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2026-08-28 - 00:46

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 Thu Aug 27, 2026 12:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
151649912601215,26cyclictest22261-21iostat_ios07:40:181
151639911941162,22cyclictest0-21swapper/007:25:040
151649911511141,7cyclictest0-21swapper/107:25:051
142392569519,37sleep00-21swapper/007:20:250
148332464418,32sleep10-21swapper/107:22:061
1516399174149,22cyclictest0-21swapper/007:40:180
288792770,4sleep1211ktimersoftd/112:15:181
99212640,7sleep01516399cyclictest08:34:010
269522420,5sleep1201rcuc/110:45:121
15164993727,6cyclictest30359-21cron10:55:001
15164993726,6cyclictest10780-21iostat_ios08:35:191
15164993713,5cyclictest40250irq/92-i91510:40:001
195152351,29sleep111564-21packagekitd07:34:321
1516499351,11cyclictest81rcu_preempt12:44:121
15163993517,5cyclictest3-21ksoftirqd/009:34:100
22332331,9sleep10-21swapper/108:13:191
1516499337,4cyclictest81rcu_preempt11:25:291
1516399339,7cyclictest2225-21dbus-daemon11:17:050
1516399338,12cyclictest12614-21basename08:40:180
1516399335,3cyclictest81rcu_preempt12:42:510
1516399335,13cyclictest11565-21gdbus12:45:160
15163993323,6cyclictest11774-21wget10:05:120
1516399332,20cyclictest19441-21munin-run09:00:000
1516399332,11cyclictest0-21swapper/007:58:220
1516499321,6cyclictest0-21swapper/112:50:271
1516399327,13cyclictest30073-21pidof10:52:000
1516399323,15cyclictest6728-21diskstats08:25:140
326532311,4sleep132658-21irqstats12:25:181
15164993126,3cyclictest22-21ksoftirqd/111:25:001
1516499312,17cyclictest24032-21hddtemp_smartct07:45:171
15164993116,4cyclictest22-21ksoftirqd/111:13:091
1516499311,12cyclictest0-21swapper/112:30:021
1516399317,8cyclictest2225-21dbus-daemon10:17:040
1516399313,16cyclictest0-21swapper/011:03:180
1516399311,5cyclictest81rcu_preempt12:23:190
15163993113,5cyclictest18148-21diskstats07:30:140
15163993113,5cyclictest15420-21df11:40:130
15163993112,6cyclictest30018-21pidof12:20:000
1516399311,26cyclictest10452-21taskset12:50:490
1516399311,25cyclictest2337-21wget09:40:120
15163993111,7cyclictest0-21swapper/008:47:280
141742311,3sleep014247-21/usr/sbin/munin11:35:280
14152311,5sleep10-21swapper/109:35:291
37132301,5sleep10-21swapper/109:41:441
32222301,5sleep00-21swapper/012:34:170
1516499304,4cyclictest81rcu_preempt11:58:311
1516499302,16cyclictest12547-21ntp_states10:05:251
1516499302,11cyclictest3286-21runrttasks11:40:561
15164993020,6cyclictest20467-21grep10:25:281
1516499301,5cyclictest81rcu_preempt10:43:321
1516499301,4cyclictest81rcu_preempt12:50:011
1516499301,15cyclictest31254-21/usr/sbin/munin08:05:291
1516399303,13cyclictest951-21df_inode08:10:110
1516399302,14cyclictest902-21iostat_ios09:35:190
1516399302,14cyclictest25184-21df10:40:120
1516399302,14cyclictest12046-21memory11:30:210
15163993011,6cyclictest5922-21munin-run09:50:000
15163993011,6cyclictest17839-21ntp_states11:45:260
15163993010,6cyclictest14427-21ntp_states10:10:250
1516399300,4cyclictest81rcu_preempt09:25:280
115272301,4sleep111565-21gdbus10:04:471
49092291,5sleep00-21swapper/012:37:120
319182291,5sleep00-21swapper/010:56:430
283582291,5sleep00-21swapper/010:48:420
280902291,5sleep10-21swapper/109:21:371
280902291,5sleep10-21swapper/109:21:371
250272291,5sleep00-21swapper/007:47:410
