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2026-09-24 - 05:06

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
Click here to display the system's profile data or here to proceed to next system.
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 Thu Sep 24, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1000221700sleep1121650irq/29-eth0_g0_00:07:331
86872980chrt121750irq/30-eth0_g0_00:01:261
121720ksoftirqd/1121750irq/30-eth0_g0_00:30:251
121710ksoftirqd/1121650irq/29-eth0_g0_20:00:261
80682580sleep1121750irq/30-eth0_g0_21:46:211
266532550sleep1121750irq/30-eth0_g0_23:04:051
121550ksoftirqd/1121650irq/29-eth0_g0_22:31:561
81922520sleep0121650irq/29-eth0_g0_19:35:230
280412520sleep1121750irq/30-eth0_g0_23:10:071
125112520sleep1121650irq/29-eth0_g0_00:18:191
125112520sleep1121650irq/29-eth0_g0_00:18:191
121500ksoftirqd/1121750irq/30-eth0_g0_21:18:421
121480ksoftirqd/1121750irq/30-eth0_g0_23:49:281
121480ksoftirqd/1121750irq/30-eth0_g0_23:40:251
121470ksoftirqd/1121650irq/29-eth0_g0_22:17:021
121460ksoftirqd/1121750irq/30-eth0_g0_23:09:481
121650450irq/29-eth0_g0_31488-21ntp_offset21:10:250
121650450irq/29-eth0_g0_29286-21unixbench_multi21:00:280
121650450irq/29-eth0_g0_29286-21unixbench_multi21:00:280
121450ksoftirqd/1121750irq/30-eth0_g0_23:21:491
121450ksoftirqd/1121650irq/29-eth0_g0_19:41:331
121750440irq/30-eth0_g0_9709-21/usr/sbin/munin21:55:271
121750440irq/30-eth0_g0_1219-21kworker/1:221:11:181
121650440irq/29-eth0_g0_31ksoftirqd/022:20:170
121650440irq/29-eth0_g0_31ksoftirqd/019:00:230
121440ksoftirqd/1121650irq/29-eth0_g0_20:14:391
121750430irq/30-eth0_g0_1219-21kworker/1:222:02:061
121650430irq/29-eth0_g0_31ksoftirqd/023:30:050
121650430irq/29-eth0_g0_25234-21latency20:45:210
121430ksoftirqd/1121750irq/30-eth0_g0_23:41:030
121430ksoftirqd/1121750irq/30-eth0_g0_22:40:491
121430ksoftirqd/1121750irq/30-eth0_g0_20:17:380
121430ksoftirqd/1121750irq/30-eth0_g0_00:20:060
121430ksoftirqd/1121750irq/30-eth0_g0_00:20:060
121430ksoftirqd/1121750irq/30-eth0_g0_00:00:180
121430ksoftirqd/1121650irq/29-eth0_g0_00:07:140
121650420irq/29-eth0_g0_31ksoftirqd/000:25:290
121650420irq/29-eth0_g0_0-21swapper/022:10:200
32599411cyclictest27989-21seq20:55:251
121650410irq/29-eth0_g0_13-21kworker/0:123:34:430
121650410irq/29-eth0_g0_13-21kworker/0:122:42:280
121650410irq/29-eth0_g0_13-21kworker/0:121:59:080
121650410irq/29-eth0_g0_13-21kworker/0:121:16:530
121650410irq/29-eth0_g0_13-21kworker/0:121:06:280
121650410irq/29-eth0_g0_13-21kworker/0:100:22:360
121410ksoftirqd/1121750irq/30-eth0_g0_21:49:320
121410ksoftirqd/1121750irq/30-eth0_g0_21:28:380
32599401cyclictest13927-21mailstats22:10:271
121750400irq/30-eth0_g0_1219-21kworker/1:223:34:571
121750400irq/30-eth0_g0_121ksoftirqd/122:20:531
121650400irq/29-eth0_g0_31ksoftirqd/019:40:280
121650400irq/29-eth0_g0_23760-21timerandwakeup22:50:300
121650400irq/29-eth0_g0_2338-21unixbench_multi19:10:280
121650400irq/29-eth0_g0_13-21kworker/0:123:22:250
121650400irq/29-eth0_g0_13-21kworker/0:121:41:270
121650400irq/29-eth0_g0_13-21kworker/0:121:41:270
121650400irq/29-eth0_g0_121ksoftirqd/122:47:350
121650400irq/29-eth0_g0_121ksoftirqd/100:34:590
121400ksoftirqd/1121750irq/30-eth0_g0_22:30:490
121400ksoftirqd/1121750irq/30-eth0_g0_20:40:220
121400ksoftirqd/1121650irq/29-eth0_g0_21:21:111
32599392cyclictest12329-21forks22:05:231
32599391cyclictest21301-21cpu20:30:141
32599391cyclictest1063-21sed19:05:291
253292390sleep1121750irq/30-eth0_g0_22:57:591
121750390irq/30-eth0_g0_31ksoftirqd/023:45:530
121750390irq/30-eth0_g0_1219-21kworker/1:222:27:331
121750390irq/30-eth0_g0_0-21swapper/123:16:551
