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2026-07-01 - 17:34

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 376 highest latencies:
System rack3slot5s.osadl.org (updated Wed Jul 01, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
778821670sleep1121750irq/30-eth0_g0_12:36:241
583221110sleep1121650irq/29-eth0_g0_10:16:061
302012860sleep1121650irq/29-eth0_g0_11:54:091
302012860sleep1121650irq/29-eth0_g0_11:54:091
121710ksoftirqd/1121750irq/30-eth0_g0_12:28:360
15942650sleep0121750irq/30-eth0_g0_07:43:450
121620ksoftirqd/1121750irq/30-eth0_g0_09:02:321
121600ksoftirqd/1121750irq/30-eth0_g0_12:14:280
94302520sleep1121750irq/30-eth0_g0_10:30:081
107942520chrt121750irq/30-eth0_g0_08:22:291
121750510irq/30-eth0_g0_121ksoftirqd/111:43:401
121510ksoftirqd/1121750irq/30-eth0_g0_07:56:131
121750500irq/30-eth0_g0_121ksoftirqd/112:18:261
63662490sleep1121750irq/30-eth0_g0_12:29:061
121750470irq/30-eth0_g0_121ksoftirqd/107:18:461
228192460sleep1121650irq/29-eth0_g0_11:23:561
121650460irq/29-eth0_g0_7701-21runrttasks12:35:220
121650460irq/29-eth0_g0_169812sleep011:02:230
121650460irq/29-eth0_g0_169812sleep011:02:230
121460ksoftirqd/1121650irq/29-eth0_g0_09:20:321
321212450sleep0121750irq/30-eth0_g0_09:51:090
121750450irq/30-eth0_g0_1219-21kworker/1:211:15:481
121650450irq/29-eth0_g0_13-21kworker/0:110:23:550
121450ksoftirqd/1121750irq/30-eth0_g0_07:48:471
121450ksoftirqd/1121750irq/30-eth0_g0_07:18:390
121450ksoftirqd/1121650irq/29-eth0_g0_08:25:351
121450ksoftirqd/1121650irq/29-eth0_g0_07:16:381
121750440irq/30-eth0_g0_121ksoftirqd/109:23:401
121440ksoftirqd/1121750irq/30-eth0_g0_10:19:500
121440ksoftirqd/1121650irq/29-eth0_g0_09:30:131
254012430sleep1121650irq/29-eth0_g0_11:35:251
121750430irq/30-eth0_g0_1573-21netstat09:58:411
121750430irq/30-eth0_g0_1219-21kworker/1:212:18:561
121750430irq/30-eth0_g0_1219-21kworker/1:211:30:481
121750430irq/30-eth0_g0_1219-21kworker/1:209:35:211
121650430irq/29-eth0_g0_22612-21sendmail_mailqu11:23:440
121650430irq/29-eth0_g0_13-21kworker/0:110:43:010
121650430irq/29-eth0_g0_121ksoftirqd/111:32:510
121650430irq/29-eth0_g0_121ksoftirqd/110:15:520
121430ksoftirqd/1121650irq/29-eth0_g0_10:39:551
121750420irq/30-eth0_g0_1219-21kworker/1:211:01:221
121750420irq/30-eth0_g0_1219-21kworker/1:211:01:221
121650420irq/29-eth0_g0_121ksoftirqd/109:43:461
121650420irq/29-eth0_g0_0-21swapper/011:08:410
121420ksoftirqd/1121750irq/30-eth0_g0_10:33:441
121420ksoftirqd/1121650irq/29-eth0_g0_10:13:111
121750410irq/30-eth0_g0_1219-21kworker/1:210:03:441
121750410irq/30-eth0_g0_121ksoftirqd/110:20:411
121750410irq/30-eth0_g0_121ksoftirqd/109:39:261
121650410irq/29-eth0_g0_1964-21runrttasks09:27:350
121650410irq/29-eth0_g0_13-21kworker/0:111:40:040
121650410irq/29-eth0_g0_13-21kworker/0:111:08:200
121650410irq/29-eth0_g0_13-21kworker/0:110:48:260
121650410irq/29-eth0_g0_13-21kworker/0:109:23:080
121650410irq/29-eth0_g0_121ksoftirqd/112:26:540
121650410irq/29-eth0_g0_0-21swapper/007:06:120
121410ksoftirqd/1121650irq/29-eth0_g0_09:15:041
4082400sleep0420-21sendmail_mailqu07:38:460
121750400irq/30-eth0_g0_1219-21kworker/1:211:03:391
121750400irq/30-eth0_g0_1219-21kworker/1:210:49:311
121750400irq/30-eth0_g0_1219-21kworker/1:209:10:091
121750400irq/30-eth0_g0_121ksoftirqd/112:08:391
121750400irq/30-eth0_g0_121ksoftirqd/109:51:451
121650400irq/29-eth0_g0_2488299cyclictest10:06:460
121650400irq/29-eth0_g0_13-21kworker/0:109:44:220
121650400irq/29-eth0_g0_13-21kworker/0:109:42:050
121400ksoftirqd/1121750irq/30-eth0_g0_12:01:590
121400ksoftirqd/1121750irq/30-eth0_g0_11:47:510
121400ksoftirqd/1121750irq/30-eth0_g0_11:22:480
121400ksoftirqd/1121750irq/30-eth0_g0_09:58:360
121400ksoftirqd/1121750irq/30-eth0_g0_09:58:270
121400ksoftirqd/1121750irq/30-eth0_g0_09:58:270
