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2026-08-15 - 00:30
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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 rackaslot8.osadl.org (updated Fri Aug 14, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
209602298271,18sleep10-21swapper/107:05:501
211072283257,17sleep20-21swapper/207:07:442
211772259228,20sleep00-21swapper/007:08:350
212122258226,22sleep30-21swapper/307:09:023
36492630,0sleep00-21swapper/009:24:240
289302630,0sleep20-21swapper/209:58:422
130472580,0sleep30-21swapper/310:27:463
253962570,0sleep10-21swapper/112:10:471
82942530,0sleep10-21swapper/111:22:301
10562180,0sleep00-21swapper/012:15:220
215982150,0sleep30-21swapper/311:10:423
261752140,0sleep30-21swapper/309:18:183
32062130,0chrt0-21swapper/310:21:363
243362130,0sleep20-21swapper/211:51:062
246442110,0sleep10-21swapper/109:17:081
22972290,0sleep10-21swapper/111:30:591
8173280,0sleep00-21swapper/009:45:390
7685280,0sleep20-21swapper/211:41:132
214089986,1cyclictest2417-21ssh09:23:283
214089980,8cyclictest15963-21ssh11:27:003
214059987,1cyclictest28-21ksoftirqd/211:25:012
214059986,1cyclictest31242-21diskmemload10:38:482
213999986,1cyclictest5214-21df_inode11:40:131
213999986,1cyclictest22-21ksoftirqd/111:10:011
213959987,1cyclictest12-21ksoftirqd/012:00:010
213959986,1cyclictest12-21ksoftirqd/012:40:000
213959982,4cyclictest26026-21turbostat10:55:000
2128280,1sleep00-21swapper/008:45:200
7356270,1sleep00-21swapper/012:00:170
214089974,2cyclictest504-21dbus-daemon12:05:003
214089973,3cyclictest30727-21snmpd08:12:203
214089973,3cyclictest275-21systemd-journal11:50:163
214089970,1cyclictest30072-21ssh09:40:113
214059973,3cyclictest7230-21grep12:00:152
214059973,3cyclictest30727-21snmpd08:20:202
214059971,5cyclictest13751-21unixbench_singl11:25:192
214059971,3cyclictest4332-21readlink11:40:012
214059970,3cyclictest23841-21rm10:15:122
213999976,1cyclictest22-21ksoftirqd/112:00:011
213999976,1cyclictest22-21ksoftirqd/111:00:011
213999976,1cyclictest22-21ksoftirqd/109:15:001
213999975,1cyclictest22-21ksoftirqd/110:55:001
213999973,3cyclictest30727-21snmpd10:06:541
213999973,3cyclictest30727-21snmpd09:58:091
213999973,3cyclictest275-21systemd-journal12:03:111
213999973,2cyclictest275-21systemd-journal10:44:461
213999973,2cyclictest275-21systemd-journal07:19:081
213999971,1cyclictest141rcu_preempt09:45:131
213999970,1cyclictest11641-21diskmemload11:28:401
213959974,2cyclictest275-21systemd-journal08:08:330
13495270,0sleep30-21swapper/311:05:543
12572270,0sleep00-21swapper/011:25:130
4736260,0sleep00-21swapper/007:40:170
214089964,1cyclictest0-21swapper/308:35:013
214089963,2cyclictest9675-21ssh12:20:293
214089963,2cyclictest8119-21cat09:00:153
214089963,2cyclictest8022-21sh11:41:283
214089963,2cyclictest6883-21ssh10:05:043
214089963,2cyclictest5369-21sh10:42:063
214089963,2cyclictest3205-21ssh12:16:573
214089963,2cyclictest31077-21ssh10:57:293
214089963,2cyclictest22980-21timerwakeupswit07:10:193
214089963,2cyclictest21564-21tr08:20:133
214089963,2cyclictest20166-21sshd10:50:343
214089962,3cyclictest5941-21cat07:45:133
214089962,3cyclictest5576-21fw_packets09:25:163
214089962,3cyclictest504-21dbus-daemon11:15:173
214089962,3cyclictest504-21dbus-daemon08:00:203
214089962,3cyclictest30928-21basename08:40:123
214089962,3cyclictest30727-21snmpd12:35:213
214089962,3cyclictest30727-21snmpd12:25:453
214089962,3cyclictest30727-21snmpd12:08:563
214089962,3cyclictest30727-21snmpd11:32:593
214089962,3cyclictest30727-21snmpd11:23:443
214089962,3cyclictest30727-21snmpd11:03:103
214089962,3cyclictest30727-21snmpd10:37:073
214089962,3cyclictest30727-21snmpd10:18:333
214089962,3cyclictest30727-21snmpd10:10:303
214089962,3cyclictest30727-21snmpd09:46:153
214089962,3cyclictest30727-21snmpd09:09:003
214089962,3cyclictest30727-21snmpd08:55:093
214089962,3cyclictest30727-21snmpd08:53:243
214089962,3cyclictest30727-21snmpd08:16:233
214089962,3cyclictest30727-21snmpd07:41:503
214089962,3cyclictest30727-21snmpd07:30:073
214089962,3cyclictest275-21systemd-journal11:56:063
214089962,3cyclictest26118-21gdbus08:30:003
214089962,3cyclictest24775-21tune2fs12:30:133
214089962,3cyclictest20149-21latency_hist09:15:003
214089962,3cyclictest17197-21cat10:30:153
214089962,3cyclictest15554-21awk09:50:183
214089961,4cyclictest0-21swapper/310:45:193
214089960,6cyclictest0-21swapper/309:35:443
214089960,6cyclictest0-21swapper/307:35:203
214089960,5cyclictest13998-21expr09:30:153
214089960,5cyclictest13880-21wc11:45:153
214089960,2cyclictest23754-21munin-node07:15:013
214059966,0cyclictest0-21swapper/210:41:482
214059966,0cyclictest0-21swapper/210:32:182
214059966,0cyclictest0-21swapper/209:11:562
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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