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2026-05-18 - 04:59
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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 Mon May 18, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
305609912844,12cyclictest0-21swapper/022:05:570
305609912437,21cyclictest0-21swapper/019:31:010
305609912354,18cyclictest31925-21latency20:41:230
30560991153,31cyclictest20604-21apt.systemd.dai23:13:410
30560991123,32cyclictest2385-21cat23:36:350
1118221090,13sleep1291rcuc/122:04:451
30560991086,45cyclictest19312-21munin-run00:05:570
30560991086,45cyclictest19312-21munin-run00:05:570
114721030,5sleep20-21swapper/220:46:242
1088921020,7sleep210895-21sed22:56:362
200582960,6sleep3451rcuc/320:06:153
30560999263,21cyclictest3489-21latency_hist19:16:000
30560999164,20cyclictest14936-21latency_hist19:50:590
30560999164,20cyclictest14936-21latency_hist19:50:590
30577998969,12cyclictest13982-21ssh23:56:202
30568998970,13cyclictest32719-21fschecks_count19:06:091
30560998963,20cyclictest29756-21cron22:36:020
3056099883,65cyclictest6488-21latency_hist22:50:560
3056899872,54cyclictest30326-21apt-get22:36:191
30560998658,19cyclictest32238-21latency_hist19:06:000
30560998658,19cyclictest32238-21latency_hist19:06:000
3056099864,74cyclictest10328-21date23:51:000
3056099864,74cyclictest10328-21date23:51:000
3057799854,48cyclictest13095-21fschecks_time23:01:212
291772857,54sleep229187-21cstates18:56:182
291772857,54sleep229187-21cstates18:56:182
30577998461,16cyclictest1566-21systemd-run00:30:582
3056099848,60cyclictest5272-21diskmemload23:31:170
30577998367,11cyclictest30547-21cyclictest21:41:202
30577998367,11cyclictest30547-21cyclictest21:41:202
30577998323,24cyclictest28548-21diskmemload22:32:312
30568998341,33cyclictest1-21systemd23:51:001
30568998341,33cyclictest1-21systemd23:51:001
30560998360,16cyclictest30547-21cyclictest21:31:320
30560998360,16cyclictest30547-21cyclictest21:31:320
30560998347,13cyclictest181rcu_preempt20:51:090
2996128311,34sleep10-21swapper/118:56:461
2996128311,34sleep10-21swapper/118:56:461
30577998213,27cyclictest27396-21seq00:19:052
30577998159,16cyclictest30409-21latency_hist23:31:012
30577998150,22cyclictest27177-21sh21:36:322
30568998162,13cyclictest7088-21cpuspeed19:26:141
30568998158,17cyclictest2016-21munin-run20:50:571
30568998153,20cyclictest26894-21latency_hist22:31:001
3056899813,71cyclictest25045-21apt-get20:21:141
3056899812,47cyclictest12177-21apt-get22:06:151
30560998160,14cyclictest14400-21awk23:56:310
30560998147,12cyclictest181rcu_preempt22:06:290
30560998139,15cyclictest181rcu_preempt19:11:000
3058499807,47cyclictest0-21swapper/319:21:253
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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