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2026-05-03 - 12:14

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 Sun May 03, 2026 00:59:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
115939911351085,32cyclictest16403-21df19:35:131
114702552505,31sleep00-21swapper/019:24:170
111572508463,30sleep10-21swapper/119:21:011
1159299228203,22cyclictest0-21swapper/019:35:130
2689821100,8sleep01159299cyclictest22:57:300
298782880,7sleep01159299cyclictest23:34:410
269942810,4sleep11159399cyclictest21:50:281
244262810,5sleep0111rcuc/000:35:230
315822770,3sleep00-21swapper/021:21:360
12792570,2sleep11280-21rm00:11:121
1159299551,6cyclictest27434-21seq20:05:110
11592995510,11cyclictest0-21swapper/023:46:300
1159299523,11cyclictest0-21swapper/021:00:120
1159299523,11cyclictest0-21swapper/021:00:120
1159299522,13cyclictest9367-21munin-run22:40:010
11592995218,6cyclictest29233-21cat21:20:000
11592995115,6cyclictest5852-21runrttasks00:15:410
11592995110,11cyclictest0-21swapper/021:36:270
1159299502,5cyclictest7373-21python23:10:290
1159299501,12cyclictest9698-21runrttasks20:42:160
1159299501,12cyclictest14739-21rm22:45:130
1159299491,13cyclictest8473-21diskstats22:05:150
1159299482,13cyclictest7349-21iostat21:30:180
11592994819,5cyclictest14102-21cpuspeed_turbos20:55:120
1159299481,13cyclictest6021-21rm21:29:250
1159299481,12cyclictest32431-21ssh21:55:450
1159299481,12cyclictest17466-21ssh23:20:410
1159299471,13cyclictest23378-21ssh21:46:360
1159299471,13cyclictest13332-21rm22:43:460
1159299471,12cyclictest17906-21cstates21:05:130
1159299461,13cyclictest20894-21munin-run21:45:000
1159299452,14cyclictest12847-21diskstats23:50:150
1159299451,13cyclictest20608-21ntp_states21:10:250
1159299451,12cyclictest24961-21ssh22:21:440
1159299451,12cyclictest12024-21df_inode19:25:140
11593994416,4cyclictest81rcu_preempt00:50:281
1159299441,14cyclictest5942-21ssh22:02:120
187392430,9sleep11159399cyclictest22:15:251
92452420,7sleep11159399cyclictest22:05:281
9192420,4sleep1211ktimersoftd/122:30:261
1159399412,12cyclictest193832diskmemload21:28:521
1159299416,8cyclictest26711-21unixbench_multi20:00:290
11592994116,6cyclictest21178-21ssh23:59:000
73662400,3sleep1211ktimersoftd/123:44:551
151602400,7sleep01159299cyclictest23:19:230
1159299401,6cyclictest925-21ssh00:45:160
1159299401,16cyclictest14893-21ssh22:11:100
258122380,4sleep00-21swapper/000:03:410
258122380,4sleep00-21swapper/000:03:410
11593993819,4cyclictest22-21ksoftirqd/122:00:011
1159299381,7cyclictest28994-21ssh21:52:460
326262375,4sleep132637-21ssh21:23:061
11593993712,13cyclictest40250irq/92-i91523:26:261
1159399362,6cyclictest22-21ksoftirqd/122:45:341
242282350,8sleep11159399cyclictest00:35:191
11593993510,4cyclictest81rcu_preempt23:46:301
11592993525,6cyclictest23210-21ssh23:27:000
1159399348,22cyclictest0-21swapper/100:22:261
1159399343,4cyclictest81rcu_preempt00:02:491
1159399343,4cyclictest81rcu_preempt00:02:481
1159399342,28cyclictest0-21swapper/123:04:331
11593993412,5cyclictest22-21ksoftirqd/122:53:491
1159299341,21cyclictest21359-21taskset19:47:260
277432332,3sleep10-21swapper/121:18:061
1159399339,14cyclictest22-21ksoftirqd/121:10:361
1159399338,4cyclictest81rcu_preempt23:50:371
1159399338,4cyclictest81rcu_preempt21:44:181
1159399336,23cyclictest0-21swapper/100:47:241