236812291,5sleep00-21swapper/012:00:280
205582291,5sleep00-21swapper/010:25:510
165442291,5sleep116632-21ntpq08:50:221
1516499295,4cyclictest81rcu_preempt10:32:001
1516499295,4cyclictest81rcu_preempt08:15:471
1516499292,14cyclictest0-21swapper/109:55:121
1516499291,5cyclictest0-21swapper/112:02:091
15164992914,4cyclictest3012-21cat11:05:271
1516399299,6cyclictest4928-21/usr/sbin/munin11:10:280
1516399294,16cyclictest0-21swapper/009:54:400
1516399294,13cyclictest20996-21taskset09:01:380
1516399293,13cyclictest21699-21cpuspeed_turbos09:05:120
1516399293,13cyclictest10128-21df_inode10:00:140
1516399292,15cyclictest26627-21/usr/sbin/munin07:50:290
1516399292,15cyclictest25542-21diskstats09:15:150
1516399292,14cyclictest2356-21hddtemp_smartct11:05:170
1516399292,14cyclictest10724-21/usr/sbin/munin08:35:170
1516399292,13cyclictest21070-21/usr/sbin/munin11:55:160
1516399291,4cyclictest81rcu_preempt12:27:030
1516399291,4cyclictest81rcu_preempt11:20:160
15163992911,6cyclictest22439-21seq10:30:510
15163992911,5cyclictest2225-21dbus-daemon12:13:220
15163992911,5cyclictest19757-21chrt07:35:040
1516399291,14cyclictest24717-21cron10:40:000
1516399291,13cyclictest633-21wc08:10:010
15163992910,5cyclictest10079-21irqstats11:25:210
59562281,5sleep10-21swapper/108:21:501
47842281,5sleep10-21swapper/112:35:571
320562281,5sleep10-21swapper/110:58:071
307122281,5sleep10-21swapper/108:01:061
205152281,4sleep00-21swapper/011:54:090
155542281,5sleep10-21swapper/108:48:471
1516499284,8cyclictest19186-21diskstats11:50:161
1516499283,4cyclictest81rcu_preempt10:24:581
1516499283,19cyclictest23969-21iostat_ios09:10:211
1516499282,6cyclictest0-21swapper/110:14:331
1516499282,4cyclictest81rcu_preempt09:51:281
15164992815,10cyclictest22-21ksoftirqd/107:55:251
1516499281,15cyclictest12046-21memory11:30:211
1516399282,13cyclictest8743-21ntpdc09:55:230
1516399282,13cyclictest29979-21irqstats08:00:200
1516399281,14cyclictest24164-21/usr/sbin/munin09:10:250
1516399281,13cyclictest5873-21runrttasks08:20:560
1516399281,13cyclictest2225-21dbus-daemon09:22:150
1516399281,13cyclictest2225-21dbus-daemon09:22:140
14672281,5sleep10-21swapper/111:02:551
78002271,5sleep10-21swapper/108:26:271
70742271,5sleep10-21swapper/111:16:281
307972271,5sleep10-21swapper/109:30:011
270022271,5sleep10-21swapper/107:53:431
212102271,5sleep10-21swapper/109:03:531
1516499276,9cyclictest0-21swapper/111:45:141
1516499276,6cyclictest22-21ksoftirqd/109:25:161
1516499275,4cyclictest81rcu_preempt07:35:421
15164992717,5cyclictest5368-21sed09:45:291
1516499271,4cyclictest81rcu_preempt10:15:221
1516499271,23cyclictest13674-21fschecks_time11:35:151
1516399275,12cyclictest40250irq/92-i91508:16:170
1516399272,13cyclictest16441-21irqstats08:50:200
1516399272,12cyclictest2225-21dbus-daemon12:07:380
1516399272,12cyclictest17869-21/usr/sbin/munin10:20:170
135772271,5sleep10-21swapper/108:42:481
266502261,5sleep10-21swapper/109:16:531
1516499268,5cyclictest40250irq/92-i91512:10:191
1516499264,4cyclictest81rcu_preempt09:05:461
1516499264,3cyclictest81rcu_preempt12:21:441
1516499263,4cyclictest81rcu_preempt08:30:471
1516499262,10cyclictest25128-21iostat12:05:181
1516499259,5cyclictest40250irq/92-i91508:55:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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