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2026-07-09 - 20:26

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 792 highest latencies:
System rack3slot5s.osadl.org (updated Thu Jul 09, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121780ksoftirqd/1121750irq/30-eth0_g0_10:43:071
46082630sleep1121750irq/30-eth0_g0_11:07:391
142782580sleep0121750irq/30-eth0_g0_11:46:110
3272550sleep0121750irq/30-eth0_g0_10:48:270
197772540sleep0121650irq/29-eth0_g0_09:56:260
121540ksoftirqd/1121750irq/30-eth0_g0_07:33:081
284482520sleep0121750irq/30-eth0_g0_10:32:330
183342510sleep0121750irq/30-eth0_g0_09:48:520
183342510sleep0121750irq/30-eth0_g0_09:48:520
157912500sleep0121650irq/29-eth0_g0_09:38:280
121750500irq/30-eth0_g0_1964-21runrttasks11:34:140
121500ksoftirqd/1121750irq/30-eth0_g0_07:43:261
121490ksoftirqd/1121750irq/30-eth0_g0_09:45:391
121650480irq/29-eth0_g0_31ksoftirqd/011:56:370
121650470irq/29-eth0_g0_6538-21timerandwakeup11:13:280
121470ksoftirqd/1121750irq/30-eth0_g0_07:58:071
121750460irq/30-eth0_g0_29623-21runrttasks10:37:001
121750460irq/30-eth0_g0_29623-21runrttasks10:37:001
121650450irq/29-eth0_g0_1964-21runrttasks07:05:020
121650450irq/29-eth0_g0_13-21kworker/0:112:25:190
121450ksoftirqd/1121750irq/30-eth0_g0_11:50:411
121450ksoftirqd/1121650irq/29-eth0_g0_09:01:461
121750440irq/30-eth0_g0_1219-21kworker/1:210:44:381
121440ksoftirqd/1121650irq/29-eth0_g0_11:12:481
235332430chrt121750irq/30-eth0_g0_10:12:230
121750430irq/30-eth0_g0_1219-21kworker/1:209:23:181
121750430irq/30-eth0_g0_10211-21timerandwakeup07:03:281
121430ksoftirqd/1121750irq/30-eth0_g0_09:13:001
121650420irq/29-eth0_g0_31ksoftirqd/010:53:210
121650420irq/29-eth0_g0_31ksoftirqd/010:53:210
121650420irq/29-eth0_g0_31ksoftirqd/009:28:280
121650420irq/29-eth0_g0_31ksoftirqd/009:26:290
121650420irq/29-eth0_g0_121ksoftirqd/111:58:500
121420ksoftirqd/1121650irq/29-eth0_g0_11:21:531
121420ksoftirqd/1121650irq/29-eth0_g0_10:05:051
121420ksoftirqd/1121650irq/29-eth0_g0_08:55:301
121750410irq/30-eth0_g0_1219-21kworker/1:212:09:011
121750410irq/30-eth0_g0_1219-21kworker/1:212:09:011
121650410irq/29-eth0_g0_20208-21if_eth009:58:200
121650410irq/29-eth0_g0_13-21kworker/0:111:01:280
121650410irq/29-eth0_g0_13-21kworker/0:110:47:520
1077099411cyclictest7668-21diskmemload09:53:241
172452400sleep0121650irq/29-eth0_g0_09:45:280
121750400irq/30-eth0_g0_121ksoftirqd/109:59:101
121750400irq/30-eth0_g0_121ksoftirqd/109:38:301
121750400irq/30-eth0_g0_0-21swapper/109:19:471
121650400irq/29-eth0_g0_26899-21chrt10:23:430
121650400irq/29-eth0_g0_13-21kworker/0:111:23:500
121650400irq/29-eth0_g0_13-21kworker/0:111:18:470
121650400irq/29-eth0_g0_13-21kworker/0:111:10:440
121650400irq/29-eth0_g0_13-21kworker/0:110:38:280
121650400irq/29-eth0_g0_13-21kworker/0:110:22:180
121650400irq/29-eth0_g0_13-21kworker/0:110:16:290
121650400irq/29-eth0_g0_13-21kworker/0:109:13:090
121650400irq/29-eth0_g0_121ksoftirqd/112:32:500
121650400irq/29-eth0_g0_121ksoftirqd/112:18:061
121650400irq/29-eth0_g0_121ksoftirqd/112:18:061
121650400irq/29-eth0_g0_10350-21/usr/sbin/munin11:28:290
121400ksoftirqd/1121650irq/29-eth0_g0_10:15:251
121750390irq/30-eth0_g0_121ksoftirqd/111:02:501
121750390irq/30-eth0_g0_121ksoftirqd/109:35:041
121650390irq/29-eth0_g0_29125-21sendmail_mailqu10:33:280
121650390irq/29-eth0_g0_29125-21sendmail_mailqu10:33:280
121650390irq/29-eth0_g0_13-21kworker/0:112:33:270
121650390irq/29-eth0_g0_13-21kworker/0:111:07:480
121650390irq/29-eth0_g0_13-21kworker/0:110:05:180
121650390irq/29-eth0_g0_13-21kworker/0:109:18:210
121390ksoftirqd/1121750irq/30-eth0_g0_12:14:420
121390ksoftirqd/1121750irq/30-eth0_g0_12:14:420
121390ksoftirqd/1121750irq/30-eth0_g0_11:50:000
