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2026-07-05 - 20:33

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 all highest latencies:
System rack9slot4s (updated Sun Jul 05, 2026 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
66429911541106,29cyclictest11107-21wc07:35:011
65002649602,31sleep10-21swapper/107:24:041
62982616519,31sleep00-21swapper/007:21:590
1249221060,4sleep00-21swapper/010:30:010
1249221060,4sleep00-21swapper/010:30:000
6642995317,6cyclictest22-21ksoftirqd/109:25:141
6642995216,5cyclictest22-21ksoftirqd/108:05:221
6642995116,6cyclictest22-21ksoftirqd/111:10:181
6642995115,5cyclictest22-21ksoftirqd/111:45:231
6642995114,6cyclictest22-21ksoftirqd/107:40:191
6642995016,6cyclictest22-21ksoftirqd/110:50:151
6642995016,6cyclictest22-21ksoftirqd/109:45:211
6642995015,5cyclictest22-21ksoftirqd/112:30:121
6642995015,5cyclictest22-21ksoftirqd/107:50:091
6642995015,5cyclictest22-21ksoftirqd/107:25:151
6642994915,6cyclictest22-21ksoftirqd/111:35:131
6642994815,6cyclictest22-21ksoftirqd/110:55:121
6642994815,6cyclictest22-21ksoftirqd/108:10:111
6642994813,6cyclictest22-21ksoftirqd/109:20:201
6642994714,6cyclictest22-21ksoftirqd/111:15:111
6642994711,6cyclictest22-21ksoftirqd/109:30:131
6642994613,6cyclictest22-21ksoftirqd/111:20:111
6642994613,5cyclictest22-21ksoftirqd/107:45:111
6642994514,10cyclictest22-21ksoftirqd/112:05:161
6642994512,6cyclictest22-21ksoftirqd/109:40:101
6642994511,5cyclictest22-21ksoftirqd/112:15:151
6642994425,4cyclictest22-21ksoftirqd/107:35:171
6642994423,4cyclictest22-21ksoftirqd/109:35:111
6642994413,5cyclictest22-21ksoftirqd/109:50:111
6642994412,6cyclictest22-21ksoftirqd/111:25:141
6642994412,5cyclictest22-21ksoftirqd/108:25:101
6642994325,4cyclictest22-21ksoftirqd/107:55:151
6642994324,4cyclictest22-21ksoftirqd/111:30:111
6642994324,3cyclictest22-21ksoftirqd/111:50:251
6642994311,5cyclictest22-21ksoftirqd/112:01:001
6642994310,6cyclictest22-21ksoftirqd/108:04:551
6642994310,5cyclictest22-21ksoftirqd/112:48:061
664299429,6cyclictest22-21ksoftirqd/112:10:281
664299429,6cyclictest22-21ksoftirqd/110:05:551
664299429,6cyclictest22-21ksoftirqd/110:03:231
664299429,6cyclictest22-21ksoftirqd/109:58:071
6642994224,4cyclictest22-21ksoftirqd/109:05:221
6642994224,4cyclictest22-21ksoftirqd/108:15:111
6642994223,4cyclictest22-21ksoftirqd/111:05:181
6642994223,4cyclictest22-21ksoftirqd/111:05:181
6642994222,4cyclictest22-21ksoftirqd/110:20:121
6642994221,4cyclictest22-21ksoftirqd/112:25:131
6642994220,4cyclictest22-21ksoftirqd/110:25:151
6642994220,4cyclictest22-21ksoftirqd/110:25:141
6642994220,4cyclictest22-21ksoftirqd/110:15:121
6642994220,4cyclictest22-21ksoftirqd/108:35:001
6642994219,4cyclictest22-21ksoftirqd/109:00:121
6642994214,10cyclictest22-21ksoftirqd/110:45:131
6642994211,5cyclictest22-21ksoftirqd/111:40:451
664299419,6cyclictest22-21ksoftirqd/108:45:161
664299415,6cyclictest22-21ksoftirqd/112:35:101
6642994121,4cyclictest22-21ksoftirqd/108:35:221
664299409,6cyclictest22-21ksoftirqd/112:20:111
6642994024,4cyclictest22-21ksoftirqd/112:50:111
6642994020,3cyclictest22-21ksoftirqd/108:40:131
6642994019,4cyclictest22-21ksoftirqd/109:15:191
6642994019,4cyclictest22-21ksoftirqd/108:55:101
6642994019,4cyclictest22-21ksoftirqd/108:55:101
6642994018,4cyclictest22-21ksoftirqd/110:44:411
6642994018,4cyclictest22-21ksoftirqd/108:50:111
6642994010,6cyclictest22-21ksoftirqd/110:10:131