121400ksoftirqd/1121750irq/30-eth0_g0_09:33:130
121400ksoftirqd/1121750irq/30-eth0_g0_09:15:480
121400ksoftirqd/1121750irq/30-eth0_g0_08:23:370
121400ksoftirqd/1121750irq/30-eth0_g0_08:07:030
121400ksoftirqd/1121750irq/30-eth0_g0_08:01:561
121400ksoftirqd/1121750irq/30-eth0_g0_08:01:561
121400ksoftirqd/1121650irq/29-eth0_g0_11:51:590
121400ksoftirqd/1121650irq/29-eth0_g0_08:56:561
121400ksoftirqd/1121650irq/29-eth0_g0_08:46:191
121750390irq/30-eth0_g0_24196-21proc_pri07:03:451
121750390irq/30-eth0_g0_1219-21kworker/1:209:58:071
121750390irq/30-eth0_g0_1219-21kworker/1:209:58:071
121750390irq/30-eth0_g0_121ksoftirqd/107:23:491
121650390irq/29-eth0_g0_7932-21grep08:08:470
121650390irq/29-eth0_g0_7932-21grep08:08:470
121650390irq/29-eth0_g0_2488299cyclictest12:06:460
121650390irq/29-eth0_g0_1964-21runrttasks09:09:410
121650390irq/29-eth0_g0_1964-21runrttasks08:20:560
121650390irq/29-eth0_g0_14026-21sendmail_mailqu10:48:460
121650390irq/29-eth0_g0_13-21kworker/0:110:34:410
121650390irq/29-eth0_g0_13-21kworker/0:109:37:550
121650390irq/29-eth0_g0_121ksoftirqd/112:05:211
121650390irq/29-eth0_g0_121ksoftirqd/107:28:450
121390ksoftirqd/1121750irq/30-eth0_g0_12:19:350
121390ksoftirqd/1121750irq/30-eth0_g0_12:08:560
121390ksoftirqd/1121750irq/30-eth0_g0_11:34:540
121390ksoftirqd/1121750irq/30-eth0_g0_11:14:220
121390ksoftirqd/1121750irq/30-eth0_g0_10:29:150
121390ksoftirqd/1121750irq/30-eth0_g0_08:47:460
121750380irq/30-eth0_g0_0-21swapper/111:50:361
121650380irq/29-eth0_g0_31253-21df_abs07:33:390
121650380irq/29-eth0_g0_13-21kworker/0:111:57:080
121650380irq/29-eth0_g0_13-21kworker/0:111:57:080
121650380irq/29-eth0_g0_13-21kworker/0:110:56:050
121650380irq/29-eth0_g0_13-21kworker/0:110:08:530
121380ksoftirqd/1121650irq/29-eth0_g0_11:20:111
121380ksoftirqd/1121650irq/29-eth0_g0_10:25:221
121380ksoftirqd/1121650irq/29-eth0_g0_08:40:121
121380ksoftirqd/1121650irq/29-eth0_g0_08:37:531
121750370irq/30-eth0_g0_21481-21head09:03:481
121750370irq/30-eth0_g0_21481-21head09:03:481
121750370irq/30-eth0_g0_1219-21kworker/1:212:27:311
121750370irq/30-eth0_g0_0-21swapper/110:44:401
121650370irq/29-eth0_g0_21425-21sed09:03:470
121650370irq/29-eth0_g0_21425-21sed09:03:470
121650370irq/29-eth0_g0_1964-21runrttasks09:01:120
121650370irq/29-eth0_g0_12841-21unixbench_multi08:28:480
121650370irq/29-eth0_g0_1219-21kworker/1:210:53:471
121650370irq/29-eth0_g0_121ksoftirqd/108:48:491
121650370irq/29-eth0_g0_121ksoftirqd/108:08:451
121650370irq/29-eth0_g0_121ksoftirqd/108:08:451
121750360irq/30-eth0_g0_1219-21kworker/1:211:42:331
121750360irq/30-eth0_g0_121ksoftirqd/111:58:341
121650360irq/29-eth0_g0_31ksoftirqd/008:48:400
121650360irq/29-eth0_g0_1964-21runrttasks08:55:480
121650360irq/29-eth0_g0_1964-21runrttasks07:16:350
121650360irq/29-eth0_g0_1964-21runrttasks07:13:070
121650360irq/29-eth0_g0_14067-21unixbench_multi08:33:480
121650360irq/29-eth0_g0_1219-21kworker/1:211:08:521
121650360irq/29-eth0_g0_0-21swapper/007:23:460
121750350irq/30-eth0_g0_1964-21runrttasks08:16:071
121650350irq/29-eth0_g0_8808-21memory08:13:390
121650350irq/29-eth0_g0_3773-21/usr/sbin/munin07:53:390
121650350irq/29-eth0_g0_14810-21df_inode08:38:390
121650350irq/29-eth0_g0_0-21swapper/007:48:410
121750340irq/30-eth0_g0_31438-21missed_timers07:33:421
121650340irq/29-eth0_g0_25438-21proc_pri07:08:451
121650340irq/29-eth0_g0_0-21swapper/007:58:410
121650340irq/29-eth0_g0_0-21swapper/007:58:410
121330ksoftirqd/1121650irq/29-eth0_g0_07:38:271
121750320irq/30-eth0_g0_0-21swapper/108:03:431
121320ksoftirqd/1121650irq/29-eth0_g0_08:31:131
121320ksoftirqd/1121650irq/29-eth0_g0_07:31:211
121650310irq/29-eth0_g0_0-21swapper/107:43:381
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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