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2026-08-26 - 02:45

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 Wed Aug 26, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121980ksoftirqd/1121750irq/30-eth0_g0_23:03:011
121970ksoftirqd/1121750irq/30-eth0_g0_20:50:461
121680ksoftirqd/1121750irq/30-eth0_g0_21:35:330
85162660sleep1121750irq/30-eth0_g0_23:52:261
121630ksoftirqd/1121650irq/29-eth0_g0_23:46:290
103342580sleep1121750irq/30-eth0_g0_00:01:271
325182560sleep1121750irq/30-eth0_g0_21:06:291
325182560sleep1121750irq/30-eth0_g0_21:06:291
252822520sleep0121750irq/30-eth0_g0_22:50:380
7422510chrt121750irq/30-eth0_g0_23:21:311
121500ksoftirqd/1121750irq/30-eth0_g0_00:12:470
143752490sleep0121650irq/29-eth0_g0_00:16:340
121490ksoftirqd/1121750irq/30-eth0_g0_20:32:301
121480ksoftirqd/1121750irq/30-eth0_g0_21:52:531
121480ksoftirqd/1121650irq/29-eth0_g0_21:22:231
121480ksoftirqd/1121650irq/29-eth0_g0_00:36:130
121470ksoftirqd/1121650irq/29-eth0_g0_21:11:161
117450470irq/72-mmc0121ksoftirqd/123:16:241
121460ksoftirqd/1121750irq/30-eth0_g0_23:41:101
121460ksoftirqd/1121750irq/30-eth0_g0_22:49:551
121460ksoftirqd/1121750irq/30-eth0_g0_21:45:191
121650450irq/29-eth0_g0_22884-21sendmail_mailqu20:26:330
121450ksoftirqd/1121650irq/29-eth0_g0_21:04:341
121440ksoftirqd/1121750irq/30-eth0_g0_23:56:151
121440ksoftirqd/1121750irq/30-eth0_g0_22:16:301
121440ksoftirqd/1121750irq/30-eth0_g0_22:16:301
121750430irq/30-eth0_g0_25912sleep123:29:441
121750430irq/30-eth0_g0_1219-21kworker/1:221:31:361
121750430irq/30-eth0_g0_1219-21kworker/1:200:28:481
121650430irq/29-eth0_g0_31ksoftirqd/023:06:270
121650430irq/29-eth0_g0_121ksoftirqd/121:53:210
121750420irq/30-eth0_g0_1219-21kworker/1:222:54:391
121750420irq/30-eth0_g0_1219-21kworker/1:222:39:371
121750420irq/30-eth0_g0_1219-21kworker/1:200:06:281
121650420irq/29-eth0_g0_3943-21sendmail_mailqu21:21:340
121650420irq/29-eth0_g0_31ksoftirqd/022:31:330
121420ksoftirqd/1121650irq/29-eth0_g0_23:41:341
121420ksoftirqd/1121650irq/29-eth0_g0_21:40:081
121420ksoftirqd/1121650irq/29-eth0_g0_00:18:261
121650410irq/29-eth0_g0_31ksoftirqd/023:51:310
121650410irq/29-eth0_g0_31ksoftirqd/023:45:270
121650410irq/29-eth0_g0_31ksoftirqd/021:42:180
121650410irq/29-eth0_g0_31ksoftirqd/000:00:260
121650410irq/29-eth0_g0_15075-21df_abs19:56:240
121650410irq/29-eth0_g0_13-21kworker/0:100:08:320
121410ksoftirqd/1121650irq/29-eth0_g0_23:35:481
268799401cyclictest15703-21unixbench_singl19:56:341
121650400irq/29-eth0_g0_31ksoftirqd/023:16:240
121650400irq/29-eth0_g0_2215-21unixbench_singl19:01:340
121650400irq/29-eth0_g0_1964-21runrttasks21:26:190
121650400irq/29-eth0_g0_14486-21unixbench_singl19:51:350
121650400irq/29-eth0_g0_13-21kworker/0:122:56:020
121650400irq/29-eth0_g0_13-21kworker/0:122:37:230
121650400irq/29-eth0_g0_121ksoftirqd/123:32:420
121400ksoftirqd/1121750irq/30-eth0_g0_23:37:390
121400ksoftirqd/1121750irq/30-eth0_g0_23:31:020
121400ksoftirqd/1121750irq/30-eth0_g0_21:59:230
121400ksoftirqd/1121750irq/30-eth0_g0_21:07:470
121400ksoftirqd/1121750irq/30-eth0_g0_21:07:470
268799396cyclictest121750irq/30-eth0_g0_22:44:511
2687993926cyclictest1964-21runrttasks20:12:041
268799392cyclictest29474-21ntp_kernel_err23:06:281
121750390irq/30-eth0_g0_0-21swapper/122:31:271
121750390irq/30-eth0_g0_0-21swapper/122:11:251
121650390irq/29-eth0_g0_13-21kworker/0:122:13:370
121650390irq/29-eth0_g0_13-21kworker/0:122:07:300
121650390irq/29-eth0_g0_13-21kworker/0:100:24:290
