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2026-07-22 - 20:44
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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 Wed Jul 22, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
83352310281,19sleep20-21swapper/207:05:062
99442273243,20sleep10-21swapper/107:05:331
100312264234,20sleep00-21swapper/007:06:400
100802259226,22sleep30-21swapper/307:07:203
131092890,0sleep30-21swapper/309:35:583
64722600,0sleep00-21swapper/012:25:180
297612600,0sleep20-21swapper/210:44:252
242612590,0sleep20-21swapper/209:43:072
224332580,0sleep20-21swapper/212:35:142
89312560,0sleep30-21swapper/311:48:543
310392560,0sleep30-21swapper/311:42:293
283632530,0sleep20-21swapper/207:45:192
77522450,0sleep10-21swapper/110:30:311
24782210,0sleep20-21swapper/212:04:302
41152180,0sleep20-21swapper/210:29:092
128692180,1sleep00-21swapper/009:35:470
70642140,0sleep00-21swapper/010:30:180
326792140,0sleep30-21swapper/312:02:503
295042140,0sleep10-21swapper/111:03:231
132482140,0sleep30-21swapper/308:25:163
37502130,0sleep30-21swapper/309:30:263
181122130,0sleep00-21swapper/011:54:320
310752100,0chrt0-21swapper/311:23:383
1042299108,1cyclictest12598-21munin-run07:15:002
12547290,0sleep00-21swapper/008:25:000
9164280,0sleep10-21swapper/110:50:411
25419280,0sleep20-21swapper/207:40:142
13946280,0sleep20-21swapper/209:36:382
104259983,3cyclictest275-21systemd-journal07:32:243
104229980,5cyclictest28394-21idleruntime-cro12:20:002
104179983,3cyclictest275-21systemd-journal11:18:251
104139987,1cyclictest12-21ksoftirqd/012:10:010
104139987,1cyclictest12-21ksoftirqd/011:20:000
104139983,3cyclictest275-21systemd-journal08:30:000
8355270,0sleep20-21swapper/211:48:282
29188270,0sleep00-21swapper/010:24:570
15361270,0sleep10-21swapper/110:15:541
104259976,1cyclictest34-21ksoftirqd/310:35:023
104259976,1cyclictest0-21swapper/311:09:263
104259975,2cyclictest34-21ksoftirqd/309:10:003
104259974,2cyclictest34-21ksoftirqd/307:50:003
104259974,2cyclictest275-21systemd-journal11:13:263
104259973,3cyclictest19973-21wc07:30:013
104259973,3cyclictest0-21swapper/309:50:333
104259973,2cyclictest674-21lldpd09:22:273
104259973,2cyclictest275-21systemd-journal08:44:553
104259973,2cyclictest275-21systemd-journal08:44:553
104259972,3cyclictest275-21systemd-journal08:22:133
104229974,2cyclictest25595-21sshd11:00:242
104229973,3cyclictest275-21systemd-journal08:39:252
104229971,3cyclictest23503-21ls08:50:002
104179974,2cyclictest24545-21memory08:50:141
104179974,2cyclictest15856-21unixbench_multi10:35:201
104179973,3cyclictest658-21snmpd10:28:071
104179973,3cyclictest504-21dbus-daemon07:25:001
104139974,2cyclictest658-21snmpd11:57:510
104139973,3cyclictest275-21systemd-journal12:15:000
104139973,3cyclictest275-21systemd-journal10:05:020
104139973,3cyclictest26772-21sshd07:42:410
104139973,3cyclictest16750-21cron09:20:000
104139972,3cyclictest275-21systemd-journal11:13:270
104139970,1cyclictest20129-21sh10:19:300
104139970,1cyclictest141rcu_preempt07:15:130
104259966,0cyclictest0-21swapper/309:25:443
104259964,2cyclictest34-21ksoftirqd/308:55:003
104259964,1cyclictest14353-21grep10:35:133
104259963,2cyclictest9099-21cut09:15:143
104259963,2cyclictest504-21dbus-daemon09:56:533
104259963,2cyclictest504-21dbus-daemon08:05:063
104259963,2cyclictest32690-21cut07:55:213
104259963,2cyclictest31060-21sh10:05:593
104259963,2cyclictest29687-21tune2fs12:20:133
104259963,2cyclictest22075-21cat12:35:123
104259963,2cyclictest2059-21ssh10:27:353
104259963,2cyclictest12266-21ssh11:50:203
104259962,3cyclictest9709-21uptime08:15:213
104259962,3cyclictest954-21acpi11:25:133
104259962,3cyclictest658-21snmpd12:16:003
104259962,3cyclictest658-21snmpd12:13:443
104259962,3cyclictest658-21snmpd11:38:123
104259962,3cyclictest658-21snmpd11:31:293
104259962,3cyclictest658-21snmpd10:52:193
104259962,3cyclictest658-21snmpd10:44:133
104259962,3cyclictest658-21snmpd08:45:123
104259962,3cyclictest658-21snmpd08:00:353
104259962,3cyclictest658-21snmpd07:37:083
104259962,3cyclictest658-21snmpd07:22:463
104259962,3cyclictest504-21dbus-daemon10:00:213
104259962,3cyclictest17449-21expr08:35:133
104259962,3cyclictest11298-21cat07:10:143
104259962,3cyclictest0-21swapper/310:47:043
104259962,3cyclictest0-21swapper/310:15:383
104259962,1cyclictest0-21swapper/312:30:503
104259962,1cyclictest0-21swapper/312:26:083
104259962,1cyclictest0-21swapper/311:56:083
104259962,1cyclictest0-21swapper/310:55:153
104259962,1cyclictest0-21swapper/310:10:453
104259962,1cyclictest0-21swapper/309:42:433
104259960,6cyclictest0-21swapper/311:02:053
104259960,0cyclictest0-21swapper/311:15:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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