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2026-04-30 - 11:58
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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 highest latencies:
System rackdslot0.osadl.org (updated Thu Apr 30, 2026 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
899993229,2cyclictest0-21swapper/120:30:161
89599262,23cyclictest15323-21nfsd420:30:170
89999230,5cyclictest0-21swapper/119:14:381
895992214,5cyclictest0-21swapper/021:00:160
906992018,1cyclictest8855-21grep21:15:162
89999202,17cyclictest0-21swapper/120:40:181
899992013,4cyclictest0-21swapper/121:47:261
89599204,15cyclictest0-21swapper/021:41:020
90699193,15cyclictest0-21swapper/223:36:122
90699192,16cyclictest12720-21grep20:25:192
906991917,1cyclictest0-21swapper/222:50:122
90699190,3cyclictest0-21swapper/221:50:002
89999190,2cyclictest30253-21users20:55:211
895991917,1cyclictest3989-21H222:10:210
895991917,1cyclictest3989-21H222:10:210
895991915,3cyclictest8205-21sh20:20:010
895991914,4cyclictest843-21systemd-network23:04:460
89599190,5cyclictest0-21swapper/023:46:510
90699182,15cyclictest28-21ksoftirqd/219:15:522
906991816,1cyclictest6901-21ntp_offset22:20:192
906991815,2cyclictest32012-21nfsd423:30:172
906991815,2cyclictest2845-21nfsd421:05:192
906991815,1cyclictest0-21swapper/222:05:002
90699181,16cyclictest4812-21cron23:45:012
90699181,16cyclictest3895-21smtpd22:10:582
90699180,3cyclictest1351-21lxd23:52:352
90699180,17cyclictest29181-21wc21:55:012
89999182,15cyclictest19735-21chrt00:22:051
89999182,15cyclictest0-21swapper/121:20:211
89999182,15cyclictest0-21swapper/121:20:201
89999181,16cyclictest32012-21nfsd423:30:181
89999180,3cyclictest5103-21munin-run22:20:001
89999180,17cyclictest18668-21cstates21:35:151
89999180,16cyclictest25049-21nfsd423:10:171
895991815,2cyclictest2855-21cut23:40:140
89599180,0cyclictest0-21swapper/023:20:000
90699172,1cyclictest28-21ksoftirqd/200:12:072
906991715,1cyclictest0-21swapper/223:12:502
906991715,1cyclictest0-21swapper/221:20:172
906991715,1cyclictest0-21swapper/221:20:162
906991715,1cyclictest0-21swapper/200:06:532
906991714,2cyclictest30442-21kernelversion20:00:162
906991714,2cyclictest22408-21cron23:05:012
90699171,15cyclictest10361-21ntp_kernel_err22:30:182
90699170,2cyclictest7135-21awk20:15:162
90699170,2cyclictest3855-21idleruntime20:10:182
90699170,2cyclictest3053-21systemd-logind21:56:512
90699170,2cyclictest25151-21cron20:50:012
90699170,2cyclictest22374-21missed_timers19:45:172
90699170,2cyclictest18477-21grep21:35:132
90699170,2cyclictest16788-21wc21:30:172
90699170,2cyclictest15296-21munin-run19:35:002
90699170,16cyclictest9545-21awk20:20:162
90699170,16cyclictest623-21anvil22:09:112
90699170,16cyclictest3987-21H222:10:212
90699170,16cyclictest3053-21systemd-logind22:16:512
90699170,16cyclictest28690-21ntp_offset23:20:172
90699170,16cyclictest22868-21sendmail_mailqu21:40:192
90699170,16cyclictest21125-21smtp00:29:532
90699170,16cyclictest20121-21/usr/sbin/munin20:40:162
90699170,16cyclictest19283-21cron20:40:002
90699170,16cyclictest14485-21pzem_energy21:25:212
90699170,16cyclictest14070-21/usr/sbin/munin20:30:132
90699170,16cyclictest12004-21sshd00:02:162
90699170,16cyclictest1085-21gdbus00:30:202
