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2026-01-09 - 00:07
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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 Thu Jan 08, 2026 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
590621650,21sleep30-21swapper/307:05:053
7044991233,66cyclictest8081-21apt-get12:34:502
7044991133,69cyclictest29672-21apt-get10:29:502
7044991133,69cyclictest29672-21apt-get10:29:502
7036991113,81cyclictest7535-21apt-get12:34:481
7044991083,82cyclictest21111-21ssh09:20:092
70229910524,41cyclictest352-21runrttasks11:26:540
7036991023,74cyclictest16182-21sh11:55:161
3029621000,8sleep20-21swapper/208:20:072
2404821000,10sleep2371rcuc/210:20:052
7044999847,11cyclictest181rcu_preempt11:02:182
7044999847,11cyclictest181rcu_preempt11:02:182
7044999765,10cyclictest181rcu_preempt11:44:542
7022999631,28cyclictest2893-21ssh10:39:210
7044999573,13cyclictest0-21swapper/211:55:242
7022999534,36cyclictest0-21swapper/012:24:470
7022999528,27cyclictest22968-21rm09:24:260
7022999430,18cyclictest25430-21ssh11:16:260
7022999430,18cyclictest25430-21ssh11:16:260
7022999428,26cyclictest28313-21sh10:27:200
7022999331,27cyclictest9620-21ssh12:36:220
7022999330,31cyclictest26757-21/usr/sbin/munin09:29:560
7022999330,29cyclictest397-21ssh12:21:380
7022999328,28cyclictest8532-21ssh11:42:170
7022999327,29cyclictest20082-21/usr/sbin/munin12:00:090
7022999326,26cyclictest25861-21/usr/sbin/munin12:10:060
7022999325,26cyclictest0-21swapper/012:05:520
702299929,45cyclictest0-21swapper/009:41:280
7022999229,28cyclictest13032-21ssh10:02:030
7022999229,28cyclictest13032-21ssh10:02:030
7022999229,24cyclictest3083-21rm11:34:040
7022999228,28cyclictest30849-21ssh12:19:310
7022999228,26cyclictest12716-21ssh10:54:540
7022999225,42cyclictest352-21runrttasks10:20:260
7022999225,34cyclictest14447-21kworker/u17:3+rpciod10:47:180
601229221,36sleep20-21swapper/207:05:092
7022999133,45cyclictest29286-21awk08:19:330
7022999127,23cyclictest352-21runrttasks07:14:480
7022999125,38cyclictest0-21swapper/009:47:230
7044999048,10cyclictest181rcu_preempt11:39:582
7044999038,11cyclictest181rcu_preempt10:36:022
7022999031,22cyclictest10020-21sh11:44:550
7022999028,27cyclictest29826-21rm10:30:070
7022999028,27cyclictest29826-21rm10:30:070
7022999024,29cyclictest0-21swapper/011:02:100
7022999024,29cyclictest0-21swapper/011:02:100
7044998935,13cyclictest181rcu_preempt11:09:492
7044998932,8cyclictest0-21swapper/211:31:372
703699893,61cyclictest29946-21ssh10:30:091
703699893,61cyclictest29946-21ssh10:30:091
7022998931,22cyclictest19047-21seq10:11:560
7022998929,31cyclictest3502-21sh10:39:510
7022998929,27cyclictest24586-21seq09:25:320
7022998929,25cyclictest13218-21diskmemload10:04:510
7022998928,20cyclictest15627-21seq07:34:000
7022998927,28cyclictest11953-21ssh10:54:080
7022998927,27cyclictest7394-21ssh12:34:130
7022998927,26cyclictest17524-21ssh11:56:210
7022998926,22cyclictest32406-21seq08:28:400
7022998925,28cyclictest6383-21/usr/sbin/munin08:45:240
7022998925,28cyclictest6383-21/usr/sbin/munin08:45:240
7022998924,26cyclictest11238-21/usr/sbin/munin09:00:110
704999882,47cyclictest8302-21chrt12:35:223
7022998835,20cyclictest19557-21ssh09:19:140
7022998829,28cyclictest23051-21ssh11:13:140
7022998829,26cyclictest10031-21ssh09:57:130
7022998828,26cyclictest20618-21ssh10:15:020
7022998825,23cyclictest13019-21/usr/sbin/munin11:49:540
562228824,34sleep00-21swapper/007:04:540
7044998758,8cyclictest181rcu_preempt09:35:442
7044998758,8cyclictest181rcu_preempt09:35:442
7044998742,13cyclictest181rcu_preempt07:49:542
7044998735,13cyclictest181rcu_preempt08:24:552
7022998731,19cyclictest27662-21unin-run08:14:340
7022998730,28cyclictest30987-21ssh09:36:260
7022998730,28cyclictest30987-21ssh09:36:260
7022998729,23cyclictest6980-21/usr/sbin/munin08:49:550
7022998729,20cyclictest3789-21taskset08:39:490
7022998729,20cyclictest3789-21taskset08:39:490
7022998728,20cyclictest7348-21ssh09:50:330
7022998728,20cyclictest7348-21ssh09:50:330
7022998728,20cyclictest20275-21taskset07:46:230
7022998727,24cyclictest19605-21ssh11:07:060
7022998726,25cyclictest15387-21ssh09:12:120
7022998718,30cyclictest29823-21latency_hist11:24:350
7044998638,17cyclictest181rcu_preempt12:25:052
7044998638,12cyclictest181rcu_preempt07:31:202
704499863,64cyclictest16796-21apt-get09:14:512
7036998667,13cyclictest23168-21latency_hist09:24:361
7022998634,23cyclictest3596-21ssh11:34:450
7022998629,19cyclictest10009-21systemd-run08:59:340
7022998627,24cyclictest12645-21df07:24:520
7022998627,24cyclictest12645-21df07:24:520
7022998626,21cyclictest0-21swapper/008:29:480
152602863,33sleep114721-21/usr/sbin/munin10:59:571
152602863,33sleep114721-21/usr/sbin/munin10:59:571
7044998559,10cyclictest181rcu_preempt10:11:572
7022998529,20cyclictest20803-21runrttasks07:49:470
7022998527,23cyclictest12939-21seq09:06:190
7022998527,23cyclictest12939-21seq09:06:190
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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