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2026-05-11 - 21:07

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 792 highest latencies:
System rack9slot4s (updated Mon May 11, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
95759911231065,45cyclictest9744-21aten_r4power_cu07:25:101
95749911211096,21cyclictest0-21swapper/007:25:120
95759911081070,34cyclictest31093-21ntp_states12:35:261
85262564518,29sleep10-21swapper/107:20:251
81012489409,65sleep00-21swapper/007:20:150
9574992451,239cyclictest0-21swapper/012:35:250
323172910,4sleep00-21swapper/012:40:130
311452680,4sleep031147-21idleruntime11:10:180
268152400,7sleep0957499cyclictest09:32:360
9574993717,10cyclictest3-21ksoftirqd/011:31:410
957599351,15cyclictest275532load11:00:211
957499351,22cyclictest6701-21basename10:05:180
9575993416,6cyclictest22-21ksoftirqd/109:05:291
957499345,25cyclictest12659-21smartctl08:55:180
9574993417,6cyclictest3-21ksoftirqd/010:24:470
133732341,4sleep113509-21cpuspeed_turbos11:50:121
957599339,7cyclictest11565-21gdbus08:09:221
957599339,7cyclictest11565-21gdbus08:09:211
957499338,12cyclictest21049-21cpuspeed_turbos12:10:130
957499333,24cyclictest26362-21munin-run12:25:000
9574993316,6cyclictest3-21ksoftirqd/007:38:320
957499331,10cyclictest0-21swapper/009:02:350
301512331,11sleep10-21swapper/111:06:531
203722331,9sleep00-21swapper/012:06:370
146772331,9sleep00-21swapper/011:51:070
9575993215,5cyclictest40250irq/92-i91512:32:261
957499322,17cyclictest0-21swapper/007:51:160
9574993217,5cyclictest3-21ksoftirqd/011:04:320
9574993216,6cyclictest3-21ksoftirqd/009:14:100
9574993216,5cyclictest3-21ksoftirqd/012:46:530
177822321,4sleep017805-21awk07:45:000
957599316,4cyclictest81rcu_preempt12:46:331
957599311,9cyclictest3344-21iostat08:30:201
957599311,4cyclictest81rcu_preempt12:22:251
957599311,27cyclictest0-21swapper/109:16:281
9574993121,6cyclictest11074-21/usr/sbin/munin08:50:220
9574993116,5cyclictest3-21ksoftirqd/011:27:000
9574993115,6cyclictest3-21ksoftirqd/008:24:000
9574993115,5cyclictest3-21ksoftirqd/011:41:310
9574993113,5cyclictest24062-21irqstats09:25:210
9574993112,6cyclictest30473-21munin-run11:10:000
9574993112,6cyclictest26520-21ntp_states08:05:260
9574993112,6cyclictest26520-21ntp_states08:05:260
174492311,5sleep117539-21hostname10:35:121
96262301,5sleep00-21swapper/010:13:420
957599308,8cyclictest11565-21gdbus08:54:101
957599306,4cyclictest81rcu_preempt09:03:271
957599305,5cyclictest81rcu_preempt07:54:441
957599305,4cyclictest81rcu_preempt10:26:531
957599305,4cyclictest81rcu_preempt10:02:071
957599301,5cyclictest81rcu_preempt11:28:461
9575993013,5cyclictest22-21ksoftirqd/107:56:061
9575993012,6cyclictest2401-21NetworkManager12:10:021
957599301,16cyclictest29936-21ntp_states09:40:241
957499302,16cyclictest0-21swapper/008:04:000
9574993012,5cyclictest4200-21irqstats12:50:200
957499301,16cyclictest30981-21/usr/sbin/munin09:45:250
9574993011,6cyclictest19718-21latency_hist07:50:010
957499301,16cyclictest17741-21/usr/sbin/munin10:35:150
957499301,13cyclictest6349-21turbostat08:40:000
9574993010,16cyclictest41842chrt08:32:060
63332301,4sleep16353-21pidof08:40:011
318412301,3sleep10-21swapper/111:10:311
305172301,5sleep00-21swapper/009:41:550
20702301,5sleep00-21swapper/009:54:270
206642301,5sleep10-21swapper/110:40:551
