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2026-07-10 - 20:31

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 Fri Jul 10, 2026 12:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
193552563518,31sleep10-21swapper/107:22:531
193662510462,32sleep00-21swapper/007:23:000
1961399131109,16cyclictest21492-21munin-run07:30:010
34652460,8sleep11961499cyclictest10:55:241
253562371,4sleep12695-21snmpd10:29:101
1961499365,5cyclictest40250irq/92-i91509:15:251
1961399368,15cyclictest0-21swapper/010:49:310
19613993612,5cyclictest11736-21ntp_states08:25:260
1961399353,19cyclictest0-21swapper/009:50:120
19613993510,20cyclictest9313-21df08:20:140
20862341,5sleep12144-21sed08:00:231
1961399349,21cyclictest0-21swapper/010:05:150
1961399343,15cyclictest20968-21python10:15:280
79352331,28sleep17961-21ntp_states08:15:271
244142331,28sleep124495-21df07:35:131
1961399338,10cyclictest23839-21fschecks_time11:50:160
19613993312,8cyclictest26751-21/usr/sbin/munin09:05:240
146212331,28sleep114779-21grep10:00:141
293412321,5sleep10-21swapper/109:12:511
1961399327,6cyclictest0-21swapper/011:40:350
1961399322,17cyclictest12701-21fgrep12:45:270
1961399321,19cyclictest6956-21proc_pri12:30:240
171402321,4sleep117147-21iostat_ios08:40:201
1961499318,5cyclictest40250irq/92-i91512:20:001
1961499315,4cyclictest81rcu_preempt12:49:511
1961499314,11cyclictest2422-21cpuspeed_turbos12:20:121
1961399314,14cyclictest0-21swapper/007:49:250
1961399312,24cyclictest5256-21/usr/sbin/munin08:10:130
19613993121,6cyclictest26142-40update-apt-xapi07:40:000
19613993110,8cyclictest32037-21fschecks_time09:20:160
114782311,5sleep00-21swapper/011:15:430
63102301,5sleep10-21swapper/109:36:531
49842301,5sleep10-21swapper/108:08:571
289762301,10sleep10-21swapper/110:37:491
239622301,5sleep00-21swapper/007:34:310
231462301,5sleep00-21swapper/011:49:290
216322301,5sleep00-21swapper/008:51:000
199982301,5sleep10-21swapper/108:48:301
1961499306,4cyclictest81rcu_preempt10:21:091
1961499305,5cyclictest81rcu_preempt11:30:281
1961499305,4cyclictest81rcu_preempt10:34:151
1961499303,4cyclictest81rcu_preempt12:14:491
19614993022,5cyclictest26255-21/usr/sbin/munin09:05:151
19614993015,9cyclictest4495-21diskstats12:25:161
1961499301,4cyclictest81rcu_preempt10:44:431
1961499301,24cyclictest24571-21fw_packets09:00:171
1961399308,6cyclictest2225-21dbus-daemon09:55:450
1961399303,4cyclictest81rcu_preempt12:54:230
1961399302,17cyclictest0-21swapper/011:10:180
1961399301,4cyclictest81rcu_preempt07:50:400
19613993012,6cyclictest25711-21taskset09:04:080
19613993010,7cyclictest2063-21tr12:20:000
19613993010,7cyclictest0-21swapper/008:18:590
156702301,5sleep00-21swapper/010:01:170
7972291,5sleep00-21swapper/007:55:530
79162291,5sleep00-21swapper/011:07:390
78712291,5sleep10-21swapper/111:07:121
48702291,5sleep00-21swapper/008:07:450
46742291,5sleep10-21swapper/109:34:231
46742291,5sleep10-21swapper/109:34:231
43612291,5sleep00-21swapper/009:31:060
43612291,5sleep00-21swapper/009:31:050
279592291,5sleep10-21swapper/107:44:181
276552291,5sleep00-21swapper/007:41:080
270542291,5sleep00-21swapper/010:32:190
24412291,5sleep00-21swapper/009:26:350
1961499298,8cyclictest5629-21cat11:00:271
