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2026-09-05 - 19:49

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 Sep 05, 2026 12:45:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1725899564,12cyclictest27346irq/40-dwc2_hso11:00:122
1725899504,39cyclictest21499-21ssh10:50:152
17249995026,8cyclictest12-21ksoftirqd/010:25:110
1725899482,35cyclictest16039-21ssh11:05:142
1725899479,24cyclictest27-21ksoftirqd/209:15:142
17266994527,8cyclictest35966irq/58-eth012:05:153
1726699431,27cyclictest35966irq/58-eth009:40:133
1725899432,33cyclictest22252-21sshd07:15:132
1726699413,23cyclictest35966irq/58-eth009:15:123
1725899402,21cyclictest19452-21ssh11:40:532
17249993916,21cyclictest12-21ksoftirqd/012:35:140
1725899363,24cyclictest630-21Async09:36:312
1725899362,26cyclictest22920-21apt-get11:45:052
17258993617,13cyclictest0-21swapper/210:20:142
1725099362,2cyclictest131rcu_preempt12:25:121
1725899351,21cyclictest30419-21diskmemload09:25:142
1725099351,31cyclictest8951-21ssh10:25:111
1725099350,22cyclictest23402-21ssh11:45:131
1726699343,19cyclictest35966irq/58-eth012:25:113
1725099331,23cyclictest3682-21ssh12:10:151
1726699327,13cyclictest35966irq/58-eth010:40:133
1725899324,18cyclictest27346irq/40-dwc2_hso08:10:132
1725899323,22cyclictest0-21swapper/211:25:132
1725899322,25cyclictest13062-21ssh11:39:052
17249993215,10cyclictest664-21ntpd12:00:130
1725099314,3cyclictest131rcu_preempt09:55:151
1725099312,25cyclictest1603-21ssh11:15:131
1725099311,27cyclictest18038-21ssh12:00:141
1725899302,21cyclictest0-21swapper/212:21:052
17249993016,9cyclictest12-21ksoftirqd/008:15:110
1724999301,23cyclictest28700-21ssh11:30:150
1726699292,18cyclictest35966irq/58-eth007:15:113
1725099292,22cyclictest18032-21ssh10:30:171
1726699282,17cyclictest35966irq/58-eth012:10:163
1725899284,20cyclictest17248-21cyclictest12:03:052
1725899284,13cyclictest27346irq/40-dwc2_hso08:30:142
1725899281,20cyclictest3521-21ssh10:40:122
1724999288,11cyclictest630-21Async09:36:310
1724999285,15cyclictest12-21ksoftirqd/011:15:140
1726699270,18cyclictest35966irq/58-eth009:10:143
1726699270,18cyclictest35966irq/58-eth009:10:143
17258992720,3cyclictest536-21usb-storage07:50:112
17258992711,12cyclictest877-21lldpd12:05:152
17250992713,11cyclictest1715-21ssh09:45:121
1725099271,18cyclictest27085-21sshd07:20:131
17266992611,9cyclictest35966irq/58-eth012:30:163
17266992611,9cyclictest35966irq/58-eth012:30:153
1726699261,16cyclictest35966irq/58-eth010:15:133
1725899262,8cyclictest20488-21ssh12:19:062
1725899261,15cyclictest21409-21ssh09:20:122
17249992611,8cyclictest12-21ksoftirqd/008:25:150
1726699259,10cyclictest0-21swapper/307:45:133
1726699252,15cyclictest35966irq/58-eth008:20:133
1726699251,15cyclictest35966irq/58-eth011:10:153
1725899252,20cyclictest0-21swapper/208:35:152
1725899252,19cyclictest0-21swapper/207:30:142
17250992510,11cyclictest30415-21ssh10:55:141
1726699242,13cyclictest35966irq/58-eth010:55:133
17266992413,8cyclictest35966irq/58-eth010:30:183
17266992413,8cyclictest35966irq/58-eth010:25:133
1725899242,17cyclictest8976-21ssh12:11:042
1725899242,16cyclictest0-21swapper/208:40:042
17258992412,8cyclictest0-21swapper/209:50:192
17258992412,8cyclictest0-21swapper/209:50:182
1725899240,11cyclictest13552-21latency_hist07:40:022
1724999242,17cyclictest3008-21diskmemload12:23:050
17266992314,6cyclictest0-21swapper/312:20:223
17266992313,8cyclictest0-21swapper/310:15:003
1726699231,12cyclictest35966irq/58-eth011:25:123
1725899233,14cyclictest27346irq/40-dwc2_hso10:15:142
1725899232,6cyclictest0-21swapper/212:28:052
1725899232,16cyclictest0-21swapper/212:37:062
17250992311,3cyclictest3008-21diskmemload11:20:121
17250992311,3cyclictest3008-21diskmemload11:20:121
1724999238,9cyclictest0-21swapper/007:20:110
17249992310,8cyclictest151rcuc/012:08:050
1726699224,12cyclictest35966irq/58-eth008:55:123
1726699222,12cyclictest35966irq/58-eth011:45:143
1725899223,13cyclictest27346irq/40-dwc2_hso09:00:152
1725899222,15cyclictest0-21swapper/212:34:052
1725899222,15cyclictest0-21swapper/212:34:042
1725899221,18cyclictest930-21snmpd08:50:202
1725899221,17cyclictest930-21snmpd10:45:142
1725899221,17cyclictest5463-21sh10:05:142
1725899221,11cyclictest0-21swapper/209:05:132
1725099223,4cyclictest21-21ksoftirqd/108:50:161
1725099221,15cyclictest8982-21apt-get07:35:131
1725099221,15cyclictest16058-21ssh11:05:151
1724999227,3cyclictest131rcu_preempt11:00:180
1724999225,9cyclictest0-21swapper/010:55:150
1724999222,17cyclictest10341-21apt-get08:10:120
17249992212,7cyclictest28446-21cron10:00:010
17249992211,8cyclictest19652-21ntpq09:35:260
17249992211,4cyclictest3008-21diskmemload10:05:130
1726699212,14cyclictest35966irq/58-eth011:00:123
17266992115,4cyclictest35966irq/58-eth010:02:553
17266992111,4cyclictest0-21swapper/310:45:143
1725899219,10cyclictest32442-21ssh11:50:142
1725899215,5cyclictest25389-21irqcore11:10:192
1725899214,14cyclictest4599-21head08:00:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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