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2026-03-09 - 19:06
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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 Mon Mar 09, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
165389913462,64cyclictest19249-21latency_hist10:45:390
165389911759,52cyclictest277-21dbus-daemon08:35:370
165389911429,26cyclictest0-21swapper/009:10:380
165389911139,9cyclictest0-21swapper/012:25:380
165389911134,20cyclictest25050-21modprobe07:30:350
16267211014,69sleep216278-21munin-run07:05:362
16538991083,36cyclictest5763-21/usr/sbin/munin08:11:120
16538991073,50cyclictest352-21runrttasks10:53:390
165389910714,27cyclictest30902-21taskset07:46:090
165389910641,14cyclictest4851-21mailstats08:06:100
16538991053,46cyclictest352-21runrttasks09:38:030
1618921056,78sleep00-21swapper/007:04:450
16538991043,41cyclictest11879-21fschecks_time11:26:380
16538991042,41cyclictest18394-21switchtime11:36:120
16538991042,41cyclictest18394-21switchtime11:36:120
2024121030,5sleep10-21swapper/112:33:511
16538991033,34cyclictest11276-21apt-config11:25:400
16538991012,42cyclictest32694-21/usr/sbin/munin12:00:550
38482980,8sleep13851-21kernelversion09:26:011
16538999840,10cyclictest0-21swapper/009:00:350
16560999763,28cyclictest10033-21ntp_kernel_pll_09:36:042
16560999553,36cyclictest23540-21diskmemload10:20:512
16538999539,19cyclictest2105-21kworker/u17:2+nfsiod11:12:580
16560999441,45cyclictest23540-21diskmemload10:35:582
16560999433,52cyclictest0-21swapper/211:26:102
16551999463,22cyclictest14124-21apt-key11:30:381
1625129412,57sleep116266-21modprobe07:05:351
16560999217,30cyclictest30512-21sh10:10:472
16560999217,30cyclictest30512-21sh10:10:472
16551999170,14cyclictest22328-21/usr/sbin/munin10:51:031
16538999171,14cyclictest1893-21sh11:10:380
16538999171,14cyclictest1893-21sh11:10:380
1656099903,43cyclictest3157-21unin-run09:25:372
1656099903,43cyclictest3157-21unin-run09:25:372
1653899903,27cyclictest352-21runrttasks08:54:010
16560998935,47cyclictest0-21swapper/211:45:512
1656099893,36cyclictest20321-21awk08:55:352
16560998920,27cyclictest1-21systemd08:20:372
1656099883,44cyclictest7071-21/usr/sbin/munin10:25:452
1656099883,44cyclictest7071-21/usr/sbin/munin10:25:452
1656099873,42cyclictest11663-21latency_hist12:20:392
1656099873,28cyclictest24543-21timerwakeupswit07:26:102
1656099864,41cyclictest8526-21fschecks_time11:20:592
1656099864,33cyclictest6060-21tune2fs08:10:592
1656099864,32cyclictest22517-21if_eth009:00:592
1656099864,32cyclictest22517-21if_eth009:00:592
16560998634,42cyclictest0-21swapper/211:01:092
1656099863,30cyclictest18653-21tune2fs07:10:442
1656099863,30cyclictest18653-21tune2fs07:10:442
1656099863,29cyclictest25400-21latency_hist10:55:392
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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