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2026-07-08 - 21:46

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 Wed Jul 08, 2026 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
240939912701235,30cyclictest26004-21start-stop-daem07:30:011
235572664619,29sleep00-21swapper/007:20:300
237692473429,29sleep10-21swapper/107:22:111
2409299189180,5cyclictest25964-21munin-run07:30:000
246252890,8sleep00-21swapper/008:50:000
59502590,8sleep02409299cyclictest12:15:280
2409299411,12cyclictest28263-21grep11:50:160
2409299382,23cyclictest0-21swapper/010:05:250
74772361,31sleep17533-21/usr/sbin/munin09:30:121
2409299361,22cyclictest4709-21mailstats09:20:270
170682361,31sleep111565-21gdbus08:30:001
24093993525,6cyclictest2988-21/usr/sbin/munin12:10:221
24093993516,6cyclictest9843-21ntp_states11:00:271
2409399345,5cyclictest81rcu_preempt11:20:261
2409399342,28cyclictest0-21swapper/109:00:261
35942331,28sleep13645-21df10:45:121
154252331,28sleep115462-21ntp_states11:15:251
284862321,27sleep128517-21anacron07:35:001
2409399321,7cyclictest81rcu_preempt10:29:011
2409399321,12cyclictest30976-21fschecks_count07:40:171
2409399321,12cyclictest30976-21fschecks_count07:40:161
215972321,4sleep121604-21iostat_ios08:40:201
246972311,26sleep124755-21fschecks_count10:15:141
2409399311,4cyclictest81rcu_preempt12:05:111
24093993113,5cyclictest118762irqstats09:40:351
2409299316,13cyclictest3642-21latency12:10:200
2409299311,5cyclictest81rcu_preempt12:40:140
2409299311,4cyclictest81rcu_preempt10:15:350
2409299311,4cyclictest81rcu_preempt07:43:060
2409299311,4cyclictest81rcu_preempt07:43:050
8472301,5sleep10-21swapper/110:36:311
8472301,5sleep10-21swapper/110:36:311
80522301,5sleep00-21swapper/012:20:310
274792301,5sleep10-21swapper/111:48:131
2409399303,4cyclictest81rcu_preempt12:00:501
2409399301,4cyclictest81rcu_preempt08:59:311
2409399301,16cyclictest4145-21tune2fs09:20:161
2409299309,5cyclictest10558-21unixbench_multi09:35:300
2409299302,25cyclictest3-21ksoftirqd/008:42:390
2409299302,16cyclictest0-21swapper/010:10:160
2409299301,5cyclictest81rcu_preempt07:55:420
24092993012,5cyclictest26901-21iostat10:20:190
24092993012,5cyclictest2013-21df_inode09:15:150
2409299301,16cyclictest31837-21cron09:07:000
2409299301,13cyclictest11355-21ntpq12:30:240
208102301,5sleep10-21swapper/108:39:551
178322301,5sleep00-21swapper/012:49:150
123822301,5sleep10-21swapper/111:07:471
113402301,5sleep10-21swapper/108:14:091
2409399297,4cyclictest81rcu_preempt12:15:051
2409399297,12cyclictest40250irq/92-i91510:10:171
2409399295,4cyclictest81rcu_preempt07:53:191
2409399294,4cyclictest81rcu_preempt09:29:371
2409399294,11cyclictest873-21sort09:10:251
2409399293,22cyclictest5313-21sed07:55:311
2409399293,13cyclictest18570-21hddtemp_smartct12:50:181
2409399292,12cyclictest7678-21munin-run08:05:001
2409299299,7cyclictest20223-21sed08:35:280
2409299299,5cyclictest15811-21unixbench_multi11:15:290
2409299296,11cyclictest29571-21proc_pri07:35:270
2409299292,14cyclictest26437-21python07:30:040
2409299292,14cyclictest19090-21python12:50:280
2409299292,13cyclictest504-21hddtemp_smartct07:45:170
2409299291,4cyclictest81rcu_preempt09:02:390
24092992912,5cyclictest24343-21df11:40:130
2409299291,15cyclictest0-21swapper/010:35:100
2409299291,15cyclictest0-21swapper/010:35:100
2409299291,14cyclictest32699-21ls12:00:290
