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2026-09-14 - 04:04
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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
Characteristics of the 100 highest latencies:
System rackdslot0.osadl.org (updated Mon Sep 14, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11166993130,0cyclictest0-21swapper/100:18:291
11166992522,2cyclictest0-21swapper/121:58:071
11167992323,0cyclictest0-21swapper/221:25:142
11167992114,2cyclictest10221-21kernelversion22:55:172
11167992113,6cyclictest0-21swapper/200:40:002
1116799210,6cyclictest399-20systemd-journal00:07:442
11165992118,2cyclictest0-21swapper/022:30:180
1116799203,16cyclictest9443-21smtpd21:57:352
11167992017,2cyclictest28675-21sshd22:31:252
11166992014,5cyclictest0-21swapper/100:00:221
1116599203,11cyclictest0-21swapper/021:35:560
1116799193,15cyclictest31311-21expr21:40:132
1116799193,15cyclictest0-21swapper/220:53:052
1116799192,16cyclictest0-21swapper/223:10:582
11167991919,0cyclictest0-21swapper/220:20:152
11167991914,4cyclictest569-21latency_hist00:35:002
11167991914,3cyclictest4224-21cron19:55:012
1116699198,3cyclictest0-21swapper/121:13:471
1116699192,16cyclictest14505-21snapd22:05:541
11166991917,1cyclictest17717-21basename19:20:161
1116699191,1cyclictest0-21swapper/120:44:531
1116599192,16cyclictest0-21swapper/022:04:250
1116599192,16cyclictest0-21swapper/020:21:320
11165991917,1cyclictest0-21swapper/019:20:160
11165991916,2cyclictest993-21dbus-daemon22:55:010
1116599191,3cyclictest399-20systemd-journal20:45:000
1116599191,17cyclictest23134-21turbostat.cron23:20:010
1116599190,2cyclictest3989-21H222:10:210
1116599190,2cyclictest3981-21H222:10:210
1116599190,1cyclictest0-21swapper/020:30:200
1116599190,18cyclictest0-21swapper/022:55:190
1116799182,15cyclictest0-21swapper/221:35:172
11167991816,2cyclictest0-21swapper/222:05:202
11167991816,1cyclictest20883-21grep23:15:122
11167991816,1cyclictest12479-21expr23:00:152
11167991816,1cyclictest0-21swapper/220:01:162
11167991815,2cyclictest8903-21sed22:55:012
11167991815,2cyclictest15766-21chrt00:03:082
11167991814,2cyclictest3987-21H222:10:212
1116799181,16cyclictest7173-21timerandwakeup23:45:212
1116799181,16cyclictest25375-21cat23:20:212
1116799180,17cyclictest6534-21cat20:55:142
1116799180,17cyclictest16875-21needreboot22:10:162
1116799180,15cyclictest0-21swapper/221:15:232
1116699189,0cyclictest0-21swapper/121:24:251
1116699187,10cyclictest0-21swapper/120:25:151
1116699182,15cyclictest12697-21tune2fs23:00:161
11166991816,1cyclictest0-21swapper/121:32:371
11166991815,2cyclictest4035-21H222:10:211
11166991814,3cyclictest26356-21python320:35:001
11166991814,3cyclictest14504-21snapd21:35:281
11166991814,3cyclictest0-21swapper/123:40:201
1116699181,16cyclictest18475-21cut21:15:191
1116699180,2cyclictest3989-21H222:10:211
1116599182,2cyclictest6526-21expr20:55:130
1116599182,15cyclictest0-21swapper/021:20:220
11165991816,1cyclictest0-21swapper/022:05:160
11165991816,1cyclictest0-21swapper/019:35:160
11165991815,2cyclictest15356-21timerandwakeup00:00:260
1116599181,2cyclictest11451-21chrt19:10:080
1116599181,1cyclictest0-21swapper/022:35:550
1116599181,15cyclictest3981-21H222:10:210
1116599180,4cyclictest0-21swapper/021:17:540
1116599180,3cyclictest6691-21nfsd423:45:170
1116599180,1cyclictest0-21swapper/021:42:280
1116599180,17cyclictest3989-21H222:10:210
1116599180,17cyclictest0-21swapper/019:50:000
1116599180,16cyclictest14204-21chrt23:03:060
11167991715,1cyclictest3756-21expr22:45:132
11167991714,2cyclictest8437-21cstates23:50:122
11167991714,2cyclictest5324-21date23:45:002
11167991714,2cyclictest5074-21cstates19:55:122
11167991714,2cyclictest455-21plymouthd20:33:512
11167991714,2cyclictest29040-21df19:40:162
11167991714,2cyclictest26853-21apt-config20:35:022
11167991714,2cyclictest25425-21cat19:35:132
11167991714,2cyclictest24934-21cpuspeed_turbos00:20:132
11167991714,2cyclictest22561-21cstates00:15:142
11167991714,2cyclictest21909-21hddtemp_smartct22:20:162
11167991714,2cyclictest21322-21grep20:25:132
11167991714,2cyclictest20514-21run-parts22:17:012
11167991714,2cyclictest20514-21run-parts22:17:002
11167991714,2cyclictest20378-21fschecks_time19:25:152
11167991714,2cyclictest20075-21dpkg21:20:152
11167991714,2cyclictest19804-21cstates00:10:182
11167991714,2cyclictest1760-21grep22:40:212
11167991714,2cyclictest17290-21expr19:20:142
11167991714,2cyclictest15305-21cat23:05:152
11167991714,2cyclictest15305-21cat23:05:142
11167991714,2cyclictest11538-21fschecks_time23:55:122
11167991714,2cyclictest10579-21cstates22:00:142
1116799171,15cyclictest0-21swapper/221:48:172
1116799170,2cyclictest544-21nfsd423:35:162
1116799170,2cyclictest4099-21H222:10:212
1116799170,2cyclictest26085-21df21:30:152
1116799170,2cyclictest14500-21snapd22:25:142
1116799170,2cyclictest11535-21ntp_states20:05:202
1116799170,1cyclictest0-21swapper/221:00:162
1116799170,1cyclictest0-21swapper/220:40:152
1116799170,16cyclictest32194-21cat19:45:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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