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2026-06-13 - 21:32

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 Sat Jun 13, 2026 12:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41489912331195,34cyclictest0-21swapper/007:25:150
41499912001174,21cyclictest721-21perl11:30:161
41499911011071,26cyclictest4398-21wget07:25:121
39302738691,32sleep00-21swapper/007:23:170
37112464419,29sleep10-21swapper/107:20:591
414899215195,15cyclictest0-21swapper/011:30:160
2358521230,5sleep0414899cyclictest11:05:130
301312411,4sleep030167-21idleruntime08:30:180
414899407,5cyclictest81rcu_preempt10:35:210
8142370,6sleep1810-21latency_hist08:40:021
81942351,30sleep08346-21tune2fs11:50:140
414999355,19cyclictest211ktimersoftd/110:58:371
304602351,30sleep011565-21gdbus11:22:580
292852351,4sleep029379-21/usr/sbin/munin09:55:110
4149993424,6cyclictest22-21ksoftirqd/109:52:171
4149993223,5cyclictest22-21ksoftirqd/112:49:501
4149993222,6cyclictest22-21ksoftirqd/110:30:071
4149993222,6cyclictest22-21ksoftirqd/110:03:191
4149993222,6cyclictest22-21ksoftirqd/108:44:071
4149993222,6cyclictest22-21ksoftirqd/108:11:571
4148993221,7cyclictest25237-21unixbench_singl08:15:290
54042311,3sleep15417-21iostat_ios08:50:171
4149993123,5cyclictest22-21ksoftirqd/109:49:501
4149993122,6cyclictest22-21ksoftirqd/111:15:491
4149993122,6cyclictest22-21ksoftirqd/110:15:501
4149993121,6cyclictest22-21ksoftirqd/110:44:081
4149993114,12cyclictest23597-21diskstats11:05:151
98562301,5sleep10-21swapper/110:28:581
414999304,9cyclictest20534-21diskstats08:05:151
414999304,9cyclictest20534-21diskstats08:05:151
414999304,19cyclictest2439-21diskstats11:35:151
4149993022,5cyclictest22-21ksoftirqd/108:29:051
4149993021,5cyclictest22-21ksoftirqd/112:31:231
4149993020,6cyclictest22-21ksoftirqd/112:28:091
4149993020,6cyclictest22-21ksoftirqd/112:06:371
4149993017,8cyclictest2225-21dbus-daemon07:35:161
4149993011,6cyclictest3286-21runrttasks11:51:541
414899304,7cyclictest0-21swapper/008:55:200
414899303,3cyclictest81rcu_preempt07:39:070
414899301,4cyclictest81rcu_preempt12:47:590
414899301,4cyclictest81rcu_preempt10:43:060
414899301,24cyclictest3957-21python08:45:280
414899301,23cyclictest26950-21ls12:40:140
4148993010,4cyclictest3-21ksoftirqd/011:39:470
4148993010,15cyclictest289152chrt09:52:530
40422301,5sleep10-21swapper/110:12:191
76602291,5sleep00-21swapper/010:20:350
61872291,5sleep00-21swapper/008:51:250
5712291,5sleep00-21swapper/008:38:010
4149992921,5cyclictest22-21ksoftirqd/112:13:551
4149992920,6cyclictest22-21ksoftirqd/111:42:061
4149992920,6cyclictest22-21ksoftirqd/111:10:551
4149992920,6cyclictest22-21ksoftirqd/108:21:251
4149992920,5cyclictest22-21ksoftirqd/109:57:491
4149992919,6cyclictest22-21ksoftirqd/108:32:411
4149992916,7cyclictest6998-21diskstats08:55:161
414999291,14cyclictest16416-21df09:20:141
414899299,5cyclictest14025-21smartctl12:05:160
414899291,4cyclictest81rcu_preempt09:12:300
4148992911,13cyclictest2225-21dbus-daemon08:26:010
271142291,5sleep00-21swapper/009:48:390
265122291,5sleep00-21swapper/011:11:060
250752291,5sleep00-21swapper/009:41:590
212842291,5sleep00-21swapper/009:31:440
21262291,5sleep00-21swapper/010:07:580
