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2026-06-09 - 08:13

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #3

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 rack9slot3s.osadl.org (updated Tue Jun 09, 2026 00:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
119591600,39ptp4l0-21swapper/019:05:070
119591600,33ptp4l0-21swapper/119:09:071
1300915451,1phc2sys0-21swapper/219:05:212
1335325147,2sleep30-21swapper/319:05:123
49472500,1sleep11603199cyclictest20:45:221
235552480,0sleep10-21swapper/123:20:231
119591320,0ptp4l0-21swapper/121:05:211
119591180,0ptp4l0-21swapper/100:05:191
119591180,0ptp4l0-21swapper/022:30:140
119591180,0ptp4l0-21swapper/022:00:140
1603299170,1cyclictest121rcu_preempt23:15:142
119591170,0ptp4l0-21swapper/121:10:181
119591170,0ptp4l0-21swapper/120:40:201
119591170,0ptp4l0-21swapper/019:50:180
119591170,0ptp4l0-21swapper/000:05:200
119591160,1ptp4l32357-21apt-get23:40:120
119591160,1ptp4l29219-21apt-get00:35:121
119591160,1ptp4l28864-21ls23:30:211
119591160,1ptp4l27472-21apt-get19:30:131
119591160,1ptp4l23816-21snmp_o5powerctl19:20:210
119591160,1ptp4l21752-21apt-get23:20:120
119591160,1ptp4l18929-21snmp_o5powerctl19:15:011
119591160,1ptp4l13787-21apt-get23:05:141
119591160,0ptp4l0-21swapper/221:21:562
119591160,0ptp4l0-21swapper/122:00:141
119591160,0ptp4l0-21swapper/121:39:571
119591160,0ptp4l0-21swapper/000:30:150
119591150,1ptp4l5231-21apt-get23:50:111
119591150,1ptp4l4567-21ls20:45:180
119591150,1ptp4l3873-21ls23:45:180
119591150,1ptp4l32737-21aten_r9power_cu22:40:120
119591150,1ptp4l31448-21ntp_states22:35:181
119591150,1ptp4l30161-21/usr/sbin/munin23:35:141
119591150,1ptp4l28087-21if_enp3s020:30:150
119591150,1ptp4l27378-21aten_r9power_po20:30:121
119591150,1ptp4l26334-21snmp_o5powerctl20:25:220
119591150,1ptp4l24398-21apt-get23:25:120
119591150,1ptp4l21814-21apt-get21:20:020
119591150,1ptp4l20914-21snmp_o5powerctl22:15:191
119591150,1ptp4l20807-21snmp_o5powerctl20:15:221
119591150,1ptp4l2047-21snmp_o5powerctl19:40:210
119591150,1ptp4l20367-21ls00:15:241
119591150,1ptp4l19545-21irqrtprio00:15:190
119591150,1ptp4l18108-21snmp_o5powerctl23:10:231
119591150,1ptp4l18054-21snmp_o5powerctl22:10:211
119591150,1ptp4l16322-21diskstats00:10:140
119591150,1ptp4l16299-21diskmemload22:45:240
119591150,1ptp4l14425-21hwlatdetect22:05:140
119591150,1ptp4l13835-21sed21:05:022
119591150,1ptp4l12653-21snmp_o5powerctl20:00:211
119591150,0ptp4l0-21swapper/200:24:572
119591150,0ptp4l0-21swapper/123:45:121
119591150,0ptp4l0-21swapper/123:40:171
119591150,0ptp4l0-21swapper/122:55:131
119591150,0ptp4l0-21swapper/122:50:101
119591150,0ptp4l0-21swapper/121:41:321
119591150,0ptp4l0-21swapper/121:20:031
119591150,0ptp4l0-21swapper/120:35:021
119591150,0ptp4l0-21swapper/119:50:121
119591150,0ptp4l0-21swapper/100:25:131
119591150,0ptp4l0-21swapper/100:10:131
119591150,0ptp4l0-21swapper/100:00:111
119591150,0ptp4l0-21swapper/023:10:120
119591150,0ptp4l0-21swapper/023:00:130
119591150,0ptp4l0-21swapper/022:55:210
119591150,0ptp4l0-21swapper/022:20:130
119591150,0ptp4l0-21swapper/022:15:030
119591150,0ptp4l0-21swapper/021:55:210
119591150,0ptp4l0-21swapper/021:10:130
119591150,0ptp4l0-21swapper/021:05:250
119591150,0ptp4l0-21swapper/020:50:120
119591150,0ptp4l0-21swapper/020:05:150
119591150,0ptp4l0-21swapper/020:05:150
119591150,0ptp4l0-21swapper/019:55:020
119591150,0ptp4l0-21swapper/000:20:110
119591140,1ptp4l8662-21aten2.4-expect20:55:121
119591140,1ptp4l750-21cstates21:40:142
119591140,1ptp4l3023-21apt-get19:45:140
119591140,1ptp4l27662-21grep19:30:140
119591140,1ptp4l25019-21aten_r9power_po21:25:121
119591140,1ptp4l24372-21expr00:25:142
119591140,1ptp4l16355-21cstates19:10:131
119591140,1ptp4l1537-21irqstats20:40:190
119591140,1ptp4l12820-21rt-features21:00:200
119591140,0ptp4l7135-21ls20:50:181
119591140,0ptp4l4409-21ls21:45:180
119591140,0ptp4l4019-21ps21:45:172
119591140,0ptp4l2200-21ls19:40:241
119591140,0ptp4l0-21swapper/223:30:182
119591140,0ptp4l0-21swapper/223:00:222
119591140,0ptp4l0-21swapper/220:00:152
119591140,0ptp4l0-21swapper/123:55:101
119591140,0ptp4l0-21swapper/123:15:541
119591140,0ptp4l0-21swapper/123:04:331
119591140,0ptp4l0-21swapper/122:45:241
119591140,0ptp4l0-21swapper/122:40:231
119591140,0ptp4l0-21swapper/122:30:121
119591140,0ptp4l0-21swapper/122:25:151
119591140,0ptp4l0-21swapper/122:20:181
119591140,0ptp4l0-21swapper/122:05:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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