957599295,4cyclictest81rcu_preempt07:46:441
957599294,4cyclictest81rcu_preempt07:40:081
957599294,14cyclictest40250irq/92-i91508:25:191
957599293,4cyclictest81rcu_preempt08:20:591
957599293,4cyclictest81rcu_preempt07:37:021
957599292,23cyclictest0-21swapper/110:45:111
957599291,4cyclictest40250irq/92-i91511:43:081
9575992911,5cyclictest81rcu_preempt10:30:121
957599291,15cyclictest229462sleep109:21:201
957599290,4cyclictest81rcu_preempt10:57:401
957499294,18cyclictest8367-21memory11:35:220
957499294,18cyclictest1353-21iostat_ios08:25:200
9574992914,5cyclictest3-21ksoftirqd/012:03:280
9574992910,7cyclictest30660-21grep08:15:270
55932291,5sleep00-21swapper/010:00:460
38022291,5sleep00-21swapper/009:56:520
266352291,5sleep10-21swapper/109:30:441
241752291,5sleep10-21swapper/112:17:081
230262291,5sleep00-21swapper/007:55:590
210682291,5sleep00-21swapper/009:16:330
14742291,5sleep10-21swapper/111:17:081
957599285,3cyclictest81rcu_preempt07:33:441
957599284,18cyclictest27861-21diskstats08:10:161
957599283,4cyclictest81rcu_preempt10:09:191
957599282,8cyclictest18824-21latency_hist12:05:011
957599282,4cyclictest81rcu_preempt09:48:131
957599282,23cyclictest0-21swapper/109:39:261
957599282,11cyclictest15810-21iostat_ios11:55:201
9575992812,13cyclictest22-21ksoftirqd/110:53:011
957499285,9cyclictest2225-21dbus-daemon08:10:300
957499284,12cyclictest0-21swapper/008:45:120
957499283,20cyclictest16171-21iostat_ios10:30:200
9574992813,5cyclictest3-21ksoftirqd/011:22:360
957499281,15cyclictest0-21swapper/007:30:210
957499281,14cyclictest21666-21/usr/sbin/munin10:45:170
9574992810,5cyclictest7211-21memory08:40:220
86412281,5sleep10-21swapper/110:10:231
37682281,5sleep10-21swapper/109:56:311
299002281,5sleep00-21swapper/012:33:000
229632281,5sleep00-21swapper/009:21:310
152272281,5sleep00-21swapper/010:28:050
136622281,5sleep10-21swapper/108:57:521
115952281,5sleep00-21swapper/010:19:360
113372281,5sleep10-21swapper/110:16:581
957599275,4cyclictest81rcu_preempt12:05:371
957599274,14cyclictest0-21swapper/111:48:431
957599274,14cyclictest0-21swapper/111:48:421
957599273,4cyclictest81rcu_preempt10:20:501
957599271,4cyclictest81rcu_preempt08:04:071
957599270,4cyclictest81rcu_preempt11:35:551
957499279,6cyclictest26843-21tune2fs12:25:150
957499279,5cyclictest24085-21mailstats10:50:280
957499271,23cyclictest0-21swapper/011:19:030
957499271,13cyclictest27471-21ls09:35:120
957499271,12cyclictest23562-21ntp_states12:15:240
957499271,12cyclictest16354-21fschecks_time09:05:170
957499271,12cyclictest11993-21ls11:45:180
957499271,12cyclictest11993-21ls11:45:180
81662271,5sleep10-21swapper/108:44:211
71392271,5sleep10-21swapper/111:31:061
3882271,5sleep10-21swapper/109:50:101
35252271,5sleep10-21swapper/111:22:331
309342271,5sleep10-21swapper/108:17:451
255712271,3sleep025575-21uname10:55:210
247772271,6sleep10-21swapper/109:25:541
10722271,5sleep10-21swapper/112:41:301
957599269,13cyclictest17942-21cpu09:10:131
957599265,4cyclictest81rcu_preempt08:45:471
957499261,13cyclictest19337-21runrttasks10:40:040
957499261,13cyclictest11565-21gdbus11:56:140
280382251,5sleep10-21swapper/112:28:061
957599249,11cyclictest0-21swapper/112:50:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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