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2025-09-17 - 19:53

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 all highest latencies:
System rack3slot5s.osadl.org (updated Wed Sep 17, 2025 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121550ksoftirqd/1399050irq/30-eth0_g0_12:00:311
121550ksoftirqd/1399050irq/30-eth0_g0_12:00:311
121540ksoftirqd/1399050irq/30-eth0_g0_11:42:021
121490ksoftirqd/1399050irq/30-eth0_g0_11:13:101
121490ksoftirqd/1399050irq/30-eth0_g0_11:13:101
121480ksoftirqd/1399050irq/30-eth0_g0_12:25:121
121470ksoftirqd/1399050irq/30-eth0_g0_11:53:481
399050450irq/30-eth0_g0_5128-21irqstats10:20:181
121440ksoftirqd/1399050irq/30-eth0_g0_11:30:391
399050420irq/30-eth0_g0_470-21kworker/1:111:57:591
399050420irq/30-eth0_g0_470-21kworker/1:111:57:591
399050420irq/30-eth0_g0_470-21kworker/1:111:06:001
399050420irq/30-eth0_g0_470-21kworker/1:109:21:011
399050420irq/30-eth0_g0_470-21kworker/1:109:18:021
399050420irq/30-eth0_g0_470-21kworker/1:109:10:231
398950420irq/29-eth0_g0_5570-21unixbench_multi07:00:260
121420ksoftirqd/1399050irq/30-eth0_g0_10:32:331
121420ksoftirqd/1398950irq/29-eth0_g0_12:05:371
121420ksoftirqd/1398950irq/29-eth0_g0_11:50:120
399050410irq/30-eth0_g0_470-21kworker/1:110:07:381
398950410irq/29-eth0_g0_31ksoftirqd/010:20:200
398950410irq/29-eth0_g0_22885-21kworker/0:211:55:190
398950410irq/29-eth0_g0_22885-21kworker/0:211:55:190
398950410irq/29-eth0_g0_10472-21vmstat10:50:390
121410ksoftirqd/1398950irq/29-eth0_g0_10:00:261
399050400irq/30-eth0_g0_470-21kworker/1:112:11:201
399050400irq/30-eth0_g0_470-21kworker/1:109:26:091
399050400irq/30-eth0_g0_31ksoftirqd/009:33:120
398950400irq/29-eth0_g0_31ksoftirqd/011:50:000
398950400irq/29-eth0_g0_31ksoftirqd/011:41:550
398950400irq/29-eth0_g0_22885-21kworker/0:212:20:160
398950400irq/29-eth0_g0_22885-21kworker/0:210:45:260
398950400irq/29-eth0_g0_22885-21kworker/0:209:53:390
398950400irq/29-eth0_g0_22885-21kworker/0:209:40:190
398950400irq/29-eth0_g0_11868-21proc_pri07:40:240
398950400irq/29-eth0_g0_11868-21proc_pri07:40:240
398950400irq/29-eth0_g0_1043-21iostat09:55:180
121400ksoftirqd/1399050irq/30-eth0_g0_11:35:420
121400ksoftirqd/1399050irq/30-eth0_g0_10:59:570
121400ksoftirqd/1398950irq/29-eth0_g0_10:08:160
568199391cyclictest3956-21grep10:10:281
399050390irq/30-eth0_g0_470-21kworker/1:110:59:541
399050390irq/30-eth0_g0_31ksoftirqd/012:07:240
399050390irq/30-eth0_g0_121ksoftirqd/110:28:470
399050390irq/30-eth0_g0_121ksoftirqd/110:27:481
398950390irq/29-eth0_g0_25798-21unixbench_singl12:25:280
398950390irq/29-eth0_g0_22885-21kworker/0:212:17:550
398950390irq/29-eth0_g0_22885-21kworker/0:211:30:470
398950390irq/29-eth0_g0_22885-21kworker/0:210:38:180
121390ksoftirqd/1399050irq/30-eth0_g0_11:11:090
121390ksoftirqd/1399050irq/30-eth0_g0_11:11:090
121390ksoftirqd/1399050irq/30-eth0_g0_10:43:010
121390ksoftirqd/1398950irq/29-eth0_g0_11:15:451
568199382cyclictest4088-21/usr/sbin/munin10:15:271
568199381cyclictest24938-21tail12:20:251
568199381cyclictest22681-21latency_hist08:50:031
568199381cyclictest22681-21latency_hist08:50:031
399050380irq/30-eth0_g0_470-21kworker/1:112:32:181
399050380irq/30-eth0_g0_470-21kworker/1:111:29:081
399050380irq/30-eth0_g0_470-21kworker/1:110:54:261
399050380irq/30-eth0_g0_470-21kworker/1:110:42:001
399050380irq/30-eth0_g0_470-21kworker/1:109:42:251
399050380irq/30-eth0_g0_470-21kworker/1:109:38:541
399050380irq/30-eth0_g0_121ksoftirqd/109:07:281
399050380irq/30-eth0_g0_0-21swapper/111:21:581
398950380irq/29-eth0_g0_568099cyclictest11:07:190
398950380irq/29-eth0_g0_22885-21kworker/0:212:31:290
398950380irq/29-eth0_g0_22885-21kworker/0:212:01:120
398950380irq/29-eth0_g0_22885-21kworker/0:212:01:120
398950380irq/29-eth0_g0_22885-21kworker/0:210:16:310
398950380irq/29-eth0_g0_22885-21kworker/0:210:00:120
398950380irq/29-eth0_g0_22885-21kworker/0:209:48:440
398950380irq/29-eth0_g0_22885-21kworker/0:209:27:510
398950380irq/29-eth0_g0_22885-21kworker/0:209:21:430
398950380irq/29-eth0_g0_22885-21kworker/0:209:11:550
