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2025-12-10 - 23:07

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 all highest latencies:
System rack9slot4s (updated Wed Dec 10, 2025 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
162439911301105,18cyclictest22193-21apt-get07:36:221
162429911171068,37cyclictest16428-21basename07:25:120
162439910931077,13cyclictest0-21swapper/107:25:121
159592521475,32sleep10-21swapper/107:22:471
161092442352,29sleep00-21swapper/007:24:160
1624299151127,21cyclictest0-21swapper/007:36:210
229132830,7sleep11624399cyclictest11:21:421
285822780,5sleep1201rcuc/107:55:131
118962720,23sleep03-21ksoftirqd/008:35:210
90322460,5sleep10-21swapper/111:40:311
17292460,5sleep11715-21ssh12:40:301
16243994226,5cyclictest22-21ksoftirqd/110:06:521
16243994125,5cyclictest22-21ksoftirqd/112:18:491
16243994125,5cyclictest22-21ksoftirqd/111:02:431
16243994025,5cyclictest22-21ksoftirqd/109:55:401
16243994024,6cyclictest22-21ksoftirqd/111:52:511
16243994024,5cyclictest22-21ksoftirqd/110:35:231
16243994023,6cyclictest22-21ksoftirqd/111:39:261
16243994022,8cyclictest22-21ksoftirqd/110:14:591
16243994021,5cyclictest22-21ksoftirqd/109:33:141
16243994016,7cyclictest22-21ksoftirqd/111:29:191
16243994016,7cyclictest22-21ksoftirqd/109:24:131
16243994015,6cyclictest22-21ksoftirqd/112:50:281
1640123912,5sleep00-21swapper/011:49:130
16243993923,6cyclictest22-21ksoftirqd/108:55:381
16243993923,5cyclictest22-21ksoftirqd/110:21:131
16243993918,6cyclictest22-21ksoftirqd/112:21:571
16243993917,6cyclictest22-21ksoftirqd/111:15:301
16243993916,7cyclictest22-21ksoftirqd/110:52:531
16243993916,6cyclictest22-21ksoftirqd/110:30:071
16243993915,6cyclictest22-21ksoftirqd/109:40:161
1624399391,26cyclictest0-21swapper/109:53:071
291292380,3sleep041ktimersoftd/011:28:450
206232381,4sleep020633-21ssh10:12:280
16243993821,8cyclictest22-21ksoftirqd/112:00:421
16243993816,6cyclictest22-21ksoftirqd/109:12:481
16243993815,7cyclictest22-21ksoftirqd/112:29:491
16243993815,7cyclictest22-21ksoftirqd/109:39:121
1624399375,8cyclictest22-21ksoftirqd/110:57:481
16243993723,4cyclictest22-21ksoftirqd/109:28:101
16243993722,4cyclictest22-21ksoftirqd/110:00:151
16243993721,6cyclictest22-21ksoftirqd/112:35:051
16243993721,5cyclictest22-21ksoftirqd/112:48:271
16243993721,5cyclictest22-21ksoftirqd/108:31:151
16243993718,8cyclictest22-21ksoftirqd/110:25:131
16243993715,6cyclictest22-21ksoftirqd/112:32:381
16243993714,7cyclictest22-21ksoftirqd/109:48:281
1624399371,23cyclictest6072-21fschecks_time08:20:161
16243993621,5cyclictest22-21ksoftirqd/110:47:041
16243993621,4cyclictest22-21ksoftirqd/112:12:511
1624399361,6cyclictest137350irq/90-eth011:05:181
16243993614,7cyclictest22-21ksoftirqd/110:40:351
16243993611,15cyclictest22-21ksoftirqd/111:47:061
1624299366,4cyclictest81rcu_preempt12:41:180
1624299365,4cyclictest81rcu_preempt10:45:330
83432351,30sleep08389-21missed_timers11:40:230
1624399352,21cyclictest22908-21diskstats09:05:151
16243993515,7cyclictest22-21ksoftirqd/109:16:541
16243993514,7cyclictest22-21ksoftirqd/111:31:211
16243993514,7cyclictest22-21ksoftirqd/110:18:401
16243993514,6cyclictest22-21ksoftirqd/111:12:011
16243993513,6cyclictest22-21ksoftirqd/111:55:141
1624299355,5cyclictest81rcu_preempt10:22:160
1624299355,4cyclictest81rcu_preempt09:17:580
