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2026-07-18 - 21:03

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 Sat Jul 18, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121830ksoftirqd/1121750irq/30-eth0_g0_07:39:171
121820ksoftirqd/1121650irq/29-eth0_g0_09:57:580
121820ksoftirqd/1121650irq/29-eth0_g0_09:57:580
215762810chrt121650irq/29-eth0_g0_08:53:011
299992770sleep1121750irq/30-eth0_g0_07:13:051
129762750sleep0121750irq/30-eth0_g0_10:28:520
129762750sleep0121750irq/30-eth0_g0_10:28:520
312602720chrt121750irq/30-eth0_g0_09:32:541
121670ksoftirqd/1325242sleep011:48:200
310352610sleep1121750irq/30-eth0_g0_09:32:441
261372550sleep0121750irq/30-eth0_g0_09:12:430
14062550sleep1121750irq/30-eth0_g0_09:43:011
121510ksoftirqd/1121750irq/30-eth0_g0_10:03:271
121500ksoftirqd/1121750irq/30-eth0_g0_07:57:590
121490ksoftirqd/1121750irq/30-eth0_g0_09:38:351
121490ksoftirqd/1121750irq/30-eth0_g0_09:07:450
121490ksoftirqd/1121650irq/29-eth0_g0_11:26:360
121480ksoftirqd/1121750irq/30-eth0_g0_10:08:551
121480ksoftirqd/1121750irq/30-eth0_g0_10:01:391
121480ksoftirqd/1121750irq/30-eth0_g0_10:01:391
65862470sleep0121750irq/30-eth0_g0_12:17:320
65862470sleep0121750irq/30-eth0_g0_12:17:320
28008994712cyclictest13430-21grep08:18:061
121470ksoftirqd/1121750irq/30-eth0_g0_11:27:411
121470ksoftirqd/1121750irq/30-eth0_g0_11:05:571
121470ksoftirqd/1121750irq/30-eth0_g0_10:37:151
121470ksoftirqd/1121750irq/30-eth0_g0_09:50:351
40762460sleep1121650irq/29-eth0_g0_12:06:471
131012460sleep1121750irq/30-eth0_g0_10:30:201
131012460sleep1121750irq/30-eth0_g0_10:30:201
121460ksoftirqd/1121750irq/30-eth0_g0_12:30:061
121460ksoftirqd/1121750irq/30-eth0_g0_10:17:161
121460ksoftirqd/1121750irq/30-eth0_g0_09:56:321
121460ksoftirqd/1121650irq/29-eth0_g0_12:17:361
121460ksoftirqd/1121650irq/29-eth0_g0_12:17:361
121460ksoftirqd/1121650irq/29-eth0_g0_08:15:351
121460ksoftirqd/1121650irq/29-eth0_g0_07:30:171
121450ksoftirqd/1121650irq/29-eth0_g0_07:25:321
112882450sleep0121650irq/29-eth0_g0_12:35:150
45092440sleep0121650irq/29-eth0_g0_09:55:040
121750440irq/30-eth0_g0_1219-21kworker/1:212:10:531
121650440irq/29-eth0_g0_31ksoftirqd/012:01:310
121650440irq/29-eth0_g0_27509-21unixbench_multi07:03:060
121650440irq/29-eth0_g0_1928-21sshd10:13:070
121440ksoftirqd/1121750irq/30-eth0_g0_11:35:211
121750430irq/30-eth0_g0_1219-21kworker/1:211:22:001
121430ksoftirqd/1121750irq/30-eth0_g0_11:30:581
121430ksoftirqd/1121650irq/29-eth0_g0_10:20:300
32712420sleep0121650irq/29-eth0_g0_09:49:530
121750420irq/30-eth0_g0_1219-21kworker/1:212:01:001
121650420irq/29-eth0_g0_31ksoftirqd/009:20:410
121650420irq/29-eth0_g0_24913-21diskmemload10:34:270
121650420irq/29-eth0_g0_121ksoftirqd/110:41:460
121420ksoftirqd/1121750irq/30-eth0_g0_12:10:200
121750410irq/30-eth0_g0_1219-21kworker/1:211:49:591
121650410irq/29-eth0_g0_31ksoftirqd/009:47:450
121650410irq/29-eth0_g0_31ksoftirqd/009:37:550
121650410irq/29-eth0_g0_13-21kworker/0:111:57:040
121650410irq/29-eth0_g0_13-21kworker/0:111:35:220
121410ksoftirqd/1121750irq/30-eth0_g0_09:24:021
121410ksoftirqd/1121650irq/29-eth0_g0_11:17:451
121650400irq/29-eth0_g0_3381-21/usr/sbin/munin07:38:020
121650400irq/29-eth0_g0_31ksoftirqd/011:46:240
121650400irq/29-eth0_g0_31ksoftirqd/010:43:060
121650400irq/29-eth0_g0_27702-21seq11:29:130
121650400irq/29-eth0_g0_13-21kworker/0:109:15:190
121650400irq/29-eth0_g0_1219-21kworker/1:212:21:501
121400ksoftirqd/1121750irq/30-eth0_g0_11:13:220
121400ksoftirqd/1121650irq/29-eth0_g0_10:45:321
2800899392cyclictest14704-21grep08:23:071
2800899391cyclictest7782sleep111:52:591
