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2026-07-19 - 06:11
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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 Sun Jul 19, 2026 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1027722220,19sleep30-21swapper/318:52:253
9689214010,22sleep00-21swapper/018:51:580
11150991113,67cyclictest6606-21runrttasks23:17:120
2863921080,5sleep228638-21ssh21:12:132
2863921080,5sleep228638-21ssh21:12:132
111509910843,58cyclictest16171-21grep23:32:220
111509910543,54cyclictest11857-21apt-key20:36:470
111639910474,20cyclictest2374-21systemd-journal22:22:171
111639910474,20cyclictest2374-21systemd-journal22:22:171
11150991032,72cyclictest13308-21seq21:41:380
11150991032,62cyclictest13025-21seq22:34:140
111639910219,54cyclictest15567-21apt-get20:47:031
111509910233,47cyclictest10550-21ssh23:23:230
111719910158,8cyclictest181rcu_preempt20:47:502
11171991013,59cyclictest26267-21ssh22:56:542
11171991013,59cyclictest26267-21ssh22:56:542
111509910139,53cyclictest0-21swapper/022:57:160
111509910139,53cyclictest0-21swapper/022:57:160
111509910050,44cyclictest28714-21/usr/sbin/munin22:07:210
111509910050,44cyclictest28714-21/usr/sbin/munin22:07:210
111509910038,54cyclictest0-21swapper/000:16:530
111509910038,54cyclictest0-21swapper/000:16:530
11150991003,63cyclictest3747-21grep23:12:170
11150999946,45cyclictest0-21swapper/019:22:100
1115099992,59cyclictest22138-21seq22:49:300
1115099992,23cyclictest6411-21ssh21:29:080
1115099992,23cyclictest6411-21ssh21:29:080
1115099974,52cyclictest0-21swapper/019:58:220
11150999742,49cyclictest14465-21ssh22:37:060
11150999742,49cyclictest14465-21ssh22:37:060
11150999740,52cyclictest0-21swapper/019:07:110
1115099973,62cyclictest12089-21apt-get20:37:040
11150999735,52cyclictest0-21swapper/022:22:090
11150999735,52cyclictest0-21swapper/022:22:090
230552960,6sleep00-21swapper/021:02:390
11150999640,49cyclictest0-21swapper/000:01:430
1115099963,88cyclictest0-21swapper/022:01:560
1115099953,58cyclictest3406-21runrttasks20:10:290
11150999534,52cyclictest21533-21modprobe21:01:440
1115099951,55cyclictest0-21swapper/021:20:580
1115099943,62cyclictest13917-21ssh23:29:190
1115099942,6cyclictest0-21swapper/022:11:540
1115099942,59cyclictest22643-21seq19:29:470
11150999415,55cyclictest0-21swapper/021:25:080
11150999340,45cyclictest30001-21fschecks_time19:52:060
1115099933,77cyclictest8629-21apt-get20:26:560
1115099933,77cyclictest8629-21apt-get20:26:560
1115099932,6cyclictest0-21swapper/019:41:550
1117199923,24cyclictest352-21runrttasks20:38:202
11150999241,45cyclictest3372-21sh22:17:260
11150999236,48cyclictest5561-21fschecks_count20:17:050
11150999232,53cyclictest0-21swapper/023:06:560
11150999231,53cyclictest27991-21sh21:11:490
1117199914,39cyclictest352-21runrttasks00:01:592
11150999142,44cyclictest0-21swapper/021:32:220
11150999142,43cyclictest23672-21ssh23:46:160
11150999138,47cyclictest352-21runrttasks22:52:180
1115099913,77cyclictest0-21swapper/020:51:560
1115099912,62cyclictest24588-21kworker/u17:1+rpciod23:02:110
997029011,43sleep20-21swapper/218:52:122
11171999044,39cyclictest0-21swapper/222:22:212
11171999044,39cyclictest0-21swapper/222:22:212
1117199903,40cyclictest15160-21timerandwakeup22:37:202
1117199903,40cyclictest15160-21timerandwakeup22:37:202
1115099903,7cyclictest0-21swapper/000:21:560
1115099903,77cyclictest6608-21ssh00:11:330
11150999037,46cyclictest31115-21ssh21:17:060
11150999037,46cyclictest31115-21ssh21:17:060
1115099903,61cyclictest7587-21awk00:12:130
1115099903,61cyclictest7587-21awk00:12:130
11163998917,23cyclictest0-21swapper/123:40:271
11150998932,49cyclictest0-21swapper/023:51:460
11150998932,49cyclictest0-21swapper/023:51:460
11150998931,49cyclictest23173-21cstates19:32:020
11150998931,49cyclictest23173-21cstates19:32:020
11171998845,35cyclictest0-21swapper/200:17:092
11171998845,35cyclictest0-21swapper/200:17:092
11171998835,46cyclictest25033-21sort19:37:372
11171998835,46cyclictest25033-21sort19:37:372
11171998817,31cyclictest29347-21diskmemload23:55:152
1117199873,36cyclictest23055-21/usr/sbin/munin19:32:192
1117199873,36cyclictest23055-21/usr/sbin/munin19:32:192
11163998731,49cyclictest0-21swapper/119:26:591
1115099873,6cyclictest0-21swapper/020:01:540
1115099873,5cyclictest0-21swapper/021:46:560
1115099872,70cyclictest16625-21apt-get19:12:020
1115099872,63cyclictest22470-21latency_hist21:56:450
1117199864,40cyclictest29044-21fschecks_time22:07:082
1117199864,40cyclictest29044-21fschecks_time22:07:082
1117199864,40cyclictest10651-21/usr/sbin/munin21:37:082
11171998616,31cyclictest1-21systemd00:01:442
11171998614,27cyclictest29234-21seq19:48:222
1115099863,76cyclictest13672-21apt-get21:41:590
1115099863,74cyclictest18173-21apt-get23:37:010
11150998637,43cyclictest0-21swapper/020:46:450
11150998633,46cyclictest0-21swapper/022:27:080
1115099862,76cyclictest12272-21/usr/sbin/munin18:57:200
1115099862,75cyclictest28810-21/usr/sbin/munin19:47:170
1115099862,59cyclictest2419-21ssh00:03:550
11150998616,63cyclictest23218-21/usr/sbin/munin21:57:100
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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