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2026-05-16 - 21:42

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #7, 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 100 highest latencies:
System rack7slot4s.osadl.org (updated Sat May 16, 2026 12:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17163998037,9cyclictest21-21ksoftirqd/110:00:141
17178997637,29cyclictest35966irq/58-eth012:05:123
17178997637,29cyclictest35966irq/58-eth012:05:123
1715799633,49cyclictest7250-21ssh11:00:130
1715799595,42cyclictest19631-21ssh09:55:120
1716399565,7cyclictest131rcu_preempt09:35:151
1716399565,7cyclictest131rcu_preempt09:35:151
1717099553,32cyclictest14292-21ssh10:10:122
1717099553,29cyclictest15972-21ssh12:35:132
1716399524,6cyclictest131rcu_preempt08:15:141
1716399515,9cyclictest131rcu_preempt09:25:111
1715799505,8cyclictest131rcu_preempt07:55:140
1716399493,37cyclictest21616-21ssh10:50:141
1715799492,37cyclictest23459-21ssh11:45:130
1716399483,32cyclictest24988-21ssh09:40:131
1716399482,40cyclictest5338-21ssh10:05:151
1716399481,3cyclictest131rcu_preempt10:55:131
1717099452,9cyclictest0-21swapper/211:40:132
1717099434,35cyclictest27346irq/40-dwc2_hso11:55:132
1716399433,33cyclictest3534-21ssh09:10:151
1717099421,5cyclictest19874-21ssh11:25:122
1715799423,31cyclictest17943-21ssh12:00:110
1716399411,33cyclictest10841-21ssh11:20:151
17157994117,9cyclictest12-21ksoftirqd/010:54:480
17178994026,10cyclictest35966irq/58-eth011:15:123
1717099404,7cyclictest27346irq/40-dwc2_hso12:05:152
1717099404,7cyclictest27346irq/40-dwc2_hso12:05:142
1717099401,8cyclictest23830-21grep09:55:302
1717099392,32cyclictest0-21swapper/211:10:552
1717099392,24cyclictest18001-21ssh10:30:132
1717099392,24cyclictest18001-21ssh10:30:122
1717099391,9cyclictest10515-21kthreadcore10:25:202
1717099391,8cyclictest17320-21cut09:35:212
1717099391,8cyclictest17320-21cut09:35:212
1717099391,13cyclictest503-21latency_hist08:00:032
1717099391,12cyclictest25756-21cut08:25:202
1717099381,9cyclictest9343-21kthreadcore11:00:212
1717099381,9cyclictest32155-21latency_hist11:50:032
1717099381,8cyclictest3788-21fschecks_count10:40:172
1717099372,7cyclictest17057-21usage_Anybus12:15:302
1717099372,6cyclictest0-21swapper/208:44:482
1717099371,8cyclictest6955-21/usr/sbin/munin09:30:262
1717099371,8cyclictest27181-21wc10:15:282
1717099371,8cyclictest25309-21ntpq12:20:272
1717099371,8cyclictest10456-21ssh11:20:012
1717099371,6cyclictest17443-21fschecks_count07:10:162
1717099371,6cyclictest17443-21fschecks_count07:10:152
1717099370,6cyclictest9982-21kthreadcore12:30:222
1717899363,22cyclictest35966irq/58-eth011:10:113
1717899362,18cyclictest35966irq/58-eth012:25:133
1717099367,25cyclictest5484-21fschecks_count10:05:182
1717099361,8cyclictest21794-21irqcore08:55:182
1717099361,12cyclictest22149-21cut09:20:182
1717099361,10cyclictest30556-21ls10:35:242
1717099357,25cyclictest4653-21sh10:57:262
1717099354,4cyclictest4235-21fschecks_count07:30:172
1717099354,19cyclictest27346irq/40-dwc2_hso07:45:152
1717099353,9cyclictest0-21swapper/209:13:472
1717099351,9cyclictest32126-21irqcore07:25:172
1717099351,6cyclictest30727-21cut11:30:202
1717099351,17cyclictest16375-21wc09:15:292
1717099351,13cyclictest26576-21latency_hist12:05:022
1717099351,13cyclictest12695-21grep10:45:152
1717099351,12cyclictest5699-21fschecks_time11:35:182
1717099351,12cyclictest12180-21kthreadcore07:35:222
1717099351,11cyclictest32352-21ssh10:00:262
1716399352,29cyclictest1816-21ssh11:15:131
1716399352,21cyclictest32314-21ssh10:20:131
1716399351,23cyclictest3118-21diskmemload09:30:141
1715799354,21cyclictest3118-21diskmemload12:25:140
1715799352,25cyclictest13199-21cut08:10:210
1717099342,8cyclictest12684-21kthreadcore09:50:212
1717099341,9cyclictest26485-21irqcore09:00:182
1717099341,8cyclictest30766-21grep12:25:162
1717099341,8cyclictest26908-21/usr/sbin/munin07:20:262
1717099341,8cyclictest2468-21tr11:50:222
1717099341,8cyclictest10387-21fschecks_count08:10:162
1717099341,7cyclictest19770-21missed_timers11:05:232
1717099341,7cyclictest19770-21missed_timers11:05:232
1717099341,4cyclictest3274-21ssh09:10:022
1717099341,10cyclictest25269-21grep09:40:162
1717099341,10cyclictest16126-21kthreadcore07:40:182
1717099340,9cyclictest15437-21unixbench_multi08:45:272
1715799343,24cyclictest7064-21ssh12:30:140
1715799342,3cyclictest131rcu_preempt08:00:140
1717099331,9cyclictest3118-21diskmemload09:45:222
1717099331,8cyclictest5433-21ntpq08:35:262
1717099331,8cyclictest15537-21irqcore08:15:202
1717099331,7cyclictest32478-21fschecks_count10:20:162
1717099331,13cyclictest30221-21munin-run10:55:012
17157993326,4cyclictest151rcuc/011:55:120
17157993314,11cyclictest12-21ksoftirqd/012:35:140
1717899321,17cyclictest35966irq/58-eth010:05:153
1717099325,7cyclictest30633-21tune2fs09:25:152
1717099321,8cyclictest10794-21/usr/sbin/munin11:20:242
1715799323,23cyclictest23294-21ssh10:15:130
17157993213,17cyclictest151rcuc/009:25:110
1717899315,14cyclictest35966irq/58-eth011:20:123
1717099311,8cyclictest8029-21usage_EthcTask12:10:302
1717099311,8cyclictest16422-21/usr/sbin/munin08:50:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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