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2026-04-22 - 02:15

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 highest latencies:
System rack9slot4s (updated Tue Apr 21, 2026 12:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
230599912231209,11cyclictest0-21swapper/107:25:071
230599912021175,22cyclictest27495-21apt-get07:35:011
217932645563,40sleep10-21swapper/107:20:171
229412530482,32sleep00-21swapper/007:24:200
2305899141119,18cyclictest0-21swapper/007:25:070
230589910885,4cyclictest27621-21sed07:35:010
13002910,9sleep12305999cyclictest11:25:281
242612800,4sleep02305899cyclictest11:15:290
288382710,4sleep0111rcuc/010:47:000
2305999617,15cyclictest3138-21ntp_states10:20:251
2305999608,21cyclictest24828-21/usr/sbin/munin10:10:231
2305999605,21cyclictest29365-21/usr/sbin/munin09:05:271
301882590,7sleep12305999cyclictest10:48:581
2305999599,15cyclictest2695-21snmpd11:59:461
2305999596,15cyclictest20188-21ssh12:18:591
2305999578,15cyclictest3303-21ssh12:00:341
2305999577,16cyclictest16267-21taskset09:27:141
2305999576,17cyclictest17958-21ssh11:10:001
2305999566,16cyclictest31095-21diskmemload12:12:181
2305999557,19cyclictest20498-21perl10:05:151
2305999557,16cyclictest12740-21runrttasks11:04:341
2305999557,15cyclictest24449-21ssh11:50:111
2305999557,14cyclictest3477-21taskset12:35:141
2305999556,16cyclictest19855-21chrt10:38:001
2305999556,16cyclictest13848-21ssh09:58:321
2305999556,15cyclictest24295-21ssh09:35:261
2305999554,14cyclictest22746-21switchtime10:40:301
2305999554,14cyclictest12872-21/usr/sbin/munin12:45:261
2305999553,19cyclictest7426-21ssh09:51:141
23059995513,18cyclictest21345-21/usr/sbin/munin12:20:131
2305999546,16cyclictest31360-21basename09:10:121
2305999546,15cyclictest2673-21sh09:46:281
2305999546,14cyclictest8847-21ssh11:33:451
2305999545,14cyclictest2695-21snmpd11:49:441
2305999545,10cyclictest29652-21/usr/sbin/munin10:15:211
2305999538,15cyclictest4209-21diskstats09:15:151
2305999538,15cyclictest4209-21diskstats09:15:141
2305999537,15cyclictest4641-21ssh10:55:271
2305999537,15cyclictest18185-21/usr/sbin/munin12:50:251
2305999536,17cyclictest8576-21ssh10:25:391
2305999536,15cyclictest10285-21df11:35:151
2305999531,22cyclictest30463-21ssh12:29:511
2305999531,22cyclictest13054-21ssh09:24:351
2305999528,15cyclictest22569-21rm09:34:231
2305999527,7cyclictest31095-21diskmemload10:34:361
2305999527,16cyclictest31396-21taskset12:30:171
2305999527,16cyclictest1582-21cat07:50:191
2305999527,15cyclictest30149-21grep07:40:201
2305999527,14cyclictest17734-21rm10:02:081
2305999526,15cyclictest8799-21ssh12:40:191
2305999526,15cyclictest25770-21cat08:55:121
2305999526,14cyclictest11152-21chrt12:09:561
2305999526,12cyclictest31725-21sh11:24:041
2305999524,16cyclictest17606-21chrt11:42:261
2305999518,14cyclictest18814-21irqstats11:10:211
2305999517,15cyclictest32236-21rm09:44:201
2305999511,17cyclictest8116-21chrt08:05:591
2305999507,15cyclictest574-21ssh10:51:051
2305999504,14cyclictest22125-21sh08:45:121
2305999501,11cyclictest22930-21/usr/sbin/munin11:15:121
2305999496,15cyclictest27831-21grep07:35:121
2305999495,15cyclictest23893-21cat08:50:111
2305999492,18cyclictest15659-21chrt08:26:071
2305999482,17cyclictest19663-21chrt08:38:501
2305999482,17cyclictest19663-21chrt08:38:501
2305999482,16cyclictest13930-21chrt08:22:391
2305899471,14cyclictest23822-21ssh12:22:130
