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2026-07-21 - 16:09
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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 792 highest latencies:
System rackdslot0.osadl.org (updated Tue Jul 21, 2026 12:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2600699239,13cyclictest0-21swapper/210:00:412
2599799230,19cyclictest0-21swapper/007:23:370
2600699220,21cyclictest843-21systemd-network08:23:412
2599799220,18cyclictest0-21swapper/007:51:170
2600199210,20cyclictest843-21systemd-network12:36:161
2599799214,11cyclictest0-21swapper/007:25:240
25997992117,2cyclictest5088-21sed08:25:010
2599799210,3cyclictest0-21swapper/012:26:200
26006992017,2cyclictest20608-21ntp_kernel_pll_08:50:192
26006992017,2cyclictest20608-21ntp_kernel_pll_08:50:192
2599799204,15cyclictest0-21swapper/010:31:510
25997992017,2cyclictest4035-21H222:10:210
25997992014,5cyclictest0-21swapper/010:25:010
26006991917,1cyclictest28-21ksoftirqd/209:04:422
26006991917,1cyclictest0-21swapper/210:48:192
26006991914,4cyclictest8385-21wc08:30:162
2600699190,18cyclictest0-21swapper/212:27:502
2600699190,16cyclictest3981-21H222:10:212
2600699190,16cyclictest3979-21H222:10:212
2600699190,16cyclictest0-21swapper/207:20:192
2600199193,15cyclictest3979-21H222:10:211
2600199192,2cyclictest3987-21H222:10:211
2600199192,16cyclictest14499-21snapd07:40:291
26001991917,1cyclictest21-21ksoftirqd/107:20:021
26001991917,1cyclictest0-21swapper/111:25:151
26001991915,3cyclictest0-21swapper/111:17:411
2600199191,16cyclictest2031-21nfsd411:10:181
2600199190,16cyclictest3981-21H222:10:211
2600199190,16cyclictest3979-21H222:10:211
2599799196,9cyclictest18710-21latency_hist12:40:000
25997991914,4cyclictest3989-21H222:10:210
2600699182,15cyclictest0-21swapper/209:46:202
26006991816,1cyclictest0-21swapper/208:29:392
26006991815,2cyclictest17590-21/usr/sbin/munin11:40:162
26006991814,3cyclictest3987-21H222:10:212
2600699181,2cyclictest3989-21H222:10:212
2600699181,2cyclictest3981-21H222:10:212
2600699181,16cyclictest2401-21tr10:15:152
2600699180,2cyclictest3989-21H222:10:212
2600699180,2cyclictest3985-21H222:10:212
2600699180,17cyclictest399-20systemd-journal07:28:202
2600699180,15cyclictest3981-21H222:10:212
2600199182,15cyclictest3979-21H222:10:211
2600199182,15cyclictest3979-21H222:10:211
2600199182,15cyclictest21-21ksoftirqd/112:18:271
26001991816,1cyclictest21-21ksoftirqd/108:00:481
26001991816,1cyclictest0-21swapper/109:08:431
26001991815,2cyclictest6423-21sed08:25:181
26001991815,2cyclictest21-21ksoftirqd/111:50:021
26001991814,3cyclictest3976-21H222:10:211
26001991813,2cyclictest3991-21H222:10:211
2600199180,3cyclictest21411-21grep09:50:151
2600199180,2cyclictest4035-21H222:10:211
2600199180,2cyclictest4035-21H222:10:211
2600199180,2cyclictest3985-21H222:10:211
2600199180,2cyclictest3979-21H222:10:211
2600199180,17cyclictest3991-21H222:10:211
2600199180,17cyclictest3987-21H222:10:211
2600199180,17cyclictest14509-21perf09:40:001
2599799182,15cyclictest27361-21cut11:55:190
25997991816,1cyclictest0-21swapper/007:12:330
25997991815,2cyclictest3983-21H222:10:210
25997991814,3cyclictest4035-21H222:10:210
