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2026-08-13 - 19:07

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #b, 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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  Phytec
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.

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 all highest latencies:
System rackbslot5s.osadl.org (updated Thu Aug 13, 2026 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1207956994536,5cyclictest204-21dbus-daemon07:40:163
1207956994534,7cyclictest1292001-21grep11:10:263
1207952994539,4cyclictest1287221-21kworker/u8:0+events_unbound11:10:562
1207952994538,4cyclictest1306127-21munin-plugin-st11:54:592
1207956994334,5cyclictest1312950-21munin-plugin-st12:15:003
1207942994336,4cyclictest1259862-21sendmail09:40:010
1207947994233,6cyclictest1-21systemd07:35:131
1207952994135,4cyclictest1306468-21kworker/u8:0+events_unbound11:56:012
1207952994125,5cyclictest1276789-21kworker/u8:0+events_unbound10:35:262
1207947994129,9cyclictest1256442-21cron09:30:011
1207956994018,10cyclictest131rcu_preempt08:20:203
1207952994017,7cyclictest131rcu_preempt07:20:122
1207942994026,10cyclictest121ktimers/012:10:130
1207952993932,4cyclictest1258149-21sh09:35:002
1207952993913,6cyclictest131rcu_preempt10:30:132
1207956993830,4cyclictest0-21swapper/309:40:013
1207956993827,7cyclictest0-21swapper/309:25:253
1207956993826,4cyclictest131rcu_preempt12:29:243
1207952993831,5cyclictest1304636-21kworker/u8:2+events_unbound12:16:032
1207952993831,4cyclictest1318274-21sh12:30:002
1207952993826,8cyclictest0-21swapper/211:00:262
1207947993830,5cyclictest1312978-21latency_hist12:15:001
1207942993832,3cyclictest0-21swapper/007:40:000
1207942993828,6cyclictest0-21swapper/011:15:000
1207956993726,7cyclictest1230176-21grep08:10:253
1207956993720,9cyclictest131rcu_preempt11:33:513
1207952993727,6cyclictest0-21swapper/210:40:262
1207942993730,4cyclictest1249482-21latency_hist09:10:010
1207942993728,6cyclictest1245563-21unixbench_singl08:55:240
1207942993725,8cyclictest1280046-21grep10:35:250
1207942993715,9cyclictest131rcu_preempt07:10:110
1207956993628,6cyclictest1223743-21kworker/u8:1+events_unbound08:00:413
1207956993628,6cyclictest1223743-21kworker/u8:1+events_unbound08:00:413
1207956993625,4cyclictest131rcu_preempt10:48:473
1207952993630,4cyclictest1232313-21kworker/u8:0+events_unbound08:39:412
1207952993623,9cyclictest311ktimers/212:05:112
1207952993622,5cyclictest1211737-21kworker/u8:2+events_unbound07:18:422
1207952993619,6cyclictest131rcu_preempt10:00:112
1207947993625,8cyclictest1273727-21sendmail10:20:011
1207947993625,8cyclictest1273727-21sendmail10:20:001
1207942993630,3cyclictest0-21swapper/009:15:010
1207942993628,4cyclictest0-21swapper/010:00:000
1207942993624,9cyclictest121ktimers/012:35:130
1207956993527,6cyclictest1290691-21kworker/u8:1+events_unbound11:18:423
1207956993524,7cyclictest0-21swapper/309:55:153
1207956993519,5cyclictest131rcu_preempt07:37:233
1207956993518,7cyclictest1298975-21kworker/u8:3+events_unbound11:35:463
1207956993517,15cyclictest391ktimers/307:32:133
1207952993524,7cyclictest0-21swapper/211:25:252
1207952993524,7cyclictest0-21swapper/210:20:262
1207952993524,7cyclictest0-21swapper/210:20:252
1207952993514,6cyclictest131rcu_preempt12:35:142
1207947993527,5cyclictest1289069-21cron11:05:011
1207947993526,6cyclictest164-21systemd-journal07:40:171
1207947993525,7cyclictest1249450-21sort09:10:001
1207956993426,4cyclictest0-21swapper/309:30:253
1207956993419,5cyclictest1242549-21kworker/u8:0+events_unbound09:18:013
1207952993428,4cyclictest1228197-21kworker/u8:2+events_unbound08:20:302
1207952993426,5cyclictest0-21swapper/208:30:162
1207952993423,7cyclictest0-21swapper/209:45:262