24092992910,6cyclictest7407-21df_inode10:55:150
24092992910,5cyclictest6089-21perl09:25:160
24092992910,5cyclictest4190-21ntp_states10:45:230
223252291,5sleep10-21swapper/110:09:411
202202291,5sleep00-21swapper/010:02:160
190002290,4sleep122-21ksoftirqd/111:25:191
189112291,5sleep00-21swapper/008:34:390
16042291,5sleep10-21swapper/107:48:451
143832291,5sleep00-21swapper/011:14:050
88082281,5sleep00-21swapper/009:31:040
313592281,5sleep10-21swapper/110:30:441
31192281,5sleep10-21swapper/109:15:461
243592281,5sleep10-21swapper/108:47:311
2409399285,4cyclictest81rcu_preempt09:08:241
2409399283,4cyclictest81rcu_preempt08:30:311
2409399281,23cyclictest12056-21seq12:33:091
2409399281,14cyclictest2084-21missed_timers10:40:221
2409299289,4cyclictest0-21swapper/011:45:250
2409299284,17cyclictest845-21python09:10:240
2409299282,8cyclictest0-21swapper/008:05:550
2409299282,14cyclictest11876-21df_inode08:15:130
24092992811,5cyclictest28461-21latency_hist09:00:010
24092992811,5cyclictest17158-21df09:55:130
24092992811,5cyclictest14860-21munin-run09:50:010
2409299281,14cyclictest8925-21df12:25:130
2409299281,14cyclictest15281-21/usr/sbin/munin09:50:110
24092992810,6cyclictest22157-21/usr/sbin/munin11:35:120
24092992810,6cyclictest14912-21taskset08:22:020
24092992810,4cyclictest18421-21runrttasks11:25:100
204162281,5sleep10-21swapper/110:04:191
180772281,5sleep00-21swapper/011:23:150
156332281,5sleep10-21swapper/112:41:111
118792280,2sleep00-21swapper/009:40:360
111282281,5sleep00-21swapper/008:11:590
102642281,5sleep10-21swapper/112:29:031
91502271,5sleep10-21swapper/108:05:551
68282271,5sleep00-21swapper/010:53:480
311622271,5sleep10-21swapper/111:57:291
2409399275,8cyclictest11565-21gdbus09:35:301
2409399275,4cyclictest81rcu_preempt12:20:371
2409399274,17cyclictest15298-21diskstats09:50:141
2409399273,4cyclictest81rcu_preempt09:55:341
2409399273,19cyclictest22756-21iostat_ios11:35:181
2409399272,11cyclictest5528-21df_inode10:50:141
2409399272,10cyclictest13355-21awk12:35:251
2409399271,4cyclictest81rcu_preempt10:57:461
24093992710,14cyclictest0-21swapper/107:37:521
2409299279,6cyclictest13358-21plymouth12:35:260
2409299272,14cyclictest0-21swapper/011:00:160
24092992718,5cyclictest26606-21cat08:55:020
2409299271,13cyclictest30085-21tr10:30:090
2409299271,13cyclictest28774-21iostat10:25:190
2409299271,13cyclictest11565-21gdbus11:55:060
146302271,5sleep10-21swapper/109:47:541
130772271,5sleep10-21swapper/108:17:411
2409399267,15cyclictest0-21swapper/111:50:161
2409399262,20cyclictest0-21swapper/108:50:261
2409399262,10cyclictest13783-21diskstats08:20:131
2409399261,10cyclictest24891-21ntp_states11:40:241
24092992619,4cyclictest10050irq/91-xhci_hcd07:51:170
24092992611,5cyclictest0-21swapper/012:05:070
2409299261,13cyclictest5985-21wget08:00:100
2409299261,13cyclictest2076-21memory10:40:210
2409299261,12cyclictest20524-21ls11:30:110
2409299261,12cyclictest20524-21ls11:30:110
2409399254,4cyclictest81rcu_preempt12:45:191
2409399252,4cyclictest81rcu_preempt11:34:371
2409399252,4cyclictest81rcu_preempt11:34:371
24093992516,6cyclictest22-21ksoftirqd/110:20:011
24093992513,7cyclictest13359-21iostat_ios11:10:191
2409299251,16cyclictest0-21swapper/008:27:570
2409299251,13cyclictest12193-21runrttasks11:05:480
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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