25997991813,3cyclictest0-21swapper/007:43:400
2599799181,2cyclictest3989-21H222:10:210
2599799180,3cyclictest3991-21H222:10:210
2599799180,2cyclictest4035-21H222:10:210
2599799180,2cyclictest3991-21H222:10:210
2599799180,2cyclictest3989-21H222:10:210
2599799180,2cyclictest3987-21H222:10:210
2599799180,2cyclictest3985-21H222:10:210
2599799180,2cyclictest3976-21H222:10:210
2599799180,17cyclictest0-21swapper/010:30:010
2599799180,16cyclictest3983-21H222:10:210
26006991714,2cyclictest6941-21expr12:15:222
26006991714,2cyclictest6300-21uname10:20:152
26006991714,2cyclictest3985-21H222:10:212
26006991714,2cyclictest3981-21H222:10:212
26006991714,2cyclictest3976-21H222:10:212
26006991714,2cyclictest18375-21sed07:50:162
26006991714,1cyclictest0-21swapper/210:40:172
26006991713,3cyclictest5106-21nfsd409:20:192
2600699171,15cyclictest0-21swapper/208:55:222
2600699170,2cyclictest8764-21smtpd09:28:532
2600699170,2cyclictest804-21expr12:05:202
2600699170,2cyclictest3991-21H222:10:212
2600699170,2cyclictest3991-21H222:10:212
2600699170,2cyclictest3985-21H222:10:212
2600699170,2cyclictest3981-21H222:10:212
2600699170,2cyclictest3979-21H222:10:212
2600699170,2cyclictest29018-21mailstats09:05:202
2600699170,2cyclictest18720-21perf12:40:012
2600699170,2cyclictest15646-21latency11:35:172
2600699170,2cyclictest13517-21mailstats11:30:212
2600699170,2cyclictest11805-21/usr/sbin/munin07:40:152
2600699170,1cyclictest3989-21H222:10:212
2600699170,1cyclictest3989-21H222:10:212
2600699170,1cyclictest0-21swapper/212:00:232
2600699170,1cyclictest0-21swapper/209:39:002
2600699170,1cyclictest0-21swapper/209:15:232
2600699170,1cyclictest0-21swapper/208:16:002
2600699170,1cyclictest0-21swapper/208:04:242
2600699170,16cyclictest7183-21grep11:20:152
2600699170,16cyclictest3991-21H222:10:212
2600699170,16cyclictest3985-21H222:10:212
2600699170,16cyclictest3979-21H222:10:212
2600699170,16cyclictest31673-21sendmail_mailqu11:05:222
2600699170,16cyclictest28222-21/usr/sbin/munin11:00:162
2600699170,16cyclictest27242-21awk08:05:212
2600699170,16cyclictest2452-21cpuspeed_turbos12:10:152
2600699170,16cyclictest15963-21grep07:45:202
2600699170,15cyclictest3987-21H222:10:212
2600199172,1cyclictest0-21swapper/112:29:011
26001991716,1cyclictest21-21ksoftirqd/109:15:551
26001991714,2cyclictest863-21avahi-daemon09:25:221
26001991714,2cyclictest7097-21df_inode11:20:141
26001991714,2cyclictest3981-21H222:10:211
26001991714,2cyclictest3979-21H222:10:211
26001991714,2cyclictest32381-21if_eno108:15:171
26001991714,2cyclictest31633-21processes11:05:221
26001991714,2cyclictest17176-21munin-run11:40:001
26001991713,3cyclictest3987-21H222:10:211
2600199171,1cyclictest3991-21H222:10:211
2600199171,15cyclictest3989-21H222:10:211
2600199170,2cyclictest993-21dbus-daemon09:45:221
2600199170,2cyclictest3989-21H222:10:211
2600199170,2cyclictest3979-21H222:10:211
2600199170,2cyclictest30312-21/usr/sbin/munin09:10:141
2600199170,2cyclictest12193-21cpuspeed_turbos11:30:141
2600199170,1cyclictest3976-21H222:10:211
2600199170,16cyclictest863-21avahi-daemon10:25:221
2600199170,16cyclictest4355-21timerandwakeup12:10:231
2600199170,16cyclictest4189-21expr09:20:141
