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2026-05-26 - 17:28
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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 rackbslot7.osadl.org (updated Tue May 26, 2026 12:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15607991053,37cyclictest31536-21apt-get11:55:390
15621991014,83cyclictest6827-21apt-get10:20:382
156219910056,39cyclictest15595-21cyclictest10:55:512
15621999475,13cyclictest2374-21systemd-journal11:44:402
244672930,10sleep3451rcuc/311:43:583
1560799933,75cyclictest5651-21ssh09:25:420
1560799913,55cyclictest624-21apt-get10:10:390
1562199903,7cyclictest0-21swapper/211:50:382
1562199902,31cyclictest352-21runrttasks08:40:032
1562199894,6cyclictest0-21swapper/210:35:332
15613998965,15cyclictest14841-21mailstats12:20:561
1475428912,45sleep014798-21mailstats06:56:070
15621998745,36cyclictest30328-21latency10:05:472
15621998744,38cyclictest0-21swapper/208:15:252
15621998744,38cyclictest0-21swapper/208:15:252
15621998740,40cyclictest0-21swapper/212:15:422
15607998762,11cyclictest181rcu_preempt10:40:240
15607998753,13cyclictest181rcu_preempt08:35:440
1562199864,7cyclictest0-21swapper/207:25:342
1562199863,41cyclictest13297-21/usr/sbin/munin11:25:322
1562199863,30cyclictest352-21runrttasks07:00:582
15613998664,14cyclictest300-21rs:main1
15621998544,33cyclictest22519-21diskmemload12:25:252
1562199854,39cyclictest25858-21/usr/sbin/munin10:51:002
1562199854,39cyclictest25858-21/usr/sbin/munin10:51:002
1562199854,36cyclictest22842-21grep10:45:582
15621998540,37cyclictest0-21swapper/211:56:432
1562199853,9cyclictest0-21swapper/210:15:342
1562199853,9cyclictest0-21swapper/210:15:342
1562199853,74cyclictest755-21sh10:10:542
1562199853,44cyclictest8284-21apt-get09:30:382
15621998532,48cyclictest0-21swapper/209:16:002
15621998461,17cyclictest300-21rs:main2
1562199843,8cyclictest0-21swapper/209:45:352
15621998434,43cyclictest0-21swapper/211:05:252
1562199843,33cyclictest31460-21sed07:45:502
1562199842,8cyclictest0-21swapper/208:55:332
15607998458,20cyclictest17853-21latency_hist08:45:260
15607998456,12cyclictest181rcu_preempt11:50:430
1560799843,51cyclictest8284-21apt-get09:30:400
141202845,53sleep214131-21apt-get06:55:362
15621998341,35cyclictest0-21swapper/209:30:222
1562199833,8cyclictest0-21swapper/209:40:342
15621998338,33cyclictest0-21swapper/211:25:252
1562199833,41cyclictest16329-21/usr/sbin/munin11:30:442
1562199833,37cyclictest16944-21taskset08:40:562
1562199833,32cyclictest28829-21/usr/sbin/munin09:11:022
1562199832,38cyclictest2080-21apt-get12:00:342
1562199832,34cyclictest17414-21/usr/sbin/munin12:25:452
1562199832,34cyclictest17414-21/usr/sbin/munin12:25:452
1560799839,30cyclictest22919-21apt-get07:20:380
15607998334,26cyclictest181rcu_preempt12:25:440
15607998334,26cyclictest181rcu_preempt12:25:440
1562199823,37cyclictest19676-21snmpd09:50:452
1562199823,36cyclictest12808-21/usr/sbin/munin10:30:512
1562199823,34cyclictest2667-21fschecks_time09:20:452
1562199823,34cyclictest2667-21fschecks_time09:20:452
1562199823,34cyclictest2461-21/usr/sbin/munin07:55:592
1562199823,33cyclictest1-21systemd11:20:242
1562199823,10cyclictest0-21swapper/208:45:332
1562199822,35cyclictest11196-21basename08:25:222
1562199822,33cyclictest20889-21cron08:55:222
1562199822,33cyclictest20889-21cron08:55:222
1561399823,62cyclictest5597-21apt-get09:25:401
1562199813,7cyclictest0-21swapper/212:05:362
1562199813,40cyclictest22525-21cp07:20:242
1562199813,40cyclictest21999-21apt11:40:222
1562199813,38cyclictest30787-21sshd07:45:252
1562199813,38cyclictest30787-21sshd07:45:252
1562199813,36cyclictest8180-21cpuspeed12:10:392
1562199813,35cyclictest22422-21apt-get07:20:382
1562199813,34cyclictest5298-21/usr/sbin/munin11:10:582
1562199813,33cyclictest24184-21ssh09:01:402
1562199813,33cyclictest24184-21ssh09:01:402
1562199813,32cyclictest26768-21processes07:30:542
1562199813,31cyclictest3826-21/usr/sbin/munin08:00:502
1562199812,36cyclictest25855-21ssh09:05:372
1562199812,35cyclictest21497-21idleruntime-cro10:45:222
1562199812,35cyclictest21497-21idleruntime-cro10:45:222
1562199812,30cyclictest18149-21/usr/sbin/munin07:05:482
1562199812,30cyclictest18149-21/usr/sbin/munin07:05:482
1562199812,30cyclictest12127-21fschecks_time09:35:442
1562199812,30cyclictest12127-21fschecks_time09:35:442
15613998158,16cyclictest1-21systemd10:17:401
15613998158,16cyclictest1-21systemd10:17:401
15613998152,19cyclictest11386-21fschecks_time12:15:421
15607998139,12cyclictest181rcu_preempt11:40:250
15607998130,28cyclictest181rcu_preempt11:40:460
15621998059,15cyclictest10716-21timerandwakeup10:25:592
15621998059,15cyclictest10716-21timerandwakeup10:25:592
1562199804,8cyclictest0-21swapper/207:10:392
1562199803,39cyclictest27518-21ps10:00:552
1562199803,36cyclictest1613-21fschecks_time11:05:452
1562199803,32cyclictest5916-21/usr/sbin/munin08:05:582
1562199803,32cyclictest5916-21/usr/sbin/munin08:05:582
1562199803,32cyclictest24792-21/usr/sbin/munin09:55:592
1562199803,31cyclictest28014-21modprobe11:50:232
15607998060,15cyclictest25739-21latency_hist09:05:260
15607998060,15cyclictest25739-21latency_hist09:05:260
1562199794,33cyclictest27748-21/usr/sbin/munin07:35:562
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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