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2026-06-27 - 21:29

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 Sat Jun 27, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
563321260sleep0121650irq/29-eth0_g0_10:18:470
1861221200sleep0121650irq/29-eth0_g0_11:10:530
333421180sleep0121650irq/29-eth0_g0_12:20:380
1211050ksoftirqd/1121750irq/30-eth0_g0_09:36:041
49321010sleep0121650irq/29-eth0_g0_07:43:560
121950ksoftirqd/1121750irq/30-eth0_g0_08:03:361
121870ksoftirqd/1121650irq/29-eth0_g0_10:13:480
121830ksoftirqd/1121750irq/30-eth0_g0_09:50:031
321432800sleep1121650irq/29-eth0_g0_09:53:521
61352760sleep1121650irq/29-eth0_g0_12:33:471
121750ksoftirqd/1121750irq/30-eth0_g0_10:25:271
221972720sleep1121750irq/30-eth0_g0_09:13:501
200242620chrt121650irq/29-eth0_g0_11:18:060
125252580sleep1121750irq/30-eth0_g0_08:33:541
125252580sleep1121750irq/30-eth0_g0_08:33:541
121570ksoftirqd/1121750irq/30-eth0_g0_12:18:441
121540ksoftirqd/1121750irq/30-eth0_g0_09:27:391
121500ksoftirqd/1121750irq/30-eth0_g0_10:20:161
121490ksoftirqd/1121750irq/30-eth0_g0_11:35:391
92122480sleep1121750irq/30-eth0_g0_08:18:591
121470ksoftirqd/1121650irq/29-eth0_g0_08:59:021
121750460irq/30-eth0_g0_121ksoftirqd/111:48:461
121460ksoftirqd/1121750irq/30-eth0_g0_12:16:431
121460ksoftirqd/1121750irq/30-eth0_g0_10:35:101
66852450sleep0121650irq/29-eth0_g0_10:23:400
121750450irq/30-eth0_g0_121ksoftirqd/108:38:561
121750450irq/30-eth0_g0_121ksoftirqd/108:38:561
121450ksoftirqd/1121650irq/29-eth0_g0_08:17:581
121750440irq/30-eth0_g0_29938-21unixbench_multi09:43:581
121440ksoftirqd/1121750irq/30-eth0_g0_12:29:511
121440ksoftirqd/1121750irq/30-eth0_g0_09:41:411
121440ksoftirqd/1121650irq/29-eth0_g0_12:27:101
121440ksoftirqd/1121650irq/29-eth0_g0_09:22:151
121750430irq/30-eth0_g0_1219-21kworker/1:211:03:081
121750430irq/30-eth0_g0_1219-21kworker/1:210:41:531
121430ksoftirqd/1121750irq/30-eth0_g0_11:54:570
121430ksoftirqd/1121650irq/29-eth0_g0_09:59:091
121430ksoftirqd/1121650irq/29-eth0_g0_09:26:040
316252420sleep0121750irq/30-eth0_g0_09:53:050
121750420irq/30-eth0_g0_1219-21kworker/1:210:06:311
121650420irq/29-eth0_g0_31ksoftirqd/008:33:580
121650420irq/29-eth0_g0_31ksoftirqd/008:33:580
121650420irq/29-eth0_g0_22639-21runrttasks07:03:470
121650420irq/29-eth0_g0_17124-21unixbench_multi11:03:590
121650420irq/29-eth0_g0_13-21kworker/0:109:59:120
121420ksoftirqd/1121750irq/30-eth0_g0_11:31:191
121420ksoftirqd/1121650irq/29-eth0_g0_11:23:551
121420ksoftirqd/1121650irq/29-eth0_g0_11:23:551
241062410sleep0121650irq/29-eth0_g0_09:21:060
121750410irq/30-eth0_g0_121ksoftirqd/110:51:381
121750410irq/30-eth0_g0_121ksoftirqd/109:54:050
121650410irq/29-eth0_g0_31ksoftirqd/011:33:280
121650410irq/29-eth0_g0_17586-21sendmail_mailqu08:53:550
121650410irq/29-eth0_g0_13-21kworker/0:111:33:540
121650410irq/29-eth0_g0_121ksoftirqd/110:52:140
121410ksoftirqd/1121750irq/30-eth0_g0_10:42:050
121410ksoftirqd/1121650irq/29-eth0_g0_12:08:530
121410ksoftirqd/1121650irq/29-eth0_g0_11:19:001
121410ksoftirqd/1121650irq/29-eth0_g0_10:43:581
121410ksoftirqd/1121650irq/29-eth0_g0_10:43:581
121750400irq/30-eth0_g0_1219-21kworker/1:210:55:261
121750400irq/30-eth0_g0_121ksoftirqd/110:08:501
121650400irq/29-eth0_g0_5204-21memory12:28:540
121650400irq/29-eth0_g0_13-21kworker/0:112:14:310
121650400irq/29-eth0_g0_13-21kworker/0:112:04:270
121650400irq/29-eth0_g0_13-21kworker/0:112:00:490
121650400irq/29-eth0_g0_13-21kworker/0:111:27:230
121650400irq/29-eth0_g0_13-21kworker/0:111:27:230
121650400irq/29-eth0_g0_13-21kworker/0:111:02:530
121650400irq/29-eth0_g0_13-21kworker/0:110:58:140
121650400irq/29-eth0_g0_13-21kworker/0:110:45:160