11593993315,6cyclictest22-21ksoftirqd/121:39:261
11593993311,18cyclictest22-21ksoftirqd/121:31:371
1159299331,7cyclictest21812-21ssh00:32:510
294792321,5sleep10-21swapper/123:34:061
11593993221,6cyclictest23306-21/usr/sbin/munin22:20:191
1159399321,11cyclictest303522sh23:35:101
1159299327,5cyclictest81rcu_preempt23:05:010
77262311,5sleep10-21swapper/122:37:421
56792311,4sleep15691-21ssh23:09:411
296162314,3sleep10-21swapper/100:40:301
12002310,7sleep11159399cyclictest20:20:181
1159399315,23cyclictest201rcuc/123:16:571
11593993117,4cyclictest81rcu_preempt00:15:191
11593993117,12cyclictest22-21ksoftirqd/122:55:141
11593993114,14cyclictest22-21ksoftirqd/100:08:391
1159299315,4cyclictest81rcu_preempt00:41:060
1159299314,4cyclictest81rcu_preempt23:38:060
1159299314,4cyclictest81rcu_preempt22:53:560
1159299314,4cyclictest81rcu_preempt22:29:370
1159299313,4cyclictest81rcu_preempt00:29:070
111052311,26sleep111116-21ssh22:40:341
1159399308,18cyclictest0-21swapper/100:34:181
1159399306,4cyclictest81rcu_preempt23:59:451
1159399305,4cyclictest81rcu_preempt22:25:061
1159399305,4cyclictest81rcu_preempt20:27:021
1159399304,16cyclictest0-21swapper/122:03:491
1159399302,24cyclictest0-21swapper/121:49:031
1159399301,5cyclictest81rcu_preempt20:45:191
1159399301,4cyclictest81rcu_preempt22:10:111
1159399301,4cyclictest81rcu_preempt20:30:161
1159399301,17cyclictest16568-21ssh23:20:201
1159399301,15cyclictest15678-21sed21:00:011
1159299301,4cyclictest81rcu_preempt22:30:100
1159299301,4cyclictest81rcu_preempt00:08:530
95522291,5sleep10-21swapper/120:40:481
194322291,5sleep10-21swapper/119:41:581
173592291,5sleep10-21swapper/121:03:401
173592291,5sleep10-21swapper/121:03:401
1159399292,8cyclictest17902-21cat21:05:131
11593992916,10cyclictest22-21ksoftirqd/120:15:181
1159399291,5cyclictest81rcu_preempt23:11:531
1159299293,3cyclictest81rcu_preempt00:52:480
1159299293,22cyclictest10539-21unixbench_singl00:20:310
1159299292,13cyclictest1805-21hddtemp_smartct23:05:170
11592992919,6cyclictest8062-21cron20:40:000
1159299291,4cyclictest81rcu_preempt23:42:060
11592992911,14cyclictest19857-21ssh22:16:220
1159299290,4cyclictest81rcu_preempt20:12:280
78822281,5sleep10-21swapper/120:38:071
136382281,5sleep10-21swapper/120:54:091
1159399287,17cyclictest0-21swapper/100:27:231
11593992814,12cyclictest22-21ksoftirqd/120:12:351
1159299282,13cyclictest32477-21iostat00:10:200
1159299281,4cyclictest81rcu_preempt20:51:580
1159299281,4cyclictest81rcu_preempt19:30:590
289722271,5sleep10-21swapper/120:08:251
272272271,5sleep10-21swapper/120:04:491
233672271,5sleep10-21swapper/119:53:531
134122271,5sleep10-21swapper/119:29:421
1159299274,8cyclictest31460-21diskstats20:15:140
1159299274,17cyclictest25391-21munin-run20:00:010
11592992710,5cyclictest2225-21dbus-daemon20:22:340
11593992617,6cyclictest22-21ksoftirqd/119:46:161
11593992616,6cyclictest22-21ksoftirqd/119:31:551
1159299269,5cyclictest5452-21mailstats20:30:280
1159299261,13cyclictest2225-21dbus-daemon19:51:340
11593992518,4cyclictest22-21ksoftirqd/119:55:281
11592992513,8cyclictest2225-21dbus-daemon19:45:000
1159299251,11cyclictest3839-21unixbench_singl20:25:250
1159299242,11cyclictest0-21swapper/020:45:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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