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2026-07-02 - 16:08

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 Thu Jul 02, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
184599912511213,34cyclictest22871-21munin-run07:35:001
180732564519,30sleep00-21swapper/007:21:330
182702562518,29sleep10-21swapper/107:23:371
1845899170147,16cyclictest22892-21apt-get07:35:000
98842860,9sleep01845899cyclictest12:40:290
250232540,8sleep11845999cyclictest10:30:181
18459995216,6cyclictest22-21ksoftirqd/111:55:121
18459995216,6cyclictest22-21ksoftirqd/108:20:111
18459995021,9cyclictest22-21ksoftirqd/108:40:231
18459995014,6cyclictest22-21ksoftirqd/112:40:221
18459995013,6cyclictest22-21ksoftirqd/111:10:121
18459994918,4cyclictest22-21ksoftirqd/112:35:201
18459994912,6cyclictest22-21ksoftirqd/107:40:241
18459994911,6cyclictest22-21ksoftirqd/107:55:111
100182480,20sleep03-21ksoftirqd/011:15:260
42692470,6sleep14267-21tr08:10:101
18459994719,4cyclictest22-21ksoftirqd/109:05:181
18459994713,6cyclictest22-21ksoftirqd/110:40:261
18459994613,6cyclictest22-21ksoftirqd/112:30:111
18459994612,6cyclictest22-21ksoftirqd/107:45:101
18459994612,5cyclictest22-21ksoftirqd/108:00:301
291002450,9sleep01845899cyclictest12:05:310
18459994517,8cyclictest22-21ksoftirqd/110:55:131
18459994514,5cyclictest22-21ksoftirqd/108:36:121
18459994512,6cyclictest22-21ksoftirqd/111:20:181
18459994512,6cyclictest22-21ksoftirqd/111:20:171
18459994512,6cyclictest22-21ksoftirqd/108:53:011
18459994511,6cyclictest22-21ksoftirqd/109:15:101
18459994511,5cyclictest22-21ksoftirqd/108:15:221
18459994511,5cyclictest22-21ksoftirqd/108:15:221
1845999449,6cyclictest22-21ksoftirqd/111:25:101
18459994410,5cyclictest22-21ksoftirqd/109:20:101
1845999439,6cyclictest22-21ksoftirqd/111:35:291
1845999438,5cyclictest22-21ksoftirqd/110:05:051
18459994317,9cyclictest22-21ksoftirqd/110:40:011
18459994317,8cyclictest22-21ksoftirqd/110:50:061
18459994311,6cyclictest22-21ksoftirqd/109:30:161
1845999429,5cyclictest22-21ksoftirqd/111:50:111
1845999428,5cyclictest22-21ksoftirqd/110:20:251
1845999426,6cyclictest22-21ksoftirqd/109:10:121
1845999426,6cyclictest22-21ksoftirqd/108:25:131
18459994223,4cyclictest22-21ksoftirqd/112:25:211
18459994223,4cyclictest22-21ksoftirqd/108:05:171
18459994210,6cyclictest22-21ksoftirqd/108:55:111
1845999419,6cyclictest22-21ksoftirqd/112:00:221
18459994123,4cyclictest22-21ksoftirqd/111:05:231
18459994123,4cyclictest22-21ksoftirqd/108:30:121
18459994123,4cyclictest22-21ksoftirqd/107:35:111
18459994122,4cyclictest22-21ksoftirqd/110:10:171
18459994119,4cyclictest22-21ksoftirqd/111:45:111
18459994119,4cyclictest22-21ksoftirqd/107:50:151
18459994110,4cyclictest81rcu_preempt12:06:331
18458994113,15cyclictest25962-21/usr/sbin/munin12:00:210
1845999409,5cyclictest22-21ksoftirqd/112:14:451
1845999408,5cyclictest22-21ksoftirqd/111:00:141
1845999406,6cyclictest22-21ksoftirqd/109:25:141
18459994024,4cyclictest22-21ksoftirqd/110:00:191
18459994023,4cyclictest22-21ksoftirqd/111:30:141
18459994020,4cyclictest22-21ksoftirqd/110:15:111
18459994019,4cyclictest22-21ksoftirqd/111:40:161
18459994019,4cyclictest22-21ksoftirqd/108:45:111
1845999397,6cyclictest22-21ksoftirqd/109:55:261
1845999397,4cyclictest81rcu_preempt09:47:411
18459993923,4cyclictest22-21ksoftirqd/112:50:131
18459993922,4cyclictest22-21ksoftirqd/111:15:101
18459993921,4cyclictest22-21ksoftirqd/109:00:121
18459993920,4cyclictest22-21ksoftirqd/109:40:291
