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2026-05-26 - 02:48

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 Tue May 26, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
121970ksoftirqd/1121750irq/30-eth0_g0_22:15:051
121970ksoftirqd/1121750irq/30-eth0_g0_22:15:051
121850ksoftirqd/1121650irq/29-eth0_g0_20:44:530
121830ksoftirqd/1121650irq/29-eth0_g0_22:37:250
125062780sleep1121750irq/30-eth0_g0_20:42:531
288922620sleep1121750irq/30-eth0_g0_00:01:001
121600ksoftirqd/1264772sleep019:26:430
121590ksoftirqd/150202sleep022:25:070
121540ksoftirqd/1121750irq/30-eth0_g0_22:53:271
121540ksoftirqd/1121750irq/30-eth0_g0_22:53:271
6702520sleep1121650irq/29-eth0_g0_22:05:471
121510ksoftirqd/1121750irq/30-eth0_g0_23:39:191
246122500sleep1121650irq/29-eth0_g0_21:31:251
121490ksoftirqd/1121750irq/30-eth0_g0_21:42:241
121490ksoftirqd/1121650irq/29-eth0_g0_00:16:490
121650480irq/29-eth0_g0_31ksoftirqd/020:25:170
121650480irq/29-eth0_g0_31ksoftirqd/020:25:170
121460ksoftirqd/1121750irq/30-eth0_g0_21:11:241
121750450irq/30-eth0_g0_1219-21kworker/1:223:33:211
121650450irq/29-eth0_g0_31ksoftirqd/021:35:150
121450ksoftirqd/1121750irq/30-eth0_g0_23:56:501
121450ksoftirqd/1121750irq/30-eth0_g0_23:49:141
121450ksoftirqd/1121750irq/30-eth0_g0_23:49:141
121650440irq/29-eth0_g0_192432sleep023:22:380
121440ksoftirqd/1121750irq/30-eth0_g0_22:43:241
121440ksoftirqd/1121750irq/30-eth0_g0_00:17:561
247022430chrt121650irq/29-eth0_g0_21:32:270
121430ksoftirqd/1121650irq/29-eth0_g0_19:35:071
121750420irq/30-eth0_g0_1219-21kworker/1:222:48:221
121750420irq/30-eth0_g0_1219-21kworker/1:222:28:041
121750420irq/30-eth0_g0_1219-21kworker/1:221:52:151
121750420irq/30-eth0_g0_1219-21kworker/1:221:35:121
121750420irq/30-eth0_g0_1219-21kworker/1:221:17:341
121750420irq/30-eth0_g0_1219-21kworker/1:221:17:341
121750420irq/30-eth0_g0_1219-21kworker/1:200:28:301
121750420irq/30-eth0_g0_1219-21kworker/1:200:05:091
121750420irq/30-eth0_g0_1219-21kworker/1:200:05:091
121750420irq/30-eth0_g0_121ksoftirqd/100:30:361
121650420irq/29-eth0_g0_1964-21runrttasks19:09:270
121650420irq/29-eth0_g0_121ksoftirqd/123:54:510
2186199411cyclictest15852-21grep20:55:141
2186199411cyclictest15852-21grep20:55:141
121750410irq/30-eth0_g0_121ksoftirqd/122:31:431
121650410irq/29-eth0_g0_1964-21runrttasks22:09:180
121650410irq/29-eth0_g0_121ksoftirqd/121:57:111
2186199401cyclictest8173-21taskset20:25:101
2186199401cyclictest8173-21taskset20:25:101
2186199401cyclictest19836-21sshd23:25:081
121750400irq/30-eth0_g0_13-21kworker/0:121:10:060
121650400irq/29-eth0_g0_13-21kworker/0:123:34:550
121650400irq/29-eth0_g0_13-21kworker/0:123:26:360
121650400irq/29-eth0_g0_13-21kworker/0:121:51:230
121650400irq/29-eth0_g0_13-21kworker/0:121:44:090
121650400irq/29-eth0_g0_13-21kworker/0:100:01:530
121400ksoftirqd/1121750irq/30-eth0_g0_23:15:251
121400ksoftirqd/1121650irq/29-eth0_g0_19:10:131
94852390sleep0121650irq/29-eth0_g0_20:30:100
2186199392cyclictest2109-21lldpd22:10:041
2186199391cyclictest314962sleep122:00:091
121750390irq/30-eth0_g0_13778-21ntp_kernel_err23:00:091
121750390irq/30-eth0_g0_1219-21kworker/1:223:52:091
121750390irq/30-eth0_g0_0-21swapper/122:22:291
121650390irq/29-eth0_g0_31ksoftirqd/021:55:070
121650390irq/29-eth0_g0_21551-21runrttasks19:06:251
121650390irq/29-eth0_g0_1964-21runrttasks23:34:300
121650390irq/29-eth0_g0_13-21kworker/0:123:59:160
121650390irq/29-eth0_g0_13-21kworker/0:123:47:150
121650390irq/29-eth0_g0_13-21kworker/0:123:47:150
121650390irq/29-eth0_g0_13-21kworker/0:123:03:410
121650390irq/29-eth0_g0_13-21kworker/0:100:30:150
121650390irq/29-eth0_g0_13-21kworker/0:100:21:240
121650390irq/29-eth0_g0_13-21kworker/0:100:08:350
121650390irq/29-eth0_g0_13-21kworker/0:100:08:350
121650390irq/29-eth0_g0_0-21swapper/022:15:150
