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2025-09-19 - 04:48

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 Fri Sep 19, 2025 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121450ksoftirqd/1399050irq/30-eth0_g0_21:13:431
399050440irq/30-eth0_g0_31ksoftirqd/021:55:230
399050440irq/30-eth0_g0_31ksoftirqd/021:55:230
398950440irq/29-eth0_g0_15016-21head19:00:210
121440ksoftirqd/1398950irq/29-eth0_g0_23:35:231
121440ksoftirqd/1398950irq/29-eth0_g0_20:05:221
399050430irq/30-eth0_g0_470-21kworker/1:122:44:561
121430ksoftirqd/1399050irq/30-eth0_g0_23:13:591
399050420irq/30-eth0_g0_470-21kworker/1:121:50:421
399050420irq/30-eth0_g0_0-21swapper/000:20:170
398950420irq/29-eth0_g0_22885-21kworker/0:200:34:130
398950410irq/29-eth0_g0_22885-21kworker/0:223:32:490
398950410irq/29-eth0_g0_121ksoftirqd/122:00:011
398950410irq/29-eth0_g0_121ksoftirqd/122:00:011
1508799412cyclictest15820-21head19:05:221
121410ksoftirqd/1398950irq/29-eth0_g0_23:40:151
121410ksoftirqd/1398950irq/29-eth0_g0_21:38:000
399050400irq/30-eth0_g0_470-21kworker/1:123:21:391
399050400irq/30-eth0_g0_470-21kworker/1:122:52:441
399050400irq/30-eth0_g0_470-21kworker/1:122:35:001
399050400irq/30-eth0_g0_121ksoftirqd/123:25:221
399050400irq/30-eth0_g0_121ksoftirqd/122:36:061
399050400irq/30-eth0_g0_121ksoftirqd/121:39:231
399050400irq/30-eth0_g0_121ksoftirqd/100:01:351
398950400irq/29-eth0_g0_22885-21kworker/0:223:25:250
398950400irq/29-eth0_g0_22885-21kworker/0:223:18:340
398950400irq/29-eth0_g0_22885-21kworker/0:222:56:330
398950400irq/29-eth0_g0_22885-21kworker/0:222:53:070
398950400irq/29-eth0_g0_22885-21kworker/0:222:30:300
398950400irq/29-eth0_g0_22885-21kworker/0:221:44:550
398950400irq/29-eth0_g0_22885-21kworker/0:221:06:290
398950400irq/29-eth0_g0_22885-21kworker/0:200:08:440
398950400irq/29-eth0_g0_121ksoftirqd/121:46:430
1508799401cyclictest19495-21latency22:55:181
1508799401cyclictest14266-21grep22:20:221
121400ksoftirqd/1399050irq/30-eth0_g0_23:14:220
121400ksoftirqd/1398950irq/29-eth0_g0_20:35:241
399050390irq/30-eth0_g0_470-21kworker/1:100:20:271
399050390irq/30-eth0_g0_121ksoftirqd/123:17:171
399050390irq/30-eth0_g0_121ksoftirqd/122:11:231
399050390irq/30-eth0_g0_121ksoftirqd/122:00:061
399050390irq/30-eth0_g0_121ksoftirqd/100:29:491
398950390irq/29-eth0_g0_31ksoftirqd/022:47:540
398950390irq/29-eth0_g0_28360-21if_eth023:50:160
398950390irq/29-eth0_g0_26183-21proc_pri23:35:210
398950390irq/29-eth0_g0_22885-21kworker/0:223:55:380
398950390irq/29-eth0_g0_22885-21kworker/0:223:45:480
398950390irq/29-eth0_g0_22885-21kworker/0:222:25:520
398950390irq/29-eth0_g0_22885-21kworker/0:222:21:370
398950390irq/29-eth0_g0_22885-21kworker/0:221:18:470
398950390irq/29-eth0_g0_22885-21kworker/0:200:28:160
398950390irq/29-eth0_g0_121ksoftirqd/121:12:220
1508799391cyclictest31209-21grep20:40:211
1508799391cyclictest20645-21grep19:35:241
121390ksoftirqd/1398950irq/29-eth0_g0_21:29:190
399050380irq/30-eth0_g0_470-21kworker/1:121:28:371
399050380irq/30-eth0_g0_121ksoftirqd/123:30:321
399050380irq/30-eth0_g0_121ksoftirqd/121:16:161
399050380irq/30-eth0_g0_0-21swapper/123:59:301
399050380irq/30-eth0_g0_0-21swapper/121:23:121
399050380irq/30-eth0_g0_0-21swapper/100:34:401
398950380irq/29-eth0_g0_31ksoftirqd/020:55:110
398950380irq/29-eth0_g0_31ksoftirqd/020:55:110
398950380irq/29-eth0_g0_22885-21kworker/0:223:09:490
398950380irq/29-eth0_g0_22885-21kworker/0:223:01:280
398950380irq/29-eth0_g0_22885-21kworker/0:223:01:280
398950380irq/29-eth0_g0_22885-21kworker/0:222:10:570
398950380irq/29-eth0_g0_22885-21kworker/0:222:02:400
398950380irq/29-eth0_g0_22885-21kworker/0:221:32:540
398950380irq/29-eth0_g0_22885-21kworker/0:221:20:460
398950380irq/29-eth0_g0_22885-21kworker/0:200:00:450