121650390irq/29-eth0_g0_1219-21kworker/1:222:01:291
121650390irq/29-eth0_g0_121ksoftirqd/122:09:301
121390ksoftirqd/1121750irq/30-eth0_g0_23:11:150
121390ksoftirqd/1121750irq/30-eth0_g0_23:04:270
121390ksoftirqd/1121750irq/30-eth0_g0_22:56:170
121390ksoftirqd/1121750irq/30-eth0_g0_22:28:160
121390ksoftirqd/1121750irq/30-eth0_g0_22:04:330
121390ksoftirqd/1121750irq/30-eth0_g0_21:50:040
121390ksoftirqd/1121750irq/30-eth0_g0_21:40:150
121390ksoftirqd/1121750irq/30-eth0_g0_21:19:570
121390ksoftirqd/1121750irq/30-eth0_g0_20:25:010
121390ksoftirqd/1121750irq/30-eth0_g0_20:15:270
121390ksoftirqd/1121750irq/30-eth0_g0_20:10:280
121390ksoftirqd/1121750irq/30-eth0_g0_20:02:120
121390ksoftirqd/1121750irq/30-eth0_g0_19:41:450
121390ksoftirqd/1121750irq/30-eth0_g0_19:22:290
121390ksoftirqd/1121750irq/30-eth0_g0_19:16:250
121390ksoftirqd/1121750irq/30-eth0_g0_00:30:320
121390ksoftirqd/1121750irq/30-eth0_g0_00:04:120
121390ksoftirqd/1121650irq/29-eth0_g0_21:27:021
121390ksoftirqd/1121650irq/29-eth0_g0_20:01:231
268799382cyclictest25444-21grep20:36:361
121750380irq/30-eth0_g0_1219-21kworker/1:223:12:021
121750380irq/30-eth0_g0_1219-21kworker/1:222:28:201
121750380irq/30-eth0_g0_121ksoftirqd/123:48:511
121750380irq/30-eth0_g0_121ksoftirqd/100:24:011
121380ksoftirqd/1121750irq/30-eth0_g0_20:42:170
268799371cyclictest3024-21taskset19:06:281
121750370irq/30-eth0_g0_1219-21kworker/1:221:47:341
121750370irq/30-eth0_g0_0-21swapper/122:56:411
121650370irq/29-eth0_g0_31ksoftirqd/022:42:040
121650370irq/29-eth0_g0_1964-21runrttasks21:11:370
121650370irq/29-eth0_g0_19582crond20:34:120
121650370irq/29-eth0_g0_17393-21ps22:16:300
121650370irq/29-eth0_g0_17393-21ps22:16:300
121650370irq/29-eth0_g0_13-21kworker/0:122:23:220
121650370irq/29-eth0_g0_121ksoftirqd/122:21:571
121650370irq/29-eth0_g0_10382-21cat19:36:280
121370ksoftirqd/1121650irq/29-eth0_g0_19:17:571
268799362cyclictest14332-21awk19:51:331
268799362cyclictest12624-21df19:46:251
268799361cyclictest9196-21sort19:31:291
268799361cyclictest8210-21chrt19:26:351
268799361cyclictest7604-21grep19:26:131
268799361cyclictest1964-21runrttasks20:23:111
268799361cyclictest12372-21ntp_offset21:56:311
121750360irq/30-eth0_g0_31ksoftirqd/023:21:260
121750360irq/30-eth0_g0_29415-21taskset20:54:011
121750360irq/30-eth0_g0_22812-21proc_pri20:26:321
121750360irq/30-eth0_g0_121ksoftirqd/121:17:421
121750360irq/30-eth0_g0_0-21swapper/100:32:071
121650360irq/29-eth0_g0_2935-21df_inode19:06:260
121650360irq/29-eth0_g0_27659-21grep20:46:410
121650360irq/29-eth0_g0_2663-21runrttasks19:06:031
121650360irq/29-eth0_g0_1964-21runrttasks21:00:541
121650360irq/29-eth0_g0_1964-21runrttasks19:34:260
121360ksoftirqd/1121750irq/30-eth0_g0_20:36:410
268799351cyclictest4057-21taskset19:11:251
268799351cyclictest17827-21netstat20:06:301
268799351cyclictest10760-21unixbench_multi19:36:361
121750350irq/30-eth0_g0_1219-21kworker/1:200:14:021
121650350irq/29-eth0_g0_1964-21runrttasks20:41:221
121650350irq/29-eth0_g0_1964-21runrttasks19:29:470
121650350irq/29-eth0_g0_13084-21awk19:46:320
121350ksoftirqd/1121750irq/30-eth0_g0_20:18:300
121650340irq/29-eth0_g0_28793-21chrt20:51:320
121650340irq/29-eth0_g0_1964-21runrttasks21:03:120
268799331cyclictest11799-21proc_pri19:41:331
121750330irq/30-eth0_g0_0-21swapper/120:16:271
121650330irq/29-eth0_g0_4128-21sed19:11:250
121650320irq/29-eth0_g0_29946-21latency20:56:270
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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