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2026-08-02 - 20:22

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 Sun Aug 02, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1539821430sleep0121650irq/29-eth0_g0_09:13:200
2158021390sleep0121650irq/29-eth0_g0_09:39:000
121800ksoftirqd/1121750irq/30-eth0_g0_11:17:531
121800ksoftirqd/1121750irq/30-eth0_g0_11:17:531
121670ksoftirqd/1121750irq/30-eth0_g0_07:22:281
142342540sleep0121750irq/30-eth0_g0_09:09:010
121530ksoftirqd/1121750irq/30-eth0_g0_11:25:431
121530ksoftirqd/1121750irq/30-eth0_g0_10:20:151
121520ksoftirqd/1121750irq/30-eth0_g0_12:02:291
121510ksoftirqd/1121650irq/29-eth0_g0_09:47:090
121510ksoftirqd/1121650irq/29-eth0_g0_09:47:090
88122500chrt121650irq/29-eth0_g0_10:59:471
121500ksoftirqd/1121750irq/30-eth0_g0_10:02:001
298262490sleep0121650irq/29-eth0_g0_10:12:290
121480ksoftirqd/1121750irq/30-eth0_g0_10:51:551
121480ksoftirqd/1121750irq/30-eth0_g0_09:41:121
121480ksoftirqd/1121750irq/30-eth0_g0_09:26:070
121650470irq/29-eth0_g0_31ksoftirqd/012:32:220
121470ksoftirqd/1121750irq/30-eth0_g0_11:46:371
50162460sleep1121650irq/29-eth0_g0_10:43:191
121650460irq/29-eth0_g0_31ksoftirqd/011:24:390
121650460irq/29-eth0_g0_121ksoftirqd/112:18:150
121460ksoftirqd/1121750irq/30-eth0_g0_09:08:051
174182450sleep1121650irq/29-eth0_g0_11:35:101
168082450sleep1121750irq/30-eth0_g0_09:20:291
105662450sleep1121750irq/30-eth0_g0_11:07:241
121650440irq/29-eth0_g0_31ksoftirqd/009:17:320
121440ksoftirqd/1121750irq/30-eth0_g0_07:02:280
317262430sleep0121750irq/30-eth0_g0_08:07:300
121650430irq/29-eth0_g0_31ksoftirqd/009:55:410
121650430irq/29-eth0_g0_31ksoftirqd/009:28:430
121430ksoftirqd/1121650irq/29-eth0_g0_12:29:031
121750420irq/30-eth0_g0_1219-21kworker/1:212:26:491
121750420irq/30-eth0_g0_1219-21kworker/1:209:42:201
121750420irq/30-eth0_g0_1219-21kworker/1:209:42:201
121420ksoftirqd/1121750irq/30-eth0_g0_09:52:491
121750410irq/30-eth0_g0_1219-21kworker/1:212:16:011
121650410irq/29-eth0_g0_31ksoftirqd/010:33:430
121650410irq/29-eth0_g0_13-21kworker/0:111:14:560
121650410irq/29-eth0_g0_121ksoftirqd/108:34:121
121410ksoftirqd/1121750irq/30-eth0_g0_12:01:181
121410ksoftirqd/1121750irq/30-eth0_g0_11:38:070
121410ksoftirqd/1121650irq/29-eth0_g0_11:56:300
121750400irq/30-eth0_g0_1219-21kworker/1:210:29:551
121750400irq/30-eth0_g0_121ksoftirqd/111:02:351
121750400irq/30-eth0_g0_0-21swapper/111:56:421
121650400irq/29-eth0_g0_1964-21runrttasks11:59:510
121650400irq/29-eth0_g0_16857-21ntpq07:07:290
121650400irq/29-eth0_g0_13-21kworker/0:111:51:250
121650400irq/29-eth0_g0_13-21kworker/0:111:07:230
121650400irq/29-eth0_g0_13-21kworker/0:110:22:230
121650400irq/29-eth0_g0_13-21kworker/0:109:57:360
121650400irq/29-eth0_g0_13-21kworker/0:109:35:410
121650400irq/29-eth0_g0_121ksoftirqd/111:31:040
121650400irq/29-eth0_g0_121ksoftirqd/110:18:230
121400ksoftirqd/1121750irq/30-eth0_g0_11:46:040
1636099391cyclictest26910-21df_abs10:02:201
1636099391cyclictest2404-21grep10:32:321
1636099391cyclictest18385-21head11:37:341
1636099391cyclictest13277-21diskmemload09:28:291
121750390irq/30-eth0_g0_1219-21kworker/1:212:33:501
121750390irq/30-eth0_g0_1219-21kworker/1:211:14:251
121750390irq/30-eth0_g0_1219-21kworker/1:210:12:221
121750390irq/30-eth0_g0_1219-21kworker/1:209:12:221
121750390irq/30-eth0_g0_121ksoftirqd/110:52:591
121750390irq/30-eth0_g0_121ksoftirqd/110:38:551
121650390irq/29-eth0_g0_13-21kworker/0:112:13:320
121650390irq/29-eth0_g0_13-21kworker/0:111:33:160
121650390irq/29-eth0_g0_13-21kworker/0:110:49:410
121650390irq/29-eth0_g0_121ksoftirqd/110:59:200