1207952993422,9cyclictest311ktimers/209:15:132
1207947993427,4cyclictest0-21swapper/110:55:171
120795699336,7cyclictest40-21ksoftirqd/309:50:143
1207956993327,4cyclictest1287221-21kworker/u8:0+events_unbound11:00:403
1207956993325,4cyclictest0-21swapper/310:35:153
1207956993325,4cyclictest0-21swapper/310:30:163
1207956993324,4cyclictest0-21swapper/311:59:593
1207956993323,5cyclictest1275436-21idleruntime-cro10:25:013
1207956993323,5cyclictest1275436-21idleruntime-cro10:25:003
1207956993321,5cyclictest131rcu_preempt11:24:133
1207956993316,4cyclictest131rcu_preempt08:55:243
1207956993314,4cyclictest0-21swapper/307:55:153
1207952993322,7cyclictest0-21swapper/208:25:252
1207952993317,5cyclictest1216674-21kworker/u8:0-events_freezable_power_07:40:152
1207952993312,13cyclictest32-21ksoftirqd/208:50:002
1207952993311,4cyclictest131rcu_preempt08:54:082
1207947993326,4cyclictest0-21swapper/110:05:001
1207947993321,9cyclictest1314881-21idleruntime-cro12:20:011
1207947993311,10cyclictest131rcu_preempt09:30:101
1207956993222,7cyclictest391ktimers/307:15:233
1207956993218,6cyclictest131rcu_preempt10:10:533
1207956993218,6cyclictest131rcu_preempt10:10:533
1207956993216,7cyclictest1304636-21kworker/u8:2+events_unbound11:50:573
1207956993216,6cyclictest1209224-21kworker/u8:2+events_unbound07:11:343
1207956993213,9cyclictest131rcu_preempt08:08:513
120795299327,6cyclictest32-21ksoftirqd/207:25:152
1207952993226,4cyclictest1228461-21unixbench_multi08:05:232
1207952993223,6cyclictest0-21swapper/211:20:012
1207952993222,6cyclictest0-21swapper/210:55:162
1207952993222,6cyclictest0-21swapper/208:20:012
1207952993221,7cyclictest0-21swapper/207:50:162
1207952993221,7cyclictest0-21swapper/207:10:242
1207952993219,5cyclictest131rcu_preempt10:50:192
1207952993213,5cyclictest131rcu_preempt11:08:442
1207952993211,5cyclictest0-21swapper/207:30:132
1207952993210,12cyclictest32-21ksoftirqd/212:00:182
1207947993224,4cyclictest0-21swapper/111:45:001
1207947993222,6cyclictest0-21swapper/107:15:021
1207942993222,7cyclictest1253028-21sh09:20:000
120794299321,5cyclictest131rcu_preempt11:30:110
120795699319,7cyclictest40-21ksoftirqd/308:40:003
120795699315,7cyclictest40-21ksoftirqd/307:45:233
120795699314,6cyclictest40-21ksoftirqd/312:30:243
1207956993121,6cyclictest0-21swapper/308:20:023
1207956993120,8cyclictest391ktimers/310:00:213
1207956993120,5cyclictest131rcu_preempt08:30:143
1207956993119,9cyclictest391ktimers/312:20:003
1207956993119,3cyclictest131rcu_preempt09:06:283
1207956993116,4cyclictest131rcu_preempt09:41:143
1207956993112,3cyclictest131rcu_preempt11:08:503
120795299319,10cyclictest32-21ksoftirqd/211:20:242
120795299313,5cyclictest32-21ksoftirqd/209:25:112
1207952993123,4cyclictest0-21swapper/210:15:472
1207952993123,4cyclictest0-21swapper/210:15:472
1207952993119,3cyclictest131rcu_preempt08:10:142
1207952993115,6cyclictest32-21ksoftirqd/209:10:002
1207952993111,6cyclictest131rcu_preempt12:15:012
1207952993110,12cyclictest32-21ksoftirqd/211:35:232
1207952993110,10cyclictest32-21ksoftirqd/209:00:232
1207947993125,3cyclictest1222130-21kthreadd07:50:011
1207947993123,5cyclictest0-21swapper/108:55:001
1207947993123,4cyclictest0-21swapper/109:15:161
1207947993122,6cyclictest0-21swapper/112:30:241
1207947993121,7cyclictest0-21swapper/107:20:011
1207947993120,7cyclictest1295423-21grep11:20:241
1207947993118,9cyclictest0-21swapper/112:39:591
1207942993123,4cyclictest0-21swapper/011:25:560
1207942993123,4cyclictest0-21swapper/010:00:270
1207942993122,6cyclictest0-21swapper/008:25:240
1207956993020,7cyclictest391ktimers/312:35:173
1207956993019,8cyclictest391ktimers/309:00:163
1207956993019,8cyclictest391ktimers/307:20:233
1207956993014,3cyclictest131rcu_preempt08:43:273
1207956993011,4cyclictest0-21swapper/312:20:133
