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2025-06-17 - 02:05
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Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 25 million
Resolution of latency scale: reduced 
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack3slot5.osadl.org.osadl.org (updated Tue Jun 17, 2025 00:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
151150600,0ktimers/0125531sleep19:05:440
1514710,0ktimers/0197951sleep19:41:160
1514520,0ktimers/0110481sleep00:01:450
1514510,0ktimers/0170041sleep21:57:210
134399944832,0cyclictest5255-21cron21:05:160
134399944731,0cyclictest3377-21syslogd20:05:160
1343999444103,0cyclictest26876-21date20:15:240
1514430,0ktimers/0206471sleep22:16:310
1514370,0ktimers/0221891sleep22:22:440
134399943535,0cyclictest50-21kswapd021:20:240
134399943529,0cyclictest6046-21missed_timers21:07:040
134399943392,0cyclictest27991-21ntpq22:50:480
134399943133,0cyclictest22823-21munin-node19:56:120
134399943027,0cyclictest0-21swapper23:15:160
1514280,0ktimers/0248541sleep22:36:180
134399942737,0cyclictest29526-21munin-node22:56:520
1514260,0ktimers/0207431sleep19:45:330
134399942632,0cyclictest17844-21kernelversion22:01:560
134399942629,0cyclictest3462-21snmpd21:45:200
134399942585,0cyclictest4413-21df_inode23:31:240
134399942527,0cyclictest10698-21cron21:30:160
1343999425124,0cyclictest10901-21chrt21:30:420
1514240,0ktimers/0269241sleep22:46:000
134399942481,0cyclictest3433-21nscd20:26:560
1514230,0ktimers/0188321sleep22:06:420
134399942229,0cyclictest8480-21mailstats23:50:320
134399942128,0cyclictest5485-21grep23:36:240
134399942126,0cyclictest25788-21mailstats22:40:440
134399942028,0cyclictest31898-21wc23:07:120
134399941933,0cyclictest21294-21kworker/u4:2+flush-8:020:41:240
134399941928,0cyclictest30260-21cut20:30:360
134399941829,0cyclictest2333-21chrt23:21:400
134399941829,0cyclictest19224-21grep19:37:200
134399941825,0cyclictest14608-21wc19:15:280
134399941790,0cyclictest14669-21sendmail_mailtr00:20:320
134399941737,0cyclictest4021-21cron23:30:160
134399941729,0cyclictest2680-21grep20:51:560
134399941726,0cyclictest12882-21mailstats00:10:440
134399941637,0cyclictest31505-21basename20:36:160
134399941627,0cyclictest28708-21sort20:22:080
134399941530,0cyclictest3721-21entropy20:56:480
134399941428,0cyclictest14111-21cut21:45:400
134399941328,0cyclictest3439-21nscd20:10:160
134399941328,0cyclictest18141-21chrt00:36:120
134399941327,0cyclictest15312-21latency_hist19:20:320
134399941326,0cyclictest8906-21grep21:21:240
134399941325,0cyclictest15181-21cron19:20:160
134399941228,0cyclictest22159-21switchtime19:51:280
134399941228,0cyclictest16734-21sh00:30:160
134399941227,0cyclictest18129-21missed_timers19:32:080
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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