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2026-08-31 - 10:26

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 Mon Aug 31, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37689912501202,28cyclictest11462-21users19:40:311
33042584536,33sleep00-21swapper/019:20:480
34712563518,30sleep10-21swapper/119:22:271
376799125101,7cyclictest0-21swapper/019:40:300
3767998014,31cyclictest5402-21head20:50:290
376799772,41cyclictest16658-21ntp_states19:55:250
376799751,41cyclictest10885-21grep21:05:280
376799721,41cyclictest21973-21/usr/sbin/munin20:10:170
376799711,6cyclictest29566-21who23:20:310
376799711,42cyclictest16920-21df_inode00:15:150
376799697,35cyclictest3-21ksoftirqd/023:50:530
376799678,36cyclictest0-21swapper/022:15:230
376799671,43cyclictest3286-21runrttasks00:34:370
376799658,34cyclictest3-21ksoftirqd/023:04:390
376799641,41cyclictest7018-21iostat19:30:200
376799632,39cyclictest5811-21basename22:20:120
3767996318,26cyclictest3-21ksoftirqd/021:32:000
376799622,53cyclictest3286-21runrttasks20:58:510
376799621,6cyclictest1930-21watchsnmpd20:44:010
376799621,4cyclictest17233-21latency_hist21:25:010
376799621,39cyclictest26594-21taskset20:21:130
376799621,37cyclictest2401-21NetworkManager00:42:510
376799612,41cyclictest3286-21runrttasks23:57:310
376799611,47cyclictest30011-21taskset21:56:320
376799611,41cyclictest30716-21latency_hist20:35:010
3767996111,45cyclictest3-21ksoftirqd/023:06:150
376799611,11cyclictest14279-21tune2fs19:50:150
376799601,42cyclictest3286-21runrttasks20:00:160
376799601,42cyclictest20609-21chrt20:05:260
376799601,37cyclictest5951-21iostat23:45:190
376799601,37cyclictest28579-21uname00:45:220
376799601,37cyclictest19464-21rt-features00:20:270
376799601,37cyclictest11088-21aten_r4power_vo00:00:120
376799598,44cyclictest32403-21fschecks_count23:30:160
376799591,37cyclictest3102-21grep20:45:250
3767995910,31cyclictest27204-21fschecks_time21:50:170
376799588,33cyclictest3-21ksoftirqd/000:35:410
376799581,7cyclictest14931-21taskset21:16:120
376799581,4cyclictest2401-21NetworkManager21:46:310
376799581,44cyclictest7583-21seq22:25:020
376799581,44cyclictest24897-21taskset20:18:170
376799581,41cyclictest1868-21fschecks_time23:35:180
376799581,37cyclictest13075-21chrt21:11:240
3767995812,29cyclictest4907-21seq23:42:010
376799575,35cyclictest29977-21cpu00:50:120
376799571,6cyclictest23454-21fschecks_time21:40:160
376799571,43cyclictest15583-21ntp_states00:10:250
376799571,42cyclictest12246-21grep19:45:120
376799571,40cyclictest27737-21uname20:25:210
376799571,39cyclictest24797-21cstates23:10:130
376799568,5cyclictest32479-21runrttasks20:38:580
376799561,7cyclictest18594-21unixbench_singl21:25:340
376799561,6cyclictest9585-21tr22:30:150
376799561,5cyclictest9401-21wc19:35:280
3767995611,30cyclictest14416-21/usr/sbin/munin22:40:270
376799557,31cyclictest22187-21cut00:30:000
376799552,37cyclictest0-21swapper/021:35:140
376799552,32cyclictest3194-21users22:10:300
376799551,40cyclictest3286-21runrttasks22:47:590
376799551,38cyclictest27210-21/usr/sbin/munin23:15:240
376799551,38cyclictest12552-21unixbench_multi22:35:370
3767995511,31cyclictest9212-21users21:00:270
376799543,44cyclictest17296-21diskstats22:50:150
376799541,7cyclictest31211-21grep23:25:290
