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2026-07-21 - 08:39
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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 Tue Jul 21, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
273352293262,21sleep10-21swapper/119:10:011
269692278247,21sleep00-21swapper/019:05:340
269612274244,19sleep20-21swapper/219:05:262
272012268236,22sleep30-21swapper/319:08:173
264802670,1sleep20-21swapper/221:15:132
268162600,0sleep00-21swapper/023:32:170
288602580,0sleep20-21swapper/223:33:522
50892570,0sleep30-21swapper/323:00:013
52232550,0sleep10-21swapper/123:00:041
228562190,0sleep10-21swapper/122:50:231
237352180,0sleep20-21swapper/222:31:252
85542160,0sleep00-21swapper/023:01:270
97382150,0sleep00-21swapper/023:21:440
96322150,0sleep30-21swapper/322:42:513
27427991211,1cyclictest12-21ksoftirqd/021:29:590
210192120,0sleep00-21swapper/023:29:090
112312120,0sleep10-21swapper/123:22:531
12682290,0sleep20-21swapper/200:03:232
274369986,1cyclictest16547-21/usr/sbin/munin21:05:182
274329986,1cyclictest22-21ksoftirqd/121:00:011
274329980,7cyclictest28453-21memory19:10:161
6381270,0sleep00-21swapper/021:41:260
3761270,0sleep00-21swapper/023:57:520
274409973,3cyclictest658-21snmpd23:01:193
274409973,3cyclictest275-21systemd-journal20:52:173
274409973,3cyclictest23696-21awk23:30:183
274409973,1cyclictest0-21swapper/322:02:143
274369974,2cyclictest28376-21sshd00:12:482
274369973,3cyclictest20280-21cpuspeed22:10:152
274369971,4cyclictest27431-21cat20:20:002
274369970,1cyclictest1790-21ssh00:15:572
274329976,1cyclictest22-21ksoftirqd/100:00:011
274329974,2cyclictest504-21dbus-daemon00:20:001
274329974,2cyclictest2983-21gdbus21:40:011
274329974,2cyclictest275-21systemd-journal21:01:151
274329973,3cyclictest658-21snmpd20:18:551
274329972,2cyclictest22-21ksoftirqd/100:40:001
274279976,1cyclictest17593-21diskmemload23:05:100
274279974,2cyclictest504-21dbus-daemon23:37:520
274279973,3cyclictest658-21snmpd20:29:240
274279973,1cyclictest0-21swapper/021:48:340
20766270,0sleep00-21swapper/022:50:020
17809270,0chrt0-21swapper/300:25:383
274409966,0cyclictest0-21swapper/323:55:593
274409966,0cyclictest0-21swapper/300:01:163
274409964,1cyclictest34-21ksoftirqd/319:15:023
274409964,1cyclictest14251-21ssh22:25:253
274409963,2cyclictest663-21runrttasks19:24:233
274409963,2cyclictest658-21snmpd22:21:253
274409963,2cyclictest658-21snmpd21:01:153
274409963,2cyclictest32346-21sh21:38:023
274409963,2cyclictest32054-21sort20:30:003
274409963,2cyclictest29461-11brltty20:43:413
274409963,2cyclictest275-21systemd-journal19:44:493
274409963,2cyclictest23568-21sshd21:13:163
274409963,2cyclictest23033-21ssh22:30:533
274409963,2cyclictest19430-21sh00:07:153
274409963,2cyclictest1521-21sh00:35:243
274409963,1cyclictest0-21swapper/323:54:173
274409963,1cyclictest0-21swapper/321:16:403
274409962,3cyclictest658-21snmpd23:36:563
274409962,3cyclictest658-21snmpd23:20:053
274409962,3cyclictest658-21snmpd23:15:553
274409962,3cyclictest658-21snmpd23:05:283
274409962,3cyclictest658-21snmpd22:39:273
274409962,3cyclictest658-21snmpd21:31:113
274409962,3cyclictest658-21snmpd21:21:313
274409962,3cyclictest658-21snmpd20:35:593
274409962,3cyclictest658-21snmpd20:33:263
274409962,3cyclictest658-21snmpd20:00:583
274409962,3cyclictest658-21snmpd19:54:283
274409962,3cyclictest658-21snmpd19:45:423
274409962,3cyclictest658-21snmpd19:35:483
274409962,3cyclictest658-21snmpd00:30:043
274409962,3cyclictest5139-21cat19:30:133
274409962,3cyclictest504-21dbus-daemon00:10:283
274409962,3cyclictest28216-21sed19:10:143
274409962,3cyclictest275-21systemd-journal23:47:023
274409962,3cyclictest275-21systemd-journal22:17:413
274409962,3cyclictest275-21systemd-journal21:50:043
274409962,3cyclictest275-21systemd-journal21:42:213
274409962,3cyclictest275-21systemd-journal20:20:423
274409962,3cyclictest275-21systemd-journal19:26:583
274409962,3cyclictest21654-21fw_packets22:50:143
274409962,2cyclictest674-21lldpd23:43:193
274409962,1cyclictest0-21swapper/323:14:163
274409962,1cyclictest0-21swapper/321:55:033
274409962,1cyclictest0-21swapper/321:46:543
274409962,1cyclictest0-21swapper/300:23:173
274409961,4cyclictest16200-21tail21:05:153
274409961,3cyclictest275-21systemd-journal22:10:113
274409961,2cyclictest11642-21fschecks_time20:55:143
274409960,6cyclictest0-21swapper/300:17:303
274409960,5cyclictest23822-21hddtemp_smartct20:10:153
274409960,5cyclictest16530-21awk19:55:113
274409960,5cyclictest13216-21expr22:45:133
274409960,5cyclictest12053-21cat22:05:123
274409960,0cyclictest0-21swapper/321:29:503
274369966,0cyclictest0-21swapper/219:55:182
274369966,0cyclictest0-21swapper/200:30:512
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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