121650390irq/29-eth0_g0_31ksoftirqd/023:01:230
121650390irq/29-eth0_g0_31ksoftirqd/022:05:500
121650390irq/29-eth0_g0_13-21kworker/0:123:37:260
121650390irq/29-eth0_g0_13-21kworker/0:123:11:010
121650390irq/29-eth0_g0_13-21kworker/0:122:35:110
121650390irq/29-eth0_g0_13-21kworker/0:122:25:540
121390ksoftirqd/1121750irq/30-eth0_g0_23:55:450
121390ksoftirqd/1121750irq/30-eth0_g0_23:54:290
121390ksoftirqd/1121750irq/30-eth0_g0_23:07:050
121390ksoftirqd/1121750irq/30-eth0_g0_22:03:350
121390ksoftirqd/1121750irq/30-eth0_g0_21:38:120
121390ksoftirqd/1121750irq/30-eth0_g0_21:23:270
121390ksoftirqd/1121750irq/30-eth0_g0_20:21:210
121390ksoftirqd/1121750irq/30-eth0_g0_19:30:500
121390ksoftirqd/1121750irq/30-eth0_g0_19:25:490
121390ksoftirqd/1121750irq/30-eth0_g0_19:08:050
121390ksoftirqd/1121650irq/29-eth0_g0_21:42:161
121390ksoftirqd/1121650irq/29-eth0_g0_21:42:161
121390ksoftirqd/1121650irq/29-eth0_g0_21:37:121
121390ksoftirqd/1121650irq/29-eth0_g0_19:33:561
121390ksoftirqd/1121650irq/29-eth0_g0_19:20:361
32599381cyclictest6941-21cat23:55:201
32599381cyclictest6054-21grep23:50:261
32599381cyclictest29778-21diskmemload00:10:231
32599381cyclictest2059-21sort23:35:241
121750380irq/30-eth0_g0_1964-21runrttasks22:53:371
121750380irq/30-eth0_g0_121ksoftirqd/100:22:381
121650380irq/29-eth0_g0_1964-21runrttasks21:51:320
121650380irq/29-eth0_g0_1964-21runrttasks20:01:200
121650380irq/29-eth0_g0_13-21kworker/0:122:16:350
121650380irq/29-eth0_g0_13-21kworker/0:121:30:240
121380ksoftirqd/1121750irq/30-eth0_g0_23:20:040
121380ksoftirqd/1121750irq/30-eth0_g0_20:34:280
121380ksoftirqd/1121650irq/29-eth0_g0_21:50:211
121380ksoftirqd/1121650irq/29-eth0_g0_21:29:541
121380ksoftirqd/1121650irq/29-eth0_g0_20:43:271
121380ksoftirqd/1121650irq/29-eth0_g0_20:17:041
32599371cyclictest25667-21unixbench_singl20:45:281
121750370irq/30-eth0_g0_0-21swapper/100:25:541
121650370irq/29-eth0_g0_4412-21seq19:20:190
121650370irq/29-eth0_g0_31ksoftirqd/020:35:160
121650370irq/29-eth0_g0_13-21kworker/0:100:13:460
121650370irq/29-eth0_g0_121ksoftirqd/122:48:201
121650370irq/29-eth0_g0_0-21swapper/019:50:280
121370ksoftirqd/1121650irq/29-eth0_g0_20:25:281
325993631cyclictest5654-21/usr/sbin/munin19:25:231
32599361cyclictest31929-21awk23:25:171
32599361cyclictest2290-21cat19:10:271
32599361cyclictest12840-21sed19:55:181
32599361cyclictest116512sleep119:50:181
121750360irq/30-eth0_g0_1219-21kworker/1:221:34:341
121650360irq/29-eth0_g0_31ksoftirqd/022:59:580
121650360irq/29-eth0_g0_27740-21sort20:55:180
121650360irq/29-eth0_g0_26586-21ntpq20:50:230
121650360irq/29-eth0_g0_1964-21runrttasks20:10:170
121650360irq/29-eth0_g0_1964-21runrttasks20:05:500
121650360irq/29-eth0_g0_1964-21runrttasks20:05:500
121650360irq/29-eth0_g0_1964-21runrttasks19:46:470
32599352cyclictest30245-21nfs_client21:05:231
32599351cyclictest2967-21/usr/sbin/munin19:15:161
32599351cyclictest162242sleep120:09:201
32599351cyclictest162242sleep120:09:201
121750350irq/30-eth0_g0_31940-21/usr/sbin/munin19:00:191
121750350irq/30-eth0_g0_1219-21kworker/1:222:35:531
121650350irq/29-eth0_g0_3370-21proc_pri19:15:240
121350ksoftirqd/1121650irq/29-eth0_g0_19:45:211
325993422cyclictest26519-21ls20:50:211
32599342cyclictest296622sleep121:03:471
32599342cyclictest296622sleep121:03:471
32599341cyclictest18990-21runrttasks20:20:171
121650340irq/29-eth0_g0_20165-21sed20:25:190
121650340irq/29-eth0_g0_13171-21ps19:55:260
121340ksoftirqd/1121650irq/29-eth0_g0_20:35:251
121750310irq/30-eth0_g0_0-21swapper/119:35:261
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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