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2026-08-02 - 19:34

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #3

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 100 highest latencies:
System rack5slot3s.osadl.org (updated Sun Aug 02, 2026 12:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
129502240163,23sleep10-21swapper/107:07:481
129042231162,57sleep20-21swapper/207:07:122
129622204167,25sleep30-21swapper/307:07:573
128672201165,24sleep00-21swapper/007:06:420
81721680,5sleep31322499cyclictest09:05:203
132179910092,2cyclictest0-21swapper/208:33:472
13217998582,2cyclictest0-21swapper/208:19:582
13217996461,2cyclictest0-21swapper/210:26:172
13217996461,2cyclictest0-21swapper/210:26:172
158542570,3sleep115858-21unixbench-2d12:05:251
166262470,1sleep10-21swapper/107:15:141
13212994410,26cyclictest2139-21grep10:20:271
13212993810,18cyclictest12001-21ntp_states09:30:211
13212993714,19cyclictest12573-21/usr/sbin/munin08:20:141
1321299368,19cyclictest18916-21timerandwakeup09:45:251
1321299366,13cyclictest87550irq/128-enp1s0-10:05:251
13212993615,9cyclictest32262-21/usr/sbin/munin10:15:261
13212993513,19cyclictest15387-21munin-run07:15:011
13212993512,14cyclictest7090-21grep11:45:261
13212993416,15cyclictest24939-21irqstats10:00:181
13212993414,11cyclictest13842-21cpuspeed_turbos10:50:141
13212993413,12cyclictest4024-21sensors_temp10:25:251
13212993413,12cyclictest4024-21sensors_temp10:25:251
13212993411,15cyclictest7177-21cpu10:35:131
13212993410,21cyclictest28016-21ntp_states11:20:201
1321299337,11cyclictest0-21swapper/111:05:161
13212993315,15cyclictest5352-21munin-run11:45:011
13212993310,20cyclictest18972-21kernelversion11:00:181
1322499320,17cyclictest0-21swapper/311:14:163
1321299325,16cyclictest0-21swapper/111:50:301
1321299322,19cyclictest89250irq/135-enp2s0-07:43:391
13212993215,14cyclictest14051-21memory09:35:181
13212993213,16cyclictest6098-21grep10:30:231
13212993210,18cyclictest17471-21sed10:55:251
1322499310,23cyclictest0-21swapper/312:29:563
13212993115,13cyclictest12225-21hddtemp_smartct10:45:161
13212993114,14cyclictest17609-21nfs4_client12:10:221
13212993112,7cyclictest2147-21/usr/sbin/munin09:10:261
13212993111,17cyclictest827-21runrttasks09:25:171
13212993110,12cyclictest523-21hddtemp_smartct09:05:171
13212993110,10cyclictest19118-21/usr/sbin/munin08:35:201
1322499301,17cyclictest0-21swapper/309:35:163
1321299309,18cyclictest12391-21sort08:20:021
1321299309,13cyclictest11321-21latency_hist10:45:021
1321299306,7cyclictest29697-21/usr/sbin/munin10:10:231
1321299306,15cyclictest0-21swapper/108:00:191
13212993015,4cyclictest27918-21diskstats12:35:131
13212993015,12cyclictest23505-21/usr/sbin/munin08:45:131
13212993013,14cyclictest20480-21perf07:25:011
1322499291,11cyclictest0-21swapper/310:36:323
1322499290,11cyclictest0-21swapper/309:42:553
1321299299,8cyclictest27906-21/usr/sbin/munin08:55:171
1321299299,5cyclictest25672-21/usr/sbin/munin11:15:191
1321299299,17cyclictest15206-21grep08:25:171
1321299298,18cyclictest6321-21perf09:20:011
1321299298,18cyclictest6321-21perf09:20:001
1321299298,12cyclictest29482-21/usr/sbin/munin07:45:171
13212992921,5cyclictest32606-21smart_sda11:30:241
13212992920,6cyclictest22994-21ntp_states09:55:231
13212992915,11cyclictest23513-21df12:25:151
13212992914,13cyclictest3168-21awk11:40:011
13212992912,14cyclictest22746-21cat07:30:011
13212992912,14cyclictest21686-21cat09:54:561
13212992911,15cyclictest11953-21idleruntime-cro12:00:021
13212992911,10cyclictest29210-21grep11:25:121
13212992910,16cyclictest17304-21latency_hist09:45:011
162262280,4sleep2311ktimersoftd/209:40:192
1322499280,9cyclictest0-21swapper/308:25:263
1321299287,7cyclictest0-21swapper/111:10:121
13212992813,12cyclictest6648-21grep09:20:131
13212992811,9cyclictest19843-21ntp_offset12:15:231
1322499271,18cyclictest0-21swapper/308:33:433
1322499271,18cyclictest0-21swapper/307:47:553
1322499270,9cyclictest0-21swapper/312:04:393
1322499270,19cyclictest0-21swapper/312:12:593
1322499270,17cyclictest0-21swapper/309:26:073
1322499270,11cyclictest0-21swapper/310:43:403
1321299279,15cyclictest26893-21taskset07:38:051
1321299279,15cyclictest21033-21cpu12:20:131
1321299277,17cyclictest31748-21wc07:50:141
1321299277,13cyclictest0-21swapper/107:55:161
1321299276,10cyclictest12266-21cpuspeed_turbos12:00:141
13212992718,6cyclictest6999-21ntp_states08:05:271
13212992718,6cyclictest21667-21/usr/sbin/munin08:40:151
13212992718,5cyclictest26967-21smart_sda08:50:241
13212992718,5cyclictest18181-21smart_sda08:30:261
1320799270,12cyclictest6330-21idleruntime-cro09:20:000
1320799270,12cyclictest6330-21idleruntime-cro09:20:000
1320799270,12cyclictest32714-21perf10:20:010
1322499261,11cyclictest0-21swapper/307:35:213
1322499260,9cyclictest0-21swapper/308:37:593
1322499260,10cyclictest0-21swapper/312:33:563
1322499260,10cyclictest0-21swapper/312:08:393
1322499260,10cyclictest0-21swapper/309:13:273
1322499260,10cyclictest0-21swapper/308:44:143
1322499260,10cyclictest0-21swapper/307:19:233
1321799261,12cyclictest0-21swapper/208:53:002
13212992618,5cyclictest9181-21ntp_states08:10:211
13212992618,5cyclictest23239-21diskstats07:30:141
13212992617,6cyclictest25376-21/usr/sbin/munin12:30:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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