1624299351,7cyclictest10826-21ssh09:29:160
1624399342,8cyclictest13686-21perl08:40:211
1624299347,5cyclictest81rcu_preempt10:44:250
1624299343,13cyclictest0-21swapper/010:25:220
1624299341,8cyclictest12436-21ssh12:51:480
16242993411,5cyclictest4023-21ssh09:21:230
16243993312,6cyclictest22-21ksoftirqd/112:05:341
1624299335,5cyclictest81rcu_preempt12:39:060
1624299335,4cyclictest81rcu_preempt12:17:240
1624299331,8cyclictest13862-21ssh09:31:420
1624299331,7cyclictest24029-21ssh11:56:170
1624299331,13cyclictest3619-21cpuspeed_turbos09:55:150
1624399328,5cyclictest0-21swapper/108:35:171
16243993217,5cyclictest22-21ksoftirqd/108:06:131
1624299328,4cyclictest81rcu_preempt10:17:140
1624299326,5cyclictest81rcu_preempt12:08:030
1624299326,4cyclictest81rcu_preempt10:38:260
1624299326,4cyclictest81rcu_preempt09:54:350
1624299325,5cyclictest81rcu_preempt11:11:500
1624299324,4cyclictest81rcu_preempt09:45:190
1624299323,4cyclictest81rcu_preempt12:02:450
16242993222,6cyclictest40950irq/93-i91511:08:220
16242993210,4cyclictest0-21swapper/009:37:200
1624299313,5cyclictest81rcu_preempt11:01:450
1624299312,5cyclictest81rcu_preempt11:17:460
1624299312,4cyclictest81rcu_preempt10:05:570
1624299311,4cyclictest81rcu_preempt08:44:020
11082311,4sleep01120-21rm11:33:120
107902310,9sleep01624299cyclictest10:02:080
1624399308,7cyclictest22-21ksoftirqd/108:16:321
1624399306,7cyclictest22-21ksoftirqd/109:01:441
1624399306,13cyclictest40950irq/93-i91507:30:161
1624399305,13cyclictest31311-21ntp_states08:00:341
16243993017,7cyclictest23233-21diskstats07:40:161
1624399301,16cyclictest2065-21df08:10:141
1624299302,4cyclictest81rcu_preempt10:33:510
1624299302,21cyclictest25017-21ntp_states10:50:260
1624299301,4cyclictest81rcu_preempt12:30:590
1624299301,4cyclictest81rcu_preempt08:08:370
1624299301,3cyclictest81rcu_preempt11:52:500
1624299301,22cyclictest18927-21/usr/sbin/munin08:55:340
1624299301,11cyclictest0-21swapper/012:45:080
197732291,5sleep00-21swapper/007:30:310
164552291,3sleep12220-21dbus-daemon08:46:341
1624399291,8cyclictest26415-21sshd07:48:551
1624299296,5cyclictest0-21swapper/008:15:050
1624299293,4cyclictest81rcu_preempt09:42:110
1624299291,4cyclictest81rcu_preempt12:27:510
1624299291,4cyclictest81rcu_preempt12:10:410
1624299291,4cyclictest81rcu_preempt10:57:490
16242992911,5cyclictest6099-21grep08:20:170
16242992911,5cyclictest3717-21ntp_states11:35:260
1624299291,12cyclictest20937-21grep09:00:150
16242992910,8cyclictest0-21swapper/007:40:180
107442291,6sleep00-21swapper/008:31:010
89962281,5sleep00-21swapper/008:27:240
89882281,5sleep10-21swapper/108:27:191
239022281,5sleep00-21swapper/009:05:400
233682281,5sleep00-21swapper/011:22:220
1624399282,8cyclictest17007-21wget08:50:131
1624399281,9cyclictest26691-21/usr/sbin/munin07:50:311
1624299284,3cyclictest81rcu_preempt07:50:150
1624299282,13cyclictest25693-21ssh09:10:270
16242992820,5cyclictest25641-21ntp_states07:45:260
16242992810,6cyclictest17010-21tr08:50:120
16242992810,5cyclictest2608-21/usr/sbin/munin08:10:250
137082281,5sleep00-21swapper/012:20:020
1624299279,6cyclictest15640-21if_eth008:45:210
1624299279,5cyclictest30449-21sshd08:00:010
1624299274,13cyclictest29171-21uname07:55:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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