398950380irq/29-eth0_g0_121ksoftirqd/110:37:281
398950380irq/29-eth0_g0_121ksoftirqd/109:51:071
121380ksoftirqd/1398950irq/29-eth0_g0_10:00:041
121380ksoftirqd/1398950irq/29-eth0_g0_09:37:230
568199371cyclictest9616-21grep07:25:261
568199371cyclictest25101-21diskmemload11:45:231
568199371cyclictest25101-21diskmemload11:35:261
568199371cyclictest14586-21cat08:00:031
399050370irq/30-eth0_g0_5084-21sed07:00:171
399050370irq/30-eth0_g0_470-21kworker/1:109:30:081
399050370irq/30-eth0_g0_31ksoftirqd/011:28:240
399050370irq/30-eth0_g0_0-21swapper/109:46:361
398950370irq/29-eth0_g0_6806-21memory10:30:210
398950370irq/29-eth0_g0_22885-21kworker/0:212:13:550
398950370irq/29-eth0_g0_22885-21kworker/0:211:21:480
398950370irq/29-eth0_g0_22885-21kworker/0:211:19:530
398950370irq/29-eth0_g0_22885-21kworker/0:211:02:150
398950370irq/29-eth0_g0_22885-21kworker/0:209:15:520
398950370irq/29-eth0_g0_22885-21kworker/0:209:07:090
398950370irq/29-eth0_g0_13493-21proc_pri07:50:240
568199361cyclictest5763-21cpu07:05:151
568199361cyclictest25101-21diskmemload10:45:241
568199361cyclictest25004-21unixbench_multi09:00:281
568199361cyclictest25004-21unixbench_multi09:00:281
568199361cyclictest23365-21grep08:50:241
568199361cyclictest23365-21grep08:50:241
568199361cyclictest18341-21ps08:20:241
568199361cyclictest15241-21cat08:00:251
399050360irq/30-eth0_g0_470-21kworker/1:111:00:281
398950360irq/29-eth0_g0_18415-21wc08:20:250
398950360irq/29-eth0_g0_14588-21latency_hist08:00:030
568199351cyclictest12102-21grep07:40:261
568199351cyclictest12102-21grep07:40:261
568199351cyclictest10419-21grep07:30:241
568199351cyclictest10419-21grep07:30:241
398950350irq/29-eth0_g0_9786-21sort07:30:030
398950350irq/29-eth0_g0_7579-21if_eth007:15:170
398950350irq/29-eth0_g0_6826-21cat07:10:190
398950350irq/29-eth0_g0_6400-21grep07:05:270
398950350irq/29-eth0_g0_17727-21grep08:15:260
398950350irq/29-eth0_g0_121ksoftirqd/112:17:281
398950350irq/29-eth0_g0_11286-21head07:35:250
398950350irq/29-eth0_g0_11286-21head07:35:250
398950350irq/29-eth0_g0_10472-21unixbench_singl07:30:240
398950350irq/29-eth0_g0_10472-21unixbench_singl07:30:240
398950350irq/29-eth0_g0_0-21swapper/010:10:160
568199341cyclictest24176-21grep08:55:271
568199341cyclictest24176-21grep08:55:271
568199341cyclictest17377-21cat08:15:201
568199341cyclictest0-21swapper/107:35:251
568199341cyclictest0-21swapper/107:35:251
399050340irq/30-eth0_g0_20982-21unixbench_singl08:35:291
399050340irq/30-eth0_g0_19736-21iostat08:30:191
398950340irq/29-eth0_g0_568199cyclictest07:25:031
398950340irq/29-eth0_g0_22198-21cat08:45:190
398950340irq/29-eth0_g0_22198-21cat08:45:190
398950340irq/29-eth0_g0_20278-21ls08:35:030
121340ksoftirqd/1398950irq/29-eth0_g0_07:45:261
121340ksoftirqd/1398950irq/29-eth0_g0_07:45:261
568199331cyclictest21390-21latency08:40:181
568199331cyclictest21390-21latency08:40:181
568199331cyclictest13730-21unixbench_singl07:50:271
568199331cyclictest0-21swapper/107:10:201
399050330irq/30-eth0_g0_19326-21unixbench_multi08:25:231
399050330irq/30-eth0_g0_16110-21grep08:05:261
398950330irq/29-eth0_g0_24662-21missed_timers09:00:220
398950330irq/29-eth0_g0_24662-21missed_timers09:00:220
398950330irq/29-eth0_g0_23318-21sort08:50:240
398950330irq/29-eth0_g0_23318-21sort08:50:240
398950330irq/29-eth0_g0_20451-21df_abs08:35:190
398950330irq/29-eth0_g0_19017-21missed_timers08:25:170
398950330irq/29-eth0_g0_16945-21head08:10:281
398950330irq/29-eth0_g0_16840-21grep08:10:280
398950330irq/29-eth0_g0_15922-21proc_pri08:05:230
399050320irq/30-eth0_g0_23926-21ntp_kernel_err08:55:210
399050320irq/30-eth0_g0_23926-21ntp_kernel_err08:55:210
398950320irq/29-eth0_g0_8693-21ps07:20:260
398950320irq/29-eth0_g0_21747-21grep08:40:240
398950320irq/29-eth0_g0_21747-21grep08:40:240
398950320irq/29-eth0_g0_0-21swapper/008:00:250
398950320irq/29-eth0_g0_0-21swapper/007:45:180
398950320irq/29-eth0_g0_0-21swapper/007:45:180
399050290irq/30-eth0_g0_7639-21ls07:15:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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