1961499296,4cyclictest81rcu_preempt10:12:441
1961499294,5cyclictest81rcu_preempt10:45:131
1961499293,4cyclictest81rcu_preempt09:51:461
19614992921,5cyclictest31641-21aten_r4power_cu09:20:111
19614992920,5cyclictest9182-21head12:35:291
19614992919,6cyclictest825-21chrt10:50:111
1961499291,4cyclictest81rcu_preempt12:30:321
19614992913,11cyclictest7190-21tune2fs09:40:161
19614992910,7cyclictest3286-21runrttasks12:44:231
1961399298,5cyclictest81rcu_preempt10:40:110
1961399294,12cyclictest18539-21fschecks_time10:10:160
1961399292,14cyclictest28165-21memory10:35:210
1961399292,13cyclictest8510-21cron09:44:590
1961399291,4cyclictest81rcu_preempt11:57:090
1961399291,4cyclictest81rcu_preempt08:46:020
19613992911,5cyclictest3286-21runrttasks12:38:060
1961399291,15cyclictest11565-21gdbus10:55:480
19613992910,15cyclictest312952chrt09:18:360
161222291,5sleep00-21swapper/008:37:280
153582291,5sleep00-21swapper/011:26:490
144142291,5sleep10-21swapper/108:34:121
135882291,5sleep00-21swapper/011:22:550
132602291,5sleep10-21swapper/109:55:251
117632291,5sleep10-21swapper/111:18:381
108542291,5sleep00-21swapper/012:40:280
66482281,5sleep10-21swapper/108:11:451
303432281,5sleep00-21swapper/012:06:050
236912281,5sleep00-21swapper/008:57:540
210782281,5sleep10-21swapper/111:42:311
210532281,5sleep10-21swapper/107:25:441
1961499286,4cyclictest81rcu_preempt07:33:481
1961499284,4cyclictest81rcu_preempt09:25:501
1961499282,4cyclictest81rcu_preempt08:25:131
1961499281,4cyclictest81rcu_preempt11:52:011
1961499281,4cyclictest81rcu_preempt07:54:171
1961499280,4cyclictest81rcu_preempt11:12:171
1961399288,6cyclictest25313-21runrttasks10:28:430
1961399281,4cyclictest81rcu_preempt11:38:420
1961399281,4cyclictest81rcu_preempt09:12:100
1961399281,18cyclictest0-21swapper/008:41:330
1961399281,14cyclictest13078-21diskstats08:30:160
1961399281,13cyclictest2019-21runrttasks10:51:070
19613992810,6cyclictest22433-21interrupts10:20:180
149812281,5sleep10-21swapper/112:51:201
101232281,5sleep10-21swapper/109:47:191
100222281,5sleep00-21swapper/009:46:150
63442271,5sleep00-21swapper/009:37:140
41922271,4sleep00-21swapper/012:25:080
238602271,5sleep10-21swapper/108:59:381
1961499271,7cyclictest28563-21fschecks_count07:45:171
1961499271,22cyclictest0-21swapper/112:00:251
1961399273,12cyclictest16064-21cstates11:30:110
1961399272,14cyclictest0-21swapper/012:21:050
1961399271,9cyclictest0-21swapper/012:13:010
10732271,5sleep10-21swapper/107:58:441
21462261,5sleep00-21swapper/008:00:240
1961499268,14cyclictest9234-21cpuspeed_turbos08:20:131
1961499267,15cyclictest0-21swapper/112:05:171
1961499263,19cyclictest22301-21ntpq11:45:231
1961499262,4cyclictest81rcu_preempt11:25:331
1961499261,3cyclictest81rcu_preempt08:52:191
19614992612,7cyclictest20248-21diskstats10:15:151
1961399261,13cyclictest2225-21dbus-daemon11:01:310
19613992610,4cyclictest11565-21gdbus12:01:330
192782261,5sleep10-21swapper/111:38:341
176052261,5sleep10-21swapper/110:06:561
1961499259,12cyclictest0-21swapper/108:35:281
19614992416,4cyclictest22-21ksoftirqd/111:57:061
1961499241,10cyclictest0-21swapper/111:20:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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