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2026-06-11 - 16:25

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #6

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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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.
Unexpectedly long latencies may be caused by SMIs
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 rack3slot6s.osadl.org (updated Thu Jun 11, 2026 12:43:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2211621440,5sleep2176099cyclictest12:10:132
1659521370,2sleep1175999cyclictest10:53:041
1512211997,17sleep00-21swapper/007:07:120
1662211794,18sleep10-21swapper/107:09:091
1470211296,11sleep30-21swapper/307:06:393
529621050,0sleep30-21swapper/309:30:123
159129979,15sleep20-21swapper/207:08:142
287422840,1sleep20-21swapper/208:15:122
171412790,0sleep10-21swapper/112:05:031
260552780,2sleep0175899cyclictest10:28:140
110662720,0sleep00-21swapper/008:50:150
325012290,1sleep30-21swapper/309:25:123
173042220,0sleep10-21swapper/111:30:001
1760992118,2cyclictest31303-21kworker/u8:010:06:042
1760992118,2cyclictest29883-21kworker/u8:110:34:012
1760992118,2cyclictest23684-21kworker/u8:209:56:032
176099210,4cyclictest0-21swapper/210:44:012
176199201,17cyclictest0-21swapper/311:15:103
176199200,2cyclictest0-21swapper/310:00:123
1760992017,2cyclictest9976-21kworker/u8:208:04:042
1760992017,2cyclictest5886-21kworker/u8:009:32:032
1760992017,2cyclictest5886-21kworker/u8:009:26:042
1760992017,2cyclictest5886-21kworker/u8:009:10:012
1760992017,2cyclictest32706-21kworker/u8:012:17:042
1760992017,2cyclictest32706-21kworker/u8:011:47:052
1760992017,2cyclictest1905-21kworker/u8:209:41:042
1760992017,2cyclictest18968-21kworker/u8:010:36:062
176099201,2cyclictest0-21swapper/209:39:052
175899200,2cyclictest0-21swapper/007:35:110
176199190,2cyclictest0-21swapper/309:55:103
1760991916,2cyclictest5886-21kworker/u8:009:18:052
1760991916,2cyclictest4496-21kworker/u8:210:26:042
1760991916,2cyclictest4496-21kworker/u8:210:19:052
1760991916,2cyclictest31397-21kworker/u8:207:15:042
1760991916,2cyclictest31303-21kworker/u8:010:01:052
1760991916,2cyclictest31077-21kworker/u8:211:26:062
1760991916,2cyclictest29883-21kworker/u8:110:46:012
1760991916,2cyclictest28010-21kworker/u8:211:50:012
1760991916,2cyclictest16202-21kworker/u8:109:22:042
1760991916,2cyclictest16202-21kworker/u8:109:07:032
1760991916,2cyclictest15965-21kworker/u8:107:56:042
1760991916,2cyclictest1081-21kworker/u8:108:32:042
1760991915,3cyclictest5886-21kworker/u8:009:04:012
1758991916,2cyclictest4496-21kworker/u8:210:23:050
1758991916,2cyclictest4496-21kworker/u8:210:23:050
1758991916,2cyclictest3463-21kworker/u8:210:58:030
1758991916,2cyclictest29883-21kworker/u8:110:45:050
175899190,2cyclictest0-21swapper/010:38:010
176099182,2cyclictest0-21swapper/211:24:042
1760991815,2cyclictest9976-21kworker/u8:207:36:012
1760991815,2cyclictest9976-21kworker/u8:207:32:042
1760991815,2cyclictest7881-21kworker/u8:107:27:042
1760991815,2cyclictest3384-21kworker/u8:011:40:042
1760991815,2cyclictest32706-21kworker/u8:012:09:052
1760991815,2cyclictest30150-21kworker/u8:208:48:042
1760991815,2cyclictest29883-21kworker/u8:110:52:042
1760991815,2cyclictest24301-21kworker/u8:108:05:042
1760991815,2cyclictest23840-21kworker/u8:212:35:052
