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2025-11-25 - 14:52

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 100 highest latencies:
System rack3slot5s.osadl.org (updated Tue Nov 25, 2025 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2009721740sleep1121650irq/29-eth0_g0_11:58:381
1826821290sleep1121750irq/30-eth0_g0_09:39:031
2678821260sleep0121650irq/29-eth0_g0_10:13:320
121970ksoftirqd/1121750irq/30-eth0_g0_10:16:481
121970ksoftirqd/1121750irq/30-eth0_g0_10:16:481
121840ksoftirqd/1121750irq/30-eth0_g0_08:35:101
121840ksoftirqd/1121750irq/30-eth0_g0_08:35:101
297222600sleep1121750irq/30-eth0_g0_12:36:381
238142550sleep1121750irq/30-eth0_g0_12:14:091
248652480sleep1121750irq/30-eth0_g0_12:17:071
248652480sleep1121750irq/30-eth0_g0_12:17:071
121480ksoftirqd/1121750irq/30-eth0_g0_09:28:071
121470ksoftirqd/1121750irq/30-eth0_g0_11:22:431
121470ksoftirqd/1121750irq/30-eth0_g0_09:22:071
121470ksoftirqd/1121650irq/29-eth0_g0_09:29:230
121750460irq/30-eth0_g0_1219-21kworker/1:212:27:071
121750450irq/30-eth0_g0_13552-21unixbench_singl07:05:021
121650450irq/29-eth0_g0_17023-21taskset11:45:110
121450ksoftirqd/1121650irq/29-eth0_g0_08:51:311
121750440irq/30-eth0_g0_1219-21kworker/1:211:43:371
121750440irq/30-eth0_g0_1219-21kworker/1:209:44:031
121440ksoftirqd/1121650irq/29-eth0_g0_10:32:371
121440ksoftirqd/1121650irq/29-eth0_g0_10:02:501
121750430irq/30-eth0_g0_1219-21kworker/1:212:23:231
121750430irq/30-eth0_g0_1219-21kworker/1:210:13:221
121750430irq/30-eth0_g0_1219-21kworker/1:210:07:201
121750430irq/30-eth0_g0_1219-21kworker/1:209:29:511
121650430irq/29-eth0_g0_13498-21unixbench_multi07:05:010
121430ksoftirqd/1121750irq/30-eth0_g0_09:12:591
121430ksoftirqd/1121650irq/29-eth0_g0_10:50:261
121750420irq/30-eth0_g0_1219-21kworker/1:212:03:411
121750420irq/30-eth0_g0_121ksoftirqd/110:35:361
121650420irq/29-eth0_g0_1894-21runrttasks10:36:420
121650420irq/29-eth0_g0_13-21kworker/0:109:49:550
121650420irq/29-eth0_g0_13-21kworker/0:109:16:070
121420ksoftirqd/1121650irq/29-eth0_g0_08:20:021
1401099412cyclictest11779-21df11:24:511
1401099411cyclictest9393-21df11:14:511
121750410irq/30-eth0_g0_14008-21cyclictest09:45:001
121750410irq/30-eth0_g0_1219-21kworker/1:211:05:391
121750410irq/30-eth0_g0_1219-21kworker/1:211:05:391
121650410irq/29-eth0_g0_31ksoftirqd/012:25:520
121650410irq/29-eth0_g0_1894-21runrttasks08:38:100
121650410irq/29-eth0_g0_1894-21runrttasks08:38:100
121650410irq/29-eth0_g0_13-21kworker/0:111:55:490
121650410irq/29-eth0_g0_13-21kworker/0:109:37:160
121410ksoftirqd/1121750irq/30-eth0_g0_11:47:421
121410ksoftirqd/1121750irq/30-eth0_g0_07:19:380
121410ksoftirqd/1121650irq/29-eth0_g0_12:04:491
121750400irq/30-eth0_g0_0-21swapper/109:56:011
121650400irq/29-eth0_g0_31ksoftirqd/012:12:130
121650400irq/29-eth0_g0_31ksoftirqd/008:29:500
121650400irq/29-eth0_g0_13-21kworker/0:111:40:130
121650400irq/29-eth0_g0_13-21kworker/0:111:34:510
121650400irq/29-eth0_g0_13-21kworker/0:110:56:560
121650400irq/29-eth0_g0_13-21kworker/0:109:45:370
121650400irq/29-eth0_g0_13-21kworker/0:109:20:530
121650400irq/29-eth0_g0_121ksoftirqd/111:19:000
121650400irq/29-eth0_g0_0-21swapper/012:04:550
121650400irq/29-eth0_g0_0-21swapper/010:04:100
121400ksoftirqd/1121750irq/30-eth0_g0_12:19:190
121400ksoftirqd/1121750irq/30-eth0_g0_12:19:190
121400ksoftirqd/1121750irq/30-eth0_g0_11:27:030
121400ksoftirqd/1121750irq/30-eth0_g0_11:09:420
121400ksoftirqd/1121750irq/30-eth0_g0_10:24:541
121400ksoftirqd/1121750irq/30-eth0_g0_07:25:290
121400ksoftirqd/1121650irq/29-eth0_g0_07:34:521
1401099391cyclictest5503-21cat10:59:391
1401099391cyclictest20863-21/usr/sbin/munin09:50:011
121750390irq/30-eth0_g0_1894-21runrttasks08:06:451
121750390irq/30-eth0_g0_1894-21runrttasks08:06:451
121750390irq/30-eth0_g0_0-21swapper/112:34:231
121750390irq/30-eth0_g0_0-21swapper/109:17:001
121650390irq/29-eth0_g0_31ksoftirqd/012:03:310
121650390irq/29-eth0_g0_27443-21ps10:15:000
121650390irq/29-eth0_g0_27443-21ps10:15:000
121650390irq/29-eth0_g0_13-21kworker/0:112:20:170
121650390irq/29-eth0_g0_13-21kworker/0:110:08:320
121650390irq/29-eth0_g0_121ksoftirqd/111:29:431
121390ksoftirqd/1121750irq/30-eth0_g0_11:31:120
121390ksoftirqd/1121750irq/30-eth0_g0_11:09:030
121390ksoftirqd/1121750irq/30-eth0_g0_11:09:030
121390ksoftirqd/1121750irq/30-eth0_g0_10:50:320
121390ksoftirqd/1121750irq/30-eth0_g0_10:47:380
121390ksoftirqd/1121750irq/30-eth0_g0_10:41:460
121390ksoftirqd/1121750irq/30-eth0_g0_10:41:460
121390ksoftirqd/1121750irq/30-eth0_g0_10:28:350
121390ksoftirqd/1121750irq/30-eth0_g0_09:56:080
121390ksoftirqd/1121750irq/30-eth0_g0_09:14:030
121390ksoftirqd/1121750irq/30-eth0_g0_09:06:370
121390ksoftirqd/1121750irq/30-eth0_g0_08:55:190
121390ksoftirqd/1121750irq/30-eth0_g0_08:51:320
121390ksoftirqd/1121750irq/30-eth0_g0_08:21:280
121390ksoftirqd/1121750irq/30-eth0_g0_08:19:350
121390ksoftirqd/1121750irq/30-eth0_g0_07:59:590
121390ksoftirqd/1121750irq/30-eth0_g0_07:52:370
121390ksoftirqd/1121750irq/30-eth0_g0_07:44:150
121390ksoftirqd/1121650irq/29-eth0_g0_11:53:360
121390ksoftirqd/1121650irq/29-eth0_g0_11:00:560
1401099381cyclictest8862sleep110:39:531
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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