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2026-06-21 - 21:14

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 Sun Jun 21, 2026 12:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
311489912411222,15cyclictest2695-21snmpd07:29:111
308322728683,30sleep10-21swapper/107:22:161
308222463416,31sleep00-21swapper/007:22:090
3114799200191,6cyclictest0-21swapper/007:29:110
2132421000,7sleep13114899cyclictest08:20:231
258922890,4sleep00-21swapper/011:25:160
135272850,5sleep113525-21ntp_states09:25:241
325442520,4sleep03114799cyclictest10:15:280
293022440,7sleep10-21swapper/108:40:281
3114899412,24cyclictest137450irq/90-eth008:25:271
31148994114,6cyclictest10672hwlatdetect11:45:161
31147994017,4cyclictest111rcuc/011:45:170
3114899399,5cyclictest22-21ksoftirqd/110:57:521
3114899391,7cyclictest22-21ksoftirqd/109:55:111
3114899381,7cyclictest22-21ksoftirqd/111:25:151
31147993823,4cyclictest3-21ksoftirqd/009:45:110
31147993821,6cyclictest3-21ksoftirqd/008:15:380
3114899371,7cyclictest22-21ksoftirqd/112:35:251
3114899371,7cyclictest22-21ksoftirqd/111:35:111
3114899371,7cyclictest22-21ksoftirqd/111:00:111
3114899371,7cyclictest22-21ksoftirqd/110:40:291
3114899371,7cyclictest22-21ksoftirqd/110:35:191
3114899371,7cyclictest22-21ksoftirqd/109:50:241
3114899371,7cyclictest22-21ksoftirqd/109:20:111
3114899371,7cyclictest22-21ksoftirqd/109:00:131
3114899371,7cyclictest22-21ksoftirqd/108:35:221
3114899371,7cyclictest22-21ksoftirqd/108:15:131
3114899371,6cyclictest22-21ksoftirqd/112:45:171
3114899371,6cyclictest22-21ksoftirqd/109:10:141
31148993710,4cyclictest22-21ksoftirqd/108:30:271
31147993717,4cyclictest40250irq/92-i91508:50:210
3114799371,4cyclictest81rcu_preempt09:20:000
3114899361,7cyclictest22-21ksoftirqd/112:05:131
3114899361,7cyclictest22-21ksoftirqd/109:15:261
3114899361,7cyclictest22-21ksoftirqd/109:05:131
3114899361,6cyclictest22-21ksoftirqd/112:20:121
3114899361,6cyclictest22-21ksoftirqd/112:00:151
3114899361,6cyclictest22-21ksoftirqd/111:30:171
3114899361,6cyclictest22-21ksoftirqd/111:15:241
3114899361,6cyclictest22-21ksoftirqd/111:10:131
3114899361,6cyclictest22-21ksoftirqd/110:15:221
3114899361,6cyclictest22-21ksoftirqd/110:10:141
3114899361,6cyclictest22-21ksoftirqd/108:55:121
3114899361,6cyclictest22-21ksoftirqd/107:35:291
31147993621,4cyclictest3-21ksoftirqd/008:25:260
31147993619,6cyclictest3-21ksoftirqd/007:58:330
179752361,5sleep118080-21wget11:05:131
13732361,31sleep11375-21/usr/sbin/munin07:30:121
3114899351,4cyclictest81rcu_preempt10:00:251
3114899351,4cyclictest81rcu_preempt08:45:261
31148993514,4cyclictest81rcu_preempt08:10:221
31148993513,4cyclictest81rcu_preempt11:40:241
31148993513,4cyclictest81rcu_preempt11:40:241
31148993513,4cyclictest81rcu_preempt10:30:221
3114899351,31cyclictest8902-21sh07:50:011
31148993512,4cyclictest81rcu_preempt12:10:221
31148993512,10cyclictest22-21ksoftirqd/109:45:261
31147993522,4cyclictest3-21ksoftirqd/010:05:000
31147993520,5cyclictest3-21ksoftirqd/012:21:470
31147993518,6cyclictest3-21ksoftirqd/012:38:120
31147993514,6cyclictest3-21ksoftirqd/011:23:330
170332351,4sleep117038-21iostat_ios09:35:181
3114899341,6cyclictest22-21ksoftirqd/109:40:151
3114799346,12cyclictest12034-21unixbench_singl09:20:280
3114899338,4cyclictest81rcu_preempt12:40:271
3114899335,5cyclictest81rcu_preempt10:50:141
3114899332,6cyclictest22-21ksoftirqd/108:00:341
