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2026-04-06 - 16:29
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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 Mon Apr 06, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
267352284257,17sleep20-21swapper/207:09:582
245252277214,21sleep00-21swapper/007:05:000
267262275216,48sleep30-21swapper/307:09:553
265172272246,17sleep10-21swapper/107:07:201
83412710,0sleep10-21swapper/112:20:201
40512670,0sleep20-21swapper/211:39:092
258282620,0sleep30-21swapper/312:31:033
288482590,0sleep20-21swapper/209:35:472
157912590,0sleep10-21swapper/111:45:281
29852580,0sleep10-21swapper/110:19:561
100992570,0sleep30-21swapper/311:42:263
116932550,0sleep10-21swapper/109:25:211
319082520,0sleep00-21swapper/010:36:440
253132350,0sleep20-21swapper/210:33:022
19512200,0sleep334-21ksoftirqd/309:40:003
116232190,0sleep30-21swapper/310:44:523
78662170,0sleep30-21swapper/310:22:183
49762170,0sleep00-21swapper/009:40:580
215322160,0sleep20-21swapper/211:10:142
148312150,0sleep30-21swapper/309:05:133
153532140,0sleep00-21swapper/011:25:290
8762120,0sleep00-21swapper/011:36:380
107542120,0sleep00-21swapper/009:25:150
321432100,0sleep30-21swapper/312:35:153
2683999108,2cyclictest34-21ksoftirqd/308:30:003
2683499109,1cyclictest28-21ksoftirqd/210:15:012
121942100,0sleep10-21swapper/111:44:041
268349998,1cyclictest28-21ksoftirqd/211:20:012
268269993,4cyclictest12-21ksoftirqd/010:55:160
18651290,0sleep10-21swapper/110:29:171
268399986,1cyclictest34-21ksoftirqd/308:00:003
268399985,2cyclictest34-21ksoftirqd/308:50:003
268349986,1cyclictest28358-21fw_packets10:15:152
268349984,3cyclictest275-21systemd-journal08:51:442
268349983,3cyclictest22109-21munin-run08:10:002
268349981,2cyclictest6361-21ssh12:00:122
268349980,2cyclictest23374-21ssh10:51:132
268309984,3cyclictest275-21systemd-journal11:15:011
268309980,2cyclictest275-21systemd-journal10:55:011
268269987,1cyclictest12-21ksoftirqd/010:50:010
268269983,1cyclictest12-21ksoftirqd/012:30:340
268269980,7cyclictest20530-21df08:05:130
268399974,2cyclictest275-21systemd-journal11:32:103
268399974,2cyclictest275-21systemd-journal09:31:583
268399974,2cyclictest22677-21cron12:30:003
268399973,2cyclictest6109-21ssh09:22:243
268399973,1cyclictest0-21swapper/311:17:463
268349976,1cyclictest28-21ksoftirqd/210:25:012
268349974,2cyclictest29850-21perf11:55:012
268349974,2cyclictest2731-21ntp_states09:20:162
268349972,3cyclictest3653-21munin-run10:40:012
268349971,1cyclictest141rcu_preempt12:35:122
268349970,5cyclictest141rcu_preempt09:10:122
268349970,1cyclictest658-21snmpd09:43:222
268349970,1cyclictest5469-21ssh11:40:032
268309973,3cyclictest658-21snmpd11:01:061
268309973,3cyclictest504-21dbus-daemon09:40:301
268269976,1cyclictest12-21ksoftirqd/007:35:010
268269972,3cyclictest658-21snmpd09:57:590
268269972,3cyclictest275-21systemd-journal12:15:000
268269970,3cyclictest141rcu_preempt09:50:180
17493270,0sleep20-21swapper/212:25:582
11740270,0sleep00-21swapper/010:44:570
5039260,0sleep10-21swapper/110:00:301
268399963,2cyclictest6130-21cron07:35:013
268399963,2cyclictest32628-21sshd11:55:483
268399963,2cyclictest30477-21expr07:15:143
268399963,2cyclictest26525-21sh10:33:593
268399963,2cyclictest25509-21sh11:51:383
268399963,2cyclictest25453-21head08:15:143
268399963,2cyclictest21658-21grep11:10:153
268399963,2cyclictest20115-21expr10:10:143
268399963,2cyclictest19596-21sh09:10:473
268399963,2cyclictest16351-21ssh12:05:233
268399963,2cyclictest13671-21sh10:25:253
268399963,1cyclictest0-21swapper/312:19:023
268399962,3cyclictest658-21snmpd12:21:563
268399962,3cyclictest658-21snmpd11:45:313
268399962,3cyclictest658-21snmpd09:45:083
268399962,3cyclictest658-21snmpd08:05:463
268399962,3cyclictest4307-21cat08:40:153
268399962,3cyclictest3086-21cat09:40:123
268399962,3cyclictest28205-21sendmail_mailst07:10:183
268399962,3cyclictest27877-21tail09:55:153
268399962,3cyclictest275-21systemd-journal11:04:283
268399962,3cyclictest13218-21cat10:45:193
268399962,2cyclictest658-21snmpd09:16:243
268399962,2cyclictest275-21systemd-journal07:25:063
268399962,1cyclictest0-21swapper/311:20:413
268399962,1cyclictest0-21swapper/310:05:023
268399962,1cyclictest0-21swapper/309:25:023
268399961,4cyclictest24166-21cat12:10:193
268399961,3cyclictest275-21systemd-journal10:00:073
268399960,6cyclictest0-21swapper/311:35:473
268399960,6cyclictest0-21swapper/309:53:043
268399960,2cyclictest275-21systemd-journal11:07:493
268349963,2cyclictest6899-21sh11:00:362
268349963,2cyclictest5487-21smart_sda10:40:192
268349963,2cyclictest5147-21ssh11:20:112
268349963,2cyclictest4282-21awk10:00:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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