2800899391cyclictest30846-21cat11:43:011
2800899391cyclictest0-21swapper/107:21:481
121750390irq/30-eth0_g0_121ksoftirqd/110:19:371
121650390irq/29-eth0_g0_31ksoftirqd/010:58:000
121650390irq/29-eth0_g0_13-21kworker/0:109:33:190
121650390irq/29-eth0_g0_11264-21sed10:23:010
121390ksoftirqd/1121750irq/30-eth0_g0_12:32:060
121390ksoftirqd/1121750irq/30-eth0_g0_11:38:480
121390ksoftirqd/1121750irq/30-eth0_g0_11:03:220
121390ksoftirqd/1121750irq/30-eth0_g0_09:30:040
121390ksoftirqd/1121750irq/30-eth0_g0_09:00:090
121390ksoftirqd/1121750irq/30-eth0_g0_08:34:100
121390ksoftirqd/1121750irq/30-eth0_g0_08:29:180
121390ksoftirqd/1121750irq/30-eth0_g0_07:30:010
121390ksoftirqd/1121750irq/30-eth0_g0_07:10:160
121390ksoftirqd/1121650irq/29-eth0_g0_11:10:570
2800899381cyclictest18936-21sed10:53:071
121750380irq/30-eth0_g0_1219-21kworker/1:212:33:361
121750380irq/30-eth0_g0_1219-21kworker/1:209:12:561
121750380irq/30-eth0_g0_0-21swapper/111:01:281
121750380irq/30-eth0_g0_0-21swapper/110:49:551
121750380irq/30-eth0_g0_0-21swapper/110:39:481
121650380irq/29-eth0_g0_9818-21unixbench_singl08:03:070
121650380irq/29-eth0_g0_17205-21df10:47:580
121650380irq/29-eth0_g0_13-21kworker/0:112:06:320
121650380irq/29-eth0_g0_13-21kworker/0:111:21:370
121380ksoftirqd/1121750irq/30-eth0_g0_12:18:440
121380ksoftirqd/1121750irq/30-eth0_g0_08:53:270
121380ksoftirqd/1121750irq/30-eth0_g0_08:51:260
121380ksoftirqd/1121650irq/29-eth0_g0_09:08:021
117450380irq/72-mmc00-21swapper/107:34:001
2800899372cyclictest9413-21memory08:03:001
2800899372cyclictest28002-21fgrep09:18:051
2800899372cyclictest19043-21df_inode08:42:561
2800899372cyclictest16595-21df_inode08:32:551
2800899371cyclictest29858-21sendmail_mailqu11:38:051
2800899371cyclictest22670-21unixbench_singl11:08:091
2800899371cyclictest21243-21chrt08:52:451
121650370irq/29-eth0_g0_1964-21runrttasks10:06:380
121650370irq/29-eth0_g0_13-21kworker/0:109:26:080
121370ksoftirqd/1121650irq/29-eth0_g0_07:46:241
2800899362cyclictest11191-21irqstats10:23:001
2800899361cyclictest10512-21/usr/sbin/munin08:08:001
121750360irq/30-eth0_g0_1219-21kworker/1:212:22:521
121650360irq/29-eth0_g0_4758-21find07:43:060
121650360irq/29-eth0_g0_27538-21unixbench_singl07:03:061
121650360irq/29-eth0_g0_1964-21runrttasks10:08:000
121650360irq/29-eth0_g0_1964-21runrttasks08:13:230
121650360irq/29-eth0_g0_13967-21latency_hist08:22:450
121650360irq/29-eth0_g0_13-21kworker/0:110:53:020
121650360irq/29-eth0_g0_10810-21runrttasks08:08:060
799350migration/031135-21timerandwakeup07:18:050
2800899351cyclictest7351-21grep07:53:061
2800899351cyclictest7351-21grep07:53:061
2800899351cyclictest28326-21interrupts07:08:001
2800899351cyclictest24099-21cat09:03:001
2800899351cyclictest18331-21unixbench_multi08:38:071
121750350irq/30-eth0_g0_23232-21unixbench_singl08:58:101
121650350irq/29-eth0_g0_6073-21tail07:48:070
121650350irq/29-eth0_g0_31754-21/usr/sbin/munin07:22:550
121650350irq/29-eth0_g0_1964-21runrttasks08:39:200
121650350irq/29-eth0_g0_1964-21runrttasks07:37:420
121650350irq/29-eth0_g0_13-21kworker/0:112:25:150
121650350irq/29-eth0_g0_0-21swapper/008:22:570
2800899340cyclictest0-21swapper/107:58:071
121650340irq/29-eth0_g0_7265-21timerandwakeup07:53:060
121650340irq/29-eth0_g0_7265-21timerandwakeup07:53:060
121650340irq/29-eth0_g0_29844-21fgrep07:13:030
121340ksoftirqd/115868-21sed08:28:081
2800899331cyclictest58672sleep107:48:041
121650330irq/29-eth0_g0_19423-21sendmail_mailqu08:43:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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