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2026-03-27 - 19:33
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 rackbslot7.osadl.org (updated Fri Mar 27, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14871991152,89cyclictest7152-21apt-get11:19:582
14867991062,85cyclictest6123-21apt-get10:24:401
14867991062,85cyclictest6123-21apt-get10:24:401
985121000,7sleep00-21swapper/009:37:270
1486799973,77cyclictest11097-21apt-get09:39:401
1469929612,53sleep014731-21munin-run07:04:240
1373029610,59sleep213743-21kernelversion06:59:532
14867999549,39cyclictest0-21swapper/111:10:001
1354229556,20sleep10-21swapper/106:59:481
14867999444,42cyclictest0-21swapper/109:44:341
1487199933,57cyclictest39-21ksoftirqd/212:29:342
14871999064,17cyclictest2580-21processes09:24:592
1486799904,8cyclictest0-21swapper/111:29:371
1486799904,8cyclictest0-21swapper/111:29:371
1486799903,72cyclictest0-21swapper/108:49:371
14871998970,13cyclictest13903-21apt-key09:44:262
14867998945,37cyclictest0-21swapper/112:29:591
1486799892,25cyclictest27673-21sh11:54:061
14871998865,15cyclictest31392-21ssh11:59:452
14867998872,10cyclictest20124-21idleruntime-cro08:59:241
14867998872,10cyclictest20124-21idleruntime-cro08:59:241
1486799883,34cyclictest4501-21ntp_kernel_pll_11:14:511
1486299887,61cyclictest15-21ksoftirqd/010:34:410
1486299887,61cyclictest15-21ksoftirqd/010:34:410
14867998774,8cyclictest0-21swapper/111:19:461
14867998768,12cyclictest10609-21unin-run09:39:241
1486799874,72cyclictest0-21swapper/109:54:341
1486799874,71cyclictest0-21swapper/110:44:391
1486799873,39cyclictest3999-21runrttasks10:20:011
1486799873,39cyclictest28815-21/usr/sbin/munin07:44:501
14862998755,24cyclictest3998-21apt-key08:09:280
14871998649,9cyclictest181rcu_preempt10:14:592
14871998629,8cyclictest181rcu_preempt08:50:002
1486799863,8cyclictest0-21swapper/110:04:351
1486799863,77cyclictest0-21swapper/110:49:351
1486799863,74cyclictest0-21swapper/107:49:361
1486799863,34cyclictest4217-21apt-get08:09:451
1486799862,9cyclictest0-21swapper/107:59:381
1486299865,39cyclictest15-21ksoftirqd/012:32:510
1487199854,46cyclictest12018-21modprobe08:34:242
1487199854,46cyclictest12018-21modprobe08:34:242
1486799854,75cyclictest0-21swapper/109:49:391
1486799854,75cyclictest0-21swapper/109:49:391
1486799854,14cyclictest21921-21apt-get07:24:361
1486799853,71cyclictest10685-21ssh12:19:391
1486799853,39cyclictest27649-21/usr/sbin/munin07:39:581
1486799853,38cyclictest15023-21/usr/sbin/munin07:04:341
1486799853,38cyclictest15023-21/usr/sbin/munin07:04:341
1486799853,37cyclictest16548-21kernelversion11:34:481
1486799853,37cyclictest14377-21/usr/sbin/munin08:39:501
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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