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2026-08-07 - 17:07

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 Fri Aug 07, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
119591630,41ptp4l0-21swapper/007:07:190
119591560,34ptp4l0-21swapper/107:05:231
610725242,2sleep20-21swapper/207:08:102
599925147,2sleep30-21swapper/307:06:473
94392430,0sleep00-21swapper/012:15:220
119591220,0ptp4l0-21swapper/109:10:161
119591220,0ptp4l0-21swapper/009:40:140
119591190,1ptp4l24032-21ls10:40:241
119591190,0ptp4l0-21swapper/108:25:231
119591190,0ptp4l0-21swapper/009:20:220
119591180,0ptp4l0-21swapper/009:50:170
119591180,0ptp4l0-21swapper/008:10:180
119591170,2ptp4l0-21swapper/110:55:131
119591170,0ptp4l0-21swapper/010:50:220
119591170,0ptp4l0-21swapper/008:05:220
119591160,2ptp4l10335-21snmp_o5powerctl10:15:241
119591160,1ptp4l30072-21snmp_o5powerctl08:50:231
119591160,1ptp4l15856-21snmp_o5powerctl10:25:220
105152160,0sleep30-21swapper/311:15:233
119591150,1ptp4l9512-21ntp_states12:15:221
119591150,1ptp4l7227-21memory10:10:180
119591150,1ptp4l7144-21snmp_o5powerctl12:10:211
119591150,1ptp4l6345-21diskmemload10:20:110
119591150,1ptp4l5606-21snmp_o5powerctl09:05:191
119591150,1ptp4l3358-21apt-get10:05:130
119591150,1ptp4l30455-21apt-get09:55:120
119591150,1ptp4l28161-21perf08:50:010
119591150,1ptp4l23649-21snmp_o5powerctl11:40:211
119591150,1ptp4l21365-21ls10:35:230
119591150,1ptp4l21151-21snmp_o5powerctl10:35:221
119591150,1ptp4l18952-21ls09:30:200
119591150,1ptp4l18477-21hddtemp_smartct08:30:161
119591150,1ptp4l18342-21snmp_o5powerctl11:30:231
119591150,1ptp4l17758-21snmp_o5powerctl12:30:230
119591150,1ptp4l16814-21snmp_o5powerctl08:25:220
119591150,1ptp4l1670-21apt-get08:00:111
119591150,1ptp4l14281-21df11:25:141
119591150,1ptp4l13002-21snmp_o5powerctl10:20:211
119591150,1ptp4l11288-21snmp_o5powerctl08:15:220
119591150,1ptp4l11003-21ntp_states08:15:201
119591150,0ptp4l0-21swapper/112:20:131
119591150,0ptp4l0-21swapper/111:10:111
119591150,0ptp4l0-21swapper/111:07:201
119591150,0ptp4l0-21swapper/110:49:481
119591150,0ptp4l0-21swapper/110:31:351
119591150,0ptp4l0-21swapper/108:20:011
119591150,0ptp4l0-21swapper/108:10:121
119591150,0ptp4l0-21swapper/011:50:130
119591150,0ptp4l0-21swapper/009:25:110
119591140,2ptp4l0-21swapper/207:45:222
119591140,1ptp4l9493-21irqrtprio11:15:160
119591140,1ptp4l7704-21irqstats09:10:170
119591140,1ptp4l7053-21ps12:10:190
119591140,1ptp4l31831-21cat07:55:150
119591140,1ptp4l31600-21snmp_o5powerctl11:55:240
119591140,1ptp4l28134-21/usr/sbin/munin10:50:131
119591140,1ptp4l27755-21snmp_o5powerctl07:45:210
119591140,1ptp4l24486-21ntp_states08:40:171
119591140,1ptp4l24348-21grep09:40:221
119591140,1ptp4l2366-21mailstats10:00:220
119591140,1ptp4l23263-21sed07:40:010
119591140,1ptp4l22929-21if_enp3s010:40:172
119591140,1ptp4l20014-21ls12:35:170
119591140,1ptp4l19801-21snmp_o5powerctl07:30:230
119591140,1ptp4l17156-21snmp_o5powerctl07:25:230
119591140,1ptp4l13729-21irqstats07:20:170
119591140,1ptp4l13568-21cpu12:25:141
119591140,1ptp4l10303-21sed11:15:221
119591140,0ptp4l9945-21ls10:15:210
119591140,0ptp4l0-21swapper/209:55:142
119591140,0ptp4l0-21swapper/112:37:461
119591140,0ptp4l0-21swapper/112:05:241
119591140,0ptp4l0-21swapper/112:00:291
119591140,0ptp4l0-21swapper/112:00:281
119591140,0ptp4l0-21swapper/111:55:241
119591140,0ptp4l0-21swapper/111:54:581
119591140,0ptp4l0-21swapper/111:24:471
119591140,0ptp4l0-21swapper/110:05:241
119591140,0ptp4l0-21swapper/109:55:211
119591140,0ptp4l0-21swapper/109:50:251
119591140,0ptp4l0-21swapper/109:45:231
119591140,0ptp4l0-21swapper/109:25:141
119591140,0ptp4l0-21swapper/108:59:471
119591140,0ptp4l0-21swapper/108:45:141
119591140,0ptp4l0-21swapper/108:05:191
119591140,0ptp4l0-21swapper/107:55:221
119591140,0ptp4l0-21swapper/107:48:451
119591140,0ptp4l0-21swapper/107:38:361
119591140,0ptp4l0-21swapper/012:25:120
119591140,0ptp4l0-21swapper/011:30:220
119591140,0ptp4l0-21swapper/011:09:460
119591140,0ptp4l0-21swapper/010:55:140
119591140,0ptp4l0-21swapper/008:50:210
119591140,0ptp4l0-21swapper/008:30:240
119591140,0ptp4l0-21swapper/008:00:200
119591140,0ptp4l0-21swapper/007:18:380
119591130,1ptp4l3941-21apt-get09:05:102
119591130,0ptp4l0-21swapper/212:15:142
119591130,0ptp4l0-21swapper/211:35:122
119591130,0ptp4l0-21swapper/211:30:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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