2600199170,16cyclictest3987-21H222:10:211
2600199170,16cyclictest3985-21H222:10:211
2600199170,16cyclictest3983-21H222:10:211
2600199170,16cyclictest20032-21if_enp1s008:50:171
2600199170,16cyclictest20032-21if_enp1s008:50:161
2600199170,16cyclictest18942-21awk11:40:191
2600199170,16cyclictest17653-21/usr/sbin/munin08:45:181
2600199170,16cyclictest16610-21cpuspeed_turbos10:40:131
2600199170,15cyclictest3987-21H222:10:211
25997991715,1cyclictest9-21ksoftirqd/010:55:270
25997991715,1cyclictest9-21ksoftirqd/009:32:080
25997991715,1cyclictest0-21swapper/009:13:580
25997991714,2cyclictest8743-21fschecks_count08:30:160
25997991714,2cyclictest3991-21H222:10:210
25997991714,2cyclictest3991-21H222:10:210
25997991714,2cyclictest3991-21H222:10:210
25997991714,2cyclictest3976-21H222:10:210
25997991714,2cyclictest23218-21grep08:55:200
25997991714,2cyclictest15881-21nfsd407:45:200
25997991714,2cyclictest12013-21grep08:35:180
25997991713,3cyclictest3989-21H222:10:210
25997991713,3cyclictest3981-21H222:10:210
2599799171,15cyclictest9-21ksoftirqd/009:00:460
2599799170,2cyclictest465-21latency10:10:180
2599799170,2cyclictest3987-21H222:10:210
2599799170,2cyclictest3976-21H222:10:210
2599799170,2cyclictest25025-21pzem_current09:55:220
2599799170,2cyclictest21034-21expr09:50:140
2599799170,2cyclictest2014-21pickup08:41:030
2599799170,2cyclictest15945-21lxd11:10:430
2599799170,1cyclictest3981-21H222:10:210
2599799170,16cyclictest7927-21ntpq09:25:190
2599799170,16cyclictest7016-21cat07:30:170
2599799170,16cyclictest5470-21switchtime11:15:230
2599799170,16cyclictest3989-21H222:10:210
2599799170,16cyclictest3981-21H222:10:210
2599799170,16cyclictest3053-21systemd-logind08:06:350
2599799170,16cyclictest24863-21ntp_states11:50:190
2599799170,16cyclictest17644-21sed08:45:180
2599799170,16cyclictest14462-21cut10:35:160
2599799170,15cyclictest3976-21H222:10:210
26006991614,1cyclictest3985-21H222:10:212
26006991614,1cyclictest0-21swapper/209:10:192
26006991614,1cyclictest0-21swapper/207:30:012
26006991614,1cyclictest0-21swapper/207:15:012
2600699160,15cyclictest20761-21/usr/sbin/munin09:50:162
2600699160,15cyclictest0-21swapper/210:25:232
2600699160,15cyclictest0-21swapper/209:40:012
26001991614,1cyclictest10803-21/usr/sbin/munin10:30:111
26001991614,1cyclictest0-21swapper/110:55:091
26001991614,1cyclictest0-21swapper/110:20:131
26001991614,1cyclictest0-21swapper/109:00:141
26001991613,2cyclictest19611-21perf07:55:001
2600199160,15cyclictest29124-21expr08:10:141
2600199160,15cyclictest13995-21expr12:30:161
2600199160,15cyclictest0-21swapper/110:15:201
2600199160,15cyclictest0-21swapper/109:40:171
25997991615,1cyclictest8800-21idleruntime12:20:150
25997991614,1cyclictest0-21swapper/010:53:300
25997991614,1cyclictest0-21swapper/010:08:590
25997991614,1cyclictest0-21swapper/009:45:500
25997991613,2cyclictest3984-21H222:10:210
25997991611,4cyclictest870-21systemd-logind10:04:520
2599799160,2cyclictest4569-21ls09:20:160
2599799160,15cyclictest15916-21df09:40:140
2599799160,15cyclictest12862-21irqstats11:30:170
2599799160,15cyclictest0-21swapper/009:35:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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