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2025-11-17 - 17:08

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 Mon Nov 17, 2025 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1211000ksoftirqd/1121750irq/30-eth0_g0_09:21:181
121780ksoftirqd/1300812sleep010:43:120
121610ksoftirqd/148662sleep011:11:330
121550ksoftirqd/1121750irq/30-eth0_g0_11:27:551
121520ksoftirqd/1121750irq/30-eth0_g0_12:21:011
310832510sleep1121650irq/29-eth0_g0_10:45:351
151162510sleep0121650irq/29-eth0_g0_07:30:090
121750500irq/30-eth0_g0_1219-21kworker/1:210:10:171
121490ksoftirqd/1121750irq/30-eth0_g0_12:25:071
121490ksoftirqd/1121650irq/29-eth0_g0_07:35:120
121480ksoftirqd/1121750irq/30-eth0_g0_12:34:041
121460ksoftirqd/1121750irq/30-eth0_g0_11:19:031
121460ksoftirqd/1121750irq/30-eth0_g0_11:19:031
121460ksoftirqd/1121750irq/30-eth0_g0_09:11:061
121750450irq/30-eth0_g0_13732-21munin-run11:49:561
121650450irq/29-eth0_g0_31ksoftirqd/010:25:110
121650450irq/29-eth0_g0_121ksoftirqd/109:21:260
136142440chrt121650irq/29-eth0_g0_11:48:340
121750440irq/30-eth0_g0_116862sleep109:27:251
121440ksoftirqd/1121750irq/30-eth0_g0_07:20:130
63742430sleep0121650irq/29-eth0_g0_11:19:550
63742430sleep0121650irq/29-eth0_g0_11:19:550
121750430irq/30-eth0_g0_13125-21munin-run09:34:561
121750430irq/30-eth0_g0_1219-21kworker/1:209:43:581
121650430irq/29-eth0_g0_21559-21awk07:55:160
121750420irq/30-eth0_g0_1219-21kworker/1:210:35:151
121750420irq/30-eth0_g0_1219-21kworker/1:210:35:151
121650420irq/29-eth0_g0_1894-21runrttasks07:47:300
121650420irq/29-eth0_g0_13-21kworker/0:110:22:250
121650420irq/29-eth0_g0_13-21kworker/0:110:01:260
121650420irq/29-eth0_g0_0-21swapper/007:05:130
277432410sleep1121750irq/30-eth0_g0_10:34:301
121750410irq/30-eth0_g0_302182sleep110:44:471
121750410irq/30-eth0_g0_1219-21kworker/1:210:05:221
121750410irq/30-eth0_g0_1219-21kworker/1:210:05:221
121750410irq/30-eth0_g0_121ksoftirqd/110:29:211
121650410irq/29-eth0_g0_31ksoftirqd/011:20:070
121650410irq/29-eth0_g0_31ksoftirqd/009:35:500
121650410irq/29-eth0_g0_13-21kworker/0:109:19:020
121410ksoftirqd/1121750irq/30-eth0_g0_11:22:321
121410ksoftirqd/1121650irq/29-eth0_g0_07:30:031
121750400irq/30-eth0_g0_1219-21kworker/1:211:38:281
121750400irq/30-eth0_g0_121ksoftirqd/110:24:001
121750400irq/30-eth0_g0_121ksoftirqd/109:54:061
121650400irq/29-eth0_g0_31ksoftirqd/012:30:300
121650400irq/29-eth0_g0_31ksoftirqd/010:38:010
121650400irq/29-eth0_g0_31ksoftirqd/010:38:010
121650400irq/29-eth0_g0_13-21kworker/0:112:17:350
121650400irq/29-eth0_g0_13-21kworker/0:111:41:190
121650400irq/29-eth0_g0_13-21kworker/0:111:28:490
121650400irq/29-eth0_g0_13-21kworker/0:110:30:320
121650400irq/29-eth0_g0_127802sleep009:30:530
121650400irq/29-eth0_g0_121ksoftirqd/111:03:361
121650400irq/29-eth0_g0_1007099cyclictest12:10:180
121650400irq/29-eth0_g0_1007099cyclictest09:10:460
121400ksoftirqd/1121750irq/30-eth0_g0_10:53:020
121400ksoftirqd/1121650irq/29-eth0_g0_12:19:111
121400ksoftirqd/1121650irq/29-eth0_g0_11:40:331
121400ksoftirqd/1121650irq/29-eth0_g0_09:47:151
121400ksoftirqd/1121650irq/29-eth0_g0_08:05:401
121400ksoftirqd/1121650irq/29-eth0_g0_08:05:401
10071994035cyclictest9509-21cat09:19:561
1007199402cyclictest23628-21sed10:15:271
1007199401cyclictest7006-21diskmemload11:08:061
1007199401cyclictest32014-21ps10:50:181
1007199401cyclictest18099-21sort12:05:211
1007199401cyclictest18099-21sort12:05:211
278762390chrt27883-21timerandwakeup08:20:210
160022390sleep1121750irq/30-eth0_g0_11:57:531
121750390irq/30-eth0_g0_31ksoftirqd/009:52:240
121750390irq/30-eth0_g0_1219-21kworker/1:212:00:001
121750390irq/30-eth0_g0_1219-21kworker/1:211:31:261
121650390irq/29-eth0_g0_31ksoftirqd/010:17:310
121650390irq/29-eth0_g0_22678-21memory12:25:130
121650390irq/29-eth0_g0_179002chrt07:40:170
