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2026-08-24 - 19:29

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 100 highest latencies:
System rack3slot5s.osadl.org (updated Mon Aug 24, 2026 12:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1285621610sleep1121650irq/29-eth0_g0_09:47:351
2640521590sleep0121650irq/29-eth0_g0_10:43:090
1211090ksoftirqd/1121750irq/30-eth0_g0_12:26:351
121970ksoftirqd/1121750irq/30-eth0_g0_07:20:541
121950ksoftirqd/1121750irq/30-eth0_g0_09:05:171
121890ksoftirqd/1121750irq/30-eth0_g0_11:48:551
121820ksoftirqd/1121750irq/30-eth0_g0_08:46:300
121640ksoftirqd/1121750irq/30-eth0_g0_11:40:161
121580ksoftirqd/1121750irq/30-eth0_g0_12:14:581
121580ksoftirqd/1121750irq/30-eth0_g0_07:16:030
38502540sleep1121750irq/30-eth0_g0_09:11:341
121540ksoftirqd/1121750irq/30-eth0_g0_10:41:301
121650530irq/29-eth0_g0_507299cyclictest10:46:311
121530ksoftirqd/1121650irq/29-eth0_g0_11:44:271
121500ksoftirqd/1121750irq/30-eth0_g0_12:36:051
121500ksoftirqd/1121750irq/30-eth0_g0_10:05:181
121500ksoftirqd/1121750irq/30-eth0_g0_09:24:311
121650490irq/29-eth0_g0_21096-21runrttasks10:21:360
121490ksoftirqd/1121750irq/30-eth0_g0_10:55:570
5072994812cyclictest62152sleep111:32:321
121750480irq/30-eth0_g0_507299cyclictest09:16:561
121650480irq/29-eth0_g0_507299cyclictest09:34:331
121480ksoftirqd/1121750irq/30-eth0_g0_09:59:590
121480ksoftirqd/1121750irq/30-eth0_g0_09:43:291
121480ksoftirqd/1121750irq/30-eth0_g0_09:40:401
121480ksoftirqd/1121650irq/29-eth0_g0_11:51:271
94832470sleep0121650irq/29-eth0_g0_09:36:110
5072994715cyclictest15681-21taskset07:46:361
5072994715cyclictest15681-21taskset07:46:361
5072994712cyclictest319132sleep108:54:211
121650470irq/29-eth0_g0_507299cyclictest10:22:371
121470ksoftirqd/1121750irq/30-eth0_g0_10:12:090
121470ksoftirqd/1121650irq/29-eth0_g0_09:19:500
117450470irq/72-mmc013-21kworker/0:111:36:500
5072994619cyclictest19309-21runrttasks10:16:161
5072994619cyclictest14349-21runrttasks09:55:421
5072994619cyclictest14349-21runrttasks09:55:421
5072994617cyclictest201872sleep110:17:141
5072994616cyclictest30341-21/usr/sbin/munin08:46:391
5072994616cyclictest22009-21df_inode10:26:291
5072994616cyclictest18205-21sendmail_mailqu12:21:361
5072994616cyclictest17242-21memory10:06:311
5072994612cyclictest4605-21/usr/sbin/munin11:26:341
5072994610cyclictest25384-21chrt10:40:371
5072994610cyclictest11695-21/usr/sbin/munin11:56:291
121650460irq/29-eth0_g0_13-21kworker/0:111:04:040
121460ksoftirqd/1121750irq/30-eth0_g0_12:11:161
121460ksoftirqd/1121750irq/30-eth0_g0_12:11:161
121460ksoftirqd/1121750irq/30-eth0_g0_11:19:561
121460ksoftirqd/1121750irq/30-eth0_g0_11:13:070
121460ksoftirqd/1121750irq/30-eth0_g0_11:10:170
121460ksoftirqd/1121750irq/30-eth0_g0_10:08:560
121460ksoftirqd/1121650irq/29-eth0_g0_12:08:260
121460ksoftirqd/1121650irq/29-eth0_g0_12:08:260
5072994516cyclictest15602-21runrttasks10:00:591
5072994512cyclictest9255-21ntpq07:21:341
5072994511cyclictest17178-21/usr/sbin/munin12:16:391
5072994511cyclictest16607-21/usr/sbin/munin07:51:331
5072994510cyclictest5460-21missed_timers07:06:331
121650450irq/29-eth0_g0_4505-21timerandwakeup07:01:360
121450ksoftirqd/1121750irq/30-eth0_g0_12:25:520
121450ksoftirqd/1121750irq/30-eth0_g0_11:45:510
121450ksoftirqd/1121750irq/30-eth0_g0_10:55:351
121450ksoftirqd/1121750irq/30-eth0_g0_09:30:380
5072994418cyclictest0-21swapper/108:41:541
5072994415cyclictest32565-21runrttasks11:08:251
5072994414cyclictest81572sleep109:30:011
5072994413cyclictest28372-21runrttasks08:40:591
5072994413cyclictest1219-21kworker/1:211:21:291
5072994413cyclictest1219-21kworker/1:207:41:301
5072994412cyclictest11139-21taskset07:30:281
5072994411cyclictest22518-21/usr/sbin/munin08:16:291
121650440irq/29-eth0_g0_13-21kworker/0:111:23:560
121650440irq/29-eth0_g0_13-21kworker/0:109:36:380
121440ksoftirqd/1121750irq/30-eth0_g0_12:05:051
121440ksoftirqd/1121750irq/30-eth0_g0_10:04:290
5072994316cyclictest0-21swapper/107:31:261
5072994315cyclictest184982sleep108:00:251
5072994313cyclictest23800-21uptime10:31:391
5072994313cyclictest19809-21cat08:06:161
5072994312cyclictest1219-21kworker/1:208:56:351
5072994311cyclictest1219-21kworker/1:211:11:291
121650430irq/29-eth0_g0_13-21kworker/0:111:46:560
121430ksoftirqd/1121750irq/30-eth0_g0_10:56:391
121430ksoftirqd/1121750irq/30-eth0_g0_09:25:540
121430ksoftirqd/1121750irq/30-eth0_g0_08:11:341
5072994217cyclictest13455-21runrttasks07:38:511
5072994217cyclictest0-21swapper/108:24:061
5072994214cyclictest26278-21irqstats08:31:301
5072994214cyclictest26278-21irqstats08:31:301
5072994213cyclictest30844-21/usr/sbin/munin11:01:351
5072994210cyclictest25060-21latency08:26:321
121650420irq/29-eth0_g0_13-21kworker/0:112:16:290
121650420irq/29-eth0_g0_13-21kworker/0:111:54:310
121650420irq/29-eth0_g0_13-21kworker/0:111:33:040
121650420irq/29-eth0_g0_13-21kworker/0:111:19:530
121650420irq/29-eth0_g0_13-21kworker/0:110:18:590
121650420irq/29-eth0_g0_13-21kworker/0:109:08:430
121650420irq/29-eth0_g0_12698-21latency_hist12:01:170
5072994113cyclictest3041-21seq09:07:401
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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