1207956993010,5cyclictest1280483-21kworker/u8:1+events_unbound11:00:003
120795299309,9cyclictest131rcu_preempt10:00:012
120795299309,10cyclictest32-21ksoftirqd/207:45:202
1207952993022,5cyclictest1316170-21unixbench_singl12:20:252
1207952993021,5cyclictest0-21swapper/209:40:282
1207952993016,8cyclictest131rcu_preempt10:05:132
1207952993012,10cyclictest32-21ksoftirqd/208:40:192
1207947993022,5cyclictest208-21systemd-logind07:55:211
1207947993022,4cyclictest0-21swapper/110:40:011
1207947993021,4cyclictest0-21swapper/109:00:011
1207942993024,3cyclictest0-21swapper/011:20:000
1207942993023,4cyclictest0-21swapper/008:35:250
1207942993022,4cyclictest0-21swapper/008:15:260
120795699298,13cyclictest1249410-21apt-get09:10:043
120795699293,7cyclictest40-21ksoftirqd/312:10:023
1207956992921,6cyclictest1283783-21kworker/u8:0+events_unbound10:53:103
1207956992920,6cyclictest391ktimers/311:25:163
1207956992919,7cyclictest391ktimers/310:25:243
1207956992919,7cyclictest381rcuc/310:16:023
1207956992919,7cyclictest381rcuc/310:16:023
1207956992915,4cyclictest131rcu_preempt10:05:233
1207956992915,10cyclictest1-21systemd07:50:213
1207956992914,4cyclictest131rcu_preempt09:45:423
1207956992912,3cyclictest131rcu_preempt11:48:493
1207956992912,3cyclictest131rcu_preempt11:48:493
1207956992912,10cyclictest131rcu_preempt11:40:133
1207956992912,10cyclictest131rcu_preempt10:40:153
1207956992912,10cyclictest0-21swapper/308:52:033
1207956992911,10cyclictest131rcu_preempt12:01:053
120795299298,10cyclictest32-21ksoftirqd/211:30:232
1207952992918,4cyclictest131rcu_preempt09:20:222
1207952992915,3cyclictest131rcu_preempt11:40:172
1207952992912,7cyclictest32-21ksoftirqd/209:55:002
1207952992910,6cyclictest131rcu_preempt10:10:262
1207952992910,6cyclictest131rcu_preempt10:10:262
1207947992922,4cyclictest1235343-21grep08:25:251
1207947992921,5cyclictest1292047-21grep11:10:251
1207942992922,4cyclictest1236217-21fschecks_time08:30:160
1207942992920,6cyclictest0-21swapper/010:05:270
1207942992918,8cyclictest1264520-21grep09:50:240
1207956992818,7cyclictest391ktimers/308:45:243
1207956992818,7cyclictest391ktimers/308:25:233
1207956992816,5cyclictest131rcu_preempt07:25:123
120795299288,10cyclictest32-21ksoftirqd/211:45:242
120795299288,10cyclictest32-21ksoftirqd/211:45:242
120795299284,8cyclictest32-21ksoftirqd/209:10:252
120795299284,8cyclictest32-21ksoftirqd/207:55:242
1207952992820,4cyclictest0-21swapper/207:35:162
1207952992810,10cyclictest131rcu_preempt08:55:202
1207947992821,5cyclictest1242549-21kworker/u8:0+events_unbound09:00:401
1207947992821,4cyclictest1276789-21kworker/u8:0+events_unbound10:40:541
1207947992820,4cyclictest0-21swapper/111:50:171
1207942992822,3cyclictest0-21swapper/010:10:280
1207942992822,3cyclictest0-21swapper/010:10:280
1207942992821,4cyclictest13550irq/42-30be0000.ethernet09:30:000
1207942992821,4cyclictest0-21swapper/011:35:260
1207942992820,4cyclictest0-21swapper/008:50:360
1207942992819,5cyclictest1286876-21grep10:55:250
1207942992819,5cyclictest0-21swapper/010:15:270
1207942992819,5cyclictest0-21swapper/010:15:260
120795299277,11cyclictest0-21swapper/208:01:532
120795299277,11cyclictest0-21swapper/208:01:522
1207952992721,4cyclictest1256086-21kworker/u8:3+events_unbound09:39:102
1207952992712,9cyclictest131rcu_preempt12:31:222
1207947992721,3cyclictest0-21swapper/111:15:141
1207947992713,11cyclictest1207935-21cyclictest10:05:131
1207942992717,7cyclictest1225061-21grep07:55:240
1207947992620,3cyclictest0-21swapper/109:40:251
1207947992618,6cyclictest1216674-21kworker/u8:0+events_unbound07:50:211
1207947992618,5cyclictest1307827-21sendmail12:00:001
1207947992618,5cyclictest1277139-21munin-plugin-st10:30:001
1207947992616,5cyclictest0-21swapper/108:00:231
1207947992616,5cyclictest0-21swapper/108:00:221
