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2025-07-02 - 03:21

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #2, slot #7

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack2slot7s.osadl.org (updated Wed Jul 02, 2025 00:41:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1115221995511,34cyclictest1157205-21ssh21:17:580
1115223995134,13cyclictest1248437-21latency23:22:492
1115222995012,32cyclictest1230363-21ssh22:57:571
1115223994938,7cyclictest3525212-21cups-browsed19:47:472
1115223994840,5cyclictest1231875-21systemd-run23:00:022
1115223994838,6cyclictest1169612-21grep21:35:012
1115223994837,5cyclictest0-21swapper/223:08:012
1115221994736,8cyclictest1188007-21munin-run22:00:010
1115222994638,5cyclictest1275838-21munin-run00:00:011
1115223994536,6cyclictest1275914-21cups-browsed00:00:022
1115222994535,6cyclictest3525212-21cups-browsed23:05:011
111522399444,32cyclictest1182901-21ssh21:52:572
1115223994335,5cyclictest1279546-21idleruntime-cro00:05:012
1115223994335,5cyclictest1279546-21idleruntime-cro00:05:012
1115223994333,7cyclictest0-21swapper/200:40:012
1115223994234,5cyclictest1217399-21ssh22:40:032
1115222994235,4cyclictest0-21swapper/122:48:031
1115222994234,5cyclictest1195453-21latency_hist22:10:031
1115221994234,5cyclictest422-21dbus-daemon00:25:010
1115221994234,4cyclictest0-21swapper/021:12:580
1115223994133,5cyclictest1188048-21ssh22:00:012
1115223994132,6cyclictest1224596-21systemd-run22:50:022
1115222994132,6cyclictest1206355-21systemd-run22:25:011
1115222994132,6cyclictest0-21swapper/100:05:011
1115222994132,6cyclictest0-21swapper/100:05:011
1115223994032,5cyclictest1119721-21cut19:25:012
1115223994031,5cyclictest1201631-21/usr/sbin/munin22:18:112
1115223994029,7cyclictest3525206-21cupsd21:49:192
1115222994032,5cyclictest1180730-21latency_hist21:50:021
1115222993931,5cyclictest1246567-21latency_hist23:20:031
1115222993930,6cyclictest266-21systemd-journal22:45:011
1115222993930,6cyclictest1295000-21ntp_states00:28:031
1115221993933,4cyclictest1264866-21cron23:45:010
1115221993921,13cyclictest151ktimers/019:42:550
1115223993830,5cyclictest1128712-21kworker/u8:11+xprtiod19:55:012
1115223993825,10cyclictest1252308-21needreboot23:27:552
111522399381,6cyclictest171rcu_preempt22:28:002
1115222993828,7cyclictest698-21cron22:00:011
1115221993832,4cyclictest1286488-21cron00:15:000
1115221993832,4cyclictest1286488-21cron00:15:000
1115221993830,6cyclictest1169631-21true21:35:010
1115221993829,6cyclictest684-21munin-node22:47:430
1115223993730,3cyclictest0-21swapper/200:20:012
1115223993728,5cyclictest1118218-21idleruntime-cro19:20:012
1115222993731,3cyclictest0-21swapper/122:40:011
1115222993730,4cyclictest956-21mta-sts-daemon23:48:011
1115222993730,4cyclictest1156895-21kernelversion21:17:521
1115222993729,5cyclictest1302778-21awk00:40:011
1115222993726,8cyclictest1201754-21unixbench_multi22:18:121
1115221993731,4cyclictest1271276-21ssh23:53:060
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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