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2026-06-02 - 00:40

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 Mon Jun 01, 2026 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15099911111079,28cyclictest6067-21cat07:35:001
15099910821073,6cyclictest0-21swapper/107:25:081
12372668621,31sleep10-21swapper/107:22:491
5882644597,31sleep00-21swapper/007:20:260
1508992444,6cyclictest0-21swapper/007:25:070
1508999963,32cyclictest6059-21apt-get07:35:010
72542760,3sleep1201rcuc/109:00:291
105692710,5sleep00-21swapper/007:45:160
87762450,8sleep1150999cyclictest07:40:161
247992400,9sleep0150899cyclictest11:15:130
197602400,4sleep181rcu_preempt08:10:121
158002401,35sleep115114-21/usr/sbin/munin10:50:221
54222361,4sleep011565-21gdbus10:23:470
228662362,4sleep122869-21irqstats12:35:201
231202351,4sleep011565-21gdbus08:19:270
1508993510,13cyclictest17778-21ls12:20:280
86112341,28sleep08775-21perl07:40:160
311942331,28sleep031364-21grep08:40:160
150899338,11cyclictest0-21swapper/010:05:210
144002330,4sleep0150899cyclictest12:13:040
1509993212,15cyclictest10322-21hddtemp_smartct09:10:161
1509993212,15cyclictest10322-21hddtemp_smartct09:10:161
14722321,4sleep01474-21/usr/sbin/munin11:40:100
92912311,26sleep09313-21/usr/sbin/munin10:35:000
160702311,4sleep116079-21iostat_ios09:25:201
1509993113,14cyclictest20106-21runrttasks12:28:411
150899316,12cyclictest0-21swapper/012:25:200
150899314,9cyclictest6940-21memory07:35:230
1508993113,6cyclictest30366-21watchsnmpd10:05:000
295692301,5sleep00-21swapper/011:25:340
222892301,5sleep00-21swapper/011:08:060
1509993011,14cyclictest7973-21cut09:05:121
122982301,4sleep112302-21iostat_ios09:15:201
95842291,5sleep00-21swapper/009:09:150
50382291,4sleep00-21swapper/011:48:300
302792291,5sleep10-21swapper/108:35:401
221382291,5sleep10-21swapper/111:06:321
211612291,5sleep00-21swapper/008:13:380
19392291,5sleep10-21swapper/108:49:091
172482291,5sleep00-21swapper/008:01:560
1509992919,6cyclictest13286-21aten_r4power_en10:45:101
150899296,4cyclictest1534-21unixbench_singl08:45:300
150899294,18cyclictest29208-21users12:50:280
150899291,15cyclictest18567-21/usr/sbin/munin08:05:280
1508992911,14cyclictest0-21swapper/008:29:290
94582281,5sleep00-21swapper/010:35:110
86122281,5sleep10-21swapper/111:56:391
72862281,5sleep10-21swapper/110:28:391
71082281,5sleep00-21swapper/010:26:470
32432281,5sleep10-21swapper/110:15:581
319492281,5sleep10-21swapper/110:07:051
31522281,5sleep10-21swapper/111:43:331
303982281,5sleep00-21swapper/008:36:550
265002281,5sleep10-21swapper/109:54:101
256422281,5sleep00-21swapper/012:42:350
220762281,5sleep10-21swapper/112:34:431
205472281,5sleep00-21swapper/011:04:310
169162281,5sleep00-21swapper/009:27:090
163752281,5sleep10-21swapper/112:19:061
15662281,5sleep10-21swapper/110:14:031
150999285,17cyclictest27710-21iostat_ios08:30:201
150999285,17cyclictest27710-21iostat_ios08:30:201
150999283,18cyclictest30457-21diskstats11:30:161
150899289,10cyclictest0-21swapper/010:10:120
150899287,4cyclictest11565-21gdbus09:55:410
150899284,17cyclictest27101-21memory11:20:240
150899284,17cyclictest27101-21memory11:20:240
150899282,23cyclictest0-21swapper/010:40:520
150899282,18cyclictest15399-21df_inode10:50:140