121650390irq/29-eth0_g0_0-21swapper/011:02:280
121390ksoftirqd/1121750irq/30-eth0_g0_12:05:260
121390ksoftirqd/1121750irq/30-eth0_g0_11:21:050
121390ksoftirqd/1121750irq/30-eth0_g0_11:21:050
121390ksoftirqd/1121750irq/30-eth0_g0_10:45:440
121390ksoftirqd/1121750irq/30-eth0_g0_10:29:120
121390ksoftirqd/1121750irq/30-eth0_g0_08:15:410
1636099381cyclictest19563-21unixbench_singl07:17:331
121750380irq/30-eth0_g0_1219-21kworker/1:209:36:151
121750380irq/30-eth0_g0_1219-21kworker/1:209:22:301
121650380irq/29-eth0_g0_31ksoftirqd/010:40:240
121650380irq/29-eth0_g0_31ksoftirqd/009:48:090
121650380irq/29-eth0_g0_1964-21runrttasks12:23:570
121650380irq/29-eth0_g0_13-21kworker/0:110:08:290
1636099372cyclictest21573-21irqstats07:27:231
1636099372cyclictest21573-21irqstats07:27:231
1636099372cyclictest16783-21taskset07:07:261
1636099371cyclictest25642-21grep07:42:311
1636099371cyclictest11451-21grep08:57:291
121750370irq/30-eth0_g0_1219-21kworker/1:212:20:541
121750370irq/30-eth0_g0_1219-21kworker/1:210:24:291
121750370irq/30-eth0_g0_1219-21kworker/1:209:51:421
121750370irq/30-eth0_g0_121ksoftirqd/111:27:111
121650370irq/29-eth0_g0_6698-21unixbench_singl08:37:310
121650370irq/29-eth0_g0_3576-21/usr/sbin/munin08:27:280
121650370irq/29-eth0_g0_20487-21awk07:22:260
121650370irq/29-eth0_g0_13-21kworker/0:112:30:200
121650370irq/29-eth0_g0_13-21kworker/0:112:08:050
121650370irq/29-eth0_g0_13-21kworker/0:110:03:110
121650370irq/29-eth0_g0_121ksoftirqd/112:07:581
121650370irq/29-eth0_g0_0-21swapper/007:37:290
1636099362cyclictest23020-21proc_pri07:32:291
1636099362cyclictest23020-21proc_pri07:32:291
1636099361cyclictest31732-21grep08:07:301
1636099361cyclictest28905-21taskset07:57:261
1636099361cyclictest27960-21awk07:52:331
121750360irq/30-eth0_g0_15522-21ls07:02:271
121750360irq/30-eth0_g0_1219-21kworker/1:211:51:161
121650360irq/29-eth0_g0_9108-21tail08:47:300
121650360irq/29-eth0_g0_1964-21runrttasks08:34:470
121650360irq/29-eth0_g0_1964-21runrttasks08:26:330
121650360irq/29-eth0_g0_1964-21runrttasks07:12:380
121650360irq/29-eth0_g0_13-21kworker/0:110:53:010
121650360irq/29-eth0_g0_12276-21chrt09:02:220
1636099351cyclictest64002sleep108:37:261
1636099351cyclictest30567-21unixbench_singl08:02:361
1636099351cyclictest17802-21sed07:12:221
1636099351cyclictest0-21swapper/110:07:211
121750350irq/30-eth0_g0_9119-21sed08:47:301
121750350irq/30-eth0_g0_12898-21sshd09:02:431
121750350irq/30-eth0_g0_0-21swapper/108:12:261
121650350irq/29-eth0_g0_31013-21latency_hist08:07:090
121650350irq/29-eth0_g0_29228-21chrt07:57:340
121650350irq/29-eth0_g0_25356-21nfs_client07:42:260
121650350irq/29-eth0_g0_23022-21/usr/sbin/munin07:32:290
121650350irq/29-eth0_g0_23022-21/usr/sbin/munin07:32:290
121650350irq/29-eth0_g0_1964-21runrttasks08:53:060
121650350irq/29-eth0_g0_1964-21runrttasks08:45:170
121650350irq/29-eth0_g0_19152-21cat07:17:260
121650350irq/29-eth0_g0_1378-21ls08:17:260
121650350irq/29-eth0_g0_0-21swapper/007:52:350
1636099341cyclictest1226-21df_abs08:17:231
121750340irq/30-eth0_g0_1636099cyclictest08:22:221
121650340irq/29-eth0_g0_1964-21runrttasks08:59:330
121650340irq/29-eth0_g0_1964-21runrttasks07:31:450
121650340irq/29-eth0_g0_1964-21runrttasks07:31:450
1636099331cyclictest121750irq/30-eth0_g0_07:47:331
1636099331cyclictest0-21swapper/108:42:271
121750330irq/30-eth0_g0_3714-21df_abs08:27:221
121650330irq/29-eth0_g0_26425-21if_eth007:47:240
1636099321cyclictest0-21swapper/108:52:281
1636099321cyclictest0-21swapper/107:37:401
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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