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2026-04-11 - 04:22

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 Apr 11, 2026 00:59:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
306819911231078,33cyclictest31422-21irqstats19:25:210
306829910871063,21cyclictest31457-21grep19:25:211
302792651605,31sleep10-21swapper/119:21:251
302482486439,33sleep00-21swapper/019:21:040
589021240,22sleep05889-21grep00:30:100
3130221000,5sleep1201rcuc/123:15:251
30172800,7sleep00-21swapper/021:00:150
159172800,6sleep13068299cyclictest00:06:191
232182730,5sleep041ktimersoftd/000:14:550
3068299622,30cyclictest0-21swapper/122:42:551
3068199617,23cyclictest0-21swapper/023:58:330
3068199611,15cyclictest0-21swapper/021:20:300
268942610,2sleep026893-21ssh22:37:320
30681995924,5cyclictest24490-21ntp_states00:15:240
30681995716,7cyclictest3-21ksoftirqd/023:41:030
30681995624,4cyclictest6155-21users22:15:310
3068199559,8cyclictest23065-21perl22:00:170
3068199551,4cyclictest19650-21ssh23:03:550
3068199549,8cyclictest390-21irqstats22:10:190
3068199541,26cyclictest1808-21ssh23:52:070
276672530,2sleep027663-21cut20:40:150
3068199528,7cyclictest20765-21iostat_ios00:45:200
3068199519,8cyclictest1586-21diskstats22:45:150
3068199511,11cyclictest7915-21ssh23:25:140
30681995110,8cyclictest30679-21cyclictest21:12:230
30681995110,5cyclictest0-21swapper/000:51:250
3068199509,5cyclictest0-21swapper/021:40:030
30681995010,8cyclictest30679-21cyclictest19:54:330
30681994912,5cyclictest0-21swapper/021:45:560
30681994911,5cyclictest0-21swapper/020:31:450
30681994911,5cyclictest0-21swapper/019:39:470
30681994910,5cyclictest0-21swapper/022:33:270
3068199489,5cyclictest0-21swapper/000:43:320
3068199488,5cyclictest0-21swapper/019:57:540
30681994811,5cyclictest0-21swapper/022:25:120
30681994810,5cyclictest0-21swapper/000:35:490
3068199479,13cyclictest0-21swapper/000:28:500
30681994710,5cyclictest0-21swapper/023:32:230
30681994710,5cyclictest0-21swapper/022:58:310
30681994710,5cyclictest0-21swapper/021:51:410
3068199469,5cyclictest0-21swapper/020:56:190
3068199459,5cyclictest0-21swapper/021:58:510
30681994511,5cyclictest0-21swapper/023:13:130
30681994315,7cyclictest3-21ksoftirqd/000:03:370
30681994315,7cyclictest3-21ksoftirqd/000:03:370
30681994311,5cyclictest0-21swapper/021:30:430
30681994311,5cyclictest0-21swapper/021:30:420
30681994311,5cyclictest0-21swapper/021:19:570
30681994310,5cyclictest0-21swapper/022:43:500
30681994210,28cyclictest0-21swapper/021:35:550
3068199408,5cyclictest0-21swapper/021:28:010
30681994024,5cyclictest27163-21cron20:40:010
30682993911,7cyclictest2206-21dbus-daemon22:19:491
30681993925,4cyclictest0-21swapper/020:00:240
30681993923,6cyclictest0-21swapper/023:16:370
180562390,3sleep10-21swapper/123:01:351
3068299382,24cyclictest0-21swapper/121:54:011
201232381,33sleep020195-21cut20:20:160
3068299372,31cyclictest32197-21perl23:50:151
30682993712,6cyclictest10563-21/usr/sbin/munin00:35:291
30681993728,6cyclictest0-21swapper/019:43:010
30681993717,6cyclictest3-21ksoftirqd/023:06:570
30681993717,6cyclictest3-21ksoftirqd/000:21:070
30681993715,7cyclictest3-21ksoftirqd/022:20:580
30682993627,6cyclictest0-21swapper/122:11:361
3068199362,4cyclictest0-21swapper/022:05:290
30681993615,7cyclictest3-21ksoftirqd/023:45:070
30682993525,6cyclictest823-21/usr/sbin/munin20:55:151
3068299352,29cyclictest0-21swapper/121:32:561