899991715,1cyclictest21-21ksoftirqd/123:08:181
899991715,1cyclictest21-21ksoftirqd/123:08:171
899991714,2cyclictest20786-21chrt00:25:161
899991714,2cyclictest1079-21cups-browsed20:45:211
89999171,2cyclictest1035-21thermald19:25:221
89999171,1cyclictest30740-21nfsd420:00:171
89999171,1cyclictest16702-21cat19:35:171
89999171,1cyclictest16702-21cat19:35:171
89999171,15cyclictest82232sleep122:25:191
89999171,15cyclictest196422chrt22:59:461
89999170,2cyclictest6217-21ps19:15:191
89999170,2cyclictest16114-21python300:15:011
89999170,2cyclictest1523-21lxd20:12:491
89999170,16cyclictest7049-21cron21:19:551
89999170,16cyclictest5960-21expr22:20:141
89999170,16cyclictest4978-21cpuspeed_turbos21:10:131
89999170,16cyclictest455-21plymouthd23:00:201
89999170,16cyclictest3979-21H222:10:211
89999170,16cyclictest3637-21grep22:10:201
89999170,16cyclictest31205-21cut22:00:171
89999170,16cyclictest27378-21fschecks_count21:50:141
89999170,16cyclictest24453-21expr19:50:121
89999170,16cyclictest21996-21tune2fs21:40:141
89999170,16cyclictest17612-21latency22:50:161
89999170,16cyclictest17216-21expr20:35:151
89999170,16cyclictest14482-21sshd21:25:211
89999170,16cyclictest1192-21grep20:05:181
89999170,15cyclictest3981-21H222:10:211
895991715,1cyclictest177722chrt21:32:080
895991715,1cyclictest0-21swapper/022:00:000
895991715,1cyclictest0-21swapper/000:10:460
895991714,2cyclictest8946-21ls20:20:140
895991714,2cyclictest21157-21turbostat00:30:010
895991714,2cyclictest20764-21fschecks_count20:40:150
895991714,2cyclictest1348-21lxd22:18:500
895991714,2cyclictest1035-21thermald20:45:210
89599170,3cyclictest28054-21grep19:55:170
89599170,3cyclictest0-21swapper/021:35:320
89599170,16cyclictest993-21dbus-daemon21:25:220
89599170,16cyclictest7819-21munin-run22:25:010
89599170,16cyclictest3402-21expr20:10:150
89599170,16cyclictest31370-21expr23:30:140
89599170,16cyclictest30702-21munin-run21:00:010
89599170,16cyclictest23849-21grep23:10:120
89599170,16cyclictest22727-21ntpq19:45:190
89599170,16cyclictest19655-21dpkg20:40:020
89599170,16cyclictest15776-21grep19:35:130
89599170,16cyclictest15776-21grep19:35:130
89599170,16cyclictest10277-21expr00:00:120
906991614,1cyclictest0-21swapper/223:30:012
906991614,1cyclictest0-21swapper/222:57:362
906991614,1cyclictest0-21swapper/222:45:022
906991614,1cyclictest0-21swapper/222:26:182
906991614,1cyclictest0-21swapper/220:05:142
906991614,1cyclictest0-21swapper/219:50:162
906991614,1cyclictest0-21swapper/219:20:112
906991614,1cyclictest0-21swapper/200:20:132
906991613,2cyclictest5589-21apt-get23:49:592
906991613,2cyclictest25584-21apache_processe20:50:112
906991613,2cyclictest1551-21expr19:10:132
90699160,2cyclictest28295-21pzem_current19:55:192
90699160,2cyclictest0-21swapper/219:35:192
90699160,2cyclictest0-21swapper/219:35:182
90699160,1cyclictest228962sleep223:06:122
90699160,1cyclictest228962sleep223:06:122
90699160,1cyclictest10660-21expr19:25:142
90699160,1cyclictest0-21swapper/222:42:442
90699160,15cyclictest5585-21if_err_eno121:10:162
90699160,15cyclictest2872-21systemd-logind00:38:512
90699160,15cyclictest0-21swapper/223:15:472
90699160,15cyclictest0-21swapper/222:37:102
90699160,15cyclictest0-21swapper/221:00:152
