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2026-06-16 - 16:15

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 highest latencies:
System rack9slot4s (updated Tue Jun 16, 2026 12:59:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
268829912481218,25cyclictest4746-21ntp_states12:05:251
268819911821135,35cyclictest27502-21fschecks_time07:25:170
268829911121070,39cyclictest27259-21cstates07:25:141
265482555509,31sleep00-21swapper/007:22:040
268062489444,30sleep10-21swapper/107:24:461
2688199211190,18cyclictest0-21swapper/012:05:240
187812790,3sleep0111rcuc/009:50:260
81052720,4sleep041ktimersoftd/007:55:290
143222600,2sleep014323-21expr09:40:120
2688199417,5cyclictest81rcu_preempt09:00:130
96002400,2sleep09602-21aten_r4power_en12:20:100
2688199374,17cyclictest8499-21ntp_states12:15:260
2688199371,23cyclictest5304-21load09:15:210
26882993323,6cyclictest10273-21/usr/sbin/munin09:30:251
2688199331,13cyclictest87622aten_r4power_cu08:00:110
44172321,5sleep10-21swapper/109:14:371
26881993223,5cyclictest22588-21awk12:55:000
204442321,27sleep120593-21users11:20:311
2688199319,5cyclictest81rcu_preempt10:30:000
26881993116,8cyclictest30909-21diskstats11:50:160
2688199311,4cyclictest81rcu_preempt11:18:080
2688199311,4cyclictest81rcu_preempt10:51:260
26881993110,6cyclictest5260-21df07:50:140
197222311,5sleep10-21swapper/108:28:351
79632301,4sleep17998-21fschecks_count12:15:161
71222301,5sleep00-21swapper/012:11:030
2688199308,6cyclictest81rcu_preempt08:19:590
2688199308,11cyclictest16434-21sed12:35:310
2688199302,15cyclictest2903-21/usr/sbin/munin07:45:230
2688199301,4cyclictest81rcu_preempt09:29:350
26881993011,7cyclictest18977-21date12:45:010
26881993011,5cyclictest28025-21ntp_states10:15:220
179272301,4sleep117961-21idleruntime11:15:171
76602291,5sleep10-21swapper/110:47:531
319512291,5sleep10-21swapper/111:51:091
26882992913,5cyclictest4640-21cut09:15:101
26882992912,12cyclictest13193-21memory08:10:221
26882992910,15cyclictest0-21swapper/112:30:111
2688199293,13cyclictest7121-21iostat_ios09:20:220
2688199291,4cyclictest81rcu_preempt10:32:420
2688199291,4cyclictest81rcu_preempt08:08:050
26881992912,5cyclictest26493-21runrttasks11:38:100
2688199291,24cyclictest23018-21taskset08:35:310
2688199291,14cyclictest29431-21/usr/sbin/munin08:55:280
2688199291,13cyclictest23049-21runrttasks10:02:400
2688199291,13cyclictest11857-21aten_r4power_en11:00:100
26881992910,7cyclictest947-21runrttasks07:40:110
2688199290,4cyclictest81rcu_preempt11:25:540
22092291,5sleep00-21swapper/009:07:160
16282291,5sleep10-21swapper/111:58:491
140392291,5sleep00-21swapper/008:13:120
83922281,5sleep10-21swapper/109:25:091
82592281,5sleep10-21swapper/107:56:521
78202281,5sleep10-21swapper/109:20:451
59462280,4sleep1201rcuc/112:10:121
56772281,5sleep10-21swapper/110:41:461
311752281,4sleep00-21swapper/007:33:560
311582281,5sleep10-21swapper/107:33:461
308042281,5sleep10-21swapper/108:56:291
27692281,23sleep02788-21ntp_states12:00:230
2688299283,19cyclictest19289-21diskstats12:45:141
26882992819,6cyclictest1613-21unixbench_singl10:30:281
26881992811,6cyclictest11565-21gdbus12:34:370
2688199281,15cyclictest4727-21grep10:40:170
260062281,5sleep10-21swapper/110:10:231
253782281,4sleep00-21swapper/008:43:390
247932281,5sleep10-21swapper/110:06:151
