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2025-12-11 - 21:41

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 Thu Dec 11, 2025 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
214549912351209,23cyclictest0-21swapper/007:25:100
214559912241199,21cyclictest21603-21aten_r4power_cu07:25:121
214559911901156,28cyclictest4353-21smartctl08:00:271
213422563518,30sleep10-21swapper/107:24:291
211342538451,73sleep00-21swapper/007:22:190
2145499136113,20cyclictest0-21swapper/008:00:280
249462890,5sleep02145499cyclictest12:25:300
141272880,8sleep12145599cyclictest10:34:341
290862800,5sleep029087-21ssh12:30:160
116032790,8sleep12145599cyclictest12:45:231
201162740,3sleep120115-21hwlatdetect10:40:181
250052660,5sleep1201rcuc/112:25:311
21454996211,10cyclictest25532-21rm11:20:010
89382570,7sleep02145499cyclictest08:15:000
154792490,7sleep12145599cyclictest12:15:291
312912430,5sleep1201rcuc/110:18:291
2145499426,4cyclictest81rcu_preempt11:02:100
2145599412,8cyclictest0-21swapper/112:40:141
2145499401,8cyclictest0-21swapper/012:15:260
38722380,2sleep13870-21tr09:50:121
2145499387,19cyclictest22717-21ssh10:43:010
2145499382,16cyclictest0-21swapper/009:41:000
21454993816,5cyclictest2376-21NetworkManager09:35:260
21454993811,13cyclictest2220-21dbus-daemon11:57:000
21454993810,13cyclictest2220-21dbus-daemon10:48:220
2145599378,17cyclictest0-21swapper/110:54:391
306402360,8sleep12145599cyclictest09:10:261
217722360,9sleep02145499cyclictest12:22:300
2145499362,22cyclictest11472-21/usr/sbin/munin11:05:130
164802361,31sleep116491-21ssh11:43:551
315902351,30sleep131754-21fschecks_time09:45:181
219782353,28sleep10-21swapper/110:09:001
2145499353,5cyclictest81rcu_preempt10:17:280
21454993515,4cyclictest0-21swapper/009:34:120
69812341,29sleep16994-21sh10:26:091
2145599346,17cyclictest0-21swapper/109:32:131
2145499346,5cyclictest81rcu_preempt09:48:510
2145499342,12cyclictest0-21swapper/011:45:210
21454993415,6cyclictest6061-21ntp_states10:25:270
2145499341,20cyclictest3145-21ssh10:22:350
2145499341,13cyclictest3619-21hddtemp_smartct11:30:190
92792331,28sleep19293-21ssh11:02:271
52502331,5sleep00-21swapper/012:39:330
51142338,22sleep15124-21ssh11:31:241
39342331,5sleep00-21swapper/010:56:440
2145599338,11cyclictest16207-21ssh12:50:251
2145599332,26cyclictest0-21swapper/111:37:311
2145499337,13cyclictest81rcu_preempt11:20:290
2145499333,4cyclictest81rcu_preempt10:06:370
2145499332,19cyclictest18981-21ssh11:12:340
21454993316,13cyclictest3-21ksoftirqd/008:36:100
21454993312,5cyclictest9873-21ssh09:22:220
150492331,27sleep115062-21diskstats10:35:171
2145599328,13cyclictest40950irq/93-i91510:00:001
2145599326,16cyclictest0-21swapper/110:23:281
21455993219,7cyclictest19613-21iostat_ios12:20:201
2145599321,17cyclictest12212-21ssh12:12:391
2145499327,5cyclictest26747-21memory07:35:240
2145499322,18cyclictest0-21swapper/008:25:010
21454993215,6cyclictest3-21ksoftirqd/012:00:300
2145499321,4cyclictest81rcu_preempt09:19:520
21454993213,6cyclictest24692-21ssh11:51:500
2145499321,12cyclictest6741-21ssh12:06:420
2145499321,12cyclictest0-21swapper/009:55:090
2145599318,20cyclictest0-21swapper/112:32:191
2145599317,21cyclictest0-21swapper/111:50:131
2145599315,4cyclictest81rcu_preempt08:15:021