18459993910,10cyclictest22-21ksoftirqd/107:25:161
1845999389,10cyclictest22-21ksoftirqd/109:35:131
1845999388,10cyclictest22-21ksoftirqd/112:20:121
18459993825,4cyclictest22-21ksoftirqd/112:15:221
18459993819,4cyclictest22-21ksoftirqd/110:25:181
18458993811,4cyclictest81rcu_preempt09:25:240
18459993723,4cyclictest22-21ksoftirqd/112:45:241
18459993723,4cyclictest22-21ksoftirqd/109:50:171
1845999361,6cyclictest30615-21/usr/sbin/munin10:45:181
18458993618,6cyclictest16734-21cron10:10:000
137872351,30sleep013948-21perl08:35:180
129232341,4sleep02225-21dbus-daemon08:30:570
115082341,5sleep011589-21/usr/sbin/munin11:20:210
115082341,5sleep011589-21/usr/sbin/munin11:20:210
1845899339,12cyclictest9083-21unixbench_singl08:20:280
1845899332,13cyclictest31121-21memory09:20:200
1845899331,13cyclictest6983-21munin-plugin-st11:10:010
1845899327,4cyclictest81rcu_preempt09:15:120
1845899322,5cyclictest81rcu_preempt10:23:410
1845899321,4cyclictest81rcu_preempt08:05:070
18458993212,7cyclictest5978-21wget08:15:110
18458993212,7cyclictest5978-21wget08:15:110
18458993211,7cyclictest504-21python10:50:290
18458993211,10cyclictest0-21swapper/011:35:590
1845899316,12cyclictest28326-21apt-get07:47:520
1845899312,5cyclictest81rcu_preempt09:00:300
1845899312,17cyclictest3286-21runrttasks07:55:450
1845899312,14cyclictest1985-21cstates09:30:120
1845899311,8cyclictest0-21swapper/012:25:160
18458993112,7cyclictest11694-21/usr/sbin/munin09:55:170
18458993112,6cyclictest27159-21hddtemp_smartct09:10:180
18458993112,6cyclictest24779-21/usr/sbin/munin09:05:170
18458993112,5cyclictest21311-21/usr/sbin/munin08:55:140
18458993111,5cyclictest496-21df_inode08:00:140
170312311,9sleep00-21swapper/008:44:290
201172301,5sleep00-21swapper/007:28:020
1845899302,14cyclictest30542-21ntp_states12:10:230
1845899301,4cyclictest81rcu_preempt10:35:350
18458993012,6cyclictest20511-21/usr/sbin/munin10:20:010
18458993012,5cyclictest20903-21iostat11:45:190
18458993011,6cyclictest11171-21irqstats12:45:200
1845899301,15cyclictest8321-21/usr/sbin/munin09:45:260
63492291,5sleep00-21swapper/012:32:220
296952291,5sleep00-21swapper/010:42:490
26272291,5sleep00-21swapper/012:23:300
255762291,5sleep00-21swapper/011:57:570
1845899294,4cyclictest81rcu_preempt07:51:370
1845899293,14cyclictest0-21swapper/012:39:150
1845899292,14cyclictest17535-21df08:45:120
1845899292,14cyclictest13250-21perl11:25:140
1845899291,4cyclictest81rcu_preempt09:43:570
1845899291,4cyclictest81rcu_preempt08:28:380
18458992911,6cyclictest31087-21python10:45:270
1845899291,16cyclictest19421-21df_inode08:50:140
1845899291,15cyclictest7818-21/usr/sbin/munin11:10:220
1845899291,15cyclictest23358-21/usr/sbin/munin10:25:230
1845899291,14cyclictest19886-21runrttasks11:42:160
159752291,5sleep00-21swapper/011:30:530
53082281,5sleep00-21swapper/009:38:450
263422281,5sleep00-21swapper/007:41:400
1845899283,13cyclictest0-21swapper/012:16:510
1845899282,14cyclictest0-21swapper/010:30:240
1845899282,13cyclictest23657-21irqstats07:35:200
18458992812,5cyclictest11565-21gdbus10:01:010
1845899280,4cyclictest81rcu_preempt10:11:590
107742281,5sleep00-21swapper/009:51:490
18458992717,6cyclictest4182-21aten_r4power_vo08:10:090
1845899271,13cyclictest11565-21gdbus12:54:290
18458992710,4cyclictest2530-21wc10:55:290
46862251,5sleep00-21swapper/011:00:460
1845899251,12cyclictest1974-21lldpad11:50:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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