121390ksoftirqd/1121750irq/30-eth0_g0_11:41:040
121390ksoftirqd/1121750irq/30-eth0_g0_09:09:010
121390ksoftirqd/1121750irq/30-eth0_g0_08:48:470
121390ksoftirqd/1121750irq/30-eth0_g0_08:35:090
121390ksoftirqd/1121750irq/30-eth0_g0_08:27:070
121390ksoftirqd/1121650irq/29-eth0_g0_11:13:161
121390ksoftirqd/1121650irq/29-eth0_g0_10:28:221
121390ksoftirqd/1121650irq/29-eth0_g0_09:17:311
121750380irq/30-eth0_g0_1219-21kworker/1:212:23:251
121750380irq/30-eth0_g0_1219-21kworker/1:212:18:341
121750380irq/30-eth0_g0_1219-21kworker/1:210:11:551
121750380irq/30-eth0_g0_121ksoftirqd/110:53:341
121750380irq/30-eth0_g0_121ksoftirqd/110:53:341
121750380irq/30-eth0_g0_121ksoftirqd/109:49:391
121750380irq/30-eth0_g0_121ksoftirqd/109:49:391
121750380irq/30-eth0_g0_0-21swapper/109:28:251
121650380irq/29-eth0_g0_22971-21seq07:58:070
121650380irq/29-eth0_g0_13-21kworker/0:112:08:370
121650380irq/29-eth0_g0_13-21kworker/0:112:08:370
121650380irq/29-eth0_g0_13-21kworker/0:112:06:290
121650380irq/29-eth0_g0_13-21kworker/0:109:33:180
121650380irq/29-eth0_g0_13-21kworker/0:108:13:240
121650380irq/29-eth0_g0_12005-21ls07:13:070
121380ksoftirqd/1121750irq/30-eth0_g0_08:10:330
121380ksoftirqd/1121750irq/30-eth0_g0_07:28:590
121380ksoftirqd/1121650irq/29-eth0_g0_12:32:271
121380ksoftirqd/1121650irq/29-eth0_g0_11:56:201
121380ksoftirqd/1121650irq/29-eth0_g0_11:24:331
121380ksoftirqd/1121650irq/29-eth0_g0_09:04:211
121380ksoftirqd/1121650irq/29-eth0_g0_08:43:121
121380ksoftirqd/1121650irq/29-eth0_g0_08:09:111
121380ksoftirqd/1121650irq/29-eth0_g0_07:36:281
121380ksoftirqd/1121650irq/29-eth0_g0_07:20:271
1077099382cyclictest18521-21/usr/sbin/munin07:38:221
1077099382cyclictest18521-21/usr/sbin/munin07:38:221
1077099381cyclictest24285-21cpu08:03:171
1077099381cyclictest10040-21/usr/sbin/munin11:28:241
125262370sleep112527-21proc_pri07:13:261
121750370irq/30-eth0_g0_121ksoftirqd/111:47:041
121750370irq/30-eth0_g0_0-21swapper/112:06:121
121750370irq/30-eth0_g0_0-21swapper/110:19:311
121650370irq/29-eth0_g0_1046-21grep08:38:280
121370ksoftirqd/1121750irq/30-eth0_g0_07:42:070
121370ksoftirqd/1121750irq/30-eth0_g0_07:42:070
1077099372cyclictest32323-21seq10:48:191
1077099372cyclictest31537-21munin-run08:33:071
1077099372cyclictest26611-21ps10:23:271
1077099371cyclictest15109-21timerandwakeup07:23:271
1077099371cyclictest11451-21sort11:33:271
121750360irq/30-eth0_g0_1219-21kworker/1:212:35:201
121650360irq/29-eth0_g0_24413-21taskset08:03:180
121650360irq/29-eth0_g0_21159-21fgrep07:48:280
121650360irq/29-eth0_g0_1964-21runrttasks08:28:540
121650360irq/29-eth0_g0_13853-21sendmail_mailst07:18:290
121650360irq/29-eth0_g0_121ksoftirqd/111:58:361
121650360irq/29-eth0_g0_0-21swapper/012:18:220
121360ksoftirqd/1121750irq/30-eth0_g0_07:24:300
1077099361cyclictest20685-21df07:48:191
1077099361cyclictest12295-21ethtool11:38:201
121750350irq/30-eth0_g0_0-21swapper/108:18:181
121650350irq/29-eth0_g0_1964-21runrttasks08:53:500
121650350irq/29-eth0_g0_1964-21runrttasks08:44:490
121650350irq/29-eth0_g0_1964-21runrttasks08:00:500
121350ksoftirqd/1121750irq/30-eth0_g0_08:20:100
121350ksoftirqd/1121750irq/30-eth0_g0_07:15:540
1077099351cyclictest30380-21chrt08:28:081
1077099351cyclictest1069-21unixbench_singl08:38:281
121750340irq/30-eth0_g0_32005-21ntp_kernel_err08:33:231
121650340irq/29-eth0_g0_0-21swapper/007:33:260
121340ksoftirqd/123962-21taskset08:00:301
1077099341cyclictest0-21swapper/108:48:301
121650330irq/29-eth0_g0_6609-21df_abs09:03:180
121650330irq/29-eth0_g0_19460-21df07:43:180
121650330irq/29-eth0_g0_0-21swapper/008:58:290
1077099331cyclictest0-21swapper/107:08:591
121320ksoftirqd/126904-21chrt08:13:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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