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2026-08-18 - 16:55

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

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 376 highest latencies:
System rack9slot4s (updated Tue Aug 18, 2026 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4189912451191,47cyclictest566-21aten_r4power_cu07:25:111
4179911301099,22cyclictest0-21swapper/007:25:100
326792562519,29sleep10-21swapper/107:23:281
326092512465,32sleep00-21swapper/007:22:440
41799241208,28cyclictest0-21swapper/008:05:000
277402580,8sleep041799cyclictest12:50:250
86872530,5sleep041799cyclictest10:35:150
244512450,8sleep141899cyclictest11:15:271
41899441,38cyclictest16559-21sed08:05:001
41899375,6cyclictest22-21ksoftirqd/110:35:131
418993717,4cyclictest22-21ksoftirqd/109:10:271
418993715,5cyclictest22-21ksoftirqd/108:29:041
417993715,6cyclictest25391-21wget11:20:130
41899362,6cyclictest22-21ksoftirqd/108:40:161
41899362,4cyclictest22-21ksoftirqd/109:25:311
41899362,4cyclictest22-21ksoftirqd/109:15:181
41899362,4cyclictest22-21ksoftirqd/109:15:181
41899361,6cyclictest22-21ksoftirqd/109:45:171
41899361,5cyclictest22-21ksoftirqd/111:45:281
41899361,5cyclictest22-21ksoftirqd/109:30:231
41899361,4cyclictest81rcu_preempt10:50:151
41799367,14cyclictest11565-21gdbus11:04:570
417993627,6cyclictest11880-21grep09:15:320
417993627,6cyclictest11880-21grep09:15:310
417993619,6cyclictest3-21ksoftirqd/010:06:440
41799361,4cyclictest81rcu_preempt09:45:120
417993611,13cyclictest81rcu_preempt09:50:080
81792351,4sleep18301-21users07:40:291
41899358,4cyclictest81rcu_preempt12:45:201
41899351,6cyclictest22-21ksoftirqd/108:20:271
41899351,16cyclictest0-21swapper/110:06:431
41799359,13cyclictest890-21hddtemp_smartct11:40:160
41799352,19cyclictest19372-21/usr/sbin/munin08:10:250
41799351,9cyclictest19884-21latency_hist09:40:000
41799351,20cyclictest22185-21/usr/sbin/munin12:35:270
41899344,4cyclictest81rcu_preempt09:50:261
41899342,4cyclictest22-21ksoftirqd/112:05:121
41899342,4cyclictest22-21ksoftirqd/107:50:121
418993424,6cyclictest32092-21/usr/sbin/munin10:10:231
418993415,4cyclictest22-21ksoftirqd/112:44:411
41899341,4cyclictest22-21ksoftirqd/112:25:121
41899341,4cyclictest22-21ksoftirqd/112:00:131
41899341,4cyclictest22-21ksoftirqd/111:55:181
41899341,4cyclictest22-21ksoftirqd/109:00:171
41899341,4cyclictest22-21ksoftirqd/108:05:131
41899341,4cyclictest22-21ksoftirqd/107:55:161
418993412,5cyclictest22-21ksoftirqd/110:02:581
418993412,5cyclictest22-21ksoftirqd/110:02:571
41799347,4cyclictest81rcu_preempt11:56:510
417993418,6cyclictest3-21ksoftirqd/010:00:130
417993418,6cyclictest3-21ksoftirqd/010:00:120
417993417,5cyclictest3-21ksoftirqd/008:26:360
41799341,21cyclictest16927-21/usr/sbin/munin10:55:280
41799341,20cyclictest9514-21taskset07:45:200
41899331,3cyclictest22-21ksoftirqd/108:15:151
41799331,21cyclictest18314-21/usr/sbin/munin12:25:260
41899329,4cyclictest81rcu_preempt08:30:121
41899329,3cyclictest81rcu_preempt10:29:501
418993216,4cyclictest22-21ksoftirqd/109:58:141
418993213,5cyclictest22-21ksoftirqd/108:10:161
418993212,7cyclictest3286-21runrttasks10:16:351
41799324,24cyclictest21772-21cut11:10:120
417993218,8cyclictest5437-21diskstats07:35:150
417993217,4cyclictest3-21ksoftirqd/011:06:550
417993213,11cyclictest0-21swapper/008:47:320
41799321,17cyclictest13885-21cron10:50:000
211982322,4sleep10-21swapper/112:35:101
41899319,4cyclictest81rcu_preempt08:45:281