398950380irq/29-eth0_g0_11547-21ntp_states22:05:200
1508799381cyclictest21527-21grep23:05:261
121380ksoftirqd/1399050irq/30-eth0_g0_00:19:200
399050370irq/30-eth0_g0_470-21kworker/1:121:41:171
399050370irq/30-eth0_g0_121ksoftirqd/122:25:561
399050370irq/30-eth0_g0_121ksoftirqd/122:07:061
399050370irq/30-eth0_g0_121ksoftirqd/121:46:061
398950370irq/29-eth0_g0_25537-21grep20:05:230
398950370irq/29-eth0_g0_23889-21unixbench_multi19:55:230
398950370irq/29-eth0_g0_22885-21kworker/0:223:40:540
398950370irq/29-eth0_g0_22885-21kworker/0:223:20:050
398950370irq/29-eth0_g0_22885-21kworker/0:222:40:210
398950370irq/29-eth0_g0_22885-21kworker/0:222:15:380
398950370irq/29-eth0_g0_22885-21kworker/0:221:50:220
398950370irq/29-eth0_g0_22885-21kworker/0:200:11:020
398950370irq/29-eth0_g0_16661-21unixbench_singl19:10:240
398950370irq/29-eth0_g0_16097-21df_abs22:35:130
398950370irq/29-eth0_g0_121ksoftirqd/100:11:011
1508799372cyclictest21139-21cat19:40:191
1508799371cyclictest29594-21unixbench_singl20:30:261
1508799371cyclictest24733-21grep20:00:241
1508799371cyclictest18315-21unixbench_singl22:45:241
399050360irq/30-eth0_g0_470-21kworker/1:122:17:441
399050360irq/30-eth0_g0_470-21kworker/1:121:32:361
399050360irq/30-eth0_g0_470-21kworker/1:100:19:561
399050360irq/30-eth0_g0_32007-21unixbench_singl20:45:241
398950360irq/29-eth0_g0_31145-21grep20:40:210
398950360irq/29-eth0_g0_30361-21unixbench_multi20:35:240
398950360irq/29-eth0_g0_21350-21find19:40:240
398950360irq/29-eth0_g0_15163-21/usr/sbin/munin19:05:110
1508799361cyclictest32508-21wc20:55:101
1508799361cyclictest32508-21wc20:55:101
1508799361cyclictest28317-21/usr/sbin/munin20:25:141
1508799361cyclictest28088-21sort23:49:591
1508799361cyclictest27843-21awk20:20:211
1508799361cyclictest27843-21awk20:20:211
1508799361cyclictest26134-21proc_pri20:10:181
1508799361cyclictest16654-21unixbench_singl19:10:241
1508799361cyclictest1352-21diskmemload00:05:161
399050350irq/30-eth0_g0_19723-21zcat19:30:221
398950350irq/29-eth0_g0_32229-21ls20:55:000
398950350irq/29-eth0_g0_32229-21ls20:55:000
398950350irq/29-eth0_g0_29443-21sendmail_mailqu20:30:250
398950350irq/29-eth0_g0_28177-21sed20:25:130
398950350irq/29-eth0_g0_20398-21ntpq19:35:200
398950350irq/29-eth0_g0_19772-21cat19:30:230
398950350irq/29-eth0_g0_121ksoftirqd/123:03:061
398950350irq/29-eth0_g0_121ksoftirqd/123:03:061
1508799352cyclictest23928-21grep19:55:231
15087993519cyclictest2234-21latency_hist21:10:001
1508799351cyclictest27034-21awk20:15:231
399050340irq/30-eth0_g0_28453-21missed_timers23:50:181
399050340irq/30-eth0_g0_14428-21sed19:00:121
398950340irq/29-eth0_g0_27431-21grep20:20:130
398950340irq/29-eth0_g0_27431-21grep20:20:130
398950340irq/29-eth0_g0_27121-21sed20:15:240
398950340irq/29-eth0_g0_22705-21latency19:50:170
1508799341cyclictest17830-21cat19:20:161
1508799341cyclictest17830-21cat19:20:161
1508799341cyclictest17427-21unixbench_multi19:15:251
399050330irq/30-eth0_g0_18941-21mailstats19:25:220
398950330irq/29-eth0_g0_31991-21unixbench_multi20:45:230
398950330irq/29-eth0_g0_24582-21/usr/sbin/munin20:00:220
398950330irq/29-eth0_g0_21881-21sort19:45:140
398950330irq/29-eth0_g0_21640-21egrep19:45:101
398950330irq/29-eth0_g0_16983-21if_eth019:15:170
398950330irq/29-eth0_g0_1285-21unixbench_singl21:00:230
398950330irq/29-eth0_g0_0-21swapper/020:10:110
399050320irq/30-eth0_g0_18969-21sort19:25:221
398950320irq/29-eth0_g0_0-21swapper/019:20:200
398950320irq/29-eth0_g0_0-21swapper/019:20:200
1508799321cyclictest0-21swapper/121:00:161
1508799321cyclictest0-21swapper/119:50:141
399050260irq/30-eth0_g0_32176-21grep20:55:001
399050260irq/30-eth0_g0_32176-21grep20:55:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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