185362281,5sleep00-21swapper/012:42:170
169262281,5sleep10-21swapper/111:11:281
122112281,5sleep10-21swapper/108:08:421
104102281,5sleep10-21swapper/108:04:301
102662281,5sleep00-21swapper/009:30:070
94322271,5sleep10-21swapper/110:51:471
33092271,5sleep10-21swapper/112:00:301
327262271,5sleep10-21swapper/109:01:471
286722271,4sleep10-21swapper/110:17:311
270812271,5sleep10-21swapper/108:46:491
2688299273,18cyclictest29398-21diskstats10:20:151
2688299272,13cyclictest0-21swapper/112:29:191
26882992718,5cyclictest22-21ksoftirqd/107:35:271
26882992717,6cyclictest29983-21seq11:45:271
2688199279,6cyclictest10509-21irqstats10:55:210
2688199278,14cyclictest273842chrt08:49:570
26881992719,5cyclictest0-21swapper/010:20:130
2688199271,4cyclictest81rcu_preempt11:32:220
2688199271,14cyclictest11565-21gdbus09:59:140
2688199271,12cyclictest7405-21unixbench_singl10:45:290
26881992710,4cyclictest711-21memory11:55:220
263572271,5sleep10-21swapper/111:36:471
229702271,5sleep10-21swapper/110:01:511
196312271,4sleep00-21swapper/008:27:380
178002271,5sleep10-21swapper/108:23:041
157842271,5sleep10-21swapper/108:16:531
155072271,5sleep10-21swapper/109:42:271
115742271,5sleep10-21swapper/110:59:321
42702261,5sleep10-21swapper/107:46:181
38542261,4sleep00-21swapper/010:37:300
2688299263,17cyclictest20269-21iostat_ios09:55:191
2688299262,12cyclictest0-21swapper/110:25:381
26882992617,6cyclictest22-21ksoftirqd/107:52:041
26882992616,6cyclictest23318-21wc11:30:111
26882992612,8cyclictest1527-21iostat_ios07:40:211
26882992610,13cyclictest22-21ksoftirqd/108:34:511
26881992615,7cyclictest32672-21grep07:35:300
2688199261,4cyclictest81rcu_preempt10:07:210
2688199261,4cyclictest81rcu_preempt08:20:100
2688199261,13cyclictest12436-21df09:35:140
2688199261,13cyclictest12436-21df09:35:140
226842261,5sleep10-21swapper/111:27:361
2688299252,19cyclictest0-21swapper/108:40:251
2688299252,17cyclictest3648-21users10:35:291
26882992518,4cyclictest22-21ksoftirqd/109:40:001
26882992518,4cyclictest22-21ksoftirqd/109:40:001
26882992517,5cyclictest22-21ksoftirqd/111:00:321
26882992515,6cyclictest28687-21sort08:50:301
26882992513,7cyclictest10391-21ntp_states12:20:231
2688199258,13cyclictest20077-21aten_r4power_en08:30:110
26881992517,5cyclictest3-21ksoftirqd/008:54:060
26881992516,6cyclictest3-21ksoftirqd/011:23:480
26881992514,7cyclictest1974-21lldpad11:48:250
2688199251,19cyclictest3025-21df_inode09:10:140
2688199251,12cyclictest27169-21latency_hist10:15:020
2688199251,12cyclictest13904-21cstates11:05:120
26881992510,11cyclictest12068-21kernelversion12:25:230
151752251,4sleep10-21swapper/112:35:021
26882992417,4cyclictest22-21ksoftirqd/108:35:121
26882992416,5cyclictest22-21ksoftirqd/112:51:121
26882992416,5cyclictest22-21ksoftirqd/111:06:381
26882992415,6cyclictest22-21ksoftirqd/109:49:141
2688199249,12cyclictest27278-21cut11:40:170
26881992415,6cyclictest3-21ksoftirqd/009:47:110
26881992414,6cyclictest1974-21lldpad11:12:530
2688299232,15cyclictest28588-21munin-run11:45:011
26882992315,4cyclictest18999-21grep09:50:291
26882992311,8cyclictest2225-21dbus-daemon09:06:251
2688299221,11cyclictest17584-21hddtemp_smartct12:40:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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