376799541,7cyclictest30564-21cut22:00:100
376799541,36cyclictest2225-21dbus-daemon22:55:090
376799532,5cyclictest5169-21/usr/sbin/munin19:25:290
376799532,5cyclictest32704-21/usr/sbin/munin22:05:160
376799531,6cyclictest13575-21wc00:05:230
3768993727,6cyclictest25117-21iostat23:10:181
247252351,5sleep111038-21snmpd20:16:321
376899333,9cyclictest0-21swapper/123:02:091
209612331,5sleep10-21swapper/120:06:261
153192331,4sleep111038-21snmpd19:51:281
150392331,4sleep115046-21df_inode00:10:151
376899325,8cyclictest81rcu_preempt20:45:011
3768993224,5cyclictest22-21ksoftirqd/123:20:011
376899321,6cyclictest81rcu_preempt00:20:171
376899321,4cyclictest81rcu_preempt22:15:151
3768993214,4cyclictest81rcu_preempt20:35:261
3768993213,6cyclictest146012sensors21:15:271
376899321,20cyclictest0-21swapper/120:32:091
376899321,17cyclictest15710-21iostat22:45:181
376899317,3cyclictest40250irq/92-i91523:51:141
3768993124,5cyclictest22-21ksoftirqd/100:30:001
3768993123,5cyclictest22-21ksoftirqd/121:15:001
376899311,4cyclictest81rcu_preempt20:10:211
246812311,5sleep10-21swapper/121:44:371
136952311,5sleep10-21swapper/119:49:031
109762311,5sleep10-21swapper/122:32:531
10802311,5sleep10-21swapper/123:32:441
73912301,5sleep10-21swapper/122:24:371
376899306,13cyclictest40250irq/92-i91521:25:011
376899304,19cyclictest26649-21iostat_ios00:40:191
376899303,24cyclictest0-21swapper/100:01:041
376899303,14cyclictest4746-21users23:40:301
3768993022,4cyclictest22-21ksoftirqd/119:36:591
3768993014,4cyclictest81rcu_preempt00:00:011
376899301,11cyclictest81rcu_preempt22:05:131
3768993011,14cyclictest4030-21latency_hist20:50:021
311332301,5sleep10-21swapper/100:50:401
265612301,5sleep10-21swapper/120:20:551
193382301,5sleep10-21swapper/120:04:021
174132301,6sleep10-21swapper/119:58:451
376899296,4cyclictest81rcu_preempt00:05:121
376899294,19cyclictest19172-21diskstats22:55:161
376899292,4cyclictest81rcu_preempt21:05:281
376899292,24cyclictest26081-21grep21:45:291
376899292,16cyclictest0-21swapper/121:00:171
376899291,4cyclictest81rcu_preempt22:39:501
376899291,14cyclictest21947-21ntp_states21:35:261
318222291,5sleep10-21swapper/122:00:391
29752291,5sleep10-21swapper/123:36:531
296862291,5sleep10-21swapper/123:21:401
148602291,5sleep10-21swapper/122:44:011
75052281,5sleep10-21swapper/120:57:161
52432281,5sleep10-21swapper/119:26:061
376899281,4cyclictest81rcu_preempt20:45:171
376899281,4cyclictest81rcu_preempt19:32:531
32512281,5sleep10-21swapper/122:11:001
307712281,22sleep130775-21irqstats23:25:211
300212281,4sleep10-21swapper/121:56:401
193222281,5sleep119474-21wc21:30:131
376899274,6cyclictest17611-21mailstats00:15:271
376899273,3cyclictest81rcu_preempt00:45:191
376899272,10cyclictest7877-21df22:25:131
3768992717,6cyclictest28364-21grep20:25:291
3768992716,7cyclictest17954-21iostat21:25:211
3768992713,4cyclictest22-21ksoftirqd/122:50:161
376899271,13cyclictest27387-21kernelversion21:50:221
376899271,13cyclictest24513-21fschecks_count00:35:141
3768992711,12cyclictest22-21ksoftirqd/123:05:301
3768992710,5cyclictest40250irq/92-i91523:45:301
238292271,5sleep10-21swapper/100:33:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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