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2025-07-01 - 00:42

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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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 376 highest latencies:
System rack3slot5s.osadl.org (updated Mon Jun 30, 2025 12:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2284721650chrt2288650irq/29-eth0_g0_10:00:160
3258021590chrt2288650irq/29-eth0_g0_10:39:371
2318221560sleep02288750irq/30-eth0_g0_10:03:150
1557221000sleep02288650irq/29-eth0_g0_11:43:280
121940ksoftirqd/1310342sleep008:23:090
121640ksoftirqd/12288750irq/30-eth0_g0_11:44:091
121600ksoftirqd/12288750irq/30-eth0_g0_07:50:171
216032560sleep02288650irq/29-eth0_g0_09:55:010
216032560sleep02288650irq/29-eth0_g0_09:55:010
172652560sleep02288750irq/30-eth0_g0_11:49:040
253802550sleep02288650irq/29-eth0_g0_10:11:140
253802550sleep02288650irq/29-eth0_g0_10:11:140
217382530sleep12288750irq/30-eth0_g0_09:56:371
217382530sleep12288750irq/30-eth0_g0_09:56:371
121530ksoftirqd/12288750irq/30-eth0_g0_09:48:081
121500ksoftirqd/12288650irq/29-eth0_g0_09:13:191
327122480sleep02288650irq/29-eth0_g0_10:41:100
2288750480irq/30-eth0_g0_14038-21/usr/sbin/munin11:38:330
121470ksoftirqd/12288650irq/29-eth0_g0_11:36:061
2288750460irq/30-eth0_g0_31ksoftirqd/011:08:080
2288750460irq/30-eth0_g0_31ksoftirqd/011:08:080
121460ksoftirqd/12288750irq/30-eth0_g0_12:03:371
121460ksoftirqd/12288650irq/29-eth0_g0_09:22:431
121460ksoftirqd/12288650irq/29-eth0_g0_09:22:431
121460ksoftirqd/12288650irq/29-eth0_g0_09:11:121
2288750450irq/30-eth0_g0_31ksoftirqd/010:53:230
2288650450irq/29-eth0_g0_470-21kworker/1:110:37:261
223212450sleep02288650irq/29-eth0_g0_12:10:520
121450ksoftirqd/12288650irq/29-eth0_g0_12:02:291
121450ksoftirqd/12288650irq/29-eth0_g0_07:33:241
2288650440irq/29-eth0_g0_470-21kworker/1:110:51:391
121440ksoftirqd/12288650irq/29-eth0_g0_12:13:251
2288750430irq/30-eth0_g0_31ksoftirqd/011:58:250
2288750430irq/30-eth0_g0_31ksoftirqd/011:28:390
2288650430irq/29-eth0_g0_121ksoftirqd/109:24:061
121430ksoftirqd/12288750irq/30-eth0_g0_10:59:441
121430ksoftirqd/12288750irq/30-eth0_g0_10:59:441
121430ksoftirqd/12288650irq/29-eth0_g0_12:15:010
2288750420irq/30-eth0_g0_22885-21kworker/0:212:07:120
2288650420irq/29-eth0_g0_9633-21diskmemload10:08:451
2288650420irq/29-eth0_g0_9633-21diskmemload10:08:451
2288650420irq/29-eth0_g0_470-21kworker/1:110:06:441
2288650420irq/29-eth0_g0_121ksoftirqd/112:33:081
121420ksoftirqd/12288650irq/29-eth0_g0_11:30:471
121420ksoftirqd/12288650irq/29-eth0_g0_09:33:291
121420ksoftirqd/12288650irq/29-eth0_g0_09:28:381
2288750410irq/30-eth0_g0_2447-21grep10:48:340
2288750410irq/30-eth0_g0_22885-21kworker/0:212:23:220
