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2026-09-12 - 16:13

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

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 here to display the system's profile data or here to proceed to next system.
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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack2slot7s.osadl.org (updated Sat Sep 12, 2026 12:42:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4191200995938,18cyclictest148880-21systemctl12:20:010
4191200995326,24cyclictest131248-21aten_r2power_fr11:50:590
4191202995245,3cyclictest0-21swapper/211:46:082
4191200995126,3cyclictest0-21swapper/007:10:010
419120299502,27cyclictest351ktimers/208:16:122
4191200994941,5cyclictest124611-21systemd11:40:020
419120099493,40cyclictest65041-21sshd10:01:120
419120299482,22cyclictest131840-21ssh11:51:082
4191201994824,4cyclictest171rcu_preempt12:16:081
419120199482,37cyclictest109064-21ssh11:14:031
419120299475,35cyclictest16142-21sshd08:11:132
4191202994735,9cyclictest161036-21idleruntime-cro12:40:012
4191202994735,9cyclictest161036-21idleruntime-cro12:40:012
4191201994739,5cyclictest15242-21systemd-run08:10:021
4191201994637,6cyclictest37140-21uniq09:16:051
4191201994637,4cyclictest0-21swapper/112:10:131
419120099464,12cyclictest12650irq/32-eth007:41:130
419120099464,12cyclictest12650irq/32-eth007:41:130
419120299451,35cyclictest71094-21ssh10:11:102
4191202994331,9cyclictest95723-21switchtime10:51:192
419120199436,3cyclictest77230-21ssh10:21:151
419120199436,3cyclictest77230-21ssh10:21:151
4191201994336,4cyclictest97178-21ssh10:55:011
4191201994335,5cyclictest63752-21grep10:00:011
4191200994331,7cyclictest151ktimers/011:26:180
4191200994331,7cyclictest151ktimers/011:26:180
4191200994321,15cyclictest12650irq/32-eth009:26:140
4191202994234,5cyclictest30240-21systemd-run09:00:012
4191201994214,4cyclictest0-21swapper/108:51:121
4191200994229,10cyclictest136682-21cron12:00:010
4191200994224,4cyclictest1003-21mta-sts-daemon11:40:410
419120299411,34cyclictest150210-21ssh12:21:152
419120199412,27cyclictest74132-21ssh10:16:091
4191200994134,4cyclictest4192705-21systemd-run07:15:020
4191200994133,6cyclictest63753-21cut10:00:010
4191200994133,5cyclictest151ktimers/008:56:160
4191200994132,6cyclictest145821-21cron12:15:010
4191202994028,4cyclictest0-21swapper/209:41:142
4191201994030,6cyclictest111168-21unixbench-2d11:16:241
4191201994027,10cyclictest128622-21latency11:46:091
4191202993932,4cyclictest136685-21cron12:00:012
4191202993931,5cyclictest85067-21systemd-run10:35:012
4191202993931,5cyclictest85067-21systemd-run10:35:012
4191202993928,7cyclictest420-21avahi-daemon12:08:292
419120199396,4cyclictest171rcu_preempt11:06:151
419120199394,29cyclictest98497-21ssh10:56:141
4191201993931,5cyclictest156799-21unixbench_singl12:31:231
4191201993931,3cyclictest0-21swapper/110:36:211
4191201993929,7cyclictest85056-21systemd-run10:35:011
4191201993929,7cyclictest85056-21systemd-run10:35:011
419120199392,32cyclictest49794-21ssh09:36:121
419120099393,30cyclictest52951-21ssh09:41:150
4191200993932,4cyclictest1760-21systemd-run07:25:020
