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2026-08-09 - 00:03

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 376 highest latencies:
System rack9slot4s (updated Sat Aug 08, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
149939911681145,18cyclictest0-21swapper/112:45:161
149929911121071,29cyclictest15964-21ntp_states07:25:240
149939910801061,16cyclictest15885-21strings07:25:221
145622745699,30sleep00-21swapper/007:21:020
149192653604,34sleep10-21swapper/107:24:491
358121510,8sleep01499299cyclictest12:35:150
1499299138119,16cyclictest0-21swapper/012:45:150
1228621110,7sleep00-21swapper/011:30:300
2583521000,4sleep0111rcuc/007:50:180
173912810,5sleep117389-21munin-plugin-st08:55:001
312142610,4sleep00-21swapper/009:30:170
246532470,9sleep0111rcuc/012:05:140
138202440,5sleep113815-21strings11:35:231
14992993822,6cyclictest3-21ksoftirqd/012:24:000
14992993822,6cyclictest3-21ksoftirqd/010:33:040
14992993822,6cyclictest3-21ksoftirqd/007:40:490
14992993821,6cyclictest3-21ksoftirqd/008:08:340
14992993722,5cyclictest3-21ksoftirqd/011:03:330
14992993720,6cyclictest3-21ksoftirqd/008:18:280
14992993719,6cyclictest3-21ksoftirqd/012:03:210
14992993718,5cyclictest3-21ksoftirqd/010:44:340
113822371,5sleep111529-21sed10:05:001
14992993621,5cyclictest3-21ksoftirqd/010:17:050
14992993620,6cyclictest3-21ksoftirqd/008:29:440
14992993620,5cyclictest3-21ksoftirqd/008:13:100
14992993619,6cyclictest3-21ksoftirqd/008:00:320
14992993519,6cyclictest3-21ksoftirqd/008:42:310
14992993519,5cyclictest3-21ksoftirqd/011:52:030
14992993519,5cyclictest3-21ksoftirqd/010:35:380
14992993519,5cyclictest3-21ksoftirqd/010:25:510
79532341,29sleep18061-21df09:55:131
37632341,4sleep13791-21hddtemp_smartct12:35:191
267252341,29sleep026736-21smartctl12:10:190
1499399344,26cyclictest989-21smartctl08:10:191
1499299344,19cyclictest0-21swapper/010:10:170
14992993418,6cyclictest3-21ksoftirqd/011:46:010
14992993418,5cyclictest3-21ksoftirqd/008:48:560
98012330,3sleep041ktimersoftd/011:25:170
314282330,4sleep1211ktimersoftd/112:22:001
1499399336,4cyclictest81rcu_preempt07:33:121
14993993313,6cyclictest24376-21aten_r4power_cu12:05:111
14992993318,5cyclictest3-21ksoftirqd/012:40:500
14992993318,5cyclictest3-21ksoftirqd/009:58:470
14992993318,5cyclictest3-21ksoftirqd/009:44:350
14992993318,5cyclictest3-21ksoftirqd/009:24:220
14992993317,5cyclictest3-21ksoftirqd/007:58:200
1499299331,12cyclictest0-21swapper/008:35:370
14992993217,5cyclictest3-21ksoftirqd/009:45:540
14992993217,5cyclictest3-21ksoftirqd/009:10:200
14992993215,5cyclictest3-21ksoftirqd/011:44:250
14992993215,5cyclictest3-21ksoftirqd/011:44:250
1499299321,19cyclictest30197-21cron10:54:590
14992993211,5cyclictest3-21ksoftirqd/011:10:140
1499299321,10cyclictest28324-21munin-run10:50:010
59852311,9sleep10-21swapper/108:23:571
288042311,26sleep12695-21snmpd07:57:531
1499399313,4cyclictest81rcu_preempt09:07:371
1499399312,4cyclictest0-21swapper/111:15:301
1499399310,6cyclictest81rcu_preempt12:44:011
1499299317,7cyclictest0-21swapper/010:03:170
1499299311,7cyclictest1855-21cron09:40:000
14992993117,4cyclictest3-21ksoftirqd/011:35:120
14992993116,5cyclictest3-21ksoftirqd/012:33:550
14992993116,5cyclictest3-21ksoftirqd/009:02:590
14992993115,6cyclictest3-21ksoftirqd/011:09:590
