122:15:000
121450400irq/29-eth0_g0_13-21kworker/0:121:45:480
121450400irq/29-eth0_g0_13-21kworker/0:100:03:230
121400ksoftirqd/1121450irq/29-eth0_g0_21:36:221
121400ksoftirqd/1121450irq/29-eth0_g0_20:09:071
282152390sleep0121450irq/29-eth0_g0_00:12:180
1868299391cyclictest25574-21unixbench_singl19:35:251
121550390irq/30-eth0_g0_470-21kworker/1:123:55:511
121550390irq/30-eth0_g0_470-21kworker/1:122:56:491
121550390irq/30-eth0_g0_470-21kworker/1:122:44:301
121550390irq/30-eth0_g0_121ksoftirqd/123:12:491
121450390irq/29-eth0_g0_3476-21unixbench_multi22:30:220
121450390irq/29-eth0_g0_31ksoftirqd/022:16:350
121450390irq/29-eth0_g0_148262sleep021:05:160
121450390irq/29-eth0_g0_13-21kworker/0:123:08:230
121450390irq/29-eth0_g0_13-21kworker/0:122:46:570
121450390irq/29-eth0_g0_13-21kworker/0:122:03:430
121450390irq/29-eth0_g0_121ksoftirqd/122:24:171
121450390irq/29-eth0_g0_0-21swapper/020:40:010
121390ksoftirqd/1121450irq/29-eth0_g0_22:08:161
121390ksoftirqd/1121450irq/29-eth0_g0_21:50:181
121390ksoftirqd/1121450irq/29-eth0_g0_20:50:011
1868299382cyclictest27547-21iostat19:45:141
121550380irq/30-eth0_g0_121ksoftirqd/121:20:111
121450380irq/29-eth0_g0_21113-21sendmail_mailqu21:30:210
121450380irq/29-eth0_g0_13-21kworker/0:123:50:070
121450380irq/29-eth0_g0_13-21kworker/0:122:22:240
121450380irq/29-eth0_g0_13-21kworker/0:121:35:180
121450380irq/29-eth0_g0_121ksoftirqd/100:35:381
1868299371cyclictest6173-21latency20:30:171
1868299371cyclictest31379-21ntp_offset00:25:181
1868299371cyclictest27388-21grep21:55:241
1868299371cyclictest20668-21unixbench_singl19:15:231
1868299371cyclictest15105-21grep21:05:211
1868299371cyclictest11164-21seq20:50:171
1868299371cyclictest0-21swapper/120:21:521
121550370irq/30-eth0_g0_470-21kworker/1:121:18:561
121550370irq/30-eth0_g0_0-21swapper/122:00:031
121450370irq/29-eth0_g0_30521-21seq00:20:400
121450370irq/29-eth0_g0_1868299cyclictest20:35:241
1868299361cyclictest18961-21chrt19:10:131
1868299361cyclictest13497-21cat21:00:161
1868299361cyclictest12014-21/usr/sbin/munin20:55:141
121550360irq/30-eth0_g0_470-21kworker/1:100:00:131
121550360irq/30-eth0_g0_0-21swapper/123:22:251
121550360irq/30-eth0_g0_0-21swapper/121:43:561
121450360irq/29-eth0_g0_32632-21open_inodes20:05:190
121450360irq/29-eth0_g0_1933-21runrttasks21:01:560
121450360irq/29-eth0_g0_13-21kworker/0:121:15:310
121450360irq/29-eth0_g0_0-21swapper/020:26:290
121450360irq/29-eth0_g0_0-21swapper/019:32:120
121360ksoftirqd/1121450irq/29-eth0_g0_19:42:401
1868299351cyclictest2799-21/usr/sbin/munin20:15:241
121450350irq/29-eth0_g0_3854-21chrt20:20:170
121450350irq/29-eth0_g0_30398-21unixbench_multi19:55:200
121450350irq/29-eth0_g0_2768-21grep20:15:230
121450350irq/29-eth0_g0_22965-21rt-features19:25:200
121450350irq/29-eth0_g0_22965-21rt-features19:25:200
121450350irq/29-eth0_g0_21453-21latency19:20:150
121450350irq/29-eth0_g0_19464-21unixbench_singl19:10:210
121450350irq/29-eth0_g0_1933-21runrttasks20:53:530
121450350irq/29-eth0_g0_1702-21unixbench_singl20:10:250
121450350irq/29-eth0_g0_0-21swapper/020:04:020
1868299341cyclictest5366-21unixbench_singl20:25:231
1868299341cyclictest0-21swapper/119:24:531
121550340irq/30-eth0_g0_1933-21runrttasks20:40:280
121450340irq/29-eth0_g0_0-21swapper/020:56:510
121340ksoftirqd/1121450irq/29-eth0_g0_19:30:581
121450330irq/29-eth0_g0_6493-21timerandwakeup20:30:230
121450330irq/29-eth0_g0_20649-21unixbench_multi19:15:230
121450330irq/29-eth0_g0_2055-21snmpd19:36:210
121450330irq/29-eth0_g0_1868299cyclictest19:55:201
121450330irq/29-eth0_g0_0-21swapper/020:45:210
18682993218cyclictest8926-21timerandwakeup20:40:221
121450300irq/29-eth0_g0_31120-21df20:00:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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