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2026-06-14 - 19:26

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 Jun 14, 2026 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
241172235164,22sleep20-21swapper/207:09:152
241172235164,22sleep20-21swapper/207:09:152
241652217146,58sleep10-21swapper/107:09:511
241652217146,58sleep10-21swapper/107:09:501
238682204165,26sleep00-21swapper/007:06:000
238682204165,26sleep00-21swapper/007:05:590
238662201165,24sleep30-21swapper/307:05:583
238662201165,24sleep30-21swapper/307:05:583
216221390,3sleep22427399cyclictest11:10:172
24273998177,3cyclictest0-21swapper/209:31:122
24273998177,3cyclictest0-21swapper/209:31:122
23992540,3sleep011-21rcuc/008:45:120
197402450,1sleep10-21swapper/110:35:261
273322420,2sleep00-21swapper/009:40:190
24278993716,5cyclictest30271-21ntp_states11:00:203
24278993711,9cyclictest827-21runrttasks09:38:373
24278993611,8cyclictest790-21in:imjournal11:50:023
309342350,4sleep07-21ksoftirqd/008:35:160
2427899358,20cyclictest14318-21pmu-power09:10:243
24278993512,9cyclictest5118-21kworker/u8:111:25:133
24278993512,14cyclictest1171-21fschecks_time09:55:163
24278993510,18cyclictest0-21swapper/310:45:123
2426899350,24cyclictest0-21swapper/109:10:011
2427899349,14cyclictest0-21swapper/309:40:133
24278993415,15cyclictest5025-40dnf07:35:223
2426899341,3cyclictest0-21swapper/108:39:451
2427899339,10cyclictest3860-21fschecks_count11:15:153
2427899338,13cyclictest27628-21/usr/sbin/munin12:10:123
2427899336,18cyclictest10905-21sed10:15:253
24278993315,10cyclictest0-21swapper/311:09:343
24278993313,11cyclictest23218-21/usr/sbin/munin12:00:243
24278993311,13cyclictest12968-21diskmemload11:32:543
24278993310,9cyclictest11614-21/usr/sbin/munin10:20:153
2427899329,6cyclictest4210-21cpuspeed_turbos12:30:103
24278993215,5cyclictest7790-21unixbench_singl12:35:253
24278993213,6cyclictest790-21in:imjournal11:15:023
24278993211,10cyclictest20836-21ntpq09:25:213
2427899319,12cyclictest16567-21cat11:45:023
24278993115,4cyclictest14883-21ntp_states10:25:233
24278993114,5cyclictest87350irq/126-enp1s0-12:25:243
24278993113,5cyclictest8565-21latency_hist09:00:023
24278993111,8cyclictest17036-21cpu08:05:143
24278993111,11cyclictest0-21swapper/312:20:263
2426899311,9cyclictest0-21swapper/108:43:491
2426899311,21cyclictest0-21swapper/109:34:251
2426899311,21cyclictest0-21swapper/109:34:251
2426899311,19cyclictest0-21swapper/112:13:011
2426899310,23cyclictest0-21swapper/110:48:051
2427899308,13cyclictest20406-21/usr/sbin/munin10:40:163
2427899308,13cyclictest20406-21/usr/sbin/munin10:40:163
24278993021,5cyclictest27704-21diskstats07:15:153
24278993017,5cyclictest12230-21/usr/sbin/munin11:35:123
24278993013,13cyclictest6868-21grep11:20:233
24278993012,7cyclictest15242-21fschecks_time08:00:163
2426899301,18cyclictest0-21swapper/107:18:211
2426899300,11cyclictest0-21swapper/108:04:541
2427899299,5cyclictest12050irq/123-ahci[0008:55:013
2427899298,8cyclictest0-21swapper/309:30:133
2427899298,8cyclictest0-21swapper/309:30:133
2427899298,8cyclictest0-21swapper/308:35:203
24278992922,4cyclictest19525-21/usr/sbin/munin08:10:143
24278992919,6cyclictest16817-21/usr/sbin/munin10:30:153
24278992916,10cyclictest3790-21/usr/sbin/munin08:45:253
24278992916,10cyclictest26310-21sshd07:13:333
24278992913,6cyclictest87350irq/126-enp1s0-11:50:153
24278992912,9cyclictest5842-21irqstats10:05:213
24278992911,14cyclictest31959-21grep09:50:233
24278992910,16cyclictest30398-21taskset09:48:083
2426899291,11cyclictest0-21swapper/107:30:171
24268992910,3cyclictest0-21swapper/108:25:381
2426899290,21cyclictest0-21swapper/112:39:291
2427899288,11cyclictest0-21swapper/307:50:223
24278992821,4cyclictest26495-21ntp_states12:05:213
24278992820,5cyclictest21719-21diskstats08:15:133
24278992820,5cyclictest21719-21diskstats08:15:133
24278992820,5cyclictest19274-21ntp_states10:35:203
24278992819,6cyclictest29230-21/usr/sbin/munin08:30:253
24278992819,6cyclictest25220-21tune2fs10:50:143
24278992819,6cyclictest12904-21cat07:55:133
24278992819,6cyclictest11364-21/usr/sbin/munin09:05:163
24278992819,5cyclictest1937-21diskstats07:30:143
24278992813,7cyclictest16204-21irqstats09:15:183
24278992812,13cyclictest21358-21df11:55:143
2426899281,9cyclictest0-21swapper/107:13:291
2426899281,10cyclictest0-21swapper/108:49:211
2426899280,22cyclictest0-21swapper/109:12:291
2426899280,13cyclictest0-21swapper/110:02:131
2426899280,12cyclictest0-21swapper/110:10:371
2427899277,8cyclictest0-21swapper/309:20:143
2427899276,7cyclictest0-21swapper/308:40:183
24278992720,4cyclictest30173-21diskstats12:15:143
24278992720,4cyclictest26845-21ntp_states08:25:223
24278992718,6cyclictest9464-21hddtemp_smartct09:00:163
24278992718,6cyclictest9246-21ntp_states07:45:213
24278992718,6cyclictest7221-21/usr/sbin/munin10:10:203
24278992718,6cyclictest6331-21diskstats07:40:143
24278992718,6cyclictest3909-21/usr/sbin/munin10:00:223
24278992718,6cyclictest27357-21/usr/sbin/munin10:55:123
2426899271,11cyclictest0-21swapper/109:15:331
2426899271,10cyclictest0-21swapper/112:06:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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