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2026-06-16 - 08:08

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 16, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
123819912681,7cyclictest2695-21snmpd20:30:221
123819911421115,23cyclictest2695-21snmpd19:25:091
119992592528,49sleep10-21swapper/119:21:341
120012562517,30sleep00-21swapper/019:21:360
1238099189167,17cyclictest0-21swapper/019:25:080
123809911799,15cyclictest0-21swapper/020:30:210
3068521160,7sleep01238099cyclictest20:10:220
1294721050,7sleep01238099cyclictest23:40:240
32572840,4sleep00-21swapper/021:50:130
273802810,8sleep00-21swapper/020:00:290
38262740,22sleep03-21ksoftirqd/020:25:160
320802341,28sleep032090-21ntp_states23:05:260
195042341,4sleep019599-21ntp_kernel_err19:40:210
195042341,4sleep019599-21ntp_kernel_err19:40:210
165432340,2chrt16545-21latency_hist21:00:001
1238099349,10cyclictest15760-21latency_hist23:50:000
46492321,4sleep04805-21cstates23:20:110
283142321,28sleep128318-21ntp_states22:55:251
12381993216,4cyclictest22-21ksoftirqd/120:15:281
1238099321,12cyclictest81rcu_preempt00:13:480
3692311,3sleep10-21swapper/123:08:391
306242311,3sleep129381-21/usr/sbin/munin23:00:301
1238099311,5cyclictest81rcu_preempt21:47:060
1238099311,5cyclictest81rcu_preempt21:41:110
30642302,5sleep10-21swapper/120:23:271
212022301,5sleep10-21swapper/100:03:401
149032301,25sleep114984-21sensors23:45:261
142332301,5sleep10-21swapper/120:52:081
1238199301,26cyclictest0-21swapper/100:41:021
1238099304,3cyclictest81rcu_preempt20:48:360
12380993012,5cyclictest12721-21df22:15:130
1238099301,18cyclictest8713-21fschecks_time23:30:180
89712291,5sleep10-21swapper/122:05:151
295572291,5sleep10-21swapper/120:06:161
286342291,5sleep00-21swapper/000:22:410
252672291,24sleep10-21swapper/119:55:261
251142291,5sleep00-21swapper/022:46:340
233492291,5sleep00-21swapper/022:42:420
229852291,5sleep00-21swapper/000:07:410
191792291,5sleep10-21swapper/123:57:191
182812291,6sleep00-21swapper/019:36:280
17292291,5sleep00-21swapper/000:36:550
171652291,5sleep00-21swapper/023:50:550
12381992910,6cyclictest27312chrt21:49:251
1238099299,5cyclictest21514-21ntp_states19:45:240
1238099292,5cyclictest81rcu_preempt22:25:210
12380992920,6cyclictest18484-21cut22:30:160
1238099291,4cyclictest81rcu_preempt22:59:360
1238099291,4cyclictest81rcu_preempt22:06:180
1238099291,4cyclictest81rcu_preempt00:50:420
1238099291,23cyclictest20791-21fschecks_time21:10:160
1238099291,19cyclictest0-21swapper/020:35:130
1238099291,18cyclictest0-21swapper/021:00:290
12380992910,6cyclictest246592cstates19:55:120
121452291,5sleep00-21swapper/022:13:430
116772291,5sleep00-21swapper/023:37:370
106202291,5sleep00-21swapper/020:43:390
98622281,5sleep10-21swapper/123:33:181
80022281,5sleep00-21swapper/023:28:280
60532281,5sleep10-21swapper/123:22:421
47602281,5sleep10-21swapper/120:26:281
46412281,5sleep10-21swapper/121:54:001
42332281,5sleep00-21swapper/023:18:290
42132281,5sleep10-21swapper/123:18:161
39242281,5sleep00-21swapper/000:43:500
308942281,5sleep00-21swapper/000:30:090
308072281,4sleep00-21swapper/023:02:020
297312281,5sleep00-21swapper/020:08:020
285952281,5sleep10-21swapper/100:22:181
