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2025-07-07 - 02:15

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 Mon Jul 07, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1589821680sleep02288650irq/29-eth0_g0_23:39:270
121850ksoftirqd/12288750irq/30-eth0_g0_22:22:390
121830ksoftirqd/12288750irq/30-eth0_g0_20:39:251
297222790sleep12288750irq/30-eth0_g0_22:23:151
76132770sleep12288650irq/29-eth0_g0_20:53:141
285612690sleep02288750irq/30-eth0_g0_20:08:060
313012630sleep02288750irq/30-eth0_g0_22:31:120
121620ksoftirqd/12288750irq/30-eth0_g0_20:28:101
37592560sleep02288750irq/30-eth0_g0_22:50:530
235512530sleep02288650irq/29-eth0_g0_00:12:520
178312530sleep12288650irq/29-eth0_g0_19:23:121
177282530sleep02288750irq/30-eth0_g0_21:35:100
249522520sleep02288750irq/30-eth0_g0_22:03:360
121520ksoftirqd/12288650irq/29-eth0_g0_00:09:351
121510ksoftirqd/12288750irq/30-eth0_g0_23:48:170
121510ksoftirqd/12288750irq/30-eth0_g0_23:33:051
219402500sleep02288750irq/30-eth0_g0_00:03:260
121500ksoftirqd/12288650irq/29-eth0_g0_22:34:041
121500ksoftirqd/12288650irq/29-eth0_g0_21:40:521
121480ksoftirqd/12288750irq/30-eth0_g0_23:40:181
121480ksoftirqd/12288650irq/29-eth0_g0_23:09:371
121470ksoftirqd/12288650irq/29-eth0_g0_23:50:071
50542460sleep02288650irq/29-eth0_g0_22:56:420
220392460sleep12288750irq/30-eth0_g0_00:04:371
121460ksoftirqd/12288750irq/30-eth0_g0_23:31:231
121460ksoftirqd/12288650irq/29-eth0_g0_22:47:421
121460ksoftirqd/12288650irq/29-eth0_g0_00:15:370
121450ksoftirqd/12288650irq/29-eth0_g0_23:59:331
275112440sleep02288650irq/29-eth0_g0_22:14:510
2288650440irq/29-eth0_g0_31ksoftirqd/023:18:190
121440ksoftirqd/12288650irq/29-eth0_g0_19:33:081
2288750430irq/30-eth0_g0_22885-21kworker/0:221:18:180
2288650430irq/29-eth0_g0_470-21kworker/1:122:20:451
121430ksoftirqd/12288750irq/30-eth0_g0_21:52:331
121430ksoftirqd/12288750irq/30-eth0_g0_20:39:160
121430ksoftirqd/12288650irq/29-eth0_g0_22:08:131
121430ksoftirqd/12288650irq/29-eth0_g0_20:48:091
2288650420irq/29-eth0_g0_470-21kworker/1:121:16:141
2288650420irq/29-eth0_g0_121ksoftirqd/123:15:031
121420ksoftirqd/12288750irq/30-eth0_g0_00:20:541
121420ksoftirqd/12288650irq/29-eth0_g0_23:13:560
121420ksoftirqd/12288650irq/29-eth0_g0_22:03:081
121420ksoftirqd/12288650irq/29-eth0_g0_21:20:401
84902410sleep02288750irq/30-eth0_g0_23:08:550
2288750410irq/30-eth0_g0_31ksoftirqd/022:08:110
2288750410irq/30-eth0_g0_23885-21sshd22:00:260
2288750410irq/30-eth0_g0_22885-21kworker/0:221:39:140
2288750410irq/30-eth0_g0_22885-21kworker/0:200:23:440
2288650410irq/29-eth0_g0_7398-21taskset23:05:281
2288650410irq/29-eth0_g0_121ksoftirqd/122:58:111
2288650410irq/29-eth0_g0_0-21swapper/121:36:591
121410ksoftirqd/12288650irq/29-eth0_g0_00:35:171
121410ksoftirqd/12288650irq/29-eth0_g0_00:35:171
2288750400irq/30-eth0_g0_22885-21kworker/0:223:23:070
2288750400irq/30-eth0_g0_22885-21kworker/0:200:18:250
2288750400irq/30-eth0_g0_121ksoftirqd/121:30:430
2288650400irq/29-eth0_g0_31ksoftirqd/000:36:430
2288650400irq/29-eth0_g0_31ksoftirqd/000:36:430
2288650400irq/29-eth0_g0_1359499cyclictest20:58:151
2288650400irq/29-eth0_g0_0-21swapper/123:21:001
2288750390irq/30-eth0_g0_27697-21nfs_client00:28:100
2288750390irq/30-eth0_g0_27697-21nfs_client00:28:100
2288750390irq/30-eth0_g0_22885-21kworker/0:222:45:190
2288750390irq/30-eth0_g0_22885-21kworker/0:221:45:180
2288750390irq/30-eth0_g0_22885-21kworker/0:221:26:370
2288750390irq/30-eth0_g0_134502sleep023:29:340
2288750390irq/30-eth0_g0_0-21swapper/023:02:230
2288650390irq/29-eth0_g0_470-21kworker/1:121:28:081
2288650390irq/29-eth0_g0_470-21kworker/1:100:28:071
2288650390irq/29-eth0_g0_470-21kworker/1:100:28:071
2288650390irq/29-eth0_g0_31ksoftirqd/023:03:560
2288650390irq/29-eth0_g0_23738-21irqstats19:48:071
2288650390irq/29-eth0_g0_23643-21unixbench_singl21:58:151
2288650390irq/29-eth0_g0_121ksoftirqd/122:53:521
2288650390irq/29-eth0_g0_0-21swapper/019:02:590
121390ksoftirqd/12288650irq/29-eth0_g0_22:40:421
121390ksoftirqd/12288650irq/29-eth0_g0_20:43:151
121390ksoftirqd/12288650irq/29-eth0_g0_20:11:391
121390ksoftirqd/12288650irq/29-eth0_g0_20:03:441
121390ksoftirqd/12288650irq/29-eth0_g0_19:13:111
2288750380irq/30-eth0_g0_6871-21sshd20:52:140
2288750380irq/30-eth0_g0_22885-21kworker/0:223:58:160
2288750380irq/30-eth0_g0_22885-21kworker/0:222:40:160
2288750380irq/30-eth0_g0_22885-21kworker/0:222:23:140
2288750380irq/30-eth0_g0_22885-21kworker/0:221:53:110
2288750380irq/30-eth0_g0_22851-21ls19:43:130
2288750380irq/30-eth0_g0_19882-21sort23:57:520
2288750380irq/30-eth0_g0_12514-21wc21:13:160
2288650380irq/29-eth0_g0_470-21kworker/1:100:24:431
2288650380irq/29-eth0_g0_12754-21missed_timers19:03:111
121380ksoftirqd/12288750irq/30-eth0_g0_20:06:360
121380ksoftirqd/12288650irq/29-eth0_g0_21:12:181
121380ksoftirqd/12288650irq/29-eth0_g0_00:13:031
2288750370irq/30-eth0_g0_32186-21unixbench_multi22:33:180
2288750370irq/30-eth0_g0_22885-21kworker/0:223:44:000
2288750370irq/30-eth0_g0_22885-21kworker/0:223:34:380
2288650370irq/29-eth0_g0_470-21kworker/1:122:50:151
2288650370irq/29-eth0_g0_470-21kworker/1:122:31:461
2288650370irq/29-eth0_g0_30287-21unixbench_multi20:13:131
2288650370irq/29-eth0_g0_121ksoftirqd/121:53:341
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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