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2025-11-20 - 19:58

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 Thu Nov 20, 2025 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
360521160sleep1121650irq/29-eth0_g0_12:08:231
121880ksoftirqd/1121750irq/30-eth0_g0_09:00:111
121880ksoftirqd/1121750irq/30-eth0_g0_09:00:111
121780ksoftirqd/1121750irq/30-eth0_g0_10:30:550
130052760sleep1121650irq/29-eth0_g0_08:20:131
130052760sleep1121650irq/29-eth0_g0_08:20:131
8042730sleep1121750irq/30-eth0_g0_09:45:051
319412610sleep1121750irq/30-eth0_g0_07:25:101
45532550sleep1121750irq/30-eth0_g0_12:10:121
121540ksoftirqd/1121750irq/30-eth0_g0_11:27:441
121500ksoftirqd/1121750irq/30-eth0_g0_11:36:381
121500ksoftirqd/1121750irq/30-eth0_g0_09:30:090
184402490chrt121650irq/29-eth0_g0_10:55:110
262522480sleep0121650irq/29-eth0_g0_11:28:360
121650470irq/29-eth0_g0_509-21ntp_offset11:55:050
121470ksoftirqd/1121750irq/30-eth0_g0_10:27:491
121470ksoftirqd/1121750irq/30-eth0_g0_09:50:421
61912460sleep0121650irq/29-eth0_g0_10:05:080
121750450irq/30-eth0_g0_1219-21kworker/1:209:10:051
121450ksoftirqd/1121750irq/30-eth0_g0_10:13:591
82902440sleep1121750irq/30-eth0_g0_10:15:031
121750440irq/30-eth0_g0_1219-21kworker/1:209:39:131
121650440irq/29-eth0_g0_27146-21unixbench_singl07:05:100
121650440irq/29-eth0_g0_27146-21unixbench_singl07:05:100
121440ksoftirqd/1121750irq/30-eth0_g0_11:47:091
121440ksoftirqd/1121750irq/30-eth0_g0_11:30:051
121440ksoftirqd/1121750irq/30-eth0_g0_10:45:391
121440ksoftirqd/1121750irq/30-eth0_g0_10:20:470
121440ksoftirqd/1121650irq/29-eth0_g0_12:31:331
121440ksoftirqd/1121650irq/29-eth0_g0_07:30:041
121750430irq/30-eth0_g0_1219-21kworker/1:211:20:361
121750430irq/30-eth0_g0_1219-21kworker/1:209:30:151
121430ksoftirqd/1121750irq/30-eth0_g0_10:03:041
121430ksoftirqd/1121750irq/30-eth0_g0_09:39:480
121430ksoftirqd/1121650irq/29-eth0_g0_10:51:570
121430ksoftirqd/1121650irq/29-eth0_g0_09:55:511
5242420sleep0121750irq/30-eth0_g0_09:43:240
121750420irq/30-eth0_g0_1219-21kworker/1:211:09:031
121650420irq/29-eth0_g0_31ksoftirqd/009:00:020
121650420irq/29-eth0_g0_31ksoftirqd/009:00:020
121650420irq/29-eth0_g0_121ksoftirqd/110:47:320
121420ksoftirqd/1121650irq/29-eth0_g0_09:41:391
102572420chrt121750irq/30-eth0_g0_12:35:061
98442410sleep0121650irq/29-eth0_g0_12:34:470
121750410irq/30-eth0_g0_31ksoftirqd/012:17:280
121750410irq/30-eth0_g0_121ksoftirqd/110:55:021
121650410irq/29-eth0_g0_7396-21seq12:24:490
121650410irq/29-eth0_g0_13-21kworker/0:111:35:140
121650410irq/29-eth0_g0_13-21kworker/0:110:27:480
121650410irq/29-eth0_g0_121ksoftirqd/111:32:220
121410ksoftirqd/1121750irq/30-eth0_g0_10:08:281
121410ksoftirqd/1121650irq/29-eth0_g0_12:28:521
46402400sleep0121750irq/30-eth0_g0_12:11:100
2760699402cyclictest24061-21tail09:05:091
2760699401cyclictest31640-21memory11:50:061
2760699401cyclictest28330-21grep07:10:111
121750400irq/30-eth0_g0_1219-21kworker/1:212:18:501
121750400irq/30-eth0_g0_1219-21kworker/1:211:01:351
121750400irq/30-eth0_g0_121ksoftirqd/111:55:351
121750400irq/30-eth0_g0_0-21swapper/110:40:141
121650400irq/29-eth0_g0_4682-21iostat10:00:040
121650400irq/29-eth0_g0_31ksoftirqd/010:13:550
121650400irq/29-eth0_g0_31ksoftirqd/009:52:520
121650400irq/29-eth0_g0_29297-21ntp_states11:40:070
121650400irq/29-eth0_g0_19582-21grep11:00:100
121650400irq/29-eth0_g0_13-21kworker/0:112:06:130
121650400irq/29-eth0_g0_13-21kworker/0:112:03:080
121650400irq/29-eth0_g0_13-21kworker/0:111:49:270
121650400irq/29-eth0_g0_13-21kworker/0:109:57:050
121400ksoftirqd/1121750irq/30-eth0_g0_11:52:290
121400ksoftirqd/1121750irq/30-eth0_g0_09:22:430
121400ksoftirqd/1121650irq/29-eth0_g0_09:18:321
121400ksoftirqd/1121650irq/29-eth0_g0_07:23:061
121750390irq/30-eth0_g0_121ksoftirqd/109:26:391
121750390irq/30-eth0_g0_0-21swapper/110:54:201
121650390irq/29-eth0_g0_31ksoftirqd/010:41:390
121650390irq/29-eth0_g0_23157-21ntp_kernel_err11:15:060
121650390irq/29-eth0_g0_23157-21ntp_kernel_err11:15:060
121650390irq/29-eth0_g0_19742-21/usr/sbin/munin08:50:010
121650390irq/29-eth0_g0_1894-21runrttasks09:18:150
121650390irq/29-eth0_g0_13-21kworker/0:110:39:500
121650390irq/29-eth0_g0_121ksoftirqd/111:09:230
121390ksoftirqd/1121750irq/30-eth0_g0_12:35:320
121390ksoftirqd/1121750irq/30-eth0_g0_10:15:350
121390ksoftirqd/1121750irq/30-eth0_g0_09:27:050
121390ksoftirqd/1121750irq/30-eth0_g0_08:08:000
121390ksoftirqd/1121650irq/29-eth0_g0_12:01:511
121390ksoftirqd/1121650irq/29-eth0_g0_09:22:521
121390ksoftirqd/1121650irq/29-eth0_g0_08:54:391
2760699382cyclictest19161-21tail08:45:101
121750380irq/30-eth0_g0_27084-21grep07:05:101
121750380irq/30-eth0_g0_27084-21grep07:05:101
121750380irq/30-eth0_g0_1219-21kworker/1:211:10:441
121750380irq/30-eth0_g0_1219-21kworker/1:211:10:441
121750380irq/30-eth0_g0_1219-21kworker/1:210:37:151
121750380irq/30-eth0_g0_1219-21kworker/1:210:31:521
121750380irq/30-eth0_g0_0-21swapper/112:23:041
121650380irq/29-eth0_g0_31ksoftirqd/007:10:070
121650380irq/29-eth0_g0_13-21kworker/0:109:45:330
2760699372cyclictest4089-21irqstats07:45:061
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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