2305999466,15cyclictest5141-21tr08:00:121
2305999465,15cyclictest11566-21smartctl08:15:281
2305999461,15cyclictest32436-21cut07:45:271
2305999457,16cyclictest3013-21/usr/sbin/munin07:55:281
301452440,3sleep041ktimersoftd/007:40:200
2305999447,17cyclictest16199-21/usr/sbin/munin08:30:301
2305999443,13cyclictest8671-21/usr/sbin/munin08:10:111
2305999430,21cyclictest27782-21runrttasks09:00:141
5182420,8sleep02305899cyclictest10:51:000
2305999376,10cyclictest20555-21iostat08:40:191
23058993711,15cyclictest0-21swapper/010:30:560
2305899365,4cyclictest81rcu_preempt12:42:120
2305899365,19cyclictest0-21swapper/011:25:130
2305899364,10cyclictest81rcu_preempt09:19:400
2305899364,10cyclictest81rcu_preempt09:19:390
23058993616,6cyclictest1383-21strings09:45:230
2305899361,15cyclictest0-21swapper/011:06:110
2305899361,13cyclictest0-21swapper/008:49:170
293362351,30sleep029349-21sh11:55:160
2305899356,4cyclictest81rcu_preempt12:08:270
2305899351,14cyclictest18640-21unixbench_multi12:50:310
19712351,4sleep01982-21ssh09:12:490
263382342,28sleep026358-21diskstats12:25:150
2305899348,5cyclictest16595-21runrttasks10:35:040
2305899342,20cyclictest881-21munin-run07:50:010
2305899342,15cyclictest31145-21ssh10:15:310
2305899341,21cyclictest3851-21cut12:35:170
2305899341,15cyclictest0-21swapper/009:04:550
2305899341,13cyclictest81rcu_preempt09:42:100
221192340,8sleep02305899cyclictest10:06:270
132442341,29sleep013255-21ssh09:57:400
322792331,28sleep032290-21sh11:24:540
2305899336,6cyclictest13589-21kernelversion12:45:210
2305899336,5cyclictest81rcu_preempt08:05:220
2305899336,4cyclictest81rcu_preempt09:39:330
2305899335,4cyclictest81rcu_preempt11:40:210
2305899333,4cyclictest81rcu_preempt10:01:490
198642330,5sleep0111rcuc/009:30:280
2305899324,4cyclictest81rcu_preempt11:10:060
2305899323,4cyclictest81rcu_preempt09:50:310
2305899316,5cyclictest81rcu_preempt11:39:160
2305899315,4cyclictest81rcu_preempt12:30:440
2305899314,4cyclictest81rcu_preempt12:19:310
2305899313,4cyclictest81rcu_preempt12:03:140
2305899313,4cyclictest81rcu_preempt10:25:140
2305899313,4cyclictest81rcu_preempt10:20:460
2305899313,4cyclictest81rcu_preempt09:25:460
2305899312,4cyclictest81rcu_preempt11:33:360
2305899312,4cyclictest81rcu_preempt08:29:220
2305899312,17cyclictest11564-21packagekitd11:50:300
2305899311,7cyclictest25964-21cut10:10:270
2305899311,4cyclictest4207-21perl10:55:180
2305899311,17cyclictest20227-21rm11:45:190
2305899311,16cyclictest11778-21df12:10:130
23058993110,4cyclictest81rcu_preempt09:21:280
2305899301,5cyclictest81rcu_preempt11:00:190
23058993011,5cyclictest25890-21diskstats08:55:150
23058993010,6cyclictest1113-21grep07:50:120
2305899294,5cyclictest81rcu_preempt07:35:110
2305899291,4cyclictest81rcu_preempt08:00:580
2305899291,14cyclictest21855-21df_inode10:40:150
2305899289,6cyclictest13998-21runrttasks08:23:200
2305899289,6cyclictest0-21swapper/008:41:480
2305899287,9cyclictest81rcu_preempt08:10:260
2305899283,3cyclictest81rcu_preempt09:08:470
23058992811,5cyclictest18671-21seq08:35:210
23058992811,5cyclictest18671-21seq08:35:210
23058992810,5cyclictest11037-21hddtemp_smartct08:15:170
23058992714,8cyclictest24534-21ntpdc08:50:230
2305899268,6cyclictest16195-21taskset08:30:090
2305899261,4cyclictest81rcu_preempt07:56:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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