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2026-06-02 - 23:48

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 792 highest latencies:
System rack9slot4s (updated Tue Jun 02, 2026 12:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
232279912081185,18cyclictest27665-21apt-get07:35:001
228332586517,53sleep00-21swapper/007:21:260
230142563518,30sleep10-21swapper/107:23:221
2322699160136,20cyclictest27631-21latency_hist07:35:010
271712370,5sleep1201rcuc/110:25:001
163172361,31sleep116321-21diskstats09:55:151
78052351,4sleep17825-21/usr/sbin/munin08:05:251
283712350,21sleep041ktimersoftd/007:35:180
229622351,5sleep122029-21/usr/sbin/munin08:45:281
2322699347,14cyclictest9460-21taskset11:00:460
2322699347,14cyclictest16703-21python11:20:280
260572331,27sleep026140-21memory10:20:220
105122331,28sleep010578-21processes12:30:290
100452331,10sleep00-21swapper/009:38:170
2322699325,14cyclictest0-21swapper/012:15:180
23226993221,6cyclictest14450-21cat08:25:000
2322799312,25cyclictest2624-21munin-run09:20:001
2322799311,28cyclictest0-21swapper/109:00:181
2322699318,7cyclictest124892chrt08:20:010
2322699316,5cyclictest81rcu_preempt09:04:210
2322699311,4cyclictest81rcu_preempt11:07:360
23226993110,5cyclictest0-21swapper/009:44:140
175182311,26sleep117525-21diskstats12:50:151
148622311,4sleep12225-21dbus-daemon12:41:561
252372300,3sleep1211ktimersoftd/108:51:001
2322699303,4cyclictest81rcu_preempt11:42:040
2322699303,4cyclictest81rcu_preempt10:00:580
2322699301,5cyclictest81rcu_preempt07:50:070
2322699301,4cyclictest81rcu_preempt12:01:050
2322699301,15cyclictest19908-21/usr/sbin/munin10:05:120
2322699300,4cyclictest81rcu_preempt11:59:310
220212301,5sleep00-21swapper/008:45:070
195302301,5sleep10-21swapper/110:04:001
18412301,5sleep00-21swapper/010:40:540
84622291,5sleep00-21swapper/008:07:410
60912291,5sleep00-21swapper/009:26:110
58302291,5sleep00-21swapper/010:52:130
46122291,5sleep10-21swapper/107:56:541
4012291,5sleep1584-21uptime07:45:291
3442291,5sleep00-21swapper/009:11:280
316152291,5sleep10-21swapper/107:44:551
311072291,5sleep10-21swapper/109:08:201
251462291,5sleep00-21swapper/010:18:470
249352291,5sleep10-21swapper/110:16:371
2322799294,9cyclictest20751-21iostat_ios08:40:201
2322799294,9cyclictest20751-21iostat_ios08:40:201
2322799292,23cyclictest14748-21irqstats09:50:181
23227992920,6cyclictest2695-21snmpd11:53:281
2322799291,24cyclictest11770-21chrt09:41:261
2322799291,14cyclictest21604-21diskstats11:35:151
2322699298,10cyclictest0-21swapper/009:20:240
2322699294,18cyclictest14135-21memory12:40:220
2322699291,4cyclictest81rcu_preempt09:19:130
23226992914,6cyclictest0-21swapper/012:39:400
229792291,5sleep00-21swapper/011:39:360
216472291,5sleep00-21swapper/008:42:480
216472291,5sleep00-21swapper/008:42:470
210972292,4sleep10-21swapper/111:34:321
208142291,5sleep00-21swapper/011:31:340
186662291,5sleep00-21swapper/012:52:090
175742291,23sleep00-21swapper/011:25:110
158472291,4sleep00-21swapper/009:54:560
145032291,5sleep00-21swapper/008:25:100
129302290,2sleep00-21swapper/011:10:270
81462281,5sleep10-21swapper/111:00:031
79632281,5sleep00-21swapper/009:31:080
76922281,5sleep10-21swapper/110:57:041
