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2026-06-30 - 23:48

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 Tue Jun 30, 2026 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211020ksoftirqd/186352sleep010:40:400
121550ksoftirqd/1171622sleep011:15:040
121550ksoftirqd/1171622sleep011:15:040
234882540chrt121650irq/29-eth0_g0_11:42:201
121540ksoftirqd/1121750irq/30-eth0_g0_09:37:541
121520ksoftirqd/1121750irq/30-eth0_g0_11:35:351
121520ksoftirqd/1121650irq/29-eth0_g0_11:52:050
156262510sleep0121650irq/29-eth0_g0_11:08:490
121500ksoftirqd/1121750irq/30-eth0_g0_09:57:031
121500ksoftirqd/1121750irq/30-eth0_g0_09:46:061
121490ksoftirqd/1121750irq/30-eth0_g0_09:25:191
121470ksoftirqd/1121750irq/30-eth0_g0_12:01:211
121470ksoftirqd/1121750irq/30-eth0_g0_11:38:020
121650460irq/29-eth0_g0_31ksoftirqd/007:33:400
121460ksoftirqd/1121750irq/30-eth0_g0_11:33:101
121460ksoftirqd/1121650irq/29-eth0_g0_10:34:341
244552450sleep0121750irq/30-eth0_g0_11:44:180
239542450sleep1121650irq/29-eth0_g0_09:31:281
121450ksoftirqd/1121750irq/30-eth0_g0_10:50:061
121450ksoftirqd/1121750irq/30-eth0_g0_10:24:461
121450ksoftirqd/1121750irq/30-eth0_g0_09:10:521
121650440irq/29-eth0_g0_31ksoftirqd/009:13:220
121650440irq/29-eth0_g0_121ksoftirqd/110:07:410
121440ksoftirqd/12099499cyclictest10:06:391
121440ksoftirqd/1121750irq/30-eth0_g0_12:31:311
121440ksoftirqd/1121750irq/30-eth0_g0_11:13:391
121440ksoftirqd/1121750irq/30-eth0_g0_11:13:391
121750430irq/30-eth0_g0_1219-21kworker/1:212:05:521
121750430irq/30-eth0_g0_121ksoftirqd/110:08:451
121650430irq/29-eth0_g0_1964-21runrttasks09:40:210
121650430irq/29-eth0_g0_1964-21runrttasks09:40:210
121430ksoftirqd/1121650irq/29-eth0_g0_09:35:340
121430ksoftirqd/1121650irq/29-eth0_g0_08:09:471
262312420sleep1121750irq/30-eth0_g0_09:39:211
262312420sleep1121750irq/30-eth0_g0_09:39:211
121750420irq/30-eth0_g0_1219-21kworker/1:211:46:241
121650420irq/29-eth0_g0_121ksoftirqd/111:25:260
121420ksoftirqd/1121650irq/29-eth0_g0_12:24:041
121420ksoftirqd/1121650irq/29-eth0_g0_12:02:090
2099499411cyclictest0-21swapper/111:25:371
121750410irq/30-eth0_g0_1219-21kworker/1:212:23:111
121650410irq/29-eth0_g0_31ksoftirqd/011:29:410
121650410irq/29-eth0_g0_13-21kworker/0:109:51:200
121650410irq/29-eth0_g0_0-21swapper/007:43:450
121410ksoftirqd/1121650irq/29-eth0_g0_11:53:511
121410ksoftirqd/1121650irq/29-eth0_g0_09:14:541
40622400sleep0121650irq/29-eth0_g0_12:33:490
2099499401cyclictest8271-21zcat10:38:481
121750400irq/30-eth0_g0_1219-21kworker/1:211:20:171
121750400irq/30-eth0_g0_1219-21kworker/1:210:30:421
121750400irq/30-eth0_g0_121ksoftirqd/109:50:451
121650400irq/29-eth0_g0_20972sleep012:27:210
121650400irq/29-eth0_g0_13-21kworker/0:109:29:230
121650400irq/29-eth0_g0_121ksoftirqd/109:00:161
2099499391cyclictest24159-21unixbench_multi07:18:501
121750390irq/30-eth0_g0_20490-21grep07:03:500
121750390irq/30-eth0_g0_0-21swapper/110:55:481
121650390irq/29-eth0_g0_31ksoftirqd/012:13:060
121650390irq/29-eth0_g0_31ksoftirqd/011:54:520
121650390irq/29-eth0_g0_31ksoftirqd/010:53:480
121650390irq/29-eth0_g0_18423-21runrttasks11:20:260
121650390irq/29-eth0_g0_13-21kworker/0:110:27:300
121390ksoftirqd/1121750irq/30-eth0_g0_07:42:300
2099499381cyclictest4221-21grep12:33:511
2099499381cyclictest31014-21tail09:58:491
121750380irq/30-eth0_g0_30042-21/usr/sbin/munin12:08:411
121750380irq/30-eth0_g0_31ksoftirqd/011:07:080
121750380irq/30-eth0_g0_1219-21kworker/1:210:17:471
121750380irq/30-eth0_g0_1219-21kworker/1:209:19:171
121750380irq/30-eth0_g0_121ksoftirqd/110:23:071
