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2026-08-03 - 13:15
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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
Characteristics of the 100 highest latencies:
System rack1slot1.osadl.org (updated Mon Aug 03, 2026 00:45:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
262832211172,25sleep30-21swapper/319:08:263
263832203166,24sleep10-21swapper/119:09:461
260812200160,26sleep20-21swapper/219:05:492
242922200163,24sleep00-21swapper/019:05:060
139062800,0sleep10-21swapper/100:04:301
95832710,0sleep00-21swapper/021:40:140
54172640,1sleep35419-21timerwakeupswit23:50:223
123152170,1sleep312319-21fschecks_time19:45:153
2650199140,13cyclictest0-21swapper/222:30:192
2648499132,5cyclictest19133-21latency_hist21:09:590
26501991210,1cyclictest23029-21/usr/sbin/munin22:00:182
2650199120,11cyclictest0-21swapper/220:30:212
2648499119,1cyclictest9-21ksoftirqd/020:45:000
2648499111,5cyclictest20928-21perf20:04:590
2650199100,9cyclictest590-21apt-get23:00:112
2650199100,5cyclictest0-21swapper/220:35:122
5850290,0sleep10-21swapper/100:38:391
28031290,0sleep20-21swapper/222:51:142
265129992,6cyclictest13650irq/124-ahci[0021:30:013
265019998,1cyclictest28-21ksoftirqd/200:40:012
265019992,6cyclictest26475-21cyclictest21:49:232
264849993,1cyclictest30689-21ntp_states22:55:200
265129986,1cyclictest11301-21snmpd23:29:123
265129986,1cyclictest11301-21snmpd21:16:243
265129986,1cyclictest11301-21snmpd19:23:183
265129986,1cyclictest11301-21snmpd00:20:503
265129986,1cyclictest11301-21snmpd00:03:273
265129981,7cyclictest7356-21kworker/u8:100:34:513
265129981,7cyclictest28844-1kworker/u9:223:16:573
265019986,1cyclictest61650irq/122-eno122:06:132
265019986,1cyclictest61650irq/122-eno120:45:162
265019986,1cyclictest61650irq/122-eno100:35:002
265019986,1cyclictest1747-21ntpd22:45:582
265019986,1cyclictest11301-21snmpd21:12:452
265019981,6cyclictest0-21swapper/222:37:022
265019980,7cyclictest0-21swapper/200:01:562
265019980,2cyclictest0-21swapper/200:20:002
264849987,1cyclictest9-21ksoftirqd/021:16:350
264849987,1cyclictest16721-21ssh23:21:070
264849986,1cyclictest11301-21snmpd21:26:420
264849984,2cyclictest240-21systemd-journal20:40:000
264849983,4cyclictest0-21swapper/021:00:120
264849983,1cyclictest28770-21/usr/sbin/munin23:40:170
264849981,6cyclictest24021-21ssh22:45:210
264849980,7cyclictest22260-21ssh21:14:090
264849980,7cyclictest20533-21users22:40:210
265129976,1cyclictest35-21ksoftirqd/321:10:003
265129976,1cyclictest35-21ksoftirqd/321:00:003
265129976,1cyclictest35-21ksoftirqd/300:38:533
265129976,1cyclictest22631-21cat23:30:153
265129976,1cyclictest22563-21ntpq00:15:203
265129976,1cyclictest11301-21snmpd23:46:043
265129976,1cyclictest0-21swapper/320:05:553
265129975,1cyclictest20725-21ssh22:40:563
265129975,1cyclictest1660-21ssh21:30:133
265129975,1cyclictest11301-21snmpd23:07:543
265129974,2cyclictest571-21nscd00:11:443
265129974,1cyclictest240-21systemd-journal22:25:003
265129972,2cyclictest0-21swapper/322:45:113
265129970,4cyclictest14425-21aten2.4-expect00:05:143
265129970,3cyclictest23194-21aten2.4-expect22:00:133
265129970,2cyclictest0-21swapper/322:34:213
265129970,2cyclictest0-21swapper/320:00:223
265129970,1cyclictest1148-21/usr/sbin/munin22:15:123
265019976,1cyclictest61650irq/122-eno123:55:112
265019976,1cyclictest61650irq/122-eno123:52:362
265019976,1cyclictest61650irq/122-eno123:45:292
265019976,1cyclictest61650irq/122-eno123:10:022
265019976,1cyclictest61650irq/122-eno122:18:132
265019976,1cyclictest61650irq/122-eno122:10:202
265019976,1cyclictest61650irq/122-eno121:35:192
265019976,1cyclictest61650irq/122-eno121:30:142
265019976,0cyclictest61650irq/122-eno123:40:102
265019976,0cyclictest61650irq/122-eno123:35:112
265019976,0cyclictest61650irq/122-eno123:35:112
265019976,0cyclictest61650irq/122-eno123:20:132
265019976,0cyclictest61650irq/122-eno121:50:122
265019976,0cyclictest61650irq/122-eno121:20:132
265019975,1cyclictest11301-21snmpd19:29:302
265019975,1cyclictest11301-21snmpd00:26:352
265019974,2cyclictest583-21in:imuxsock21:00:002
265019973,3cyclictest9078-21cpuspeed_turbos21:40:122
265019972,2cyclictest26475-21cyclictest00:08:372
265019971,4cyclictest0-21swapper/223:05:202
265019970,6cyclictest25735-21latency_hist20:15:002
265019970,6cyclictest19138-21diskmemload23:15:162
265019970,4cyclictest0-21swapper/222:28:402
264899972,3cyclictest0-21swapper/123:40:111
264899970,1cyclictest0-21swapper/122:04:161
264899970,1cyclictest0-21swapper/120:04:581
264849976,1cyclictest4150-21ssh22:19:130
264849976,1cyclictest3625-1kworker/u9:222:26:320
264849976,1cyclictest19381-21ntpq23:25:180
264849976,1cyclictest11301-21snmpd22:54:330
264849976,1cyclictest11301-21snmpd00:39:400
264849975,1cyclictest7346-21latency_hist23:09:590
264849975,1cyclictest4320-21diskstats23:50:150
264849975,1cyclictest11301-21snmpd23:33:010
264849975,1cyclictest11301-21snmpd20:33:110
264849975,1cyclictest11301-21snmpd19:38:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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