4191200993931,5cyclictest34074-21fschecks_time09:11:040
4191200993928,4cyclictest0-21swapper/009:51:170
4191202993830,5cyclictest1003-21mta-sts-daemon12:15:592
4191201993832,3cyclictest0-21swapper/111:35:001
4191201993830,5cyclictest115484-21systemd-run11:25:011
4191201993830,5cyclictest115484-21systemd-run11:25:011
4191200993829,6cyclictest567-21gdbus08:40:010
4191202993727,4cyclictest0-21swapper/212:31:152
4191201993730,3cyclictest0-21swapper/110:06:141
4191201993728,6cyclictest132041-21proc_pri11:51:161
4191201993728,5cyclictest20032-21aten_r2power_en08:26:021
4191201993727,6cyclictest158872-21grep12:36:091
4191201993727,6cyclictest158872-21grep12:36:091
4191201993724,8cyclictest0-21swapper/109:46:091
4191201993718,12cyclictest271ktimers/108:56:101
4191200993729,5cyclictest1-21systemd10:55:010
4191202993631,3cyclictest77202-21kworker/u8:710:21:132
4191202993631,3cyclictest77202-21kworker/u8:710:21:132
4191202993628,5cyclictest117040-21switchtime11:26:242
4191202993628,5cyclictest117040-21switchtime11:26:242
4191202993627,6cyclictest75925-21cron10:20:012
419120199363,26cyclictest122779-21ssh11:36:121
4191201993630,2cyclictest0-21swapper/109:26:101
4191201993628,5cyclictest92407-21sshd10:46:131
4191201993628,5cyclictest18131-21unixbench_singl08:16:221
419120099363,25cyclictest68231-21ssh10:06:190
4191200993611,20cyclictest12650irq/32-eth010:46:150
419120299353,23cyclictest5622-21sshd07:36:122
419120299353,23cyclictest5622-21sshd07:36:122
4191202993528,4cyclictest1002-21mta-sts-daemon09:56:112
4191202993527,4cyclictest0-21swapper/211:41:212
4191202993523,9cyclictest1-21systemd10:41:022
419120299352,24cyclictest137941-21ssh12:01:122
4191201993528,3cyclictest0-21swapper/109:10:011
4191201993526,6cyclictest19099-21ntpq08:21:121
419120099353,10cyclictest428-21mta-sts-daemon08:06:120
4191200993529,4cyclictest141575-21unixbench_multi12:06:230
4191200993527,5cyclictest111182-21unixbench-2d11:16:240
4191200993522,10cyclictest41836-21sh09:23:150
4191202993427,4cyclictest124565-21awk11:40:012
4191202993426,5cyclictest102035-21unixbench-2d11:01:242
4191202993425,6cyclictest105096-21unixbench_multi11:06:232
4191201993415,15cyclictest421-21dbus-daemon07:26:121
4191200993427,5cyclictest49384-21fschecks_time09:36:040
4191200993427,4cyclictest91137-21kworker/u8:1+xprtiod10:45:020
4191200993425,7cyclictest19101-21sshd08:21:120
4191200993425,6cyclictest3402845-21cups-browsed11:20:110
4191200993425,6cyclictest3402845-21cups-browsed11:20:110
4191202993326,4cyclictest39335-21munin-run09:20:012
4191202993326,4cyclictest19735-21idleruntime-cro08:25:012
4191202993326,4cyclictest0-21swapper/208:35:012
4191202993326,3cyclictest0-21swapper/209:11:192
4191202993321,9cyclictest567-21gdbus11:31:242
4191201993327,3cyclictest0-21swapper/108:05:011
4191201993327,2cyclictest0-21swapper/108:12:131
4191201993326,4cyclictest439-21systemd-logind07:35:011
4191201993326,4cyclictest439-21systemd-logind07:35:011
4191201993326,3cyclictest0-21swapper/112:21:231
4191201993324,6cyclictest420-21avahi-daemon07:16:061
419120199331,28cyclictest40637-21rm09:21:131
4191200993327,3cyclictest155566-21aten_r2power_en12:31:010
4191200993325,5cyclictest158573-21aten2.4-expect12:36:020