3114899331,9cyclictest16333-21irqstats12:25:201
3114899331,5cyclictest22-21ksoftirqd/111:53:411
31148993311,4cyclictest81rcu_preempt07:50:281
3114799338,13cyclictest2225-21dbus-daemon11:56:540
31147993318,5cyclictest3-21ksoftirqd/010:59:150
31147993318,4cyclictest3-21ksoftirqd/009:00:230
31147993317,6cyclictest3-21ksoftirqd/008:41:440
3114799331,17cyclictest6883-21ssh09:10:000
3114799331,16cyclictest81rcu_preempt08:50:000
3114899325,14cyclictest2567-21taskset10:23:531
31148993226,3cyclictest40250irq/92-i91510:45:241
3114899322,15cyclictest40250irq/92-i91510:09:221
31148993217,4cyclictest22-21ksoftirqd/108:55:011
31148993216,6cyclictest22-21ksoftirqd/107:55:211
31148993213,9cyclictest22-21ksoftirqd/111:21:151
31148993213,8cyclictest22-21ksoftirqd/112:32:451
31147993222,6cyclictest2872-21fschecks_count11:50:160
3114799322,15cyclictest6516-21munin-run10:35:000
31147993218,4cyclictest3-21ksoftirqd/007:52:130
31147993217,5cyclictest3-21ksoftirqd/009:12:500
31147993217,5cyclictest3-21ksoftirqd/008:11:310
31147993217,4cyclictest3-21ksoftirqd/011:44:170
31147993217,4cyclictest3-21ksoftirqd/011:44:160
3114799313,13cyclictest8621-21cut10:40:120
31147993118,4cyclictest3-21ksoftirqd/008:01:360
31147993117,4cyclictest40250irq/92-i91509:50:230
31147993112,6cyclictest6916-21iostat12:00:180
134922311,5sleep00-21swapper/012:18:090
58332301,5sleep00-21swapper/007:40:180
3114899302,4cyclictest81rcu_preempt12:17:221
3114899301,4cyclictest81rcu_preempt09:30:161
31148993011,4cyclictest81rcu_preempt11:55:091
3114899301,11cyclictest22-21ksoftirqd/108:05:131
3114799308,13cyclictest40250irq/92-i91510:51:080
3114799307,12cyclictest31145-21cyclictest12:40:220
31147993015,5cyclictest3-21ksoftirqd/010:29:120
31147993015,5cyclictest3-21ksoftirqd/008:56:180
3114799301,4cyclictest3-21ksoftirqd/011:03:270
31147993014,6cyclictest3-21ksoftirqd/011:12:580
31147993012,5cyclictest1103-21iostat_ios07:30:040
3114799301,15cyclictest0-21swapper/008:25:010
232702301,5sleep00-21swapper/012:45:050
85812291,5sleep00-21swapper/007:46:490
3114899292,11cyclictest3585-21cat10:25:191
31148992914,4cyclictest22-21ksoftirqd/112:53:211
31148992912,5cyclictest22-21ksoftirqd/107:40:281
3114799294,4cyclictest40250irq/92-i91507:35:270
3114799294,12cyclictest17606-21/usr/sbin/munin12:30:140
31147992912,4cyclictest2100-21timerwakeupswit10:20:280
31147992911,6cyclictest18989-21python11:05:280
31147992911,5cyclictest7362-21memory10:35:210
307742291,5sleep00-21swapper/011:38:090
275542291,5sleep00-21swapper/008:36:240
255972291,5sleep00-21swapper/008:30:340
3114799289,7cyclictest81rcu_preempt12:29:590
3114799287,17cyclictest2225-21dbus-daemon10:10:380
3114799286,10cyclictest0-21swapper/010:07:140
3114799283,14cyclictest16668-21cstates09:35:110
31147992815,4cyclictest3-21ksoftirqd/009:59:530
31147992813,5cyclictest3-21ksoftirqd/009:33:530
31147992812,5cyclictest3-21ksoftirqd/010:46:140
3114799281,11cyclictest14937-21basename08:05:120
31147992810,6cyclictest11637-21runrttasks12:13:220
31147992810,5cyclictest25750-21iostat_ios12:50:180
3114799272,5cyclictest81rcu_preempt09:26:410
3114799271,23cyclictest40250irq/92-i91512:05:190
3114799268,6cyclictest28198-21ntp_states11:30:220
3114799251,7cyclictest18986-21latency09:40:210
3114799251,15cyclictest0-21swapper/011:15:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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