41899318,4cyclictest81rcu_preempt08:55:151
41899317,4cyclictest81rcu_preempt09:40:121
418993117,8cyclictest6815-21diskstats10:30:161
418993111,16cyclictest22-21ksoftirqd/110:25:011
418993110,8cyclictest22-21ksoftirqd/109:20:191
41799313,15cyclictest0-21swapper/008:31:010
417993118,4cyclictest3-21ksoftirqd/009:10:490
417993117,8cyclictest25179-21munin-run11:20:010
417993112,6cyclictest8304-21users07:40:300
41799311,26cyclictest5404-21wc11:50:290
417993112,6cyclictest2881-21hddtemp_smartct11:45:170
417993112,5cyclictest74822cut09:05:220
417993111,9cyclictest3-21ksoftirqd/010:32:530
41799311,17cyclictest0-21swapper/010:40:140
41799311,17cyclictest0-21swapper/010:40:140
41799311,12cyclictest0-21swapper/009:29:410
41799311,11cyclictest0-21swapper/008:43:120
417993110,6cyclictest15056-21python10:50:260
417993110,5cyclictest0-21swapper/009:42:530
41899308,8cyclictest18819-21mailstats11:00:281
41899308,4cyclictest81rcu_preempt09:05:121
41899307,4cyclictest81rcu_preempt10:55:241
41899307,4cyclictest81rcu_preempt10:45:131
41899307,4cyclictest81rcu_preempt08:50:121
41899307,4cyclictest81rcu_preempt07:45:131
41899307,4cyclictest81rcu_preempt07:30:161
41899304,4cyclictest81rcu_preempt07:36:401
418993014,4cyclictest22-21ksoftirqd/112:50:201
41899301,11cyclictest22-21ksoftirqd/111:25:241
41899301,10cyclictest22-21ksoftirqd/111:43:431
41899300,4cyclictest81rcu_preempt11:33:341
41799309,8cyclictest0-21swapper/010:16:350
417993014,6cyclictest3-21ksoftirqd/012:48:260
41799301,26cyclictest0-21swapper/012:15:110
48662291,5sleep00-21swapper/007:34:180
41899298,4cyclictest81rcu_preempt11:35:191
41899297,4cyclictest81rcu_preempt12:10:181
41899297,4cyclictest81rcu_preempt11:20:161
41899295,3cyclictest81rcu_preempt11:13:001
41899295,3cyclictest40250irq/92-i91511:50:181
41899294,4cyclictest81rcu_preempt12:18:191
41899291,17cyclictest22-21ksoftirqd/110:40:301
41899291,17cyclictest22-21ksoftirqd/110:40:291
418992910,5cyclictest22-21ksoftirqd/112:30:271
41799294,12cyclictest2225-21dbus-daemon09:21:340
417992914,11cyclictest30389-21seq11:30:460
417992913,6cyclictest3-21ksoftirqd/008:22:020
417992912,5cyclictest20847-21perl08:15:160
41799291,24cyclictest19735-21cut12:30:160
41799291,15cyclictest5858-21/usr/sbin/munin09:00:250
417992910,9cyclictest3-21ksoftirqd/009:57:130
417992910,5cyclictest24249-21timerwakeupswit12:40:290
211622291,5sleep10-21swapper/111:07:341
113682291,5sleep00-21swapper/012:07:160
41899287,4cyclictest81rcu_preempt08:35:161
41899287,4cyclictest81rcu_preempt08:35:151
41899286,4cyclictest81rcu_preempt09:35:121
41799284,20cyclictest16518-21ls09:30:130
41799283,14cyclictest0-21swapper/007:54:500
417992812,5cyclictest3-21ksoftirqd/011:25:100
417992811,5cyclictest5247-21irqstats10:25:220
41799281,15cyclictest0-21swapper/008:35:230
41799281,15cyclictest0-21swapper/008:35:230
41799281,14cyclictest1365-21expr08:50:120
417992810,6cyclictest8645-21/usr/sbin/munin12:00:200
417992810,6cyclictest16913-21df08:05:130
169042281,5sleep00-21swapper/012:21:040
140152283,21sleep0415-21cyclictest07:56:140
41899275,18cyclictest0-21swapper/112:20:261
41799277,7cyclictest31829-21/usr/sbin/munin10:10:180
41799272,13cyclictest11857-21/usr/sbin/munin12:10:110
41799271,13cyclictest32366-21runrttasks11:36:520
417992710,5cyclictest3336-21expr08:55:140
41799261,4cyclictest81rcu_preempt10:21:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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