21455993115,12cyclictest22-21ksoftirqd/110:49:241
2145599311,17cyclictest9023-21sh09:21:071
2145499318,8cyclictest9615-21df_inode12:10:160
2145499317,4cyclictest81rcu_preempt10:04:260
2145499311,4cyclictest81rcu_preempt10:30:370
21454993112,5cyclictest20558-21df08:45:160
21454993111,7cyclictest32009-21diskstats07:50:150
2145499311,17cyclictest0-21swapper/012:49:090
21454993111,6cyclictest12251-21cstates09:25:130
2145499311,13cyclictest0-21swapper/007:59:330
311412301,3sleep031291-21users09:10:340
287062301,5sleep10-21swapper/109:41:441
2145599308,18cyclictest0-21swapper/111:46:591
2145599304,4cyclictest81rcu_preempt07:33:291
2145599303,17cyclictest0-21swapper/108:33:161
2145599302,16cyclictest0-21swapper/111:05:231
2145599301,4cyclictest81rcu_preempt08:51:531
2145599301,4cyclictest81rcu_preempt08:35:441
2145599301,4cyclictest81rcu_preempt07:45:111
2145599301,17cyclictest4846-21ssh12:38:561
2145599301,11cyclictest154292sh09:28:271
2145499309,6cyclictest31312-21runrttasks07:47:340
2145499302,14cyclictest4361-21iostat09:50:190
2145499302,13cyclictest8252-21diskstats11:35:200
2145499301,4cyclictest81rcu_preempt08:59:180
21454993013,5cyclictest13283-21hddtemp_smartct11:40:210
21454993012,6cyclictest10682-21cron08:20:010
21454993012,5cyclictest2376-21NetworkManager10:39:460
21454993012,14cyclictest15606-21cut12:50:150
143752301,5sleep00-21swapper/008:29:110
68202291,5sleep00-21swapper/008:08:570
57632291,5sleep00-21swapper/012:40:030
2145599295,5cyclictest40950irq/93-i91512:05:261
2145599294,4cyclictest81rcu_preempt09:07:341
2145599294,17cyclictest31280-21iostat_ios11:25:221
2145599293,4cyclictest81rcu_preempt08:57:471
2145599292,9cyclictest0-21swapper/111:57:551
21455992918,8cyclictest22-21ksoftirqd/110:10:151
21455992917,9cyclictest22-21ksoftirqd/111:24:561
2145499299,7cyclictest29534-21cron09:10:000
2145499299,5cyclictest28242-21df07:40:130
2145499293,4cyclictest81rcu_preempt10:52:290
2145499293,13cyclictest23175-21python08:50:280
2145499292,14cyclictest31077-21tune2fs11:25:180
2145499292,14cyclictest23803-21/usr/sbin/munin10:10:220
2145499291,4cyclictest81rcu_preempt07:33:570
196832291,5sleep00-21swapper/008:40:360
196832291,5sleep00-21swapper/008:40:350
161972291,5sleep00-21swapper/008:33:390
160112291,5sleep10-21swapper/111:10:051
253412281,5sleep10-21swapper/109:38:531
2145599284,13cyclictest0-21swapper/110:59:081
2145599283,4cyclictest81rcu_preempt09:03:501
2145599283,4cyclictest81rcu_preempt07:54:231
2145599283,15cyclictest0-21swapper/110:01:581
2145599283,15cyclictest0-21swapper/108:10:091
2145599281,4cyclictest81rcu_preempt09:17:041
2145599281,4cyclictest81rcu_preempt08:46:461
2145599281,23cyclictest1636-21hddtemp_smartct07:55:191
21455992810,15cyclictest0-21swapper/111:19:071
2145499281,13cyclictest27210-21/usr/sbin/munin09:00:290
292992271,5sleep10-21swapper/107:41:101
2145599279,15cyclictest0-21swapper/112:01:381
2145599279,14cyclictest198652chrt08:42:291
2145599279,14cyclictest198652chrt08:42:291
21455992718,6cyclictest22-21ksoftirqd/108:29:231
2145599261,11cyclictest10922-21grep08:20:111
21455992610,12cyclictest0-21swapper/107:35:261
2145599251,9cyclictest5808-21iostat_ios08:05:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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