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2026-07-03 - 03:17

OSADL QA Farm on Real-time of Mainline Linux

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

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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  Phytec
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 rackbslot5s.osadl.org (updated Fri Jul 03, 2026 00:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3937007995019,12cyclictest3971854-21cron20:50:001
3937002994533,10cyclictest121ktimers/000:35:110
3937011994438,4cyclictest4027313-21kworker/u8:0+events_unbound23:48:232
3937011994337,4cyclictest4030347-21kworker/u8:1+events_unbound23:58:242
3937011994335,6cyclictest4011929-21kworker/u8:1+events_unbound22:48:042
3937007994316,9cyclictest3979696-21ntp_states21:10:201
3937011994236,4cyclictest4018501-21kworker/u8:0+events_unbound23:23:122
3937011994231,4cyclictest3999793-21kworker/u8:2+events_unbound22:18:012
3937002994235,4cyclictest4037687-21apt-config00:00:010
3937007994126,11cyclictest4029600-21/usr/sbin/munin23:35:181
3937014994033,4cyclictest3994697-21http21:55:013
3937011994034,4cyclictest3936652-21kworker/u8:3+events_unbound19:12:312
3937007994031,4cyclictest0-21swapper/100:08:241
3937007994013,10cyclictest4015473-21cat22:55:011
3937007993932,4cyclictest3970154-21cron20:45:011
3937007993931,5cyclictest3963344-21idleruntime-cro20:25:001
3937007993910,11cyclictest3942887-21/usr/sbin/munin19:25:251
3937011993826,8cyclictest301rcuc/221:15:002
3937007993828,4cyclictest3974005-21apt-get20:55:111
3937007993824,10cyclictest3990715-21cron21:41:001
3937007993823,10cyclictest0-21swapper/120:05:121
3937014993728,4cyclictest0-21swapper/300:25:193
3937011993731,4cyclictest3987271-21kworker/u8:1+events_unbound21:34:412
3937011993730,5cyclictest4006514-21kworker/u8:1+events_unbound22:26:412
3937011993720,9cyclictest131rcu_preempt22:00:262
3937011993718,4cyclictest0-21swapper/223:18:142
3937011993718,16cyclictest311ktimers/221:53:592
3937011993713,16cyclictest3936995-21cyclictest22:35:162
3937007993726,8cyclictest4012238-21/usr/sbin/munin22:45:141
3937007993726,7cyclictest4035021-21/usr/sbin/munin23:50:231
3937007993726,7cyclictest4015704-21/usr/sbin/munin22:55:161
3937007993726,7cyclictest4003932-21/usr/sbin/munin22:20:181
3937007993725,7cyclictest4036493-21/usr/sbin/munin23:55:201
3937007993720,3cyclictest4022854-21memory23:15:201
3937007993713,11cyclictest3941570-21expr19:20:201
3937007993711,9cyclictest4046560-21egrep00:25:171
3937011993621,10cyclictest301rcuc/220:30:002
3937007993627,6cyclictest4011011-21/usr/sbin/munin22:40:211
3937007993626,6cyclictest4041377-21/usr/sbin/munin00:10:221
3937007993625,7cyclictest4008895-21/usr/sbin/munin22:35:141
3937007993625,7cyclictest3995707-21/usr/sbin/munin21:55:221
3937007993625,7cyclictest3993746-21/usr/sbin/munin21:50:221
3937007993624,9cyclictest4032074-21cron23:41:001
3937002993628,6cyclictest4029006-21grep23:35:000
3937002993626,7cyclictest4009796-21head22:35:270
3937002993626,6cyclictest0-21swapper/022:20:000
3937014993527,4cyclictest0-21swapper/323:00:213
3937011993524,7cyclictest3954599-21sendmail20:00:002
3937011993516,4cyclictest0-21swapper/220:58:152
3937011993514,9cyclictest131rcu_preempt00:25:182
3937007993529,3cyclictest3984468-21apt-get21:25:131
3937007993526,6cyclictest3955853-21/usr/sbin/munin20:00:261
3937007993526,5cyclictest0-21swapper/123:05:161
3937007993525,7cyclictest4018510-21cron23:02:001
3937007993525,7cyclictest4002046-21/usr/sbin/munin22:15:151
3937007993525,7cyclictest3992556-21sshd21:47:411
3937007993525,7cyclictest3986287-21/usr/sbin/munin21:30:151
3937007993525,7cyclictest3976244-21/usr/sbin/munin21:00:221
3937007993525,7cyclictest3976244-21/usr/sbin/munin21:00:221
3937007993524,8cyclictest4043421-21/usr/sbin/munin00:15:191
3937007993524,8cyclictest4043421-21/usr/sbin/munin00:15:181
3937007993524,7cyclictest4020816-21/usr/sbin/munin23:10:131
3937007993516,15cyclictest3954018-21grep19:55:241
3937014993425,4cyclictest0-21swapper/322:50:273
3937014993423,7cyclictest4002987-21grep22:15:263
3937014993423,7cyclictest0-21swapper/323:55:263
393701199346,17cyclictest32-21ksoftirqd/221:20:012
3937011993425,5cyclictest0-21swapper/220:10:252
3937011993425,5cyclictest0-21swapper/220:10:242
3937011993424,6cyclictest0-21swapper/223:10:242
3937011993423,5cyclictest3999793-21kworker/u8:2+events_unbound22:34:432
3937011993415,12cyclictest131rcu_preempt23:05:212
3937007993427,4cyclictest3996835-21apt-get22:00:131
3937007993425,6cyclictest3978403-21/usr/sbin/munin21:05:261
3937007993424,7cyclictest3972536-21/usr/sbin/munin20:50:161
3937007993424,7cyclictest3951091-21cron19:49:001
3937007993424,7cyclictest3949137-21cron19:41:001
3937007993424,7cyclictest3939300-21meminfo19:15:031
3937007993424,6cyclictest3963566-21apt-get20:25:101
3937007993423,8cyclictest3999744-21cron22:07:001
3937007993423,8cyclictest3999744-21cron22:07:001
3937007993422,9cyclictest4000577-21/usr/sbin/munin22:10:171
3937007993422,7cyclictest3981121-21/usr/sbin/munin21:15:181
3937007993421,10cyclictest3987869-21/usr/sbin/munin21:35:221
3937007993419,11cyclictest3965842-21chrt20:30:221
3937002993425,6cyclictest4035350-21grep23:50:260
3937002993425,6cyclictest0-21swapper/022:00:000
3937002993422,8cyclictest3990657-21grep21:40:260
3937014993324,4cyclictest0-21swapper/300:33:323
393701199338,18cyclictest32-21ksoftirqd/221:00:272
393701199338,18cyclictest32-21ksoftirqd/221:00:272
3937011993325,5cyclictest301rcuc/221:45:142
3937011993324,6cyclictest3946453-21fschecks_count19:35:162
3937011993318,5cyclictest131rcu_preempt19:42:522
3937011993316,8cyclictest131rcu_preempt00:10:152
3937011993315,4cyclictest131rcu_preempt22:53:152
3937011993315,4cyclictest131rcu_preempt19:29:552
3937011993313,10cyclictest131rcu_preempt20:40:222
3937007993326,3cyclictest3960142-21apt-get20:15:111
3937007993324,6cyclictest3937397-21/usr/sbin/munin19:10:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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