6642994010,6cyclictest22-21ksoftirqd/108:20:121
664299398,3cyclictest22-21ksoftirqd/111:03:291
6642993920,4cyclictest22-21ksoftirqd/110:35:151
6642993823,4cyclictest22-21ksoftirqd/112:40:121
6642993819,4cyclictest22-21ksoftirqd/109:10:111
6642993723,4cyclictest22-21ksoftirqd/110:30:151
6642993723,3cyclictest22-21ksoftirqd/111:55:161
664199351,13cyclictest0-21swapper/007:39:540
165432351,5sleep016624-21/usr/sbin/munin12:05:180
297272341,4sleep029832-21df11:15:130
25012341,9sleep00-21swapper/011:28:540
664199332,11cyclictest18378-21aten_r4power_vo10:45:120
6641993314,5cyclictest25637-21cron11:05:000
664199331,20cyclictest2225-21dbus-daemon10:39:070
664199331,20cyclictest2076-21ntp_states10:00:250
664199331,10cyclictest81rcu_preempt09:31:090
664199324,14cyclictest11565-21gdbus10:15:160
664199322,13cyclictest2079-21hddtemp_smartct08:35:170
64122321,27sleep011565-21gdbus10:10:570
664199312,17cyclictest0-21swapper/011:10:290
664199311,4cyclictest81rcu_preempt12:47:400
664199311,4cyclictest81rcu_preempt08:24:540
6641993113,5cyclictest27332-21ntp_states08:15:230
289072311,5sleep00-21swapper/012:38:500
664199304,4cyclictest81rcu_preempt10:40:280
664199304,4cyclictest81rcu_preempt09:46:410
664199303,6cyclictest71462hostname11:40:170
664199302,16cyclictest0-21swapper/008:27:360
664199302,13cyclictest11565-21gdbus08:06:360
664199302,10cyclictest0-21swapper/008:40:290
6641993018,7cyclictest27523-21latency_hist11:10:000
6641993018,7cyclictest27523-21latency_hist11:09:590
6641993016,8cyclictest1555-21python12:50:290
664199301,4cyclictest81rcu_preempt09:21:360
664199301,4cyclictest81rcu_preempt08:14:290
664199301,4cyclictest81rcu_preempt07:43:080
6641993013,5cyclictest9190-21munin-node07:30:040
6641993012,5cyclictest15700-21ntp_states09:10:250
6641993011,7cyclictest0-21swapper/012:11:350
6641993011,6cyclictest0-21swapper/011:55:500
6641993011,5cyclictest3606-21sed11:30:220
6641993010,6cyclictest27874-21cron09:45:010
6641993010,5cyclictest21516-21munin-run12:20:000
233202301,5sleep00-21swapper/012:24:130
139252301,5sleep00-21swapper/010:30:420
664199299,7cyclictest0-21swapper/012:29:410
664199292,15cyclictest0-21swapper/008:47:070
664199292,13cyclictest9346-21ntp_states11:45:250
664199292,13cyclictest7069-21df_inode07:25:140
664199291,4cyclictest81rcu_preempt09:50:210
664199291,4cyclictest81rcu_preempt07:50:020
6641992911,6cyclictest10853-21perl11:50:150
664199291,14cyclictest21483-21irqstats08:00:210
256332291,5sleep00-21swapper/009:36:220
236252291,5sleep00-21swapper/010:58:520
156442291,5sleep00-21swapper/012:02:380
12602291,5sleep00-21swapper/008:33:310
104602291,5sleep00-21swapper/010:23:440
9332281,5sleep00-21swapper/009:58:570
664199289,6cyclictest16122-21sort07:45:280
664199282,13cyclictest20436-21df10:50:130
664199282,12cyclictest32762-21taskset11:20:520
664199281,14cyclictest18400-21chrt09:19:230
664199281,12cyclictest19583-21irqstats07:55:200
6641992810,5cyclictest9963-21chrt08:55:220
6641992810,5cyclictest9963-21chrt08:55:210
6641992810,5cyclictest25718-21df12:30:120
61222281,5sleep00-21swapper/011:36:380
37192281,5sleep00-21swapper/010:05:180
124532281,5sleep00-21swapper/009:01:080
88102271,5sleep00-21swapper/008:52:290
664199271,13cyclictest29546-21fschecks_count12:40:160
6641992710,5cyclictest13757-21/usr/sbin/munin09:05:240
664199251,12cyclictest21844-21cron09:26:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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