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2026-06-25 - 17:32

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

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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  Intel
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: ondemand
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot4s.osadl.org (updated Thu Jun 25, 2026 12:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
194993122130,4sleep375-21kworker/3:1-events07:15:023
22657132620,5chrt0-21swapper/312:30:223
1944495995937,9cyclictest1704890-21systemd-journal11:10:002
1944486995652,3cyclictest2105771-21kworker/u8:1+events_unbound10:20:010
1944495995140,8cyclictest1704890-21systemd-journal07:55:012
1944491995143,5cyclictest1704890-21systemd-journal12:15:171
1944491995041,7cyclictest2055971-21latency_hist09:00:011
1944491995041,7cyclictest2055971-21latency_hist09:00:011
1944486994839,7cyclictest2059986-21ntpq09:00:280
1944486994535,8cyclictest2170869-21diskstats10:55:180
1944491994437,5cyclictest2100607-21apt-get09:45:011
1944491994434,8cyclictest2150794-21/usr/sbin/munin10:35:291
1944491994339,3cyclictest2144721-21kworker/u8:2+events_unbound11:15:301
1944486994334,6cyclictest2220677-21diskstats11:45:180
1944486994233,7cyclictest2026446-21/usr/sbin/munin08:30:330
1944486994233,7cyclictest1704890-21systemd-journal11:20:180
1944491994131,7cyclictest2239308-21ntpq12:00:311
1944486994032,5cyclictest1704890-21systemd-journal12:05:000
1944495993931,6cyclictest1961040-21grep07:20:352
1944491993935,3cyclictest2066101-21kworker/u8:4+events_unbound09:10:331
1944486993931,6cyclictest1976364-21apt-get07:40:010
1944495993831,5cyclictest1704890-21systemd-journal10:05:012
1944491993834,3cyclictest2066101-21kworker/u8:4+events_unbound11:32:391
1944491993829,6cyclictest1704890-21systemd-journal09:23:161
1944486993831,5cyclictest1704890-21systemd-journal12:30:180
1944486993828,8cyclictest1995484-21ntpq07:55:280
1944491993726,2cyclictest161rcu_preempt10:50:001
1944486993733,3cyclictest2036348-21kworker/u8:1+events_unbound08:50:240
1944486993730,5cyclictest1960537-21ntpq07:20:280
1944495993626,8cyclictest1956412-21cp07:20:002
1944491993633,2cyclictest1967070-21kworker/u8:3+events_unbound07:32:191
1944491993632,3cyclictest1967070-21kworker/u8:3+events_unbound09:05:341
1944491993626,8cyclictest2001591-21/usr/sbin/munin08:05:351
1944486993626,8cyclictest2094735-21ntpq09:35:290
1944491993527,6cyclictest1976364-21apt-get07:40:001
194448699352,14cyclictest2140443-21apt-config10:25:010
20403822340,3sleep10-21swapper/108:40:341
1944491993430,3cyclictest2066092-21kworker/u8:0+events_unbound10:16:301
1944491993430,2cyclictest2241051-21irqcore12:05:221
1944491993425,2cyclictest161rcu_preempt10:10:191
1944486993425,7cyclictest2161003-21diskstats10:45:190
1944486993425,7cyclictest2036360-21/usr/sbin/munin08:40:270
19440392343,10sleep10-21swapper/107:06:351
1944491993330,2cyclictest2175572-21kworker/u8:3+events_unbound11:27:101
1944491993329,3cyclictest2144721-21kworker/u8:2+events_unbound11:36:401
1944491993329,3cyclictest2066092-21kworker/u8:0+events_unbound09:34:391
1944491993326,5cyclictest1991810-21aten2_r5power_e07:55:171
1944491993324,7cyclictest2145833-21/usr/sbin/munin10:30:271
1944486993326,5cyclictest1976364-21apt-get07:40:000
1944486993325,6cyclictest2194443-21ntpq11:15:280
1944486993324,5cyclictest1-21systemd10:40:010
1944486993310,12cyclictest0-21swapper/011:05:170
1944495993223,7cyclictest1704890-21systemd-journal08:44:592
1944491993229,2cyclictest2066101-21kworker/u8:4+events_unbound10:21:001
1944491993227,4cyclictest1967070-21kworker/u8:3+flush-8:008:30:361
1944491993226,5cyclictest2144721-21kworker/u8:2+flush-8:012:10:361
1944491993225,5cyclictest1967070-21kworker/u8:3+flush-8:008:35:321
1944491993224,6cyclictest1981899-21aten2_r5power_c07:45:181
1944491993221,8cyclictest1704890-21systemd-journal11:00:011
1944491993220,3cyclictest161rcu_preempt11:20:221
1944491993218,8cyclictest161rcu_preempt07:40:321
1944491993216,4cyclictest0-21swapper/107:20:261
1944491993215,4cyclictest0-21swapper/108:20:341
1944486993224,6cyclictest2141153-21diskstats10:25:190
1944495993126,3cyclictest1944706-21aten2_r5power_e07:10:162
1944491993128,2cyclictest2066092-21kworker/u8:0+events_unbound09:16:411
1944491993127,2cyclictest2111568-21irqcore09:55:211
1944491993126,3cyclictest2042088-21irqrtprio08:45:241
1944491993122,2cyclictest161rcu_preempt12:35:251
1944491993122,2cyclictest161rcu_preempt12:35:241
1944491993122,2cyclictest161rcu_preempt08:50:281
1944491993121,1cyclictest161rcu_preempt12:20:311
1944491993120,2cyclictest161rcu_preempt12:30:251
1944491993120,2cyclictest161rcu_preempt10:40:241
1944491993120,2cyclictest161rcu_preempt10:25:211
1944491993119,2cyclictest421rcuog/209:50:351
1944491993119,2cyclictest161rcu_preempt10:05:011
1944491993119,2cyclictest161rcu_preempt09:00:321
1944486993127,3cyclictest2006534-21kworker/u8:2+flush-8:008:10:350
1944495993025,3cyclictest2260356-21aten2_r5power_v12:25:172
1944491993021,2cyclictest161rcu_preempt11:55:321
1944491993021,2cyclictest161rcu_preempt11:45:211
1944491993020,2cyclictest161rcu_preempt11:05:261
1944491993019,2cyclictest161rcu_preempt11:10:261
1944491993019,2cyclictest161rcu_preempt09:45:181
1944491993019,2cyclictest161rcu_preempt09:35:291
1944491993019,2cyclictest161rcu_preempt08:15:241
1944491993019,2cyclictest161rcu_preempt08:10:251
194448699308,9cyclictest2225330-21/usr/sbin/munin11:50:250
194448699304,14cyclictest589-21runrttasks09:20:170
194448699304,14cyclictest1985610-21ntpq07:45:300
1944486993026,3cyclictest2144721-21kworker/u8:2+flush-8:012:15:360
1944486993025,3cyclictest2074868-21needreboot09:15:260
1944486993025,2cyclictest2130442-21sshd10:14:180
1944486993024,4cyclictest2214730-21grep11:35:370
1944486993017,2cyclictest161rcu_preempt08:15:260
1944495992923,4cyclictest1967070-21kworker/u8:3+flush-8:007:45:212
1944495992922,5cyclictest1704890-21systemd-journal11:15:002
1944491992922,2cyclictest161rcu_preempt11:40:201
1944491992919,2cyclictest161rcu_preempt07:25:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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