2288750410irq/30-eth0_g0_22885-21kworker/0:212:18:100
2288750410irq/30-eth0_g0_121ksoftirqd/111:16:191
2288750410irq/30-eth0_g0_121ksoftirqd/111:16:191
2288650410irq/29-eth0_g0_121ksoftirqd/109:51:231
121410ksoftirqd/12288750irq/30-eth0_g0_11:48:351
93252400sleep02288750irq/30-eth0_g0_11:18:240
93252400sleep02288750irq/30-eth0_g0_11:18:240
2288750400irq/30-eth0_g0_301182sleep010:29:260
2288750400irq/30-eth0_g0_27911-21chrt08:08:260
2288750400irq/30-eth0_g0_25878-21irqstats10:13:270
2288750400irq/30-eth0_g0_22885-21kworker/0:209:20:300
2288750400irq/30-eth0_g0_22885-21kworker/0:209:20:300
2288750400irq/30-eth0_g0_16956-21sshd09:37:520
2288750400irq/30-eth0_g0_13399-21sed07:08:290
2288750400irq/30-eth0_g0_121ksoftirqd/107:38:311
2288750400irq/30-eth0_g0_1055-21zcat10:43:310
2288650400irq/29-eth0_g0_470-21kworker/1:112:33:291
2288650400irq/29-eth0_g0_470-21kworker/1:111:54:061
2288650400irq/29-eth0_g0_470-21kworker/1:110:28:261
2288650400irq/29-eth0_g0_121ksoftirqd/110:47:311
2288750390irq/30-eth0_g0_3520-21latency_hist08:43:090
2288750390irq/30-eth0_g0_31729-21ls08:23:310
2288750390irq/30-eth0_g0_31ksoftirqd/010:22:410
2288750390irq/30-eth0_g0_31ksoftirqd/010:22:410
2288750390irq/30-eth0_g0_31ksoftirqd/009:38:530
2288750390irq/30-eth0_g0_22885-21kworker/0:212:29:100
2288750390irq/30-eth0_g0_22885-21kworker/0:211:36:110
2288750390irq/30-eth0_g0_22885-21kworker/0:211:25:070
2288750390irq/30-eth0_g0_22885-21kworker/0:210:33:190
2288750390irq/30-eth0_g0_22885-21kworker/0:210:25:530
2288750390irq/30-eth0_g0_22885-21kworker/0:209:43:110
2288750390irq/30-eth0_g0_22885-21kworker/0:209:26:230
2288750390irq/30-eth0_g0_16818-21chrt07:23:250
2288750390irq/30-eth0_g0_121ksoftirqd/111:12:200
2288750390irq/30-eth0_g0_121ksoftirqd/109:12:040
2288650390irq/29-eth0_g0_470-21kworker/1:112:10:271
2288650390irq/29-eth0_g0_470-21kworker/1:111:41:031
2288650390irq/29-eth0_g0_470-21kworker/1:110:26:311
2288650390irq/29-eth0_g0_1266999cyclictest11:23:301
2288650390irq/29-eth0_g0_121ksoftirqd/112:19:341
121390ksoftirqd/12288750irq/30-eth0_g0_11:21:461
121390ksoftirqd/12288750irq/30-eth0_g0_11:21:461
121390ksoftirqd/12288750irq/30-eth0_g0_09:49:420
2288750380irq/30-eth0_g0_9159-21sed09:03:340
2288750380irq/30-eth0_g0_9159-21sed09:03:340
2288750380irq/30-eth0_g0_7812-21find08:58:320
2288750380irq/30-eth0_g0_31ksoftirqd/009:28:590
2288750380irq/30-eth0_g0_23116-21sendmail_mailst07:48:330
2288750380irq/30-eth0_g0_22885-21kworker/0:211:14:310
2288750380irq/30-eth0_g0_22885-21kworker/0:211:14:310
2288750380irq/30-eth0_g0_22885-21kworker/0:210:59:570
2288750380irq/30-eth0_g0_22885-21kworker/0:210:59:570
2288750380irq/30-eth0_g0_21863-21zcat07:43:300