14992993115,5cyclictest3-21ksoftirqd/008:24:480
14992993115,5cyclictest3-21ksoftirqd/007:35:070
14992993110,6cyclictest21510-21cpuspeed_turbos09:05:130
117822311,26sleep111787-21irqstats11:30:221
327162301,25sleep132743-21hddtemp_smartct11:00:181
192022301,5sleep00-21swapper/008:59:320
167482301,5sleep10-21swapper/110:17:111
1499399305,4cyclictest81rcu_preempt07:37:231
14993993020,6cyclictest1129-21cron12:30:001
1499399301,4cyclictest81rcu_preempt08:04:191
14992993015,5cyclictest3-21ksoftirqd/009:54:400
14992993014,5cyclictest3-21ksoftirqd/012:25:310
14992993010,8cyclictest173722sleep008:55:000
96022291,5sleep00-21swapper/008:32:300
317822291,5sleep00-21swapper/010:57:060
280992291,5sleep00-21swapper/012:15:070
280072291,5sleep10-21swapper/110:46:511
249682291,5sleep10-21swapper/107:48:581
208252291,5sleep10-21swapper/109:01:401
205862291,5sleep00-21swapper/011:55:110
204212291,5sleep10-21swapper/110:26:101
1499399295,4cyclictest81rcu_preempt10:07:451
1499399294,4cyclictest81rcu_preempt12:02:531
1499399294,4cyclictest81rcu_preempt08:37:221
1499399292,4cyclictest81rcu_preempt10:22:011
1499399291,4cyclictest81rcu_preempt11:26:541
1499299297,7cyclictest3-21ksoftirqd/007:33:130
1499299297,6cyclictest3-21ksoftirqd/010:05:250
1499299292,14cyclictest2225-21dbus-daemon09:25:280
14992992915,4cyclictest3-21ksoftirqd/011:17:460
14992992913,5cyclictest40250irq/92-i91510:20:290
104562291,5sleep00-21swapper/012:52:410
53462281,5sleep10-21swapper/109:45:581
321222281,5sleep10-21swapper/109:31:511
300962281,5sleep10-21swapper/110:54:041
1499399289,15cyclictest0-21swapper/107:50:271
14993992820,5cyclictest3225-21needreboot08:15:251
14993992818,6cyclictest19329-21ls09:00:011
1499399281,16cyclictest0-21swapper/109:10:141
14993992810,4cyclictest30552-21cpuspeed_turbos10:55:141
1499299281,14cyclictest25998-21/usr/sbin/munin09:15:260
132852281,5sleep10-21swapper/108:41:331
90592271,5sleep10-21swapper/111:24:091
79032271,5sleep10-21swapper/108:29:211
34582271,5sleep10-21swapper/109:40:501
33872271,5sleep10-21swapper/111:08:561
325112271,5sleep10-21swapper/108:07:121
288292271,5sleep10-21swapper/109:25:031
282462271,5sleep10-21swapper/109:20:321
260882271,5sleep10-21swapper/110:41:211
16142271,5sleep10-21swapper/109:37:331
1499399279,5cyclictest40250irq/92-i91508:30:281
1499399279,5cyclictest22-21ksoftirqd/109:15:251
1499399276,7cyclictest6652-21needreboot09:50:231
1499399276,4cyclictest81rcu_preempt11:40:231
1499399276,4cyclictest81rcu_preempt11:40:221
1499399274,4cyclictest81rcu_preempt11:48:031
1499399273,8cyclictest20887-21diskstats11:55:161
1499399272,4cyclictest81rcu_preempt11:53:291
1499399272,11cyclictest27500-21users12:10:301
14993992718,5cyclictest21884-21cut07:40:171
14993992716,6cyclictest24569-21plymouth10:40:011
1499299271,9cyclictest24566-21grep07:45:280
14992992712,5cyclictest3-21ksoftirqd/011:24:200
147432271,5sleep10-21swapper/110:10:551
105622271,5sleep10-21swapper/112:53:481
225032261,4sleep10-21swapper/110:33:201
1499399267,7cyclictest4737-21timerandwakeup11:10:291
1499399261,10cyclictest14372-21iostat08:45:191
14993992512,8cyclictest2225-21dbus-daemon12:15:181
1499399241,8cyclictest2120-21ntpq12:30:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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