238982281,5sleep00-21swapper/019:51:070
215042281,5sleep10-21swapper/122:38:131
21492281,5sleep10-21swapper/123:12:251
213482281,5sleep00-21swapper/022:36:360
198612281,5sleep00-21swapper/021:06:570
197742281,5sleep10-21swapper/122:34:441
19442281,5sleep00-21swapper/023:10:310
183542281,5sleep10-21swapper/119:37:101
1238199284,8cyclictest6409-21diskstats00:50:131
1238199281,23cyclictest12179-21users20:45:291
1238099281,15cyclictest7556-21needreboot22:00:200
1238099281,14cyclictest11564-21packagekitd21:20:120
120002281,5sleep10-21swapper/122:12:111
64122271,5sleep00-21swapper/021:57:520
55442271,5sleep00-21swapper/000:45:520
311922271,5sleep00-21swapper/021:37:280
29522271,5sleep00-21swapper/020:22:150
272652271,5sleep10-21swapper/121:25:381
202642271,5sleep10-21swapper/119:42:211
202642271,5sleep10-21swapper/119:42:211
184392271,5sleep10-21swapper/121:05:071
143312271,5sleep00-21swapper/020:53:090
136482271,4sleep10-21swapper/123:43:221
1238199273,18cyclictest25907-21diskstats22:50:141
1238099271,16cyclictest16768-21awk19:35:000
1238099271,13cyclictest26255-21df21:25:140
12380992710,6cyclictest28681-21ntp_states21:30:240
1238199264,16cyclictest25463-21munin-run22:50:011
1238199262,18cyclictest7392-21iostat22:00:171
12381992619,5cyclictest0-21swapper/120:04:321
12381992617,6cyclictest22-21ksoftirqd/100:19:481
12381992610,10cyclictest2225-21dbus-daemon21:17:201
1238099269,13cyclictest1200-21taskset20:19:540
1238099263,3cyclictest81rcu_preempt22:23:080
1238099262,20cyclictest26330-21missed_timers22:50:210
12380992617,5cyclictest26969-21idleruntime-cro00:20:000
77502251,5sleep10-21swapper/123:25:521
62672251,5sleep10-21swapper/121:56:221
1238199253,7cyclictest22095-21iostat_ios00:05:211
1238199253,16cyclictest29508-21hddtemp_smartct00:25:151
1238199252,20cyclictest0-21swapper/119:30:091
12381992517,5cyclictest2291-21irqbalance23:51:271
12381992517,5cyclictest22-21ksoftirqd/100:49:211
12381992516,6cyclictest22-21ksoftirqd/122:42:071
12381992516,6cyclictest22-21ksoftirqd/122:25:451
12381992516,6cyclictest22-21ksoftirqd/121:10:051
12381992516,6cyclictest22-21ksoftirqd/100:32:311
12381992514,6cyclictest24092-21ls00:10:221
1238099257,6cyclictest19903-21df00:00:130
1238099257,6cyclictest18005-21df23:55:120
12380992516,6cyclictest3-21ksoftirqd/000:27:590
1238199249,12cyclictest2225-21dbus-daemon20:39:521
1238199249,11cyclictest9499-21fschecks_time20:40:161
1238199242,17cyclictest14625-21df22:20:141
12381992416,5cyclictest22-21ksoftirqd/121:32:261
12381992416,5cyclictest22-21ksoftirqd/121:22:331
12381992415,6cyclictest22-21ksoftirqd/123:36:301
12381992414,6cyclictest13270-21ntp_states22:15:231
1238199241,19cyclictest21945-21users19:45:291
1238199241,19cyclictest1326-21python00:35:281
12381992410,11cyclictest0-21swapper/121:35:321
12380992415,6cyclictest0-21swapper/021:15:100
1238099241,4cyclictest81rcu_preempt20:56:210
12381992315,5cyclictest22-21ksoftirqd/121:42:431
12381992314,5cyclictest17395-21ntp_states21:00:231
1238199221,16cyclictest2695-21snmpd19:50:131
12381992112,5cyclictest30115-21/usr/sbin/munin20:10:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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