4191200993325,5cyclictest158573-21aten2.4-expect12:36:020
4191200993324,6cyclictest0-21swapper/011:46:030
4191202993224,5cyclictest47330-21head09:31:252
4191202993224,5cyclictest24755-21fschecks_time08:41:032
4191202993224,5cyclictest115460-21cron11:25:002
4191202993224,5cyclictest115460-21cron11:25:002
419120199325,6cyclictest171rcu_preempt10:41:151
4191201993225,4cyclictest31717-21cron09:05:011
4191201993223,6cyclictest48553-21sh09:35:021
4191201993214,11cyclictest271ktimers/110:26:171
4191201993214,11cyclictest271ktimers/110:26:171
4191200993225,5cyclictest421-21dbus-daemon07:35:010
4191200993225,5cyclictest421-21dbus-daemon07:35:010
4191200993225,4cyclictest75921-21ssh10:20:010
4191200993225,4cyclictest151917-21cron12:25:010
4191200993225,4cyclictest10825-21latency_hist07:55:020
4191200993224,4cyclictest18309-21latency_hist08:20:020
4191200993223,6cyclictest3402845-21cups-browsed09:17:320
4191200993218,10cyclictest12650irq/32-eth011:06:110
419120299315,16cyclictest144097-21ssh12:11:142
4191202993125,3cyclictest0-21swapper/210:05:012
4191202993124,3cyclictest0-21swapper/209:46:152
4191202993123,5cyclictest9158-21unixbench_singl07:46:212
4191202993123,5cyclictest1-21systemd09:10:012
4191202993123,4cyclictest1000-21mta-sts-daemon09:28:352
4191202993123,3cyclictest0-21swapper/209:21:132
419120299312,25cyclictest92321-21ssh10:46:092
4191202993121,6cyclictest3402845-21cups-browsed10:07:032
419120299311,25cyclictest80339-21ssh10:26:192
419120299311,25cyclictest80339-21ssh10:26:192
4191201993124,4cyclictest53413-21unixbench_multi09:41:231
4191201993124,3cyclictest0-21swapper/111:26:191
4191201993124,3cyclictest0-21swapper/111:26:191
4191201993123,5cyclictest34131-21rm09:11:051
4191201993122,5cyclictest1002-21mta-sts-daemon09:53:351
4191201993121,7cyclictest23586-21ntp_kernel_pll_08:36:131
419120099313,23cyclictest119827-21ssh11:31:150
4191200993126,3cyclictest31714-21cron09:05:010
4191200993125,4cyclictest137572-21fschecks_count12:01:060
4191200993120,5cyclictest102966-21sh11:04:000
4191200993116,11cyclictest85044-21/usr/sbin/munin10:35:010
4191200993116,11cyclictest85044-21/usr/sbin/munin10:35:010
4191202993023,4cyclictest0-21swapper/209:51:182
4191202993023,4cyclictest0-21swapper/209:01:132
4191202993022,5cyclictest3402845-21cups-browsed08:47:052
4191202993018,8cyclictest567-21gdbus10:36:252
4191201993024,3cyclictest0-21swapper/112:01:051
4191201993023,4cyclictest65652-21unixbench_singl10:01:241
4191201993022,5cyclictest420-21avahi-daemon07:21:181
4191201993022,5cyclictest12213-21munin-plugin-st08:00:011
4191201993021,6cyclictest420-21avahi-daemon07:55:011
419120199301,23cyclictest101541-21ssh11:01:141
4191200993024,4cyclictest88070-21systemctl10:40:000
4191200993024,4cyclictest55194-21basename09:45:590
4191200993024,4cyclictest109402-21cron11:15:010
4191200993024,3cyclictest0-21swapper/010:30:000
4191200993024,3cyclictest0-21swapper/010:30:000
4191200993023,4cyclictest48518-21cron09:35:010
419120099302,22cyclictest71060-21ssh10:11:080
4191200993018,9cyclictest0-21swapper/010:21:010
4191200993018,9cyclictest0-21swapper/010:21:010
4191200993017,10cyclictest33144-21head09:06:210
