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2026-03-17 - 06:08

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 highest latencies:
System rack9slot4s (updated Tue Mar 17, 2026 00:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
97429911471137,6cyclictest0-21swapper/119:26:501
97419911231093,17cyclictest0-21swapper/019:26:280
92642578532,31sleep10-21swapper/119:20:351
96292564517,32sleep00-21swapper/019:24:230
2976121240,8sleep0974199cyclictest23:35:270
3088921090,8sleep0974199cyclictest21:23:110
175792930,5sleep117574-21unixbench_singl22:15:301
233032880,4sleep10-21swapper/121:48:551
974299792,13cyclictest1959-21taskset20:25:541
974299697,4cyclictest40550irq/92-i91520:45:081
974299681,15cyclictest4051-21taskset20:31:521
974299659,4cyclictest0-21swapper/123:50:421
974299642,43cyclictest25043-21taskset20:01:131
974299641,43cyclictest32268-21ssh21:57:541
974299639,34cyclictest0-21swapper/121:21:211
974299632,9cyclictest0-21swapper/100:25:241
9742996322,37cyclictest27220-21tune2fs00:40:161
974299631,45cyclictest25849-21ssh22:58:201
974299631,45cyclictest0-21swapper/121:36:461
9742996312,35cyclictest169802chrt22:49:271
974299629,41cyclictest0-21swapper/121:31:331
974299622,4cyclictest0-21swapper/121:26:161
9742996115,26cyclictest22-21ksoftirqd/120:11:551
974299611,43cyclictest17203-21ssh23:55:501
974299609,5cyclictest0-21swapper/100:32:381
974299593,49cyclictest18346-21diskstats19:45:151
974299591,15cyclictest412-21chrt20:24:251
974299591,14cyclictest3748-21switchtime00:15:301
974299591,11cyclictest0-21swapper/122:27:051
68202590,2sleep06821-21sh22:05:140
974299585,45cyclictest14876-21iostat_ios19:35:201
974299584,47cyclictest6270-21diskstats23:45:171
974299584,47cyclictest6270-21diskstats23:45:161
974299582,5cyclictest22579-21iostat00:35:181
974299582,13cyclictest17548-21diskmemload23:22:561
974299582,12cyclictest0-21swapper/100:10:101
974299581,6cyclictest21975-21ssh00:00:451
9742995814,28cyclictest6521-21aten_r4power_en22:05:101
9742995812,4cyclictest0-21swapper/122:36:131
974299581,14cyclictest13547-21taskset20:57:441
974299578,4cyclictest40550irq/92-i91521:44:371
974299576,5cyclictest0-21swapper/122:20:431
974299572,13cyclictest5483-21ssh23:44:461
974299571,8cyclictest6741-21sh00:53:301
974299571,13cyclictest19992-21ntpq23:25:261
9742995710,3cyclictest0-21swapper/100:22:031
974299569,6cyclictest762-21tr23:05:271
974299569,6cyclictest133422chrt22:11:181
974299568,4cyclictest40550irq/92-i91523:35:221
974299563,7cyclictest2645-21snmpd20:36:171
974299563,11cyclictest15880-21taskset21:05:111
974299562,7cyclictest1443-21ssh22:00:021
974299562,4cyclictest0-21swapper/100:45:261
974299562,11cyclictest26072-21ntp_states00:05:221
974299561,14cyclictest12221-21ssh22:44:321
974299561,13cyclictest28760-21ssh23:00:321
974299559,5cyclictest25434-21ssh21:17:211
974299555,6cyclictest199542chrt21:11:291
974299551,7cyclictest3302-21runrttasks23:14:371
974299542,9cyclictest29611-21df_inode20:15:161
974299542,7cyclictest2522-21ssh22:34:371
974299541,14cyclictest13571-21ssh23:19:281
974299533,7cyclictest24147-21df_inode23:30:141
9742995312,36cyclictest25571-21/usr/sbin/munin20:05:271
974299531,12cyclictest17548-21diskmemload22:53:231
974299521,6cyclictest27649-21sh21:53:141
974299521,13cyclictest139362chrt21:00:031