1207942992621,3cyclictest1207935-21cyclictest08:20:140
1207942992620,3cyclictest0-21swapper/007:20:020
1207942992619,5cyclictest11-21ksoftirqd/008:10:130
1207942992616,7cyclictest1307838-21tr11:59:590
1207942992616,7cyclictest1241331-21cut08:45:130
120795299251,13cyclictest32-21ksoftirqd/210:25:212
1207947992518,4cyclictest1275428-21auditctl10:25:001
1207947992518,4cyclictest1275428-21auditctl10:25:001
1207947992518,4cyclictest0-21swapper/112:25:151
1207947992517,5cyclictest0-21swapper/111:25:261
1207947992515,7cyclictest1282476-21seq10:45:081
1207947992515,7cyclictest1259778-21seq09:39:121
1207947992515,7cyclictest0-21swapper/112:00:161
1207947992515,6cyclictest0-21swapper/112:05:251
1207947992511,11cyclictest231ktimers/108:05:121
1207942992520,2cyclictest0-21swapper/007:25:180
1207942992519,3cyclictest0-21swapper/011:45:000
1207942992518,3cyclictest0-21swapper/007:50:000
1207942992517,5cyclictest0-21swapper/012:10:000
1207942992517,4cyclictest0-21swapper/011:54:590
1207942992515,7cyclictest1261101-21unixbench_multi09:40:270
1207942992514,8cyclictest204-21dbus-daemon09:00:370
120794299251,21cyclictest1314013-21/usr/sbin/munin12:15:240
120794299251,21cyclictest1275663-21apt-get10:25:110
1207947992418,4cyclictest1283783-21kworker/u8:0+events_unbound10:50:541
1207947992417,4cyclictest1250087-21seq09:10:151
1207947992417,4cyclictest1237483-21munin-plugin-st08:35:011
1207947992415,6cyclictest0-21swapper/111:40:001
1207947992415,6cyclictest0-21swapper/109:55:011
120794799241,4cyclictest0-21swapper/110:15:001
120794799241,4cyclictest0-21swapper/110:15:001
1207947992414,7cyclictest1213285-21seq07:21:161
1207942992420,2cyclictest13550irq/42-30be0000.ethernet10:20:120
1207942992420,2cyclictest13550irq/42-30be0000.ethernet10:20:110
1207942992419,2cyclictest0-21swapper/012:00:160
1207942992417,3cyclictest0-21swapper/012:32:160
1207942992416,4cyclictest0-21swapper/010:50:240
120794299241,19cyclictest0-21swapper/010:32:480
120794299241,19cyclictest0-21swapper/007:30:400
1207947992315,5cyclictest0-21swapper/109:55:261
1207947992312,8cyclictest1239420-21apt-get08:40:111
120794299236,5cyclictest12900842sort11:05:230
1207942992318,3cyclictest13550irq/42-30be0000.ethernet08:05:200
1207942992317,3cyclictest0-21swapper/009:30:250
1207942992316,3cyclictest0-21swapper/007:42:520
1207942992314,6cyclictest1281785-21grep10:40:270
120794299231,3cyclictest0-21swapper/007:20:140
120794299231,20cyclictest0-21swapper/010:45:230
120794299231,18cyclictest0-21swapper/012:21:300
120794299231,18cyclictest0-21swapper/011:24:280
1207947992216,3cyclictest0-21swapper/108:45:191
1207947992216,3cyclictest0-21swapper/108:15:231
1207947992216,3cyclictest0-21swapper/108:15:001
1207947992216,3cyclictest0-21swapper/107:30:211
1207947992216,3cyclictest0-21swapper/107:25:211
1207947992213,7cyclictest1303661-21mailstats11:45:221
1207947992213,7cyclictest1303661-21mailstats11:45:211
1207947992213,7cyclictest1238702-21sed08:35:241
1207947992213,6cyclictest1263367-21cut09:50:011
1207942992217,3cyclictest13550irq/42-30be0000.ethernet09:45:200
1207942992217,3cyclictest1254880-21latency_hist09:25:010
1207942992215,3cyclictest0-21swapper/011:04:580
120794299221,3cyclictest1316805-21apt-get12:25:120
120794299221,19cyclictest0-21swapper/007:53:440
120794299221,18cyclictest1240042-21ps08:40:230
1207947992115,3cyclictest0-21swapper/111:30:151
1207947992114,5cyclictest231ktimers/112:25:011
1207947992114,4cyclictest0-21swapper/110:30:171
1207947992113,4cyclictest0-21swapper/111:05:161
1207947992111,7cyclictest1253733-21wc09:20:201
1207942992116,3cyclictest11-21ksoftirqd/011:45:100
1207942992116,3cyclictest11-21ksoftirqd/011:45:100
1207947992014,4cyclictest231ktimers/108:20:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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