3068299352,29cyclictest0-21swapper/121:32:551
3068299351,5cyclictest10497-21ssh23:27:361
30681993514,6cyclictest3-21ksoftirqd/023:23:100
30681993514,6cyclictest3-21ksoftirqd/022:51:000
3068199351,14cyclictest14588-21irqstats00:05:220
175832351,30sleep117595-21rm00:41:321
139422351,3sleep113956-21ssh23:30:371
3068299342,21cyclictest0-21swapper/122:24:501
3068299341,19cyclictest0-21swapper/121:36:051
30681993410,8cyclictest18418-21hddtemp_smartct20:15:160
3068299335,25cyclictest5110-21fschecks_count19:40:151
3068299333,28cyclictest0-21swapper/100:28:161
3068299332,8cyclictest21344-21irqstats23:05:201
30682993325,6cyclictest0-21swapper/123:49:351
30682993325,5cyclictest30002-21cron23:14:591
30682993324,5cyclictest19791-21ssh21:56:271
30682993323,6cyclictest6899-21ssh23:24:221
3068299331,29cyclictest0-21swapper/121:43:351
3068199339,7cyclictest7252-21irqstats19:45:210
30681993311,6cyclictest0-21swapper/019:31:110
116582331,29sleep111672-21iostat_ios22:55:191
3068299326,7cyclictest40550irq/92-i91523:40:281
3068299322,15cyclictest8786-21munin-run00:00:021
30682993218,10cyclictest20395-21ssh00:45:141
30682993217,11cyclictest17552-21diskstats23:35:131
30682993213,4cyclictest40550irq/92-i91519:50:111
3068299321,29cyclictest0-21swapper/122:39:351
3068299321,29cyclictest0-21swapper/120:12:161
3068199329,7cyclictest22291-21iostat20:25:180
3068299319,18cyclictest0-21swapper/122:28:471
3068299313,8cyclictest9741-21iostat00:00:221
3068299313,8cyclictest9741-21iostat00:00:211
3068299312,24cyclictest21958-21ntp_states21:25:251
3068299311,5cyclictest25923-21kworker/1:300:20:471
3068299311,28cyclictest0-21swapper/122:47:361
3068299311,27cyclictest0-21swapper/100:13:051
3068299311,25cyclictest7273-21ssh00:30:361
30682993112,4cyclictest69672sleep122:50:221
3068199317,11cyclictest17728-21fschecks_time23:35:160
131832311,27sleep113193-21ssh21:16:091
326012301,5sleep00-21swapper/020:52:450
3068299307,6cyclictest40550irq/92-i91500:15:561
3068299307,5cyclictest40550irq/92-i91521:20:191
3068299307,5cyclictest40550irq/92-i91521:10:281
3068299304,6cyclictest5436-21/usr/sbin/munin21:05:261
3068299302,8cyclictest25215-21memory00:50:201
3068299301,27cyclictest0-21swapper/119:55:561
3068199308,11cyclictest5436-21/usr/sbin/munin21:05:270
3068199302,11cyclictest0-21swapper/020:45:120
30681993010,12cyclictest0-21swapper/020:11:310
231002301,5sleep10-21swapper/120:26:471
3068299299,5cyclictest40550irq/92-i91519:35:291
3068299298,5cyclictest40550irq/92-i91520:09:421
3068299296,5cyclictest40550irq/92-i91522:05:071
3068299295,5cyclictest40550irq/92-i91522:31:071
3068299293,6cyclictest2838-21fschecks_count21:00:151
3068299292,8cyclictest857-21munin-node19:30:071
3068299292,11cyclictest40550irq/92-i91520:31:451
3068299291,8cyclictest6147-21diskmemload22:04:031
3068299291,8cyclictest11631-21ssh21:48:391
3068199291,12cyclictest0-21swapper/020:05:140
30682992820,5cyclictest2403-21irqbalance19:45:161
30682992818,6cyclictest20354-21ls20:20:171
3068299281,7cyclictest29480-21expr20:45:121
3068299271,7cyclictest26802-21taskset20:36:141
3068299266,5cyclictest40550irq/92-i91520:00:241
3068299261,7cyclictest29151-21cat20:45:011
30682992415,5cyclictest490-21ls20:55:001
3068299241,19cyclictest2645-21snmpd20:16:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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