121650390irq/29-eth0_g0_13-21kworker/0:110:55:240
121650390irq/29-eth0_g0_13-21kworker/0:109:43:390
121650390irq/29-eth0_g0_13-21kworker/0:109:27:490
121390ksoftirqd/1121750irq/30-eth0_g0_10:05:430
121390ksoftirqd/1121750irq/30-eth0_g0_10:05:430
121390ksoftirqd/1121750irq/30-eth0_g0_09:56:500
121390ksoftirqd/1121750irq/30-eth0_g0_07:19:450
1007199392cyclictest14084-21latency07:25:131
1007199392cyclictest14084-21latency07:25:131
1007199391cyclictest14402-21latency_hist09:39:571
1007199391cyclictest1124-21forks08:45:121
256342380sleep1121650irq/29-eth0_g0_12:36:081
256342380sleep1121650irq/29-eth0_g0_12:36:081
121750380irq/30-eth0_g0_121ksoftirqd/110:59:521
121650380irq/29-eth0_g0_1894-21runrttasks07:10:570
121650380irq/29-eth0_g0_16874-21ls12:00:200
121650380irq/29-eth0_g0_13-21kworker/0:112:37:110
121650380irq/29-eth0_g0_13-21kworker/0:112:37:110
121650380irq/29-eth0_g0_13-21kworker/0:112:06:020
121650380irq/29-eth0_g0_13-21kworker/0:112:06:020
121650380irq/29-eth0_g0_13-21kworker/0:111:33:000
121650380irq/29-eth0_g0_13-21kworker/0:111:05:380
121650380irq/29-eth0_g0_13-21kworker/0:111:01:190
121650380irq/29-eth0_g0_13-21kworker/0:110:12:330
121650380irq/29-eth0_g0_13-21kworker/0:109:48:010
121650380irq/29-eth0_g0_121ksoftirqd/112:21:290
121650380irq/29-eth0_g0_121ksoftirqd/110:02:091
121650380irq/29-eth0_g0_0-21swapper/007:50:150
121380ksoftirqd/1121650irq/29-eth0_g0_09:59:231
121380ksoftirqd/1121650irq/29-eth0_g0_08:11:061
121380ksoftirqd/1121650irq/29-eth0_g0_07:52:131
121750370irq/30-eth0_g0_1219-21kworker/1:211:50:191
121650370irq/29-eth0_g0_5280-21sed09:00:210
121650370irq/29-eth0_g0_26742-21unixbench_singl08:15:230
121650370irq/29-eth0_g0_1894-21runrttasks11:56:100
121650370irq/29-eth0_g0_1894-21runrttasks09:07:170
121650370irq/29-eth0_g0_1894-21runrttasks08:25:150
121650370irq/29-eth0_g0_1894-21runrttasks08:06:520
121650370irq/29-eth0_g0_1894-21runrttasks08:06:520
121650370irq/29-eth0_g0_13-21kworker/0:111:52:220
121650370irq/29-eth0_g0_13-21kworker/0:111:36:190
121650370irq/29-eth0_g0_13-21kworker/0:110:46:020
1007199371cyclictest4699-21grep11:10:211
1007199371cyclictest4658-21egrep09:00:101
1007199371cyclictest36632sleep108:55:121
1007199371cyclictest31330-21/usr/sbin/munin08:35:151
1007199371cyclictest16883-21chrt07:35:181
121750360irq/30-eth0_g0_23091-21unixbench_singl08:00:191
121750360irq/30-eth0_g0_23091-21unixbench_singl08:00:191
121750360irq/30-eth0_g0_19085-21netstat12:10:141
121650360irq/29-eth0_g0_9690-21runrttasks07:05:391
121650360irq/29-eth0_g0_22691-21missed_timers08:00:130
121650360irq/29-eth0_g0_22691-21missed_timers08:00:130
121650360irq/29-eth0_g0_1894-21runrttasks08:58:030
121650360irq/29-eth0_g0_1894-21runrttasks08:54:210
121650360irq/29-eth0_g0_1894-21runrttasks08:14:450
1007199361cyclictest32237-21grep08:40:081
1007199361cyclictest32237-21grep08:40:081
1007199361cyclictest27746-21ps08:20:191
121650350irq/29-eth0_g0_32562-21ntpq08:40:140
121650350irq/29-eth0_g0_32562-21ntpq08:40:140
121650350irq/29-eth0_g0_29795-21df_abs08:30:100
121650350irq/29-eth0_g0_1894-21runrttasks08:35:160
121650350irq/29-eth0_g0_13838-21cpu07:25:090
121650350irq/29-eth0_g0_13838-21cpu07:25:090
1007199352cyclictest2041-21lldpd07:41:221
1007199351cyclictest28963-21wc08:25:181
1007199351cyclictest26331-21latency08:15:161
1007199351cyclictest2493-21chrt08:50:121
1007199351cyclictest21843-21unixbench_singl07:55:211
1007199351cyclictest19008-21cat07:45:141
1007199351cyclictest13736-21taskset07:24:571
1007199351cyclictest12512-21latency_hist07:19:561
1007199351cyclictest0-21swapper/107:10:141
1007199341cyclictest30025-21missed_timers08:30:131
121650330irq/29-eth0_g0_1074-21df_abs08:45:100
1007199331cyclictest62692chrt09:05:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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