1760991815,2cyclictest23684-21kworker/u8:209:54:052
1760991815,2cyclictest22632-21kworker/u8:111:13:042
1760991815,2cyclictest22632-21kworker/u8:111:04:042
1760991815,2cyclictest22263-21kworker/u8:008:11:042
1760991815,2cyclictest16657-21kworker/u8:010:55:052
1760991815,2cyclictest11194-21kworker/u8:211:59:042
1760991815,2cyclictest1081-21kworker/u8:108:35:042
1760991714,2cyclictest9976-21kworker/u8:207:43:042
1760991714,2cyclictest5886-21kworker/u8:008:58:042
1760991714,2cyclictest31077-21kworker/u8:211:18:042
1760991714,2cyclictest30900-21kworker/u8:112:25:052
1760991714,2cyclictest17210-21kworker/u8:009:48:052
1760991714,2cyclictest16972-21kworker/u8:111:35:052
1760991714,2cyclictest1081-21kworker/u8:108:29:042
176099170,2cyclictest0-21swapper/212:32:012
1758991714,2cyclictest29883-21kworker/u8:110:44:020
176199161,12cyclictest0-21swapper/312:35:143
1760991613,2cyclictest9976-21kworker/u8:207:52:042
1760991613,2cyclictest30900-21kworker/u8:112:24:042
1760991613,2cyclictest22263-21kworker/u8:008:22:012
1760991611,3cyclictest0-21swapper/207:46:022
176099160,2cyclictest0-21swapper/211:34:032
176099160,2cyclictest0-21swapper/210:20:042
176099160,2cyclictest0-21swapper/210:20:032
176099160,2cyclictest0-21swapper/210:10:042
175999161,3cyclictest3909-21copy10:40:011
1758991613,2cyclictest8279-21kworker/u8:109:39:050
1758991613,2cyclictest5886-21kworker/u8:009:29:050
71752150,1sleep30-21swapper/310:42:403
176199152,8cyclictest18089-21ssh09:45:003
1761991511,2cyclictest0-21swapper/309:05:053
176199151,12cyclictest0-21swapper/308:55:163
176199150,13cyclictest0-21swapper/311:36:043
1760991512,2cyclictest30150-21kworker/u8:208:40:032
1760991512,2cyclictest16657-21kworker/u8:011:07:032
1760991512,2cyclictest10130-21kworker/u8:108:51:042
175999151,2cyclictest3413-21apt-get11:50:101
175999151,12cyclictest7832-21apt-get11:55:061
175999151,12cyclictest16274-21munin-run07:44:591
1759991510,3cyclictest0-21swapper/111:33:161
175999150,3cyclictest9583-21ssh12:31:021
175999150,2cyclictest0-21swapper/111:48:031
175999150,13cyclictest17067-21ssh10:18:291
175999150,13cyclictest0-21swapper/110:49:591
175899151,3cyclictest23915-21ntp_states09:50:180
1758991512,2cyclictest23840-21kworker/u8:212:12:040
97752140,3sleep09946-21timerwakeupswit11:56:010
176199142,7cyclictest0-21swapper/311:25:003
176199142,6cyclictest0-21swapper/309:50:003
176199142,6cyclictest0-21swapper/308:25:003
176199141,3cyclictest0-21swapper/310:25:283
1761991411,2cyclictest381ktimersoftd/308:35:153
176199140,2cyclictest0-21swapper/309:15:003
176199140,13cyclictest0-21swapper/312:05:133
176199140,12cyclictest10877-21modprobe07:30:153
176199140,12cyclictest0-21swapper/310:05:173
175999149,3cyclictest13823-21ssh12:00:231
175999141,12cyclictest17648-21ssh09:44:211
1759991411,2cyclictest0-21swapper/111:18:091
1759991411,2cyclictest0-21swapper/110:30:291
175999140,2cyclictest207150irq/24-eth109:11:391
175999140,2cyclictest0-21swapper/109:37:391
175999140,13cyclictest0-21swapper/109:47:191
175999140,12cyclictest5886-21kworker/u8:009:17:211
175999140,12cyclictest27620-21sh12:15:301
175999140,12cyclictest207150irq/24-eth109:23:201
175899141,2cyclictest0-21swapper/012:20:190
175899140,2cyclictest0-21swapper/009:31:000
175899140,12cyclictest0-21swapper/012:06:490
175899140,12cyclictest0-21swapper/011:12:490
