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2025-11-11 - 12:32
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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 rack2slot7.osadl.org (updated Tue Nov 11, 2025 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1290104994128,7cyclictest1486560-21apt-key00:00:492
129010299412,24cyclictest0-21swapper/023:00:520
1290102993928,8cyclictest1470381-21ssh23:43:010
129010299369,3cyclictest0-21swapper/022:47:430
1290102993620,3cyclictest1378982-21ssh22:05:520
1290103993422,12cyclictest1480393-21ssh23:53:351
129010299341,22cyclictest1521740-21fschecks_count00:43:000
1290102993129,2cyclictest0-21swapper/000:18:040
1290102993118,6cyclictest1486264-21dpkg00:00:480
129010399307,5cyclictest171rcu_preempt23:28:051
129010399304,8cyclictest171rcu_preempt21:30:521
1290103992918,9cyclictest1459502-21kworker/u8:1+events_unbound00:15:351
129010299291,25cyclictest0-21swapper/021:43:010
129010299291,17cyclictest0-21swapper/022:58:010
129010299281,6cyclictest1332755-21grep21:17:530
129010299281,17cyclictest1474869-21ntpq23:48:010
129010299280,5cyclictest1375487-21fschecks_count22:02:540
129010299280,5cyclictest1375487-21fschecks_count22:02:540
129010299280,24cyclictest0-21swapper/023:10:530
129010499276,2cyclictest11050irq/107-eth%d22:53:022
129010299273,4cyclictest171rcu_preempt23:30:520
1290102992722,4cyclictest0-21swapper/022:26:150
1290102992720,2cyclictest1327620-21latency_hist21:05:490
129010299271,18cyclictest0-21swapper/020:37:510
129010499263,3cyclictest1399838-21ssh22:28:052
129010399264,18cyclictest111788-21systemd-journal00:28:031
129010299269,2cyclictest0-21swapper/022:38:040
129010299263,19cyclictest1290065-21munin-run19:15:480
129010299262,16cyclictest1455548-21/usr/sbin/munin23:28:010
1290102992613,2cyclictest1378376-21sendmail-msp22:13:550
129010499259,12cyclictest1005-21mta-sts-daemon20:21:142
129010399253,4cyclictest171rcu_preempt20:18:001
129010299252,14cyclictest0-21swapper/022:33:040
1290102992518,5cyclictest1351989-21fschecks_count21:37:550
129010299251,12cyclictest0-21swapper/023:23:050
129010299250,23cyclictest1434649-21sendmail-msp23:08:380
129010299250,19cyclictest0-21swapper/021:28:010
129010399242,5cyclictest171rcu_preempt20:43:001
129010399242,19cyclictest1430324-21ssh23:00:521
129010299242,17cyclictest1337179-21/usr/sbin/munin21:23:060
1290102992412,2cyclictest0-21swapper/000:33:040
129010299241,18cyclictest1493584-21grep00:08:020
1290102992411,1cyclictest0-21swapper/000:22:540
129010299240,2cyclictest1413761-21ntp_offset22:43:000
129010599233,6cyclictest0-21swapper/323:43:333
129010499234,15cyclictest619-21mta-sts-daemon23:25:482
129010499234,13cyclictest1364740-21ssh21:51:042
1290104992319,3cyclictest1453633-21sendmail-msp23:30:522
129010399232,5cyclictest171rcu_preempt00:43:051
129010299233,17cyclictest1340408-21sendmail-msp21:30:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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