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2026-04-23 - 10:28
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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 Apr 23, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
308512304274,20sleep20-21swapper/219:08:442
289892285255,20sleep10-21swapper/119:05:061
307282275243,22sleep00-21swapper/019:07:100
308672274241,22sleep30-21swapper/319:08:583
281382610,0sleep20-21swapper/221:14:202
306502600,0sleep00-21swapper/020:20:010
281922600,0sleep10-21swapper/121:52:281
294092580,0sleep10-21swapper/123:30:181
5502560,0sleep20-21swapper/223:32:352
8632550,0sleep30-21swapper/321:35:463
95142530,0sleep20-21swapper/200:35:502
152782530,0sleep10-21swapper/100:20:151
228992180,0sleep00-21swapper/023:45:340
273372170,1sleep20-21swapper/220:10:182
112192150,0sleep30-21swapper/321:23:223
27872140,0sleep30-21swapper/319:15:183
47772110,0sleep10-21swapper/122:17:141
9046290,0sleep10-21swapper/123:56:531
310909997,1cyclictest28-21ksoftirqd/220:00:012
310949980,2cyclictest12427-21ssh23:00:263
310879984,3cyclictest28041-21sh21:14:151
310879980,4cyclictest29575-21ssh21:15:121
310839984,2cyclictest275-21systemd-journal22:12:080
30667280,0sleep20-21swapper/221:54:212
13935280,0sleep00-21swapper/022:22:500
13441280,0sleep20-21swapper/222:41:462
12054280,0sleep00-21swapper/000:37:470
32304270,0sleep10-21swapper/122:34:081
310949973,3cyclictest3104-21awk23:15:113
310949973,3cyclictest275-21systemd-journal23:53:153
310949973,3cyclictest275-21systemd-journal00:15:213
310949973,3cyclictest0-21swapper/322:43:353
310949973,1cyclictest0-21swapper/322:20:013
310949972,3cyclictest275-21systemd-journal20:04:593
310909974,2cyclictest1583-21irqstats20:25:142
310909973,3cyclictest658-21snmpd00:13:432
310909973,3cyclictest304-21systemd-udevd22:25:562
310909973,3cyclictest275-21systemd-journal23:52:002
310909973,3cyclictest12883-21needreboot20:50:152
310909973,2cyclictest275-21systemd-journal22:24:382
310909973,1cyclictest0-21swapper/221:31:232
310909970,7cyclictest0-21swapper/223:29:142
310909970,4cyclictest15869-21grep22:05:012
310909970,2cyclictest6760-21/usr/sbin/munin19:25:132
310879972,3cyclictest275-21systemd-journal22:36:491
310879971,5cyclictest19593-21grep21:05:151
310879971,3cyclictest6002-21munin-run19:25:001
310839974,2cyclictest504-21dbus-daemon19:55:450
310839974,2cyclictest15656-21df_inode21:45:130
310839973,3cyclictest275-21systemd-journal21:05:100
310839973,3cyclictest275-21systemd-journal20:38:150
310839973,3cyclictest275-21systemd-journal20:30:010
310839973,2cyclictest275-21systemd-journal00:28:530
310949966,0cyclictest0-21swapper/323:35:183
310949966,0cyclictest0-21swapper/323:10:463
310949966,0cyclictest0-21swapper/322:55:163
310949966,0cyclictest0-21swapper/321:18:113
310949963,2cyclictest658-21snmpd23:42:073
310949963,2cyclictest658-21snmpd23:29:033
310949963,2cyclictest658-21snmpd21:00:143
310949963,2cyclictest658-21snmpd20:30:093
310949963,2cyclictest504-21dbus-daemon21:50:273
310949963,2cyclictest34-21ksoftirqd/300:30:023
310949963,2cyclictest275-21systemd-journal19:59:323
310949963,2cyclictest27415-21sshd22:30:233
310949963,2cyclictest27161-21ssh21:32:313
310949963,2cyclictest26083-21awk20:10:013
310949963,2cyclictest23271-21taskset22:47:573
310949963,2cyclictest23271-21taskset22:47:573
310949963,2cyclictest21263-21entropy23:45:133
310949963,2cyclictest20436-21timerwakeupswit23:05:203
310949963,2cyclictest18597-21sh21:46:333
310949963,2cyclictest17533-21expr22:25:143
310949963,2cyclictest14327-21cpuspeed_turbos20:55:133
310949963,2cyclictest12976-21ssh00:38:313
310949963,2cyclictest12432-11brltty21:56:423
310949963,2cyclictest0-21swapper/322:20:033
310949963,1cyclictest0-21swapper/323:30:203
310949963,1cyclictest0-21swapper/300:12:073
310949963,1cyclictest0-21swapper/300:02:273
310949962,3cyclictest658-21snmpd23:23:133
310949962,3cyclictest658-21snmpd22:10:053
310949962,3cyclictest658-21snmpd21:42:563
310949962,3cyclictest658-21snmpd20:50:023
310949962,3cyclictest658-21snmpd20:48:143
310949962,3cyclictest658-21snmpd20:26:043
310949962,3cyclictest658-21snmpd20:15:223
310949962,3cyclictest658-21snmpd19:50:393
310949962,3cyclictest658-21snmpd19:38:143
310949962,3cyclictest658-21snmpd19:34:393
310949962,3cyclictest658-21snmpd19:20:263
310949962,3cyclictest658-21snmpd19:11:533
310949962,3cyclictest504-21dbus-daemon22:40:003
310949962,3cyclictest27009-21irqstats20:10:153
310949962,3cyclictest26674-21cat22:50:133
310949962,3cyclictest23860-21awk00:25:173
310949962,3cyclictest0-21swapper/322:08:453
310949962,3cyclictest0-21swapper/321:05:103
310949961,4cyclictest0-21swapper/300:05:123
310949960,5cyclictest18491-21rm00:22:073
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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