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2026-06-07 - 03:51

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #6

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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackeslot6s.osadl.org (updated Sat Jun 06, 2026 00:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1676612997365,6cyclictest0-21swapper/000:10:010
1676615997032,33cyclictest0-21swapper/221:10:272
167661599701,59cyclictest1660-21snmpd20:45:212
167661599701,59cyclictest1660-21snmpd20:45:212
1676615996626,34cyclictest0-21swapper/200:05:292
1676615996530,31cyclictest1708360-21cron22:14:592
1676615996423,4cyclictest1684515-21unixbench_singl19:50:282
1676615996323,36cyclictest0-21swapper/220:15:272
1676615996312,12cyclictest0-21swapper/221:25:012
1676615996020,4cyclictest0-21swapper/222:35:302
1676615995931,24cyclictest1689715-21munin-plugin-st20:25:002
1676615995924,7cyclictest1702384-21sendmail-msp21:40:002
1676615995924,28cyclictest0-21swapper/223:25:022
1676615995924,28cyclictest0-21swapper/223:25:022
1676615995924,28cyclictest0-21swapper/221:55:202
1676615995822,4cyclictest0-21swapper/220:50:192
1676615995819,34cyclictest0-21swapper/222:15:222
1676613995852,4cyclictest231ktimers/121:25:011
1676615995720,4cyclictest0-21swapper/219:25:222
1676615995626,26cyclictest1727044-21munin-plugin-st00:05:002
1676615995622,5cyclictest0-21swapper/219:40:182
1676613995643,9cyclictest1722809-21sendmail23:40:011
1676615995522,6cyclictest1731149-21grep00:25:282
1676612995550,4cyclictest0-21swapper/020:15:180
1676615995426,22cyclictest0-21swapper/220:25:262
1676613995444,6cyclictest1689714-21munin-plugin-st20:25:001
1676615995320,7cyclictest0-21swapper/220:55:292
1676615995217,6cyclictest1728683-21grep00:10:282
1676612995235,13cyclictest0-21swapper/020:00:000
1676615995123,4cyclictest0-21swapper/219:55:192
1676615995117,7cyclictest1679063-21sshd19:20:242
1676613995141,6cyclictest1706685-21munin-plugin-st22:05:011
1676613995138,7cyclictest1683562-21grep19:45:291
167661599505,14cyclictest1683616-21apt-get19:50:022
1676615995018,4cyclictest0-21swapper/221:10:002
1676612995038,7cyclictest1725285-21unixbench_singl23:50:290
1676615994922,7cyclictest0-21swapper/222:50:282
1676615994917,6cyclictest1714141-21grep22:45:282
167661299494,42cyclictest0-21swapper/000:00:270
1676612994941,4cyclictest167350irq/118-8000000.ethernet-tx019:40:280
1676615994839,4cyclictest1713534-21munin-plugin-st22:45:012
1676615994839,4cyclictest1713534-21munin-plugin-st22:45:012
1676613994827,11cyclictest0-21swapper/122:10:191
1676613994816,26cyclictest0-21swapper/122:40:241
1676613994816,26cyclictest0-21swapper/122:40:241
1676613994739,5cyclictest1701525-21munin-plugin-st21:35:011
1676613994721,14cyclictest231ktimers/119:15:141
1676612994739,5cyclictest0-21swapper/023:05:000
1676615994616,6cyclictest1687956-21latency_hist20:15:002
1676612994638,4cyclictest0-21swapper/020:15:010
1676615994535,7cyclictest1704990-21munin-plugin-st21:55:012
1676615994535,7cyclictest1704990-21munin-plugin-st21:55:002
1676613994532,7cyclictest1704952-21grep21:50:281
1676613994532,7cyclictest1704952-21grep21:50:281
167661399451,11cyclictest0-21swapper/121:00:011
1676612994535,7cyclictest1681809-21unixbench_multi19:35:270
1676612994534,8cyclictest1702367-21munin-plugin-st21:40:000
1676612994532,9cyclictest0-21swapper/023:30:200
1676615994418,6cyclictest311ktimers/221:15:272
1676613994433,7cyclictest0-21swapper/120:09:591
1676613994431,8cyclictest0-21swapper/120:15:271
1676613994413,14cyclictest1677556-21munin-node19:15:021
1676612994436,5cyclictest167350irq/118-8000000.ethernet-tx019:30:120
1676615994333,6cyclictest1722707-21grep23:35:262
1676615994331,7cyclictest0-21swapper/220:05:282
1676613994328,9cyclictest0-21swapper/123:15:281
1676612994335,5cyclictest0-21swapper/000:25:220
1676612994331,8cyclictest1722528-21/usr/sbin/munin23:35:240
1676612994329,11cyclictest0-21swapper/021:20:290
1676615994235,4cyclictest1677419-21munin-plugin-st19:15:002
1676613994227,9cyclictest0-21swapper/120:00:291
1676612994237,3cyclictest200-21pr/ttyS200:00:000
1676612994234,4cyclictest0-21swapper/019:10:260
1676612994229,10cyclictest1683904-21apt-get19:50:050
167661299422,5cyclictest1694427-21memory20:50:240
167661299422,4cyclictest0-21swapper/022:00:130
167661299421,38cyclictest1679771-21dropbear19:25:210
1676613994133,5cyclictest1690462-21grep20:25:271
1676613994130,7cyclictest0-21swapper/122:30:001
1676613994129,6cyclictest0-21swapper/123:50:251
1676613994125,8cyclictest0-21swapper/100:35:021
1676613994124,7cyclictest0-21swapper/122:30:311
1676612994129,8cyclictest0-21swapper/023:45:290
1676612994128,9cyclictest0-21swapper/000:10:270
167661299412,7cyclictest1708742-21sh22:15:220
167661299412,36cyclictest0-21swapper/019:45:300
1676615994031,5cyclictest1678547-21sendmail19:19:592
1676615994028,6cyclictest1693046-21grep20:40:282
167661399408,22cyclictest24-21ksoftirqd/123:05:011
1676613994031,6cyclictest1702303-21unixbench_singl21:35:281
1676613994025,8cyclictest0-21swapper/119:20:261
1676612994035,2cyclictest0-21swapper/021:30:190
1676612994032,5cyclictest20850irq/208-8000000.ethernet00:20:000
1676612994032,5cyclictest20850irq/208-8000000.ethernet00:20:000
1676612994026,10cyclictest0-21swapper/023:20:280
1676612994026,10cyclictest0-21swapper/023:20:280
167661299402,30cyclictest1679526-21latency_hist19:25:020
167661299401,3cyclictest1732104-21apt-get00:35:030
167661299401,36cyclictest0-21swapper/023:25:240
167661299401,36cyclictest0-21swapper/022:40:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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