974299513,42cyclictest6708-21diskstats20:40:161
974299512,6cyclictest21652-21latency_hist19:55:011
974299511,10cyclictest22341-21cat19:55:191
9742994911,6cyclictest13015-21kernelversion19:30:211
974299484,9cyclictest10467-21diskstats20:50:151
974299482,7cyclictest16665-21hddtemp_smartct19:40:171
9741994423,6cyclictest3-21ksoftirqd/023:59:190
114082430,4sleep0111rcuc/023:50:210
974199428,5cyclictest81rcu_preempt22:25:090
974199381,32cyclictest17548-21diskmemload23:41:550
9741993810,14cyclictest17524-21sh22:50:010
52872381,4sleep02206-21dbus-daemon22:36:310
261692381,33sleep026211-21latency20:05:200
974199372,5cyclictest9718-21diskstats23:15:160
974199372,22cyclictest22222-21/usr/sbin/munin00:35:140
974199362,4cyclictest81rcu_preempt21:31:320
974199361,8cyclictest0-21swapper/000:10:290
974199361,23cyclictest20889-21ssh00:00:160
974199361,22cyclictest24513-21taskset23:30:210
974199361,21cyclictest12342-21pluginstate22:10:260
974199352,4cyclictest22683-21ssh21:48:010
9741993516,4cyclictest23382-21ssh22:55:240
9741993510,13cyclictest6040-21aten_r4power_vo23:45:140
9741993510,13cyclictest6040-21aten_r4power_vo23:45:130
974199344,8cyclictest25796-21iostat_ios00:05:170
974199344,4cyclictest81rcu_preempt22:32:410
974199343,4cyclictest81rcu_preempt21:28:000
974199343,18cyclictest12081-21date00:25:010
974199342,7cyclictest0-21swapper/021:51:550
9741993424,7cyclictest0-21swapper/000:15:150
974199342,20cyclictest3302-21runrttasks23:23:430
974199341,30cyclictest0-21swapper/023:04:360
974199339,12cyclictest3-21ksoftirqd/000:31:590
974199331,29cyclictest0-21swapper/000:41:160
974199331,10cyclictest0-21swapper/023:12:370
54592330,7sleep0974199cyclictest22:03:520
974199327,13cyclictest0-21swapper/020:48:000
974199324,8cyclictest11921-21diskstats19:30:030
974199323,4cyclictest81rcu_preempt00:25:250
9741993225,5cyclictest0-21swapper/019:41:560
974199322,26cyclictest4034-21perl00:50:170
9741993213,6cyclictest8671-21iostat22:40:210
974199321,28cyclictest0-21swapper/022:45:160
183512321,5sleep00-21swapper/022:16:350
133642321,5sleep00-21swapper/020:55:520
974199312,4cyclictest81rcu_preempt21:56:030
974199312,4cyclictest81rcu_preempt21:35:240
974199311,4cyclictest81rcu_preempt23:26:090
974199311,4cyclictest81rcu_preempt20:35:320
974199311,28cyclictest0-21swapper/020:40:550
32532310,3sleep0111rcuc/020:30:190
974199308,19cyclictest0-21swapper/019:35:160
974199306,12cyclictest2216-21taskset20:28:270
974199303,13cyclictest15315-21iostat21:40:190
974199302,3cyclictest81rcu_preempt23:05:290
974199302,14cyclictest18122-21diskstats21:10:130
974199301,6cyclictest24707-21runrttasks21:16:180
974199301,4cyclictest81rcu_preempt19:52:470
974199301,27cyclictest0-21swapper/020:53:160
9741993012,5cyclictest31502-21df20:20:140
974199301,14cyclictest23018-21unixbench_singl19:55:300
9741993010,4cyclictest0-21swapper/022:20:060
6632301,5sleep00-21swapper/000:45:510
155042301,5sleep00-21swapper/021:03:250
974199291,24cyclictest171912sleep021:06:270
974199291,18cyclictest0-21swapper/019:48:300
974199286,4cyclictest81rcu_preempt20:05:000
974199282,4cyclictest81rcu_preempt20:15:120
974199279,5cyclictest27482-21aten_r4power_en20:10:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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