54222281,5sleep10-21swapper/112:16:481
4772281,5sleep10-21swapper/109:12:511
38862281,5sleep00-21swapper/010:46:290
324322281,5sleep10-21swapper/110:36:141
303732281,5sleep10-21swapper/111:58:101
287132281,5sleep00-21swapper/010:26:370
286152281,5sleep10-21swapper/110:25:351
271062281,5sleep10-21swapper/108:55:571
265132281,5sleep10-21swapper/111:47:031
2322799284,18cyclictest21967-21diskstats10:10:151
2322799282,21cyclictest8784-21df09:35:121
2322799281,23cyclictest6104-21munin-run10:54:591
2322699282,22cyclictest16180-21ntp_states12:45:240
23226992811,5cyclictest17207-21ntp_states08:30:240
23226992811,5cyclictest0-21swapper/010:59:510
2322699281,13cyclictest30258-21sort09:05:210
212952281,5sleep10-21swapper/110:07:501
20592281,5sleep10-21swapper/110:43:051
188952281,5sleep10-21swapper/111:26:061
180002281,4sleep10-21swapper/108:34:041
166352281,5sleep10-21swapper/112:45:311
158232281,5sleep10-21swapper/108:25:571
124032281,5sleep10-21swapper/108:19:361
33632271,3sleep00-21swapper/007:55:140
321812271,5sleep10-21swapper/112:02:151
305852271,5sleep00-21swapper/010:31:330
2322799273,18cyclictest16283-21iostat_ios11:20:211
23227992719,5cyclictest2937-21fschecks_time10:45:161
23227992717,6cyclictest22-21ksoftirqd/112:28:271
23227992717,6cyclictest18952chrt07:50:211
23227992716,6cyclictest4022-21ls09:20:271
2322699279,5cyclictest9590-21grep08:10:200
2322699271,4cyclictest81rcu_preempt08:01:120
2322699271,23cyclictest30076-21cpuspeed_turbos07:40:130
2322699271,22cyclictest283172chrt11:51:160
2322699271,14cyclictest32764-21mailstats07:45:250
2322699271,14cyclictest25239-21grep11:45:120
2322699271,13cyclictest31578-21sshd10:35:180
23226992711,13cyclictest0-21swapper/007:29:170
195992271,5sleep10-21swapper/108:36:111
138922271,5sleep00-21swapper/009:49:020
123952270,4sleep181rcu_preempt11:10:161
116042271,5sleep10-21swapper/111:08:331
110982271,5sleep10-21swapper/112:32:031
67312261,5sleep10-21swapper/108:04:111
232782261,5sleep00-21swapper/010:13:540
2322799261,22cyclictest2668-21grep12:10:221
23227992610,13cyclictest29728-21cron07:40:001
2322699261,13cyclictest26294-21http_loadtime08:55:180
2322699261,13cyclictest14716-21cut11:15:270
2322699261,12cyclictest480-21tune2fs12:05:160
184292261,4sleep00-21swapper/008:35:130
122722261,4sleep10-21swapper/109:45:101
2322799256,16cyclictest0-21swapper/111:15:111
23227992517,5cyclictest22-21ksoftirqd/108:21:201
23227992516,6cyclictest22-21ksoftirqd/110:33:311
23227992516,6cyclictest22-21ksoftirqd/109:32:341
2322699259,4cyclictest7872-21wget12:25:090
2322699251,4cyclictest81rcu_preempt09:56:280
23226992514,6cyclictest3149-21python12:10:270
23226992514,6cyclictest1974-21lldpad08:51:540
2322699251,15cyclictest0-21swapper/012:21:020
131142251,5sleep10-21swapper/112:38:271
2322799247,14cyclictest24489-21timerwakeupswit07:25:281
2322799243,17cyclictest24446-21unixbench_singl11:40:291
2322799243,17cyclictest0-21swapper/112:05:191
23227992417,4cyclictest22-21ksoftirqd/109:25:211
2322799241,19cyclictest0-21swapper/112:20:211
23227992314,5cyclictest9015-21tr08:10:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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