175899140,12cyclictest0-21swapper/009:11:000
175899140,12cyclictest0-21swapper/007:42:250
176199139,2cyclictest0-21swapper/310:34:233
176199138,3cyclictest13465-21ssh10:50:113
176199132,9cyclictest381ktimersoftd/311:46:453
176199131,10cyclictest28991-21ssh12:17:053
176199131,10cyclictest18312-21diskmemload10:49:083
1761991310,2cyclictest0-21swapper/312:13:043
1761991310,2cyclictest0-21swapper/312:00:153
1761991310,2cyclictest0-21swapper/307:35:123
176199130,2cyclictest0-21swapper/311:25:173
176199130,11cyclictest0-21swapper/307:42:363
176099130,2cyclictest0-21swapper/212:02:012
176099130,2cyclictest0-21swapper/207:10:122
175999139,2cyclictest0-21swapper/110:05:291
1759991310,2cyclictest18312-21diskmemload12:22:051
1759991310,2cyclictest0-21swapper/112:37:441
1759991310,2cyclictest0-21swapper/111:05:491
1759991310,2cyclictest0-21swapper/110:00:101
175999130,2cyclictest5478-21ssh09:30:151
175999130,2cyclictest0-21swapper/112:28:531
175999130,2cyclictest0-21swapper/110:37:031
175999130,2cyclictest0-21swapper/110:28:391
175999130,12cyclictest0-21swapper/111:22:091
175999130,12cyclictest0-21swapper/110:20:291
175999130,12cyclictest0-21swapper/110:20:281
175999130,12cyclictest0-21swapper/109:55:011
175999130,12cyclictest0-21swapper/109:27:491
175999130,11cyclictest0-21swapper/107:30:491
1758991310,2cyclictest6918-21kworker/u8:012:32:060
1758991310,2cyclictest0-21swapper/011:20:170
1758991310,2cyclictest0-21swapper/011:15:490
1758991310,2cyclictest0-21swapper/010:18:380
1758991310,2cyclictest0-21swapper/009:56:000
175899130,2cyclictest0-21swapper/011:53:110
175899130,2cyclictest0-21swapper/011:35:120
175899130,12cyclictest0-21swapper/011:45:590
175899130,11cyclictest0-21swapper/012:00:200
175899130,11cyclictest0-21swapper/010:11:090
175899130,11cyclictest0-21swapper/009:23:070
176199129,2cyclictest381ktimersoftd/309:38:543
176199129,2cyclictest0-21swapper/311:00:143
176199129,2cyclictest0-21swapper/309:15:173
176199128,3cyclictest0-21swapper/308:15:173
176199121,7cyclictest18312-21diskmemload12:26:023
176199121,6cyclictest0-21swapper/312:00:003
176199120,2cyclictest0-21swapper/312:31:593
176199120,11cyclictest0-21swapper/308:11:003
176199120,11cyclictest0-21swapper/307:10:393
176199120,10cyclictest0-21swapper/312:20:293
176199120,10cyclictest0-21swapper/311:33:073
176099120,2cyclictest0-21swapper/207:20:112
175999129,2cyclictest0-21swapper/111:03:161
175999129,2cyclictest0-21swapper/110:10:461
175999129,2cyclictest0-21swapper/108:30:121
175999129,2cyclictest0-21swapper/107:55:131
175999129,2cyclictest0-21swapper/107:50:191
175999121,9cyclictest0-21swapper/107:25:171
175999121,3cyclictest5958-21munin-run07:20:001
175999120,2cyclictest0-21swapper/112:11:401
175999120,2cyclictest0-21swapper/111:41:221
175999120,2cyclictest0-21swapper/111:36:061
175999120,2cyclictest0-21swapper/111:10:111
175999120,2cyclictest0-21swapper/109:50:111
175999120,2cyclictest0-21swapper/108:11:011
175999120,2cyclictest0-21swapper/108:05:151
175999120,2cyclictest0-21swapper/107:46:031
175999120,11cyclictest0-21swapper/110:56:151
175999120,11cyclictest0-21swapper/108:50:501
175999120,11cyclictest0-21swapper/108:40:301
175999120,11cyclictest0-21swapper/108:00:141
175999120,11cyclictest0-21swapper/107:20:271
175999120,10cyclictest0-21swapper/107:35:191
