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2026-07-10 - 14:24

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 00:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
199719911411110,21cyclictest0-21swapper/019:26:300
196582564518,31sleep00-21swapper/019:22:160
199052495450,31sleep10-21swapper/119:24:541
1997299133125,5cyclictest0-21swapper/119:26:301
1239921130,5sleep112398-21wc21:55:011
292312780,4sleep01997199cyclictest19:45:270
164622600,3sleep016460-21turbostat20:40:000
303122450,4sleep00-21swapper/019:50:110
232382400,6sleep023222-21awk20:55:260
19971994024,5cyclictest3-21ksoftirqd/023:35:450
69092390,4sleep06904-21needreboot00:30:240
19971993923,5cyclictest3-21ksoftirqd/000:35:030
19971993910,6cyclictest30829-21turbostat00:10:000
19972993811,8cyclictest306842chrt00:08:451
19971993823,5cyclictest3-21ksoftirqd/022:45:110
19971993822,6cyclictest3-21ksoftirqd/022:16:140
1997299377,8cyclictest13942-21timerandwakeup20:30:291
1997299377,8cyclictest13942-21timerandwakeup20:30:291
1997299372,18cyclictest22547-21df20:55:121
19971993722,5cyclictest3-21ksoftirqd/022:09:350
19971993721,6cyclictest3-21ksoftirqd/022:22:320
19971993720,6cyclictest3286-21runrttasks22:43:160
19971993714,8cyclictest3-21ksoftirqd/023:03:030
19971993714,8cyclictest3-21ksoftirqd/021:57:520
1997299369,8cyclictest175842chrt22:05:491
19971993614,8cyclictest3-21ksoftirqd/022:59:410
19971993614,8cyclictest3-21ksoftirqd/019:59:450
19971993614,7cyclictest3-21ksoftirqd/023:51:540
19971993610,13cyclictest3-21ksoftirqd/023:41:190
19971993518,6cyclictest27534-21sort22:35:010
19971993513,7cyclictest3-21ksoftirqd/020:09:160
19971993512,8cyclictest3-21ksoftirqd/021:37:480
17222351,5sleep01744-21kernelversion21:25:230
19971993418,5cyclictest20310-21latency_hist20:50:010
19971993415,7cyclictest13195-21runrttasks00:46:110
19971993413,8cyclictest10121-21python20:20:270
19971993413,7cyclictest3-21ksoftirqd/021:16:380
19971993413,6cyclictest20496-21aten_r4power_vo20:50:110
19971993411,6cyclictest3-21ksoftirqd/021:20:300
19972993319,10cyclictest3888-21sed22:55:311
19971993321,3cyclictest0-21swapper/020:28:190
19971993319,4cyclictest21972-21sort23:45:170
19971993318,5cyclictest25522-21cron22:30:010
19971993317,6cyclictest553-21sort00:15:120
19971993317,6cyclictest27711-21runrttasks19:40:500
19971993317,6cyclictest26267-21ls21:05:140
19971993316,6cyclictest14223-21hddtemp_smartct00:50:190
19971993316,6cyclictest14223-21hddtemp_smartct00:50:190
19971993312,7cyclictest3-21ksoftirqd/023:05:300
19971993312,6cyclictest3-21ksoftirqd/022:52:430
19971993312,6cyclictest3-21ksoftirqd/021:50:570
1997199331,21cyclictest9760-21runrttasks23:11:240
19971993310,8cyclictest11565-21gdbus23:58:160
221712321,27sleep122175-21irqstats23:45:211
19971993218,4cyclictest3-21ksoftirqd/019:34:240
19971993216,6cyclictest8967-21cpuspeed_turbos21:45:120
19971993212,6cyclictest3-21ksoftirqd/022:11:340
19971993210,7cyclictest3-21ksoftirqd/023:28:110
19971993210,7cyclictest3-21ksoftirqd/023:21:270
19971993210,7cyclictest3-21ksoftirqd/021:43:330
71272311,26sleep17210-21memory23:05:231
312712311,26sleep131341-21fschecks_count00:10:171
19972993118,9cyclictest28089-21cat21:10:101
1997199318,8cyclictest3791-21memory21:30:210
19971993117,5cyclictest0-21swapper/021:10:270
19971993116,5cyclictest11565-21gdbus22:02:460
