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2026-04-20 - 17:58

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 Apr 20, 2026 12:59:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
72669911791133,30cyclictest7535-21cpu07:25:121
72669911791133,30cyclictest7535-21cpu07:25:121
72669911011086,12cyclictest0-21swapper/109:10:271
71862564519,30sleep10-21swapper/107:24:441
71912562516,31sleep00-21swapper/007:24:470
72659910184,14cyclictest0-21swapper/007:25:130
72659910184,14cyclictest0-21swapper/007:25:130
202502940,7sleep00-21swapper/010:20:400
233322780,3sleep0111rcuc/011:30:460
87702730,4sleep0111rcuc/009:35:300
45632530,8sleep0726599cyclictest12:53:220
89422500,5sleep1201rcuc/109:35:321
323042500,8sleep0726599cyclictest09:26:290
108592480,9sleep0726599cyclictest11:18:430
201052410,7sleep0726599cyclictest09:14:560
48422401,35sleep14852-21ssh12:53:531
157682391,5sleep115779-21sh09:43:231
66432381,3sleep16653-21ssh10:07:001
726699376,5cyclictest81rcu_preempt12:13:051
726599372,19cyclictest31106-21munin-run11:40:000
726599371,23cyclictest26835-21ssh09:20:350
46512371,33sleep14662-21ssh10:38:561
726699369,6cyclictest0-21swapper/110:48:561
726599362,19cyclictest4901-21kernelversion10:05:230
213642363,4sleep181rcu_preempt10:55:281
109792365,4sleep081rcu_preempt07:30:290
726599351,22cyclictest18002-21perl07:50:160
7265993510,13cyclictest31427-21lockfile-remove10:00:000
60572354,4sleep10-21swapper/108:45:111
726699341,22cyclictest0-21swapper/112:29:061
726599341,26cyclictest40250irq/92-i91512:42:430
726599341,14cyclictest20966-21ssh09:15:170
316642341,4sleep12401-21NetworkManager11:06:001
7266993324,5cyclictest29743-21grep10:30:271
726599334,4cyclictest81rcu_preempt10:53:120
7265993317,13cyclictest3-21ksoftirqd/010:36:520
7265993313,6cyclictest19373-21ntp_states12:00:260
188382331,4sleep118852-21ssh10:53:271
726699325,5cyclictest81rcu_preempt10:12:131
726699321,5cyclictest81rcu_preempt11:04:241
7266993213,9cyclictest22-21ksoftirqd/111:23:531
7266993212,8cyclictest0-21swapper/112:00:361
726699321,10cyclictest81rcu_preempt11:35:121
726599328,13cyclictest0-21swapper/012:18:210
726599324,4cyclictest81rcu_preempt11:08:130
726599322,4cyclictest81rcu_preempt10:30:140
726599322,19cyclictest20352-21cron09:48:010
726599321,11cyclictest2225-21dbus-daemon11:45:110
252732321,3sleep115308-21diskmemload09:20:091
217102321,27sleep121764-21df_inode08:00:131
726699317,4cyclictest81rcu_preempt08:10:121
726699317,4cyclictest81rcu_preempt08:10:121
726699312,17cyclictest0-21swapper/109:47:061
726699311,9cyclictest12694-21ssh11:54:091
7266993116,5cyclictest22-21ksoftirqd/111:49:411
726699311,16cyclictest10004-21wget07:30:111
726599317,11cyclictest6072-21iostat_ios12:20:190
726599316,4cyclictest81rcu_preempt07:41:510
726599316,13cyclictest9233-21taskset08:50:390
726599313,5cyclictest81rcu_preempt09:44:450
726599311,4cyclictest81rcu_preempt10:48:320
7265993111,6cyclictest26947-21munin-run08:15:000
7265993111,6cyclictest26947-21munin-run08:14:590
726599311,12cyclictest13670-21taskset12:28:230
7265993110,6cyclictest23774-21hddtemp_smartct12:05:160
62412311,5sleep10-21swapper/111:14:021
274252310,9sleep1726699cyclictest09:55:181
247182310,9sleep1726699cyclictest10:25:291
223162311,26sleep122327-21df_inode09:50:141
162662311,5sleep10-21swapper/111:57:201
