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2026-08-23 - 14:24
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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 rack5slot2.osadl.org (updated Sun Aug 23, 2026 12:44:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
67112202185,12sleep10-21swapper/107:06:271
66582196163,12sleep00-21swapper/007:05:460
67032186169,12sleep30-21swapper/307:06:213
69382122104,13sleep20-21swapper/207:09:202
126832460,0sleep20-21swapper/211:58:052
295892450,0sleep00-21swapper/011:17:070
90332440,0sleep29036-21unixbench_multi07:10:192
200012440,0sleep10-21swapper/109:50:211
68892160,0sleep10-21swapper/111:22:011
315022130,0sleep10-21swapper/109:40:161
716199110,1cyclictest11887-21sh12:14:170
716199103,4cyclictest32044-21munin-run10:30:000
716199102,4cyclictest4936-21awk10:00:010
716199100,6cyclictest0-21swapper/009:32:100
716199100,1cyclictest29953-21ssh12:23:150
56392100,0sleep00-21swapper/009:44:000
71619990,6cyclictest0-21swapper/011:30:020
71619990,1cyclictest19142-21ssh10:39:520
71619990,1cyclictest10515-21ssh11:56:410
71619982,3cyclictest14176-21apt-get11:10:000
71619982,1cyclictest8836-21sh09:12:460
71619982,1cyclictest5882-21ssh11:38:120
71619981,1cyclictest0-21swapper/011:20:120
71619981,1cyclictest0-21swapper/008:25:100
71619980,8cyclictest15376-21apt-get10:05:120
71619980,2cyclictest20138-21apt08:40:000
71619980,1cyclictest4892-21users10:15:210
71619980,1cyclictest4083-21munin-run11:05:000
71619980,1cyclictest32539-21munin-run09:05:000
71619980,1cyclictest29737-21systemctl12:39:590
71619980,1cyclictest27577-21perf08:55:000
71619980,1cyclictest22422-21sh11:13:500
71619980,1cyclictest20187-21munin-run07:35:000
71619980,1cyclictest18595-21sh12:00:250
71619980,1cyclictest17089-21ssh10:55:080
71619980,1cyclictest1183-21ssh12:25:130
71619980,1cyclictest10916-21ssh09:46:010
71619980,1cyclictest10242-21latency_hist08:20:000
71619980,1cyclictest10113-21grep11:40:140
71619980,1cyclictest0-21swapper/012:15:120
71619980,0cyclictest0-21swapper/012:33:360
71619971,1cyclictest802-21snmpd08:57:210
71619971,1cyclictest1450-21cat09:25:160
71619971,0cyclictest17219-21cron09:50:010
71619970,6cyclictest19929-21taskset11:45:160
71619970,1cyclictest9056-21grep07:10:200
71619970,1cyclictest7601-21expr10:50:140
71619970,1cyclictest7536-21taskset08:12:150
71619970,1cyclictest4901-21latency_hist10:00:010
71619970,1cyclictest384-21tr10:30:140
71619970,1cyclictest3752-21perl08:05:150
71619970,1cyclictest30833-21grep07:55:140
71619970,1cyclictest30343-21ntp_states11:50:170
71619970,1cyclictest30284-21munin-run07:55:000
71619970,1cyclictest29824-21ssh10:45:110
71619970,1cyclictest2812-21turbostat08:05:000
71619970,1cyclictest26705-21ls12:05:130
71619970,1cyclictest26038-21perl10:10:140
71619970,1cyclictest23434-21diskstats07:40:120
71619970,1cyclictest23249-21ls08:45:130
71619970,1cyclictest2182-21users09:05:220
71619970,1cyclictest21569-21grep09:35:170
71619970,1cyclictest21045-21fschecks_time07:35:140
71619970,1cyclictest19930-21apt-get10:40:120
71619970,1cyclictest16164-21cut07:25:140
71619970,1cyclictest13604-21fschecks_count07:20:150
71619970,1cyclictest13563-21/usr/sbin/munin09:15:170
71619970,1cyclictest12771-21hostname10:20:130
71619970,1cyclictest12657-21df11:25:130
71619970,1cyclictest12407-21chrt08:21:040
71619970,1cyclictest12249-21sed07:15:210
71619970,1cyclictest0-21swapper/009:20:120
71619970,1cyclictest0-21swapper/008:30:130
71619970,1cyclictest0-21swapper/007:45:020
71719960,1cyclictest29225-21/usr/sbin/munin09:55:183
71619960,1cyclictest20377-21taskset08:40:030
6725260,5sleep36750-21ssh11:21:563
71719955,0cyclictest9695-21kworker/3:212:16:233
71719955,0cyclictest9695-21kworker/3:212:05:113
71719955,0cyclictest9695-21kworker/3:210:35:373
71719955,0cyclictest9695-21kworker/3:207:25:173
71719955,0cyclictest0-21swapper/308:52:593
71719951,3cyclictest802-21snmpd11:55:573
71719950,5cyclictest0-21swapper/312:38:153
71719950,5cyclictest0-21swapper/312:25:443
71719950,5cyclictest0-21swapper/311:03:413
71719950,5cyclictest0-21swapper/310:57:253
71719950,5cyclictest0-21swapper/308:40:213
71719950,4cyclictest0-21swapper/310:10:113
71649950,5cyclictest0-21swapper/211:47:192
71649950,5cyclictest0-21swapper/209:45:132
71649950,0cyclictest0-21swapper/209:52:132
71629954,1cyclictest0-21swapper/109:36:001
71629951,2cyclictest0-21swapper/108:30:131
71629950,5cyclictest0-21swapper/112:03:481
13243250,0sleep10-21swapper/111:41:341
71719944,0cyclictest9695-21kworker/3:207:47:403
71719944,0cyclictest0-21swapper/310:22:393
71719944,0cyclictest0-21swapper/310:05:203
71719944,0cyclictest0-21swapper/307:10:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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