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2026-05-22 - 20:24
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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 100 highest latencies:
System rack3slot6.osadl.org (updated Fri May 22, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2006129821,31sleep10-21swapper/107:07:391
20463999118,40cyclictest13819-21munin-run11:20:010
2005728914,65sleep00-21swapper/007:07:360
20463997944,23cyclictest14-21ksoftirqd/008:10:280
20468997730,42cyclictest0-21swapper/110:15:121
20463997742,12cyclictest14-21ksoftirqd/011:20:150
20463997511,40cyclictest26433-21munin-run07:25:000
20463997315,40cyclictest25770-21grep08:50:360
20463996914,40cyclictest6985-21ethtool08:00:220
20463996810,41cyclictest20221-21sh10:05:310
2046399678,40cyclictest24644-21telnet11:50:170
20463996614,14cyclictest17948-21uname11:30:250
20463996614,14cyclictest17948-21uname11:30:250
20463996514,23cyclictest30103-21taskset10:34:490
20463996514,23cyclictest30103-21taskset10:34:490
20463996510,41cyclictest15061-21sensors_temp08:20:330
20463996510,41cyclictest15061-21sensors_temp08:20:330
20463996427,14cyclictest14-21ksoftirqd/008:29:330
20463996423,17cyclictest26285-21aten2.4-expect11:55:160
20468996314,11cyclictest0-21swapper/110:05:371
2046399636,49cyclictest0-21swapper/010:45:130
20463996313,22cyclictest0-21swapper/011:49:340
20463996313,22cyclictest0-21swapper/009:46:520
20468996213,12cyclictest0-21swapper/112:30:181
2046399629,14cyclictest141ksoftirqd/007:20:000
2046399618,23cyclictest14-21ksoftirqd/008:09:140
2046399617,38cyclictest14-21ksoftirqd/009:58:540
20463996114,41cyclictest25008-21date10:20:020
20463996112,22cyclictest0-21swapper/007:14:180
2046399605,11cyclictest0-21swapper/010:29:420
2046399603,9cyclictest171rcuc/009:35:170
20463996022,32cyclictest31613-31find07:38:490
20468995931,16cyclictest0-21swapper/107:30:111
20463995932,21cyclictest29968-21seq09:05:120
20463995919,22cyclictest4353-21sed10:50:340
20463995913,11cyclictest14-21ksoftirqd/007:50:340
20463995911,42cyclictest171rcuc/012:36:060
20463995910,23cyclictest562-21runrttasks11:27:020
20463995910,23cyclictest562-21runrttasks10:11:450
20463995910,23cyclictest0-21swapper/011:36:270
20468995842,11cyclictest0-21swapper/108:40:311
2046899584,11cyclictest0-21swapper/107:39:011
20468995835,14cyclictest31588-21diskmemload09:10:021
20468995827,22cyclictest457-21dbus-daemon12:40:001
20468995825,22cyclictest457-21dbus-daemon07:20:001
20468995819,30cyclictest0-21swapper/108:00:131
20468995812,42cyclictest0-21swapper/112:25:241
2046399586,45cyclictest0-21swapper/012:30:110
20463995832,9cyclictest14-21ksoftirqd/012:25:490
20463995819,34cyclictest10592-21aten2.4-expect11:10:160
20463995817,24cyclictest32416-21apt-get10:40:120
20463995813,19cyclictest171rcuc/007:45:490
20468995735,17cyclictest19253-21cron08:35:001
20468995733,18cyclictest457-21dbus-daemon11:00:011
2046399577,15cyclictest14-21ksoftirqd/007:30:270
2046399576,38cyclictest21382-21diskstats11:40:220
2046399576,12cyclictest0-21swapper/009:50:230
20463995736,16cyclictest14-21ksoftirqd/009:00:160
20463995716,25cyclictest32473-21ntpq09:10:290
20463995714,23cyclictest26490-21basename08:55:150
20463995714,23cyclictest26490-21basename08:55:150
20463995711,19cyclictest243-21systemd-journal07:56:520
20463995710,30cyclictest14-21ksoftirqd/008:48:270
20468995625,22cyclictest457-21dbus-daemon10:30:001
20468995618,21cyclictest14428-21irqstats09:50:341
20468995610,38cyclictest24479-21runrttasks11:50:011
2046399562,23cyclictest6342-21taskset09:29:020
20463995616,12cyclictest14-21ksoftirqd/009:34:360
20463995614,17cyclictest151rcu_preempt12:00:120
20463995611,11cyclictest14-21ksoftirqd/010:00:210
20468995541,10cyclictest0-21swapper/108:55:261
20468995541,10cyclictest0-21swapper/108:55:261
20468995530,20cyclictest2417-21cron12:20:001
20468995512,18cyclictest15773-21cron08:25:001
20468995512,18cyclictest15773-21cron08:25:001
20468995510,9cyclictest31932-21systemctl10:40:011
20468995510,11cyclictest0-21swapper/109:02:161
2046399557,42cyclictest0-21swapper/012:20:280
2046399555,23cyclictest0-21swapper/007:26:420
20463995525,18cyclictest14-21ksoftirqd/008:35:230
20463995522,21cyclictest14-21ksoftirqd/012:16:260
20463995522,13cyclictest14-21ksoftirqd/010:39:100
20463995518,16cyclictest14-21ksoftirqd/010:59:260
20463995515,11cyclictest14-21ksoftirqd/011:01:320
20463995510,32cyclictest14-21ksoftirqd/007:41:140
2046899549,11cyclictest9354-21tail11:05:281
2046899547,42cyclictest0-21swapper/109:49:151
2046899544,12cyclictest31588-21diskmemload09:10:191
2046899543,44cyclictest15680-21latency_hist11:25:011
2046899543,18cyclictest11220-21wc08:10:441
20468995430,18cyclictest23140-21cron10:15:001
20468995426,21cyclictest11729-21cron09:45:011
20468995424,23cyclictest457-21dbus-daemon07:15:001
20468995421,28cyclictest0-21swapper/107:59:191
20468995411,38cyclictest24725-21/usr/sbin/munin08:50:311
2046399549,40cyclictest0-21swapper/009:20:310
2046399549,40cyclictest0-21swapper/009:15:290
2046399547,42cyclictest0-21swapper/012:10:300
20463995421,21cyclictest14-21ksoftirqd/009:40:490
20463995421,13cyclictest14-21ksoftirqd/008:40:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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