121750380irq/30-eth0_g0_121ksoftirqd/110:23:071
121650380irq/29-eth0_g0_31ksoftirqd/010:43:510
121650380irq/29-eth0_g0_294872sleep012:05:460
121650380irq/29-eth0_g0_24209-21unixbench_singl07:18:510
121650380irq/29-eth0_g0_13836-21sed08:48:500
121650380irq/29-eth0_g0_13-21kworker/0:112:29:320
121650380irq/29-eth0_g0_13-21kworker/0:111:40:590
121650380irq/29-eth0_g0_13-21kworker/0:110:30:010
121650380irq/29-eth0_g0_13-21kworker/0:110:21:080
121650380irq/29-eth0_g0_13-21kworker/0:110:21:080
121650380irq/29-eth0_g0_13-21kworker/0:110:13:560
121650380irq/29-eth0_g0_13-21kworker/0:110:10:240
121650380irq/29-eth0_g0_13-21kworker/0:109:13:520
121650380irq/29-eth0_g0_0-21swapper/008:11:210
2099499372cyclictest14475-21wc11:03:501
2099499371cyclictest17995-21diskmemload11:08:441
121750370irq/30-eth0_g0_7122-21df_abs08:23:391
121750370irq/30-eth0_g0_19917-21sed07:03:401
121750370irq/30-eth0_g0_121ksoftirqd/111:51:521
121650370irq/29-eth0_g0_32656-21mailstats07:53:480
121650370irq/29-eth0_g0_31401-21nfs_client12:13:420
121650370irq/29-eth0_g0_31ksoftirqd/010:01:430
121650370irq/29-eth0_g0_29759-21tail09:53:530
121650370irq/29-eth0_g0_22380-21sed07:13:410
121650370irq/29-eth0_g0_1964-21runrttasks11:00:370
121650370irq/29-eth0_g0_1964-21runrttasks09:44:480
121650370irq/29-eth0_g0_1964-21runrttasks08:46:250
121650370irq/29-eth0_g0_1964-21runrttasks08:35:310
121650370irq/29-eth0_g0_17321-21proc_pri09:03:490
121650370irq/29-eth0_g0_13-21kworker/0:109:23:540
121650370irq/29-eth0_g0_13-21kworker/0:109:21:410
121650370irq/29-eth0_g0_10928-21vmstat10:48:500
2099499362cyclictest26236-21cat07:28:431
2099499362cyclictest2093-21snmpd08:47:231
20994993619cyclictest1964-21runrttasks12:13:461
2099499361cyclictest9257-21load10:43:441
2099499361cyclictest0-21swapper/108:20:391
121650360irq/29-eth0_g0_1964-21runrttasks08:38:540
121650360irq/29-eth0_g0_1964-21runrttasks08:28:390
121650360irq/29-eth0_g0_1964-21runrttasks08:14:370
121650360irq/29-eth0_g0_1964-21runrttasks08:01:120
121650360irq/29-eth0_g0_1964-21runrttasks08:01:120
121650360irq/29-eth0_g0_1964-21runrttasks07:26:390
121650360irq/29-eth0_g0_14479-21df08:53:410
121650360irq/29-eth0_g0_13-21kworker/0:110:34:040
121360ksoftirqd/1121650irq/29-eth0_g0_07:24:041
2099499351cyclictest880-21/usr/sbin/munin07:58:391
2099499351cyclictest880-21/usr/sbin/munin07:58:391
2099499351cyclictest51402sleep108:13:491
2099499351cyclictest146372sleep108:53:431
2099499351cyclictest13334-21grep10:58:511
2099499351cyclictest0-21swapper/107:47:271
121750350irq/30-eth0_g0_32575-21proc_pri07:53:471
121650350irq/29-eth0_g0_31ksoftirqd/012:20:220
121650350irq/29-eth0_g0_1964-21runrttasks08:21:160
121650350irq/29-eth0_g0_1964-21runrttasks07:31:250
121650350irq/29-eth0_g0_1964-21runrttasks07:10:270
2099499341cyclictest27828-21taskset07:33:491
2099499341cyclictest13646-21ps08:48:481
2099499341cyclictest10042-21sendmail_mailqu08:33:491
121750340irq/30-eth0_g0_0-21swapper/108:38:421
121650340irq/29-eth0_g0_31585-21grep07:48:510
121650340irq/29-eth0_g0_2526-21ntpdc08:03:450
121650340irq/29-eth0_g0_22136-21runrttasks07:12:321
121650340irq/29-eth0_g0_1964-21runrttasks08:59:230
121340ksoftirqd/1121650irq/29-eth0_g0_09:03:521
121340ksoftirqd/1121650irq/29-eth0_g0_07:48:451
2099499331cyclictest28735-21missed_timers07:38:441
121650330irq/29-eth0_g0_9283-21runrttasks08:31:591
2099499321cyclictest22980-21grep07:13:501
121650320irq/29-eth0_g0_7318-21latency08:23:420
2099499301cyclictest0-21swapper/108:03:361
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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