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2025-11-26 - 08:24

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 100 highest latencies:
System rack2slot7s.osadl.org (updated Wed Nov 26, 2025 00:39:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2041027995731,8cyclictest2197394-21aten2.4-expect23:59:032
2041025995742,11cyclictest0-21swapper/023:40:010
2041025994736,7cyclictest422-21dbus-daemon21:20:020
2041027994636,7cyclictest422-21dbus-daemon23:45:012
2041025994632,11cyclictest2213446-21ssh00:20:010
2041027994534,7cyclictest956-21mta-sts-daemon21:29:142
2041025994531,10cyclictest421-21avahi-daemon21:55:360
2041025994516,22cyclictest2162367-21ssh23:09:150
2041026994436,5cyclictest2206477-21ssh00:10:011
2041025994434,7cyclictest422-21dbus-daemon23:04:270
2041026994335,5cyclictest453-21systemd-logind23:20:011
2041025994333,6cyclictest421-21avahi-daemon23:20:340
2041025994332,8cyclictest2199219-21latency_hist00:00:030
2041025994315,23cyclictest2126511-21sh22:19:130
204102699422,33cyclictest2144502-21ssh22:44:261
2041025994234,5cyclictest2071025-21systemd-run20:50:010
2041025994234,5cyclictest2071025-21systemd-run20:50:010
2041025994233,6cyclictest421-21avahi-daemon23:10:450
2041027994133,5cyclictest2137050-21missed_timers22:34:102
2041027994131,8cyclictest2050006-21munin-run19:40:012
2041026994134,5cyclictest2059016-21munin-plugin-st20:10:011
2041026994133,5cyclictest422-21dbus-daemon19:45:011
2041025994132,4cyclictest0-21swapper/021:54:180
2041025994125,13cyclictest2032753-21kworker/u8:6+events_unbound19:39:150
2041027994032,5cyclictest2213443-21cron00:20:012
2041027994027,9cyclictest453-21systemd-logind20:25:012
2041026994032,5cyclictest422-21dbus-daemon23:50:021
2041026994032,5cyclictest2090610-21fschecks_count21:29:061
2041025994026,8cyclictest12450irq/32-eth022:34:150
2041027993931,5cyclictest2216577-21unixbench_multi00:24:292
2041027993931,5cyclictest2178031-21kworker/u8:9+xprtiod23:50:012
2041027993930,6cyclictest2067994-21cron20:40:012
2041026993932,4cyclictest2074023-21sendmail21:00:011
2041026993932,4cyclictest2062055-21systemd20:20:021
2041026993931,5cyclictest2127464-21grep22:20:011
2041026993930,6cyclictest2079976-21missed_timers21:14:111
2041025993931,5cyclictest2188197-21systemd-run23:45:010
2041025993931,5cyclictest2120062-21grep22:09:280
2041025993931,5cyclictest2120062-21grep22:09:280
2041025993931,5cyclictest2044044-21sendmail-msp19:20:010
2041025993927,9cyclictest1-21systemd23:35:010
2041025993925,12cyclictest2060579-21latency_hist20:15:020
2041027993830,5cyclictest2134538-21systemd-run22:30:012
2041027993830,5cyclictest2097867-21kernelversion21:39:162
2041027993830,5cyclictest2097867-21kernelversion21:39:162
2041027993830,5cyclictest2046979-21unixbench_singl19:29:272
2041026993830,5cyclictest1-21systemd00:25:021
2041025993831,4cyclictest2099000-21grep21:40:010
2041025993831,4cyclictest2099000-21grep21:40:010
2041025993831,4cyclictest2056023-21idleruntime-cro20:00:000
2041025993830,5cyclictest2156162-21ssh23:00:010
2041025993829,6cyclictest2047039-21systemd-run19:30:020
2041025993818,12cyclictest151ktimers/020:44:120
2041027993729,5cyclictest2156216-21ssh23:00:012
2041027993727,7cyclictest2041033-21sh19:10:012
2041027993726,7cyclictest421-21avahi-daemon00:09:042
2041026993730,4cyclictest2057554-21latency_hist20:05:011
2041026993730,3cyclictest0-21swapper/100:15:011
2041026993729,5cyclictest2095270-21sed21:34:321
2041026993728,6cyclictest2054529-21systemd-run19:55:011
2041026993728,6cyclictest2054529-21systemd-run19:55:011
2041026993728,5cyclictest0-21swapper/122:40:011
204102699372,27cyclictest2194316-21ssh23:54:111
204102699371,26cyclictest2148008-21rm22:49:141
2041025993727,6cyclictest2123892-21munin-plugin-st22:15:010
2041025993727,6cyclictest2123892-21munin-plugin-st22:15:010
2041027993628,5cyclictest2226612-21latency_hist00:40:022
2041027993628,5cyclictest2123895-21munin-plugin-st22:15:002
2041027993628,5cyclictest2123895-21munin-plugin-st22:15:002
2041027993626,7cyclictest1-21systemd22:50:022
2041027993626,5cyclictest0-21swapper/223:29:192
2041026993629,4cyclictest955-21mta-sts-daemon00:25:531
2041026993628,5cyclictest2198996-21ssh00:00:011
2041026993627,6cyclictest2186925-21fschecks_time23:44:141
2041026993624,8cyclictest2108590-21missed_timers21:54:121
204102599362,26cyclictest2205490-21sh00:09:140
2041025993613,15cyclictest12450irq/32-eth000:04:250
2041027993529,3cyclictest0-21swapper/223:35:012
2041027993527,5cyclictest2201453-21fschecks_count00:04:132
2041027993527,5cyclictest2115439-21fschecks_time22:04:082
2041027993527,5cyclictest2115439-21fschecks_time22:04:082
2041027993526,6cyclictest421-21avahi-daemon21:16:242
2041027993525,6cyclictest2077041-21systemd-run21:10:022
2041026993529,3cyclictest2038488-21kworker/u8:3-xprtiod19:20:011
2041026993527,5cyclictest2184306-21unixbench_multi23:39:271
2041026993527,5cyclictest2123585-21grep22:14:291
2041026993527,5cyclictest2123585-21grep22:14:291
2041026993527,5cyclictest2060503-21cron20:15:011
2041026993526,6cyclictest2225138-21aten_r2power_fr00:39:051
204102699352,28cyclictest2212578-21ssh00:19:161
2041025993526,6cyclictest186163-21cups-browsed22:23:000
2041025993525,7cyclictest0-21swapper/021:44:090
2041025993524,4cyclictest2105401-21proc_pri21:49:220
2041025993521,8cyclictest12450irq/32-eth021:14:180
204102799345,23cyclictest2222588-21ssh00:34:212
2041027993427,5cyclictest0-21swapper/223:20:012
2041027993426,5cyclictest2045470-21grep19:24:252
2041026993425,7cyclictest2180223-21ntp_kernel_pll_23:34:151
2041026993425,6cyclictest2130977-21cron22:25:011
2041026993425,6cyclictest2047019-21munin-plugin-st19:30:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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