4191200993011,15cyclictest12750irq/33-eth012:26:160
419120299293,20cyclictest11667-21sshd07:56:122
4191202992922,3cyclictest0-21swapper/210:56:132
419120299292,20cyclictest14648-21sshd08:06:122
4191201992921,3cyclictest0-21swapper/110:10:121
4191201992920,6cyclictest420-21avahi-daemon07:37:121
4191201992920,6cyclictest420-21avahi-daemon07:37:121
4191201992920,5cyclictest140599-21fschecks_count12:06:041
4191201992915,9cyclictest421-21dbus-daemon12:28:191
4191200992921,4cyclictest0-21swapper/007:16:100
419120299284,19cyclictest265-21systemd-journal07:31:132
419120299284,19cyclictest265-21systemd-journal07:31:132
4191202992817,8cyclictest13106-21ntp_kernel_pll_08:01:112
419120199283,6cyclictest171rcu_preempt07:11:201
4191201992820,5cyclictest1-21systemd08:50:011
4191200992821,4cyclictest3744012-21kworker/u8:17-xprtiod07:40:010
4191200992821,4cyclictest3744012-21kworker/u8:17-xprtiod07:40:010
4191200992821,4cyclictest0-21swapper/007:56:090
4191202992722,2cyclictest0-21swapper/209:40:002
4191202992721,3cyclictest0-21swapper/208:40:012
4191202992718,5cyclictest420-21avahi-daemon12:29:132
419120199272,20cyclictest25148-21modprobe08:41:121
419120199272,18cyclictest126013-21ps11:41:221
4191201992713,3cyclictest33219-21diskmemload12:00:011
4191200992722,3cyclictest13525-21timerwakeupswit08:01:220
4191200992721,4cyclictest27864-21kernelversion08:51:060
4191200992721,4cyclictest2272-21fschecks_time07:26:030
419120299262,12cyclictest110661-21ssh11:16:132
4191202992618,2cyclictest0-21swapper/207:26:142
419120199263,7cyclictest171rcu_preempt08:31:111
4191200992621,3cyclictest1001-21mta-sts-daemon08:46:230
4191200992614,9cyclictest151ktimers/010:56:130
4191202992518,3cyclictest0-21swapper/211:11:002
4191202992517,5cyclictest265-21systemd-journal07:55:002
419120299250,19cyclictest4154938-21kworker/u8:3+xprtiod07:41:132
419120299250,19cyclictest4154938-21kworker/u8:3+xprtiod07:41:132
4191201992518,4cyclictest7732-21sh07:45:001
4191201992518,4cyclictest7732-21sh07:45:001
4191201992516,7cyclictest8380-21kernelversion07:46:051
4191202992417,4cyclictest482-21aten_r2power_cu07:21:012
4191202992417,4cyclictest21223-21munin-plugin-st08:30:012
419120299241,18cyclictest1-21systemd07:20:022
4191201992417,5cyclictest0-21swapper/107:10:021
4191200992416,5cyclictest16704-21cron08:15:010
4191200992416,5cyclictest1001-21mta-sts-daemon08:41:040
4191200992412,9cyclictest0-21swapper/007:46:040
4191202992317,3cyclictest0-21swapper/207:10:022
4191200992315,5cyclictest0-21swapper/008:25:270
4191202992216,3cyclictest0-21swapper/207:11:182
4191202992212,7cyclictest27515-21aten_r2power_en08:51:002
419120099222,15cyclictest22080-21ntpq08:31:110
419120399192,8cyclictest0-21swapper/311:31:103
419120399184,9cyclictest0-21swapper/311:16:133
419120399184,7cyclictest0-21swapper/311:01:133
419120399183,8cyclictest0-21swapper/310:41:133
419120399183,8cyclictest0-21swapper/310:11:023
419120399174,7cyclictest0-21swapper/312:01:133
419120399174,6cyclictest0-21swapper/311:51:083
419120399174,5cyclictest0-21swapper/309:26:083
419120399173,9cyclictest0-21swapper/312:36:153
419120399173,9cyclictest0-21swapper/312:36:153
419120399173,5cyclictest0-21swapper/308:41:093
419120399172,9cyclictest0-21swapper/311:46:053
419120399172,9cyclictest0-21swapper/310:36:153
419120399172,8cyclictest0-21swapper/311:26:113
419120399172,8cyclictest0-21swapper/311:26:113
419120399172,7cyclictest0-21swapper/311:06:123
419120399172,11cyclictest0-21swapper/311:36:003
419120399171,10cyclictest0-21swapper/312:16:163
419120399164,7cyclictest0-21swapper/309:56:123
419120399164,5cyclictest0-21swapper/307:31:133
419120399164,5cyclictest0-21swapper/307:31:133
419120399163,9cyclictest0-21swapper/310:46:153
419120399163,8cyclictest0-21swapper/310:26:153
419120399163,8cyclictest0-21swapper/310:26:153
419120399163,7cyclictest0-21swapper/309:16:123
419120399162,8cyclictest0-21swapper/310:16:053
419120399162,7cyclictest0-21swapper/311:11:163
419120399162,7cyclictest0-21swapper/308:51:103
419120399162,6cyclictest0-21swapper/308:11:113
419120399161,7cyclictest0-21swapper/307:36:143
419120399161,7cyclictest0-21swapper/307:36:143
419120399154,6cyclictest0-21swapper/309:46:103
419120399153,7cyclictest0-21swapper/307:26:123
419120399153,5cyclictest0-21swapper/308:01:133
419120399152,8cyclictest0-21swapper/312:27:123
419120399152,8cyclictest0-21swapper/312:06:103
419120399152,8cyclictest0-21swapper/309:41:233
419120399152,6cyclictest0-21swapper/310:06:023
419120399152,6cyclictest0-21swapper/307:46:113
419120399151,9cyclictest0-21swapper/309:21:123
419120399151,8cyclictest0-21swapper/312:31:103
419120399151,8cyclictest0-21swapper/311:56:083
419120399151,7cyclictest0-21swapper/310:31:093
419120399151,7cyclictest0-21swapper/310:31:093
419120399151,7cyclictest0-21swapper/307:56:073
419120399145,7cyclictest0-21swapper/310:21:063
419120399145,7cyclictest0-21swapper/310:21:063
419120399143,4cyclictest0-21swapper/308:46:113
419120399142,8cyclictest0-21swapper/311:21:133
419120399142,8cyclictest0-21swapper/311:21:133
419120399142,8cyclictest0-21swapper/310:56:103
419120399142,7cyclictest0-21swapper/310:01:163
419120399142,7cyclictest0-21swapper/309:51:193
419120399142,7cyclictest0-21swapper/309:11:103
419120399142,7cyclictest0-21swapper/309:10:013
419120399142,7cyclictest0-21swapper/308:16:123
419120399142,6cyclictest0-21swapper/308:30:013
419120399142,5cyclictest0-21swapper/308:36:123
419120399141,8cyclictest0-21swapper/307:41:103
419120399141,8cyclictest0-21swapper/307:41:103
419120399141,6cyclictest0-21swapper/309:01:113
419120399141,6cyclictest0-21swapper/307:51:113
419120399133,6cyclictest0-21swapper/311:41:023
419120399133,6cyclictest0-21swapper/309:36:013
419120399133,5cyclictest0-21swapper/309:31:043
419120399132,7cyclictest0-21swapper/312:21:013
419120399132,6cyclictest0-21swapper/312:11:013
419120399132,5cyclictest0-21swapper/310:50:453
419120399131,7cyclictest0-21swapper/308:06:093
419120399131,6cyclictest0-21swapper/307:11:143
419120399124,4cyclictest0-21swapper/308:56:103
419120399123,5cyclictest0-21swapper/308:31:123
419120399121,6cyclictest0-21swapper/307:21:113
419120399121,5cyclictest0-21swapper/308:21:073
419120399113,4cyclictest0-21swapper/307:16:043
419120399102,5cyclictest0-21swapper/307:10:023
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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