2288750380irq/30-eth0_g0_1472-21taskset08:33:260
2288650380irq/29-eth0_g0_470-21kworker/1:110:00:571
2288650380irq/29-eth0_g0_0-21swapper/111:04:061
2288650380irq/29-eth0_g0_0-21swapper/111:04:061
2288750370irq/30-eth0_g0_31ksoftirqd/011:54:560
2288750370irq/30-eth0_g0_22885-21kworker/0:212:35:430
2288750370irq/30-eth0_g0_22885-21kworker/0:209:16:560
2288750370irq/30-eth0_g0_0-21swapper/007:13:300
2288750370irq/30-eth0_g0_0-21swapper/007:03:290
2288650370irq/29-eth0_g0_2021-21runrttasks08:35:191
2288650370irq/29-eth0_g0_2021-21runrttasks07:07:421
2288650370irq/29-eth0_g0_121ksoftirqd/109:39:161
2288650370irq/29-eth0_g0_0-21swapper/112:24:531
121370ksoftirqd/12288750irq/30-eth0_g0_08:53:450
2288750360irq/30-eth0_g0_17732-21df_abs07:28:240
2288650360irq/29-eth0_g0_470-21kworker/1:110:58:061
2288650360irq/29-eth0_g0_26236-21/usr/sbin/munin08:03:221
2288650360irq/29-eth0_g0_2021-21runrttasks08:10:481
2288650360irq/29-eth0_g0_121ksoftirqd/111:08:591
2288650350irq/29-eth0_g0_8892-21ntpdc09:03:301
2288650350irq/29-eth0_g0_8892-21ntpdc09:03:301
2288650350irq/29-eth0_g0_7931-21grep08:58:331
2288650350irq/29-eth0_g0_27537-21sed10:18:341
2288650350irq/29-eth0_g0_27537-21sed10:18:341
2288650350irq/29-eth0_g0_24028-21irqstats07:53:271
2288650350irq/29-eth0_g0_2021-21runrttasks08:27:501
2288650350irq/29-eth0_g0_15513-21cat07:18:241
2288650350irq/29-eth0_g0_14254-21latency07:13:251
2288650350irq/29-eth0_g0_0-21swapper/110:13:341
121350ksoftirqd/12288650irq/29-eth0_g0_08:48:251
2288750340irq/30-eth0_g0_15647-21taskset07:18:260
2288750340irq/30-eth0_g0_0-21swapper/008:43:340
2288750340irq/30-eth0_g0_0-21swapper/007:58:230
2288650340irq/29-eth0_g0_6533-21processes08:53:331
2288650340irq/29-eth0_g0_21707-21netstat07:43:271
2288650340irq/29-eth0_g0_17733-21grep07:28:241
2288650340irq/29-eth0_g0_16972-21sendmail_mailqu07:23:291
2288650340irq/29-eth0_g0_13152-21chrt07:08:261
2288750330irq/30-eth0_g0_20110-21/usr/sbin/munin07:38:300
2288650330irq/29-eth0_g0_28889-21ethtool08:13:241
2288650330irq/29-eth0_g0_0-21swapper/108:38:291
2288750320irq/30-eth0_g0_589-21sed08:28:300
2288750320irq/30-eth0_g0_29313-21unixbench_multi08:13:310
2288750320irq/30-eth0_g0_26536-21missed_timers08:03:260
2288750320irq/30-eth0_g0_19419-21sendmail_mailqu07:33:280
2288650320irq/29-eth0_g0_32504-21df_inode08:28:211
2288650320irq/29-eth0_g0_30590-21unixbench_singl08:18:331
2288650320irq/29-eth0_g0_24576-21runrttasks07:54:100
2288650320irq/29-eth0_g0_1266999cyclictest08:43:301
2288750310irq/30-eth0_g0_5510-21unixbench_singl08:48:330
2288650310irq/29-eth0_g0_1266999cyclictest07:58:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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