19971993116,5cyclictest11565-21gdbus22:02:450
19971993114,6cyclictest2387-21basename00:20:120
19971993113,6cyclictest4341-21aten_r4power_en00:25:140
19971993111,6cyclictest3-21ksoftirqd/021:04:000
19971993111,6cyclictest3-21ksoftirqd/020:12:470
19971993110,6cyclictest3-21ksoftirqd/000:42:070
183112311,26sleep118432-21df22:10:111
105842311,5sleep10-21swapper/120:22:321
1997299302,24cyclictest17613-21seq20:40:261
19972993019,7cyclictest17665-21sort23:35:001
19972993011,6cyclictest2896-21watchsnmpd20:01:001
1997199306,13cyclictest3-21ksoftirqd/023:32:560
1997199302,14cyclictest3-21ksoftirqd/019:39:550
19971993015,5cyclictest8149-21gzip20:15:250
19971993012,9cyclictest0-21swapper/000:03:000
171282301,5sleep00-21swapper/020:40:170
102092301,25sleep110221-21df_inode00:40:141
95132291,4sleep10-21swapper/100:37:351
37062291,5sleep10-21swapper/100:20:461
324522291,5sleep00-21swapper/000:12:360
291312291,5sleep10-21swapper/122:38:311
19972992920,5cyclictest20504-21fschecks_time22:15:211
1997299291,5cyclictest81rcu_preempt19:59:441
1997299291,4cyclictest81rcu_preempt23:51:541
1997299291,4cyclictest81rcu_preempt23:03:031
1997299291,4cyclictest81rcu_preempt22:41:061
19971992915,4cyclictest11565-21gdbus22:38:040
19971992913,5cyclictest2166-21memory20:00:220
19971992911,3cyclictest0-21swapper/023:15:200
76962281,5sleep10-21swapper/100:33:111
65302281,5sleep10-21swapper/121:38:171
63512281,4sleep16453-21cat20:10:291
5112281,5sleep10-21swapper/122:49:151
278382281,5sleep10-21swapper/119:42:081
272572281,5sleep10-21swapper/122:33:331
259242281,5sleep10-21swapper/119:37:001
252142281,5sleep10-21swapper/122:26:511
241112281,5sleep10-21swapper/119:32:381
232892281,5sleep10-21swapper/122:21:181
210822281,5sleep10-21swapper/123:41:391
1997299284,4cyclictest81rcu_preempt23:58:161
1997299283,4cyclictest81rcu_preempt20:09:161
1997299282,4cyclictest81rcu_preempt20:35:381
1997299281,4cyclictest81rcu_preempt21:57:521
192892281,4sleep10-21swapper/123:37:461
158622281,4sleep10-21swapper/122:02:241
158622281,4sleep10-21swapper/122:02:241
154302281,5sleep10-21swapper/123:26:401
150942281,5sleep10-21swapper/100:51:291
150942281,5sleep10-21swapper/100:51:281
136542281,5sleep10-21swapper/123:22:381
126362281,5sleep10-21swapper/120:29:221
119152281,5sleep10-21swapper/123:19:151
68722271,5sleep10-21swapper/121:40:061
28932271,5sleep10-21swapper/121:29:391
274472271,5sleep10-21swapper/121:06:541
22322271,5sleep10-21swapper/122:52:251
217142271,5sleep10-21swapper/120:51:001
1997299271,4cyclictest81rcu_preempt21:16:391
1997299271,13cyclictest4388-21awk21:30:311
19972992711,12cyclictest0-21swapper/121:00:281
19971992713,5cyclictest13381-21hwlatdetect20:30:180
19971992713,5cyclictest13381-21hwlatdetect20:30:180
184962271,5sleep10-21swapper/120:45:031
287832261,5sleep10-21swapper/100:03:291
1997299263,21cyclictest0-21swapper/120:15:561
1997299261,9cyclictest0-21swapper/121:21:221
19972992614,7cyclictest4982-21cat00:25:251
19972992612,6cyclictest9447-21missed_timers21:45:231
118502261,5sleep10-21swapper/100:45:121
1997299258,13cyclictest0-21swapper/119:51:141
1997299253,4cyclictest81rcu_preempt23:12:511
19972992517,5cyclictest1002-21uname00:15:211
1997299251,4cyclictest81rcu_preempt19:49:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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