You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-09-18 - 05:35

OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

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 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  
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 rack2slot7s.osadl.org (updated Fri Sep 18, 2026 00:42:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1757040996144,8cyclictest0-21swapper/219:36:142
1757040994938,6cyclictest47853-21cups-browsed23:20:512
1757038994929,11cyclictest12650irq/32-eth023:36:120
1757038994837,8cyclictest265-21systemd-journal21:30:010
1757040994734,8cyclictest420-21avahi-daemon21:21:142
1757040994734,8cyclictest420-21avahi-daemon21:21:142
1757040994635,8cyclictest47853-21cups-browsed22:55:012
1757039994636,7cyclictest1857255-21munin-run22:55:021
1757039994536,6cyclictest1814627-21latency_hist21:45:021
175703999451,39cyclictest271ktimers/119:31:121
1757040994433,8cyclictest421-21dbus-daemon19:20:022
175703999443,32cyclictest1864759-21ssh23:06:231
175703999443,32cyclictest1864759-21ssh23:06:231
175703999442,35cyclictest1916560-21ssh00:31:161
175703999442,35cyclictest1916560-21ssh00:31:161
1757038994430,11cyclictest1872496-21sendmail23:20:010
1757040994334,6cyclictest1778048-21idleruntime-cro20:20:012
1757039994336,3cyclictest0-21swapper/122:50:011
1757039994335,5cyclictest485-21in:imuxsock21:55:011
1757039994335,5cyclictest1886233-21mailstats23:41:241
1757038994337,4cyclictest1909094-21ssh00:20:010
1757040994234,5cyclictest1906090-21latency_hist00:15:022
1757040994234,5cyclictest1868621-21kworker/u8:3-xprtiod23:20:012
1757040994231,7cyclictest1916874-21ssh00:31:232
1757040994231,7cyclictest1916874-21ssh00:31:232
1757039994237,2cyclictest0-21swapper/122:20:011
1757039994223,11cyclictest271ktimers/120:26:131
1757038994230,8cyclictest151ktimers/019:31:110
1757038994223,13cyclictest12650irq/32-eth000:21:220
1757040994129,7cyclictest1876775-21sh23:26:132
1757039994134,4cyclictest1848068-21sendmail22:40:011
1757039994132,5cyclictest1779746-21latency_hist20:25:021
1757039994132,5cyclictest1779746-21latency_hist20:25:021
175703999412,34cyclictest1800396-21ssh21:21:131
175703999412,34cyclictest1800396-21ssh21:21:131
1757038994129,9cyclictest1799166-21munin-run21:20:010
1757038994129,9cyclictest1799166-21munin-run21:20:010
175703999403,32cyclictest1910498-21ssh00:21:201
1757039994032,5cyclictest1884693-21munin-run23:40:011
1757039994032,5cyclictest1817571-21systemd-run21:50:011
1757039994031,7cyclictest0-21swapper/100:00:021
1757038994031,6cyclictest1773707-21latency_hist20:05:020
1757040993928,7cyclictest47837-21cupsd21:33:102
175704099391,31cyclictest1831048-21ssh22:11:152
1757039993931,5cyclictest1826738-21latency_hist22:05:021
1757039993931,5cyclictest1773580-21systemd-run20:05:011
1757039993929,6cyclictest420-21avahi-daemon21:55:341
1757038993932,4cyclictest1826701-21grep22:05:010
1757038993931,6cyclictest47837-21cupsd23:42:180
1757038993931,4cyclictest1001-21mta-sts-daemon00:30:560
1757038993931,4cyclictest1001-21mta-sts-daemon00:30:560
1757038993929,6cyclictest1001-21mta-sts-daemon21:52:010
1757040993828,7cyclictest1001-21mta-sts-daemon22:21:182
1757040993828,7cyclictest1001-21mta-sts-daemon22:21:182
175703999383,25cyclictest1867681-21ssh23:11:181
1757039993831,3cyclictest0-21swapper/122:21:151
1757039993831,3cyclictest0-21swapper/122:21:151
1757039993830,5cyclictest1784071-21systemd-run20:40:021
1757039993820,10cyclictest271ktimers/121:06:181
1757038993831,4cyclictest1875745-21latency_hist23:25:020
1757038993831,4cyclictest1862134-21unixbench_multi23:01:270
1757038993815,18cyclictest1849418-21sh22:41:180
1757040993725,7cyclictest1861922-21switchtime23:01:262
175704099372,29cyclictest1901327-21ssh00:06:192
175703999373,26cyclictest1892065-21ssh23:51:181
1757039993727,7cyclictest1858300-21latency22:56:101
1757039993726,7cyclictest47853-21cups-browsed22:10:031
1757038993731,4cyclictest1791570-21systemd-run21:05:010
1757038993729,5cyclictest151ktimers/023:31:150
1757040993628,5cyclictest421-21dbus-daemon22:00:012
1757040993628,3cyclictest0-21swapper/221:41:162
1757040993627,4cyclictest0-21swapper/222:16:032
175703999362,27cyclictest1876856-21ssh23:26:171
1757039993612,16cyclictest28-21ksoftirqd/100:01:271
175703899363,21cyclictest1889262-21ssh23:46:220
1757038993630,4cyclictest1837693-21tail22:21:250
1757038993630,4cyclictest1837693-21tail22:21:250
1757038993628,6cyclictest1814534-21true21:45:010
1757040993528,3cyclictest1804502-21kworker/u8:8-xprtiod21:50:012
1757040993527,5cyclictest1-21systemd00:00:012
1757040993524,8cyclictest694-21cron23:10:012
1757040993524,8cyclictest694-21cron23:10:012
1757040993524,8cyclictest1889021-21ntp_kernel_pll_23:46:152
1757040993521,10cyclictest47853-21cups-browsed21:11:302
1757040993513,17cyclictest265-21systemd-journal00:23:302
1757039993528,4cyclictest1799156-21ssh21:20:011
1757039993528,4cyclictest1799156-21ssh21:20:011
1757039993527,5cyclictest1796106-21munin-plugin-st21:15:011
1757039993519,12cyclictest271ktimers/119:51:111
1757038993530,2cyclictest0-21swapper/021:21:150
1757038993530,2cyclictest0-21swapper/021:21:150
1757038993528,4cyclictest1806201-21gltestperf21:31:060
175703899352,28cyclictest1821910-21ssh21:56:190
1757038993522,10cyclictest47853-21cups-browsed23:08:220
1757038993522,10cyclictest47853-21cups-browsed23:08:220
1757040993427,3cyclictest0-21swapper/222:46:152
1757040993426,5cyclictest1782490-21head20:31:242
1757040993426,4cyclictest0-21swapper/200:01:032
1757040993425,6cyclictest1763073-21systemd-run19:30:022
1757040993425,4cyclictest1001-21mta-sts-daemon23:39:582
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional