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2026-05-05 - 16:23
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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 Tue May 05, 2026 12:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2109124120,12sleep221092-21sh07:01:472
2109124120,12sleep221092-21sh07:01:472
21228991184,37cyclictest17970-21ssh11:32:010
21228991145,36cyclictest2699-21fschecks_count09:12:100
21228991144,35cyclictest28355-21modprobe09:01:470
21228991103,27cyclictest32384-21sort11:01:570
21228991103,27cyclictest32384-21sort11:01:570
212289911032,10cyclictest0-21swapper/010:42:210
212289911031,11cyclictest0-21swapper/010:06:250
212289910947,54cyclictest0-21swapper/011:12:220
212289910947,54cyclictest0-21swapper/011:12:220
21228991094,39cyclictest8442-21apt-get09:21:580
21228991084,35cyclictest774-21latency_hist07:36:490
21228991084,35cyclictest774-21latency_hist07:36:490
212289910745,55cyclictest5044-21idleruntime-cro10:16:470
21228991073,37cyclictest26802-21cat10:52:120
21228991064,31cyclictest11792-21latency_hist11:21:500
212289910632,12cyclictest0-21swapper/008:12:100
212289910537,61cyclictest0-21swapper/010:37:210
212289910537,61cyclictest0-21swapper/010:37:210
21228991052,45cyclictest21845-21ls09:47:110
21228991044,35cyclictest15965-21rm12:22:110
21228991044,32cyclictest25462-21runrttasks10:50:140
21228991043,34cyclictest29765-21find09:02:440
21228991043,33cyclictest18823-21latency_hist08:31:500
21228991033,42cyclictest24410-21cat11:42:140
21228991033,38cyclictest352-21runrttasks12:13:420
21228991033,36cyclictest19878-21grep08:32:240
21228991033,33cyclictest352-21runrttasks07:52:280
21228991024,35cyclictest11085-21grep08:07:080
212289910241,53cyclictest0-21swapper/010:22:190
212289910238,56cyclictest0-21swapper/007:41:500
21228991023,38cyclictest6408-21/usr/sbin/munin12:07:110
212289910233,7cyclictest0-21swapper/011:41:490
212289910233,7cyclictest0-21swapper/011:41:490
21228991023,36cyclictest26955-21fschecks_time07:17:110
21228991023,32cyclictest14181-21latency_hist09:31:490
21228991023,29cyclictest14575-21forks10:32:090
212289910228,13cyclictest0-21swapper/007:22:150
21228991015,40cyclictest28354-21diskmemload09:17:130
21228991014,39cyclictest352-21runrttasks12:01:010
21228991014,35cyclictest29606-21fschecks_count10:57:090
21228991014,34cyclictest12814-21ssh12:17:340
21228991013,42cyclictest5389-21taskset10:17:030
21228991013,36cyclictest21390-21/usr/sbin/munin07:02:250
212289910125,12cyclictest0-21swapper/008:52:180
212289910125,12cyclictest0-21swapper/008:52:180
21228991008,32cyclictest0-21swapper/009:11:330
21228991004,33cyclictest29903-21/usr/sbin/munin11:52:130
21228991004,32cyclictest11314-21/usr/sbin/munin10:27:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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