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2026-03-06 - 18:12
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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 06, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2632121709,49sleep226405-21grep07:02:252
2535121695,19sleep00-21swapper/007:01:000
268769910553,43cyclictest17400-21latency_hist10:25:492
26026210118,47sleep10-21swapper/107:02:191
2687699964,8cyclictest0-21swapper/210:16:102
2687699964,8cyclictest0-21swapper/210:16:102
26876999640,47cyclictest0-21swapper/207:36:222
26876999633,12cyclictest0-21swapper/209:41:332
26876999432,57cyclictest0-21swapper/210:26:062
26866999477,11cyclictest22448-21systemd-run08:30:480
26876999343,42cyclictest0-21swapper/211:51:102
26876999343,42cyclictest0-21swapper/211:51:102
26876999267,15cyclictest18175-21cron11:20:462
2687699923,79cyclictest13006-21apt-get08:01:052
26876999237,47cyclictest0-21swapper/209:15:502
26876999237,47cyclictest0-21swapper/209:15:502
26876999236,48cyclictest26566-21netstat09:46:142
2687699923,35cyclictest14370-21fschecks_time09:26:102
2687699923,33cyclictest6210-21ssh10:06:192
2687699923,33cyclictest6210-21ssh10:06:192
26876999233,10cyclictest0-21swapper/207:46:232
2687699922,30cyclictest18444-21grep08:16:192
2687699922,30cyclictest18444-21grep08:16:192
26876999154,16cyclictest26857-21cyclictest07:15:512
2687699913,32cyclictest18814-21latency_hist12:15:502
2687699913,32cyclictest18814-21latency_hist12:15:502
26876999127,12cyclictest0-21swapper/211:36:122
2687699912,33cyclictest2072-21grep10:52:432
2687699912,33cyclictest2072-21grep10:52:432
26876999122,14cyclictest0-21swapper/211:15:502
26876999039,45cyclictest0-21swapper/211:46:092
26876999034,7cyclictest0-21swapper/211:31:232
2687699903,39cyclictest20147-21cpuspeed09:36:042
26876999033,9cyclictest0-21swapper/210:46:122
2687699903,33cyclictest6519-21/usr/sbin/munin11:01:112
2687699903,27cyclictest11314-21fschecks_count09:21:092
2687699903,27cyclictest11314-21fschecks_count09:21:092
26876998947,36cyclictest23190-21ntp_kernel_pll_08:31:152
2687699893,38cyclictest25655-21modprobe08:40:472
2687699893,36cyclictest29004-21/usr/sbin/munin09:51:222
2687699893,36cyclictest29004-21/usr/sbin/munin09:51:222
26876998930,14cyclictest26521-21latency_hist10:40:492
26876998929,8cyclictest0-21swapper/212:31:142
26876998928,8cyclictest0-21swapper/209:31:242
26876998926,9cyclictest0-21swapper/211:30:472
2687699892,35cyclictest7214-21sort11:56:092
2687699892,34cyclictest27602-21runrttasks12:30:472
2687699892,34cyclictest27602-21runrttasks12:30:472
2687699892,33cyclictest5419-21latency_hist10:05:502
2687699892,31cyclictest2536-21cut09:06:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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