726699308,7cyclictest15308-21diskmemload12:34:501
726699307,12cyclictest40250irq/92-i91511:40:321
726699304,9cyclictest40250irq/92-i91508:28:161
726699304,10cyclictest22-21ksoftirqd/112:05:351
726699303,4cyclictest81rcu_preempt12:44:421
726699301,8cyclictest24642-21ssh11:32:401
726699301,4cyclictest81rcu_preempt11:15:071
7266993011,7cyclictest22695-21kworker/1:110:21:311
7266993011,4cyclictest22-21ksoftirqd/110:40:141
726599309,6cyclictest25414-21cut11:00:130
726599303,5cyclictest81rcu_preempt10:11:290
726599303,20cyclictest378-21python10:00:270
726599302,15cyclictest29696-21df_inode12:45:140
726599302,15cyclictest0-21swapper/009:50:300
726599302,14cyclictest6374-21iostat10:40:190
726599302,14cyclictest12587-21hddtemp_smartct11:20:180
726599302,13cyclictest32080-21irqstats11:40:220
726599302,13cyclictest13854-21df11:55:150
726599301,7cyclictest23189-21ssh12:38:130
726599301,7cyclictest23189-21ssh12:38:130
7265993012,5cyclictest81rcu_preempt08:35:000
7265993012,5cyclictest17524-21iostat11:25:190
7265993011,16cyclictest0-21swapper/011:10:580
325492301,5sleep10-21swapper/109:26:521
10532300,8sleep1726699cyclictest12:50:001
726699299,7cyclictest3286-21runrttasks07:56:541
726699298,18cyclictest0-21swapper/109:32:491
726699297,18cyclictest0-21swapper/112:35:551
726699297,18cyclictest0-21swapper/112:35:541
726699294,8cyclictest8540-21iostat_ios08:50:211
726699294,4cyclictest81rcu_preempt07:43:061
726699293,4cyclictest81rcu_preempt08:33:441
726699291,16cyclictest0-21swapper/112:20:251
726599299,16cyclictest0-21swapper/012:34:550
726599298,5cyclictest4187-21sh09:30:380
726599292,4cyclictest81rcu_preempt12:13:040
726599292,14cyclictest11806-21/usr/sbin/munin09:00:080
726599291,4cyclictest81rcu_preempt10:56:470
726599291,15cyclictest29763-21seq08:20:230
726599291,14cyclictest23992-21fschecks_time10:25:160
726599291,10cyclictest9624-21awk11:50:230
726599291,10cyclictest0-21swapper/008:48:520
38752291,5sleep10-21swapper/112:18:131
117122291,24sleep111806-21aten_r4power_vo09:00:101
726699289,15cyclictest0-21swapper/111:26:461
726699284,4cyclictest81rcu_preempt07:39:401
7265992811,5cyclictest11565-21gdbus07:47:240
7265992811,5cyclictest11284-21chrt08:57:280
726599281,14cyclictest20070-21/usr/sbin/munin07:55:160
726599281,11cyclictest13914-21cut10:15:110
7265992810,6cyclictest15418-21rm09:10:010
7265992810,14cyclictest227792chrt08:00:460
726699278,15cyclictest0-21swapper/110:15:571
726699278,15cyclictest0-21swapper/109:17:451
726699271,4cyclictest81rcu_preempt07:51:051
726699271,4cyclictest81rcu_preempt07:48:311
726699271,3cyclictest81rcu_preempt08:21:411
726599277,5cyclictest4489-21/usr/sbin/munin08:40:160
726599271,22cyclictest32584-21cron08:30:010
7265992710,5cyclictest23914-21if_eth008:05:190
285662271,5sleep10-21swapper/108:17:251
726699263,4cyclictest81rcu_preempt09:05:501
7266992617,5cyclictest3023-21sed08:35:241
7266992616,6cyclictest25090-21cat08:10:001
7266992610,4cyclictest0-21swapper/110:01:391
726599260,3cyclictest81rcu_preempt08:16:110
726699252,19cyclictest0-21swapper/108:55:161
726599251,13cyclictest3867-21taskset08:38:400
726599251,13cyclictest12148-21cstates07:35:130
726699242,8cyclictest5900-21munin-run08:45:001
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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