121650400irq/29-eth0_g0_13-21kworker/0:110:45:160
121650400irq/29-eth0_g0_13-21kworker/0:109:36:130
121650400irq/29-eth0_g0_13-21kworker/0:109:32:120
121400ksoftirqd/1121750irq/30-eth0_g0_11:50:470
121400ksoftirqd/1121650irq/29-eth0_g0_11:44:261
121400ksoftirqd/1121650irq/29-eth0_g0_07:38:381
2363299392cyclictest15135-21grep08:43:561
121750390irq/30-eth0_g0_121ksoftirqd/111:54:531
121650390irq/29-eth0_g0_1964-21runrttasks10:34:460
121650390irq/29-eth0_g0_13-21kworker/0:112:24:090
121650390irq/29-eth0_g0_13-21kworker/0:111:43:350
121650390irq/29-eth0_g0_13-21kworker/0:109:40:510
121650390irq/29-eth0_g0_13-21kworker/0:109:11:220
121650390irq/29-eth0_g0_121ksoftirqd/110:04:470
121390ksoftirqd/1121750irq/30-eth0_g0_12:36:440
121390ksoftirqd/1121750irq/30-eth0_g0_11:44:220
121390ksoftirqd/1121750irq/30-eth0_g0_11:20:510
121390ksoftirqd/1121750irq/30-eth0_g0_09:47:200
121390ksoftirqd/1121750irq/30-eth0_g0_09:14:550
2363299381cyclictest20639-21diskmemload12:07:161
2363299381cyclictest20639-21diskmemload11:05:101
121750380irq/30-eth0_g0_121ksoftirqd/111:18:101
121750380irq/30-eth0_g0_121ksoftirqd/110:33:341
121750380irq/30-eth0_g0_121ksoftirqd/109:28:571
121650380irq/29-eth0_g0_13-21kworker/0:110:31:420
121380ksoftirqd/1121750irq/30-eth0_g0_07:03:551
121380ksoftirqd/1121650irq/29-eth0_g0_10:15:171
121380ksoftirqd/1121650irq/29-eth0_g0_08:26:091
121380ksoftirqd/1121650irq/29-eth0_g0_07:21:291
2363299371cyclictest3541-21sort07:58:361
2363299371cyclictest25762-21head11:38:591
2363299371cyclictest18102-21awk11:08:541
121750370irq/30-eth0_g0_121ksoftirqd/112:02:381
121650370irq/29-eth0_g0_28566-21date07:28:360
121650370irq/29-eth0_g0_1964-21runrttasks08:27:430
2363299361cyclictest305-21grep07:43:541
2363299361cyclictest1739-21grep07:48:571
2363299361cyclictest16217-21chrt08:48:541
121750360irq/30-eth0_g0_1219-21kworker/1:209:12:371
121650360irq/29-eth0_g0_7250-21/usr/sbin/munin08:13:540
121650360irq/29-eth0_g0_3571-21/usr/sbin/munin07:58:560
121650360irq/29-eth0_g0_3476-21proc_pri10:08:540
121650360irq/29-eth0_g0_31390-21sort07:38:520
121650360irq/29-eth0_g0_29278-21chrt07:28:570
121650360irq/29-eth0_g0_1964-21runrttasks08:43:050
121650360irq/29-eth0_g0_1964-21runrttasks08:43:050
121650360irq/29-eth0_g0_1964-21runrttasks07:13:390
121650360irq/29-eth0_g0_1964-21runrttasks07:09:340
121650360irq/29-eth0_g0_18941-21unixbench_multi08:58:570
121650360irq/29-eth0_g0_0-21swapper/008:48:580
121360ksoftirqd/1121750irq/30-eth0_g0_08:45:040
121360ksoftirqd/1121650irq/29-eth0_g0_07:28:571
2363299351cyclictest27566-21chrt07:23:491
2363299351cyclictest25084-21df_abs07:13:481
121750350irq/30-eth0_g0_0-21swapper/112:11:351
121650350irq/29-eth0_g0_1964-21runrttasks09:04:080
121650350irq/29-eth0_g0_1964-21runrttasks08:22:560
121650350irq/29-eth0_g0_1964-21runrttasks07:53:110
121650350irq/29-eth0_g0_11634-21unixbench_singl08:29:010
121650350irq/29-eth0_g0_11634-21unixbench_singl08:29:010
121650350irq/29-eth0_g0_0-21swapper/008:03:510
2363299341cyclictest6628-21sort08:08:571
2363299341cyclictest31054-21sort07:38:361
2363299341cyclictest24166-21taskset07:08:581
121750340irq/30-eth0_g0_5476-21unixbench_singl08:03:571
121650340irq/29-eth0_g0_30246-21ntpdc07:33:540
121650340irq/29-eth0_g0_26582-21ntp_states07:18:540
121650340irq/29-eth0_g0_0-21swapper/008:08:530
2363299331cyclictest11323-21grep08:28:561
2363299331cyclictest11323-21grep08:28:561
2363299331cyclictest0-21swapper/108:54:441
121650330irq/29-eth0_g0_0-21swapper/007:53:540
2363299321cyclictest0-21swapper/109:03:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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