899991614,1cyclictest215422chrt00:30:051
899991614,1cyclictest0-21swapper/123:40:161
899991614,1cyclictest0-21swapper/123:36:331
899991614,1cyclictest0-21swapper/122:46:451
899991614,1cyclictest0-21swapper/122:07:031
899991614,1cyclictest0-21swapper/121:00:131
899991614,1cyclictest0-21swapper/120:20:111
899991614,1cyclictest0-21swapper/120:15:151
899991614,1cyclictest0-21swapper/119:55:171
899991614,1cyclictest0-21swapper/119:30:021
899991614,1cyclictest0-21swapper/119:20:151
899991614,1cyclictest0-21swapper/100:00:171
89999161,1cyclictest92222chrt23:56:411
89999160,2cyclictest26791-21nfsd420:50:191
89999160,2cyclictest16502-21if_enp1s021:30:151
89999160,1cyclictest4099-21H222:10:211
89999160,1cyclictest0-21swapper/123:50:151
89999160,1cyclictest0-21swapper/123:20:131
89999160,1cyclictest0-21swapper/122:30:151
89999160,15cyclictest30635-21munin-plugin-st23:30:001
89999160,15cyclictest21304-21chrt19:45:091
89999160,15cyclictest19281-21/usr/sbin/munin19:40:161
89999160,15cyclictest0-21swapper/122:40:201
89999160,15cyclictest0-21swapper/121:05:201
89999160,15cyclictest0-21swapper/120:25:181
89999160,15cyclictest0-21swapper/100:36:021
895991614,1cyclictest10437-21expr21:20:120
895991614,1cyclictest10437-21expr21:20:120
895991614,1cyclictest0-21swapper/023:20:140
895991614,1cyclictest0-21swapper/022:50:130
895991614,1cyclictest0-21swapper/021:05:140
895991614,1cyclictest0-21swapper/020:25:180
895991614,1cyclictest0-21swapper/019:55:000
895991614,1cyclictest0-21swapper/019:41:270
895991614,1cyclictest0-21swapper/019:30:190
895991614,1cyclictest0-21swapper/000:39:150
895991614,1cyclictest0-21swapper/000:32:360
895991614,1cyclictest0-21swapper/000:20:130
895991613,2cyclictest6414-21apache_accesses23:50:100
895991613,2cyclictest27914-21perf20:55:000
895991613,2cyclictest12815-21systemctl00:06:530
89599160,2cyclictest10236-21apache_volume19:25:120
89599160,1cyclictest0-21swapper/022:42:560
89599160,1cyclictest0-21swapper/022:10:170
89599160,1cyclictest0-21swapper/020:05:220
89599160,15cyclictest5407-21fschecks_count21:10:160
89599160,15cyclictest3450-21gsd-color19:20:200
89599160,15cyclictest316502chrt22:00:200
89599160,15cyclictest1818-21expr19:10:130
89599160,15cyclictest15881-21chrt22:46:080
89599160,15cyclictest0-21swapper/023:00:000
89599160,15cyclictest0-21swapper/022:10:000
89599160,15cyclictest0-21swapper/021:50:130
89599160,15cyclictest0-21swapper/021:45:000
89599160,15cyclictest0-21swapper/021:15:120
89599160,15cyclictest0-21swapper/020:00:180
89599160,15cyclictest0-21swapper/019:15:020
89599160,15cyclictest0-21swapper/000:00:000
906991514,0cyclictest0-21swapper/223:59:412
90699150,1cyclictest0-21swapper/220:55:212
90699150,1cyclictest0-21swapper/200:18:352
899991514,1cyclictest0-21swapper/100:15:191
899991513,1cyclictest0-21swapper/123:47:021
895991514,1cyclictest0-21swapper/022:30:190
895991513,1cyclictest1318-21chrt23:36:550
89599150,15cyclictest1191-21nfsd00:16:180
89599150,14cyclictest0-21swapper/023:27:220
89599150,14cyclictest0-21swapper/022:25:230
89999140,0cyclictest0-21swapper/121:55:111
89599140,0cyclictest0-21swapper/022:35:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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