1508992815,8cyclictest14236-21diskstats07:55:140
145832281,5sleep00-21swapper/010:46:110
143552281,5sleep10-21swapper/112:12:371
113922281,5sleep00-21swapper/009:13:300
113922281,5sleep00-21swapper/009:13:300
109902281,5sleep00-21swapper/012:05:080
107432281,4sleep00-21swapper/012:04:070
77802271,5sleep10-21swapper/107:36:301
67382271,4sleep10-21swapper/111:51:411
66382271,5sleep00-21swapper/011:50:370
323272271,5sleep10-21swapper/108:42:151
318462271,3sleep013639-21kworker/0:211:34:460
296342271,5sleep10-21swapper/111:26:151
293462271,5sleep10-21swapper/112:51:471
264712271,5sleep00-21swapper/009:53:540
258262271,4sleep10-21swapper/111:15:561
249862271,4sleep10-21swapper/108:24:091
244132271,5sleep00-21swapper/009:46:570
243892271,5sleep10-21swapper/109:46:431
218452271,5sleep00-21swapper/012:32:170
208332271,5sleep10-21swapper/109:38:561
183502271,5sleep10-21swapper/110:56:211
175192271,5sleep00-21swapper/009:30:130
158282271,5sleep10-21swapper/108:00:061
150999279,14cyclictest0-21swapper/109:30:511
150999273,9cyclictest26706-21diskstats11:20:161
150999273,9cyclictest26706-21diskstats11:20:161
150999273,18cyclictest2507-21diskstats08:50:141
150999273,17cyclictest27046-21diskstats09:55:171
150899272,20cyclictest12347-21df07:50:130
150899271,22cyclictest11565-21gdbus11:11:300
150899271,14cyclictest26867-21ntpdc12:45:230
150899271,14cyclictest16438-21seq12:19:450
1508992710,13cyclictest248442chrt08:22:400
139282271,5sleep10-21swapper/107:55:031
135922271,5sleep10-21swapper/107:53:091
125482271,5sleep10-21swapper/112:08:221
108172271,4sleep10-21swapper/110:36:211
10782271,5sleep10-21swapper/111:37:511
265752261,5sleep10-21swapper/108:26:081
184572261,5sleep00-21swapper/010:57:260
150999265,16cyclictest0-21swapper/108:15:221
150999263,17cyclictest14203-21iostat_ios09:20:191
1509992615,7cyclictest12053-21cat10:40:211
1509992614,7cyclictest28939-21diskstats10:00:141
150999261,21cyclictest10184-21/usr/sbin/munin07:45:281
150899269,5cyclictest11565-21gdbus10:15:130
150899269,14cyclictest20943-21cron09:40:000
150999259,4cyclictest17393-21sed12:20:221
150999258,13cyclictest3938-21aten_r4power_vo10:20:121
1509992517,5cyclictest22-21ksoftirqd/111:03:421
1509992514,7cyclictest27495-21cron12:47:011
150899259,5cyclictest24023-21grep12:40:000
1508992517,5cyclictest3-21ksoftirqd/009:02:450
1508992516,6cyclictest3-21ksoftirqd/009:45:000
150899251,11cyclictest11565-21gdbus09:22:210
1508992510,11cyclictest11565-21gdbus08:50:160
150999243,18cyclictest0-21swapper/111:46:081
1509992416,6cyclictest0-21swapper/108:56:531
1509992416,5cyclictest22-21ksoftirqd/112:02:431
1509992416,5cyclictest22-21ksoftirqd/110:32:101
1509992415,6cyclictest22-21ksoftirqd/111:12:001
150899248,5cyclictest7334-21cut11:55:120
1508992415,6cyclictest1284-21cron11:40:000
150899241,21cyclictest0-21swapper/009:15:110
150899241,19cyclictest5887-21cron09:00:000
150999232,17cyclictest18107-21fschecks_count08:05:191
150999232,17cyclictest0-21swapper/112:40:161
150999232,16cyclictest21712-21iostat09:40:181
1508992314,6cyclictest27340-21wc08:30:130
1508992314,6cyclictest27340-21wc08:30:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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