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2026-08-13 - 22:28
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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 Thu Aug 13, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
241582277248,17sleep10-21swapper/107:08:041
240172267240,17sleep20-21swapper/207:06:162
240732259230,18sleep00-21swapper/007:06:570
241952257223,23sleep30-21swapper/307:08:343
64072670,0sleep20-21swapper/208:50:142
250892670,0sleep10-21swapper/109:15:281
6322600,0sleep10-21swapper/110:38:361
273102590,0sleep20-21swapper/211:33:322
270082580,0sleep30-21swapper/312:11:533
15632580,1sleep012-21ksoftirqd/012:35:200
138752570,0sleep20-21swapper/211:05:252
108472570,0sleep00-21swapper/011:42:550
300152540,0sleep20-21swapper/211:35:112
249922510,0sleep00-21swapper/011:51:000
123292180,0sleep20-21swapper/211:24:512
47482170,0sleep30-21swapper/310:21:173
33952140,1sleep20-21swapper/210:20:202
264742140,0sleep00-21swapper/011:32:540
256302130,0sleep225607-21ssh09:55:132
160452110,0sleep30-21swapper/310:47:403
137302100,1sleep00-21swapper/010:45:530
11372100,0sleep00-21swapper/010:58:260
244159998,1cyclictest320581ssh12:35:001
244079990,6cyclictest13027-21ls07:55:010
244239981,3cyclictest149522sh09:49:013
244159987,1cyclictest22-21ksoftirqd/110:10:011
244159987,1cyclictest22-21ksoftirqd/107:15:011
244159986,2cyclictest22-21ksoftirqd/112:20:001
244159985,2cyclictest22-21ksoftirqd/110:35:011
244079980,7cyclictest4495-21ssh10:21:040
17429280,0sleep20-21swapper/212:05:552
15671280,0sleep00-21swapper/009:30:030
244239975,1cyclictest31695-21latency_hist07:25:013
244239974,2cyclictest658-21snmpd12:22:373
244239974,2cyclictest491-21systemd-logind10:03:033
244239973,3cyclictest7874-21apt-get08:55:113
244239973,3cyclictest560-21gdbus08:40:003
244239973,3cyclictest4046-21ntpq10:40:183
244239973,3cyclictest275-21systemd-journal11:53:353
244239973,3cyclictest275-21systemd-journal10:30:343
244239973,1cyclictest0-21swapper/312:37:373
244239972,4cyclictest658-21snmpd09:52:483
244239972,1cyclictest0-21swapper/311:40:123
244209973,3cyclictest275-21systemd-journal10:55:012
244209973,3cyclictest275-21systemd-journal08:15:102
244209973,3cyclictest275-21systemd-journal07:17:172
244159976,1cyclictest22-21ksoftirqd/109:35:001
244159973,3cyclictest658-21snmpd08:49:331
244159973,3cyclictest658-21snmpd07:58:531
244159973,3cyclictest504-21dbus-daemon12:15:001
244159973,3cyclictest1123-11brltty11:02:451
244159970,6cyclictest27351-21cron10:55:011
244079976,1cyclictest12-21ksoftirqd/011:40:010
244079974,2cyclictest14582-21sshd07:55:180
15240270,0sleep10-21swapper/111:25:411
13614270,0sleep20-21swapper/212:23:332
8078260,0sleep00-21swapper/012:00:210
30706260,0sleep10-21swapper/109:39:021
26461260,0sleep20-21swapper/212:11:292
2471260,0sleep20-21swapper/211:57:142
244239966,0cyclictest0-21swapper/312:01:353
244239966,0cyclictest0-21swapper/310:52:543
244239963,2cyclictest9044-21ssh11:22:183
244239963,2cyclictest663-21runrttasks11:46:563
244239963,2cyclictest504-21dbus-daemon11:38:113
244239963,2cyclictest31521-21/usr/sbin/munin12:15:143
244239963,2cyclictest275-21systemd-journal10:55:463
244239963,2cyclictest275-21systemd-journal08:11:333
244239963,2cyclictest275-21systemd-journal08:04:433
244239963,2cyclictest25490-21sh11:32:083
244239963,2cyclictest1779-21dpkg07:30:133
244239963,2cyclictest17709-21sh09:30:263
244239963,2cyclictest14528-21rm09:10:003
244239963,1cyclictest0-21swapper/312:30:093
244239963,1cyclictest0-21swapper/311:12:303
244239962,3cyclictest658-21snmpd11:26:053
244239962,3cyclictest658-21snmpd11:01:473
244239962,3cyclictest658-21snmpd10:15:043
244239962,3cyclictest658-21snmpd10:10:433
244239962,3cyclictest658-21snmpd10:05:533
244239962,3cyclictest658-21snmpd09:40:473
244239962,3cyclictest658-21snmpd09:23:563
244239962,3cyclictest658-21snmpd09:17:083
244239962,3cyclictest658-21snmpd09:01:403
244239962,3cyclictest658-21snmpd08:52:073
244239962,3cyclictest658-21snmpd07:56:453
244239962,3cyclictest658-21snmpd07:37:083
244239962,3cyclictest658-21snmpd07:10:383
244239962,3cyclictest590-21cut10:00:013
244239962,3cyclictest31119-21awk11:55:133
244239962,3cyclictest28292-21tr10:35:183
244239962,3cyclictest27845-21expr07:15:133
244239962,3cyclictest24694-21fw_packets09:35:143
244239962,3cyclictest16725-21cat12:25:153
244239962,1cyclictest0-21swapper/311:16:093
244239960,6cyclictest0-21swapper/311:07:423
244239960,6cyclictest0-21swapper/308:45:313
244239960,5cyclictest454-21ntp_states07:25:163
244209963,2cyclictest9837-21expr07:45:192
244209963,2cyclictest9492-21sshd08:55:492
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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