121650390irq/29-eth0_g0_0-21swapper/022:15:150
121390ksoftirqd/1121750irq/30-eth0_g0_23:11:030
121390ksoftirqd/1121750irq/30-eth0_g0_22:20:570
121390ksoftirqd/1121650irq/29-eth0_g0_21:48:231
2186199381cyclictest261442sleep119:25:141
2186199381cyclictest18789-21diskmemload00:35:161
121750380irq/30-eth0_g0_13-21kworker/0:123:05:120
121750380irq/30-eth0_g0_1219-21kworker/1:221:27:371
121750380irq/30-eth0_g0_121ksoftirqd/123:09:321
121750380irq/30-eth0_g0_121ksoftirqd/122:38:371
121750380irq/30-eth0_g0_0-21swapper/123:23:431
121650380irq/29-eth0_g0_9088-21ls22:40:160
121650380irq/29-eth0_g0_31ksoftirqd/022:10:040
121650380irq/29-eth0_g0_1964-21runrttasks23:43:410
121650380irq/29-eth0_g0_1964-21runrttasks22:57:110
121650380irq/29-eth0_g0_1964-21runrttasks21:46:040
121650380irq/29-eth0_g0_1964-21runrttasks00:12:510
121650380irq/29-eth0_g0_13-21kworker/0:122:31:070
121650380irq/29-eth0_g0_13-21kworker/0:122:03:290
121650380irq/29-eth0_g0_13-21kworker/0:121:25:370
121650380irq/29-eth0_g0_13-21kworker/0:121:23:590
121650380irq/29-eth0_g0_13-21kworker/0:100:37:310
121650380irq/29-eth0_g0_0-21swapper/021:15:140
121650380irq/29-eth0_g0_0-21swapper/021:15:140
121380ksoftirqd/1121650irq/29-eth0_g0_19:45:121
2186199372cyclictest32385-21grep19:50:151
2186199372cyclictest1003-21wc00:20:121
2186199371cyclictest958-21proc_pri19:55:111
2186199371cyclictest7305-21tail20:20:151
2186199371cyclictest4896-21grep20:10:151
2186199371cyclictest16970-21sendmail_mailqu21:00:151
2186199371cyclictest16970-21sendmail_mailqu21:00:151
121750370irq/30-eth0_g0_1219-21kworker/1:223:41:441
121750370irq/30-eth0_g0_1219-21kworker/1:223:10:521
121750370irq/30-eth0_g0_1219-21kworker/1:221:24:291
121750370irq/30-eth0_g0_0-21swapper/100:11:341
121650370irq/29-eth0_g0_7090-21awk20:20:120
121650370irq/29-eth0_g0_31ksoftirqd/022:46:170
121650370irq/29-eth0_g0_23712-21wc19:15:140
121650370irq/29-eth0_g0_1964-21runrttasks23:16:010
121650370irq/29-eth0_g0_1964-21runrttasks20:59:180
121650370irq/29-eth0_g0_1964-21runrttasks20:59:180
121650370irq/29-eth0_g0_1964-21runrttasks20:19:240
121650370irq/29-eth0_g0_13-21kworker/0:122:51:200
121650370irq/29-eth0_g0_13-21kworker/0:122:51:200
121650370irq/29-eth0_g0_13-21kworker/0:100:29:040
2186199362cyclictest30419-21munin-run19:44:541
2186199361cyclictest27211-21netstat19:30:091
2186199361cyclictest2318-21sendmail_mailtr20:00:141
2186199361cyclictest12911-21awk22:55:151
121650360irq/29-eth0_g0_3657-21unixbench_singl20:05:150
121650360irq/29-eth0_g0_31942-21if_eth019:50:060
121650360irq/29-eth0_g0_1964-21runrttasks20:48:010
121650360irq/29-eth0_g0_1964-21runrttasks20:03:400
121650360irq/29-eth0_g0_1964-21runrttasks19:45:250
121650360irq/29-eth0_g0_1964-21runrttasks19:42:410
121650360irq/29-eth0_g0_1964-21runrttasks19:30:170
21861993518cyclictest3151-21/usr/sbin/munin20:05:061
2186199351cyclictest23308-21sed19:15:061
2186199351cyclictest13291-21awk20:45:141
2186199351cyclictest10614-21load20:35:081
2186199351cyclictest10269-21seq20:34:531
121650350irq/29-eth0_g0_22486-21find19:10:120
121650350irq/29-eth0_g0_2186099cyclictest19:55:060
121650350irq/29-eth0_g0_1964-21runrttasks21:05:350
121650350irq/29-eth0_g0_1964-21runrttasks20:54:450
121650350irq/29-eth0_g0_1964-21runrttasks20:38:250
2186199341cyclictest25082-21head19:20:141
2186199341cyclictest142842sleep120:50:091
121650340irq/29-eth0_g0_4859-21unixbench_multi20:10:140
121650340irq/29-eth0_g0_24927-21sendmail_mailqu19:20:120
121650340irq/29-eth0_g0_13-21kworker/0:121:00:040
121650340irq/29-eth0_g0_13-21kworker/0:121:00:040
121650340irq/29-eth0_g0_0-21swapper/019:35:040
2186199331cyclictest0-21swapper/120:15:141
121650310irq/29-eth0_g0_18558-21runrttasks21:07:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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