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2026-07-05 - 03:25

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 792 highest latencies:
System rack9slot4s (updated Sun Jul 05, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
233339910871061,9cyclictest0-21swapper/019:29:540
229012588540,32sleep10-21swapper/119:21:021
218862521475,29sleep00-21swapper/019:20:150
2333499209201,5cyclictest0-21swapper/119:29:531
156192840,8sleep02333399cyclictest23:20:110
74412790,8sleep02333399cyclictest21:30:260
76212680,5sleep1211ktimersoftd/122:58:001
59162590,7sleep12333499cyclictest00:20:111
2333499522,17cyclictest23685-21df22:15:141
2333499521,16cyclictest1973-21aten_r4power_vo00:10:101
2333499511,17cyclictest1705-21runrttasks22:41:081
2333499501,24cyclictest14284-21diskstats21:50:121
2333499501,17cyclictest9554-21runrttasks23:03:241
2333499501,15cyclictest9570-21grep21:35:311
2333499491,17cyclictest26642-21runrttasks22:21:141
2333499491,17cyclictest19564-21runrttasks20:37:281
2333499491,17cyclictest19564-21runrttasks20:37:271
2333499491,15cyclictest23809-21aten_r4power_po20:50:121
2333499491,15cyclictest23743-21memory23:40:211
2333499491,15cyclictest12406-21sh21:45:151
2333499481,19cyclictest32323-21sshd22:36:491
2333499481,15cyclictest28461-21grep19:35:191
2333499481,15cyclictest21261-21aten_r4power_vo23:35:131
2333499481,15cyclictest18810-21chrt23:26:531
2333499481,15cyclictest11310-21chrt23:07:061
2333499481,15cyclictest10568-21/usr/sbin/munin20:15:231
2333499481,14cyclictest32745-21df_inode00:05:151
2333499481,13cyclictest15638-21chrt20:25:411
2333499471,23cyclictest29252-21munin-run21:05:011
2333499471,16cyclictest5231-21chrt20:00:131
2333499471,16cyclictest20361-21cut20:40:151
2333499471,15cyclictest5193-21chrt00:16:021
2333499471,15cyclictest31926-21sh19:45:141
2333499471,15cyclictest31404-21chrt19:44:161
2333499471,15cyclictest15705-21wget00:45:171
2333499471,13cyclictest14963-21chrt23:16:051
23334994710,16cyclictest22430-21processes22:10:251
2333499461,19cyclictest31138-21cat00:00:201
2333499461,16cyclictest26484-21smartctl19:30:181
2333499461,15cyclictest31777-21smartctl21:10:181
2333499461,15cyclictest16816-21grep20:30:211
2333499461,15cyclictest16017-21hddtemp_smartct23:20:171
2333499460,13cyclictest25218-21sh23:45:131
2333499451,16cyclictest13824-21basename00:40:191
2333499451,15cyclictest871-21cat21:15:141
2333499451,15cyclictest27342-21cat22:25:111
2333499451,14cyclictest2989-21df21:20:131
2333499451,13cyclictest2779-21sshd19:54:451
2333499441,18cyclictest12471-21/usr/sbin/munin20:20:181
2333499440,13cyclictest17396-21chrt21:58:061
2333499431,17cyclictest4514-21df22:50:121
2333499427,12cyclictest3286-21runrttasks23:14:531
2333499426,13cyclictest0-21swapper/120:10:181
2333499422,28cyclictest0-21swapper/119:56:111
2333499422,27cyclictest0-21swapper/100:37:121
2333499421,18cyclictest6781-21fschecks_count21:30:151
2333499421,18cyclictest29398-21/usr/sbin/munin21:05:171
2333499421,15cyclictest8900-21awk00:25:291
2333499421,15cyclictest3392-21smartctl22:45:421
2333499421,15cyclictest3392-21smartctl22:45:411
2333499421,14cyclictest29329-21df22:30:151
2333499421,10cyclictest4765-21ls21:25:111
2333499420,15cyclictest18792-21latency_hist00:55:011
2333499417,16cyclictest0-21swapper/100:30:171
2333499412,27cyclictest0-21swapper/123:32:001
2333499411,17cyclictest11801-21runrttasks21:43:291
2333499411,14cyclictest21870-21/usr/sbin/munin20:45:201
2333399418,10cyclictest311222cut22:35:120
