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2026-04-03 - 02:21
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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 02, 2026 12:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
320602301274,17sleep20-21swapper/207:07:562
320292272245,18sleep30-21swapper/307:07:333
321622264232,22sleep00-21swapper/007:09:150
321432260234,17sleep10-21swapper/107:09:001
4102610,0sleep10-21swapper/110:40:001
23432600,0sleep20-21swapper/211:40:002
22152600,0sleep10-21swapper/109:22:281
216942600,0sleep10-21swapper/110:32:481
310942580,0sleep20-21swapper/209:40:112
86082220,0sleep00-21swapper/012:22:180
59002200,1sleep3331rcuc/311:21:563
174632200,0sleep30-21swapper/309:11:563
210542190,0sleep10-21swapper/111:30:491
127992160,0sleep00-21swapper/012:05:170
73412150,0sleep20-21swapper/211:23:032
261252140,0sleep20-21swapper/209:36:432
178112120,0sleep10-21swapper/111:10:081
14802110,0sleep10-21swapper/107:15:071
83062100,0sleep20-21swapper/212:22:052
323549995,1cyclictest18750irq/134-ahci[0011:50:001
3580280,0sleep00-21swapper/009:23:310
323619982,3cyclictest4110-21ls07:25:002
323549980,2cyclictest649-21ssh10:40:031
323509984,3cyclictest275-21systemd-journal10:02:540
26347280,1sleep30-21swapper/312:33:073
20413280,0sleep30-21swapper/310:12:273
18453280,0sleep30-21swapper/309:51:383
323669973,3cyclictest275-21systemd-journal09:58:143
323669973,3cyclictest20307-21cat11:50:143
323669973,1cyclictest0-21swapper/311:19:193
323669972,3cyclictest275-21systemd-journal09:00:113
323669972,3cyclictest275-21systemd-journal07:30:073
323669970,6cyclictest1672-21taskset08:41:013
323669970,6cyclictest1672-21taskset08:41:013
323619976,1cyclictest0-21swapper/210:58:432
323619973,3cyclictest355-21tr10:40:012
323619973,3cyclictest275-21systemd-journal08:32:002
323619971,3cyclictest18198-21munin-run11:30:002
323549973,3cyclictest275-21systemd-journal10:00:491
323549973,3cyclictest275-21systemd-journal07:25:501
323549972,3cyclictest275-21systemd-journal09:20:001
323549972,2cyclictest31882-21idleruntime-cro08:40:011
323549970,4cyclictest25159-21dump-pmu-power10:55:011
323509976,1cyclictest12-21ksoftirqd/009:34:590
323509975,1cyclictest12-21ksoftirqd/010:00:010
323509974,2cyclictest15732-21sshd09:10:380
323509973,3cyclictest504-21dbus-daemon11:15:000
323509973,3cyclictest504-21dbus-daemon08:10:180
323509973,3cyclictest275-21systemd-journal09:05:340
323509972,4cyclictest658-21snmpd10:15:490
323509970,7cyclictest0-21swapper/009:36:060
27769270,0sleep00-21swapper/011:55:080
22018270,0sleep20-21swapper/211:12:102
19877270,0sleep00-21swapper/011:50:110
12966270,0sleep10-21swapper/110:08:181
323669966,0cyclictest0-21swapper/310:31:423
323669963,2cyclictest663-21runrttasks10:50:103
323669963,2cyclictest658-21snmpd09:39:353
323669963,2cyclictest5454-21sshd11:40:503
323669963,2cyclictest32059-21sh12:36:093
323669963,2cyclictest3115-21sh09:42:343
323669963,2cyclictest30849-21ntpq08:35:163
323669963,2cyclictest275-21systemd-journal10:45:453
323669963,2cyclictest275-21systemd-journal10:16:153
323669963,2cyclictest275-21systemd-journal09:47:023
323669963,2cyclictest22303-21ssh11:12:233
323669963,2cyclictest16213-21ssh11:09:033
323669963,2cyclictest10694-21ssh10:25:413
323669963,2cyclictest1034-21sh11:58:183
323669963,1cyclictest0-21swapper/311:48:013
323669962,3cyclictest658-21snmpd12:26:313
323669962,3cyclictest658-21snmpd12:24:403
323669962,3cyclictest658-21snmpd12:11:463
323669962,3cyclictest658-21snmpd12:07:553
323669962,3cyclictest658-21snmpd11:31:033
323669962,3cyclictest658-21snmpd11:04:413
323669962,3cyclictest658-21snmpd10:35:343
323669962,3cyclictest658-21snmpd10:20:253
323669962,3cyclictest658-21snmpd08:46:093
323669962,3cyclictest658-21snmpd08:30:453
323669962,3cyclictest658-21snmpd08:03:293
323669962,3cyclictest658-21snmpd07:50:083
323669962,3cyclictest658-21snmpd07:45:533
323669962,3cyclictest658-21snmpd07:43:023
323669962,3cyclictest31813-21cat10:00:123
323669962,3cyclictest27851-11brltty12:16:073
323669962,3cyclictest27795-21ls11:35:163
323669962,3cyclictest275-21systemd-journal10:05:313
323669962,3cyclictest2111-21cat07:15:113
323669962,3cyclictest18866-21diskstats08:10:143
323669962,3cyclictest1-21systemd09:25:183
323669962,3cyclictest0-21swapper/307:10:053
323669962,2cyclictest16948-21ssh09:31:003
323669961,4cyclictest34-21ksoftirqd/307:24:583
323669961,4cyclictest11228-21cat11:25:163
323669960,0cyclictest0-21swapper/312:01:533
323669960,0cyclictest0-21swapper/309:17:563
323619966,0cyclictest0-21swapper/212:12:492
323619966,0cyclictest0-21swapper/211:05:062
323619966,0cyclictest0-21swapper/210:43:492
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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