175899129,2cyclictest2656-21iostat_ios07:10:160
175899129,2cyclictest18312-21diskmemload09:45:190
175899129,2cyclictest0-21swapper/012:25:010
175899129,2cyclictest0-21swapper/011:25:150
175899129,2cyclictest0-21swapper/010:54:250
175899129,2cyclictest0-21swapper/010:07:180
175899129,2cyclictest0-21swapper/010:02:300
175899129,2cyclictest0-21swapper/009:40:160
175899129,2cyclictest0-21swapper/008:55:120
175899120,2cyclictest0-21swapper/011:41:120
175899120,2cyclictest0-21swapper/011:32:010
175899120,2cyclictest0-21swapper/011:03:190
175899120,2cyclictest0-21swapper/007:25:120
175899120,11cyclictest0-21swapper/012:36:570
175899120,11cyclictest0-21swapper/011:05:160
175899120,11cyclictest0-21swapper/010:34:190
175899120,11cyclictest0-21swapper/007:46:030
176199118,2cyclictest381ktimersoftd/310:58:033
176199118,2cyclictest381ktimersoftd/308:40:573
176199118,2cyclictest0-21swapper/311:05:113
176199118,2cyclictest0-21swapper/310:10:143
176199118,2cyclictest0-21swapper/309:54:143
176199118,2cyclictest0-21swapper/309:21:593
176199118,2cyclictest0-21swapper/308:25:153
176199112,7cyclictest0-21swapper/311:43:013
176199112,6cyclictest0-21swapper/308:54:023
176199111,7cyclictest0-21swapper/311:51:023
176199111,6cyclictest18312-21diskmemload11:11:003
176199110,10cyclictest0-21swapper/310:35:563
175999118,2cyclictest0-21swapper/108:55:101
175999116,3cyclictest4390-21aten2.4_r3power08:35:121
175999111,7cyclictest0-21swapper/107:11:591
175999110,9cyclictest32625-21munin-node1
175999110,9cyclictest16272-21apt-get09:05:051
175999110,9cyclictest0-21swapper/108:15:121
175999110,10cyclictest0-21swapper/108:20:301
175899118,2cyclictest11599-21unixbench_multi07:31:020
175899118,2cyclictest0-21swapper/009:15:380
175899118,2cyclictest0-21swapper/008:25:140
175899118,2cyclictest0-21swapper/008:00:190
175899118,2cyclictest0-21swapper/007:20:100
175899110,2cyclictest18312-21diskmemload12:17:460
176199107,2cyclictest15662-21ssh10:16:053
176199107,2cyclictest0-21swapper/309:01:203
176199104,4cyclictest3703-21sshd07:16:183
176199104,3cyclictest0-21swapper/310:20:123
176199104,3cyclictest0-21swapper/310:20:123
176199103,5cyclictest6430-21grep07:20:113
176199101,6cyclictest0-21swapper/307:51:013
176199100,6cyclictest0-21swapper/308:31:013
176199100,6cyclictest0-21swapper/308:06:013
175999106,3cyclictest0-21swapper/109:00:151
175999100,9cyclictest30150-21kworker/u8:208:47:041
175899107,2cyclictest8437-21apt-get08:45:100
175899107,2cyclictest16202-21kworker/u8:109:05:040
175899107,2cyclictest0-21swapper/008:20:120
175899107,2cyclictest0-21swapper/008:10:490
175899107,2cyclictest0-21swapper/008:05:160
175899106,2cyclictest0-21swapper/008:31:020
17619994,3cyclictest8884-21fschecks_count08:45:133
17619994,3cyclictest21637-21sendmail_mailtr07:56:003
17619994,3cyclictest182662sleep307:49:573
17619991,6cyclictest0-21swapper/307:25:113
17589996,2cyclictest24301-21kworker/u8:108:16:040
17589996,2cyclictest0-21swapper/009:01:030
17589995,3cyclictest1455-21kworker/u8:107:15:120
17589990,8cyclictest0-21swapper/008:36:210
17589990,7cyclictest0-21swapper/007:55:140
17589990,2cyclictest0-21swapper/007:51:040
17619983,3cyclictest22549-21aten2.4_r3power08:00:123
17589980,7cyclictest0-21swapper/008:41:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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