2333499402,13cyclictest0-21swapper/120:06:131
2333499401,16cyclictest30130-21sshd23:57:141
2333499401,15cyclictest20926-21runrttasks22:05:391
2333499391,17cyclictest27153-21fschecks_count23:50:151
2333399391,35cyclictest111-21usb-storage22:04:590
2333499381,14cyclictest25630-21/usr/sbin/munin20:55:151
134542381,33sleep013510-21switchtime20:20:280
242602371,4sleep024370-21mailstats22:15:280
2333499361,14cyclictest18252-21hddtemp_smartct22:00:171
2333399367,4cyclictest81rcu_preempt22:05:180
2333399364,16cyclictest29693-21diskstats21:05:140
2333399359,13cyclictest11770-21aten_r4power_cu23:10:080
2333399355,5cyclictest40250irq/92-i91523:45:150
23333993510,13cyclictest26288-21diskstats19:30:160
2333399342,19cyclictest9795-21df00:30:140
2333399341,21cyclictest25654-21aten_r4power_cu20:55:120
23333993410,13cyclictest11452-21wc20:15:250
2333399331,9cyclictest0-21swapper/022:25:200
2333399331,21cyclictest2629-21taskset19:53:110
228802331,28sleep022953-21ls20:45:280
2333399322,19cyclictest0-21swapper/023:56:320
2333399321,4cyclictest81rcu_preempt20:30:300
2333399321,3cyclictest40250irq/92-i91520:00:010
2333399321,19cyclictest15415-21watchsnmpd21:52:010
2333399321,13cyclictest30935-21sed19:40:290
2333399316,11cyclictest7592-21netstat20:05:230
2333399312,13cyclictest12221-21ntp_states00:35:260
23333993120,7cyclictest23012chrt21:18:380
2333399311,4cyclictest81rcu_preempt21:24:400
23333993113,6cyclictest10890-21python23:05:290
23333993113,5cyclictest586-21iostat00:05:200
23333993113,5cyclictest1183-21ntp_states22:40:230
2333399311,18cyclictest455-21taskset21:14:120
2333399309,5cyclictest12211-21aten_r4power_vo21:45:110
2333399305,13cyclictest6038-21expr00:20:120
2333399302,15cyclictest12048-21latency_hist21:45:010
2333399302,14cyclictest3700-21cron00:15:000
2333399301,5cyclictest81rcu_preempt21:01:540
2333399301,4cyclictest81rcu_preempt23:16:510
2333399301,4cyclictest81rcu_preempt22:45:050
2333399301,4cyclictest81rcu_preempt22:45:050
2333399301,4cyclictest81rcu_preempt22:21:440
23333993012,5cyclictest16695-21ntp_states21:55:250
23333993011,6cyclictest8395-21fschecks_time23:00:160
23333993011,5cyclictest20076-21ntp_kernel_err23:30:240
2333399297,5cyclictest4584-21seq21:25:070
2333399294,19cyclictest18691-21iostat_ios20:35:190
2333399294,19cyclictest18691-21iostat_ios20:35:190
2333399294,19cyclictest15492-21diskstats00:45:140
23333992922,4cyclictest3-21ksoftirqd/019:38:380
2333399292,13cyclictest22619-21sort22:10:270
23333992910,6cyclictest21266-21grep23:35:130
2333399290,4cyclictest81rcu_preempt00:40:460
2333399290,4cyclictest81rcu_preempt00:28:310
187622291,24sleep00-21swapper/000:54:480
2333399289,6cyclictest17468-21aten_r4power_po23:25:110
2333399283,4cyclictest81rcu_preempt00:00:360
2333399283,12cyclictest6414-21forks22:55:160
2333399282,4cyclictest81rcu_preempt19:47:350
2333399282,14cyclictest4550-21memory00:15:220
2333399281,24cyclictest111-21usb-storage22:50:120
23333992812,13cyclictest3-21ksoftirqd/020:25:330
2333399281,14cyclictest9560-21sed21:35:310
2333399281,14cyclictest30829-21latency_hist22:35:010
2333399281,13cyclictest9501-21ntpdc20:10:240
2333399281,13cyclictest6279-21chrt20:01:040
2333399281,11cyclictest27305-21chrt23:50:170
2333399279,6cyclictest0-21swapper/023:43:280
2333399261,17cyclictest0-21swapper/020:50:420
2333399261,12cyclictest20602-21kernelversion20:40:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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