209842291,5sleep00-21swapper/010:57:200
205092291,5sleep10-21swapper/112:20:581
196562291,5sleep10-21swapper/109:29:201
177442291,5sleep00-21swapper/007:57:280
176662291,5sleep00-21swapper/009:23:070
167492291,5sleep00-21swapper/012:11:060
156792291,5sleep00-21swapper/007:50:320
133302291,5sleep00-21swapper/012:04:360
110482291,24sleep111134-21hddtemp_smartct07:40:181
82982281,4sleep00-21swapper/007:32:280
75072281,5sleep00-21swapper/011:47:480
42392281,23sleep10-21swapper/108:45:391
414999283,9cyclictest16069-21diskstats10:45:141
414999283,9cyclictest12301-21diskstats10:35:161
4149992819,5cyclictest22-21ksoftirqd/110:21:241
414899289,14cyclictest17522-21cat10:50:000
414899284,17cyclictest15246-21python09:15:270
414899282,14cyclictest0-21swapper/012:35:020
414899281,4cyclictest81rcu_preempt12:23:530
414899281,4cyclictest81rcu_preempt10:29:580
414899281,4cyclictest81rcu_preempt08:41:110
414899281,12cyclictest32057-21head11:25:290
39422281,5sleep00-21swapper/010:11:160
286162281,5sleep00-21swapper/011:18:300
236602281,5sleep00-21swapper/008:13:180
226682281,5sleep00-21swapper/012:28:550
191192281,5sleep00-21swapper/010:52:270
189182281,4sleep00-21swapper/012:19:060
157282281,5sleep10-21swapper/107:51:021
138362281,5sleep00-21swapper/007:45:540
138022281,5sleep10-21swapper/109:12:141
120452281,5sleep10-21swapper/109:08:331
119512281,5sleep00-21swapper/009:07:340
114072281,5sleep10-21swapper/111:59:201
82442271,5sleep10-21swapper/107:31:561
54912271,3sleep05601-21ls10:15:270
4149992720,4cyclictest40250irq/92-i91507:57:161
4149992710,14cyclictest30461-21runrttasks11:22:581
414899279,15cyclictest0-21swapper/008:22:220
414899279,12cyclictest4820-21memory11:40:230
414899272,12cyclictest11471-21ntp_states07:40:250
414899271,4cyclictest81rcu_preempt11:55:420
414899271,12cyclictest31263-21wget10:00:120
246162271,5sleep00-21swapper/012:34:410
233972271,5sleep10-21swapper/109:39:131
229392271,5sleep00-21swapper/011:03:000
217232271,5sleep00-21swapper/008:07:400
217232271,5sleep00-21swapper/008:07:390
214832271,5sleep10-21swapper/109:33:511
200362271,5sleep10-21swapper/108:04:391
194132271,5sleep00-21swapper/009:26:480
188762271,4sleep10-21swapper/112:18:411
155232271,5sleep10-21swapper/109:15:371
101152271,5sleep00-21swapper/010:30:050
414999264,7cyclictest12821-21diskstats07:45:161
414999263,7cyclictest25109-21diskstats12:35:131
4149992611,11cyclictest24558-21if_eth008:15:171
4149992610,12cyclictest0-21swapper/112:43:331
414899261,4cyclictest81rcu_preempt09:37:090
414899261,13cyclictest11565-21gdbus09:03:020
196502261,5sleep00-21swapper/008:00:360
414999252,11cyclictest0-21swapper/109:42:321
4149992517,5cyclictest22-21ksoftirqd/110:06:271
4149992516,5cyclictest22-21ksoftirqd/111:02:461
4149992515,6cyclictest2225-21dbus-daemon10:50:171
4149992514,7cyclictest2225-21dbus-daemon09:00:281
414899255,17cyclictest31509-21swap12:50:270
4149992417,4cyclictest22-21ksoftirqd/112:00:421
4149992414,6cyclictest22-21ksoftirqd/112:52:001
4149992413,7cyclictest2225-21dbus-daemon11:25:121
4149992313,6cyclictest6010-21/usr/sbin/munin11:45:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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