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2026-03-24 - 09:54
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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 376 highest latencies:
System rackdslot0.osadl.org (updated Tue Mar 24, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
119699232,18cyclictest1816-21apache_accesses21:05:111
119699230,22cyclictest0-21swapper/123:52:311
119699230,22cyclictest0-21swapper/123:25:141
120099226,15cyclictest0-21swapper/223:35:162
1200992212,3cyclictest0-21swapper/220:00:152
119699220,21cyclictest843-21systemd-network19:12:251
119699220,18cyclictest0-21swapper/122:18:571
119599223,11cyclictest14524-21munin-run23:20:000
119699212,16cyclictest0-21swapper/120:37:001
1196992114,3cyclictest0-21swapper/122:20:481
1196992112,0cyclictest0-21swapper/121:45:161
1200992015,2cyclictest0-21swapper/222:20:182
1196992018,1cyclictest0-21swapper/123:02:131
1196992016,3cyclictest0-21swapper/123:32:411
119699200,3cyclictest0-21swapper/119:22:531
1195992020,0cyclictest0-21swapper/023:58:270
120099192,16cyclictest0-21swapper/219:34:472
1200991916,2cyclictest3979-21H222:10:212
120099191,17cyclictest0-21swapper/221:05:192
120099190,18cyclictest0-21swapper/219:18:292
119699193,15cyclictest32290-21sed21:55:211
119699193,15cyclictest18539-21expr00:20:211
119699192,2cyclictest11668-21perf23:14:591
119699192,16cyclictest7512-21cat21:15:011
119699192,16cyclictest14156-21grep00:15:141
1196991917,1cyclictest12193-21cpuspeed_turbos23:15:141
1196991916,1cyclictest0-21swapper/120:43:261
119699191,3cyclictest863-21avahi-daemon21:20:211
119699190,18cyclictest843-21systemd-network21:31:271
119699190,18cyclictest0-21swapper/120:54:381
119699190,18cyclictest0-21swapper/120:14:271
119599193,15cyclictest0-21swapper/022:19:040
1195991914,4cyclictest30511-21ps23:45:190
1195991914,2cyclictest3991-21H222:10:210
120099182,1cyclictest0-21swapper/221:36:292
1200991814,2cyclictest15160-21pzem21:25:202
120099180,3cyclictest560-21cut23:50:182
120099180,17cyclictest5005-21cut22:05:162
120099180,17cyclictest15523-21expr22:25:142
120099180,16cyclictest0-21swapper/223:24:482
119699182,1cyclictest24334-21cat21:40:221
119699182,1cyclictest0-21swapper/121:00:191
119699182,1cyclictest0-21swapper/119:40:131
119699182,15cyclictest307052chrt20:56:591
119699182,15cyclictest28633-21latency_hist23:44:591
119699182,15cyclictest0-21swapper/123:45:211
1196991816,1cyclictest9790-21switchtime21:15:211
1196991816,1cyclictest288002chrt19:58:281
1196991816,1cyclictest22643-21expr00:30:121
1196991815,2cyclictest5134-21expr19:15:141
1196991815,2cyclictest18594-21cstates22:30:121
119699181,2cyclictest29533-21switchtime21:50:201
119699181,2cyclictest16215-21fschecks_time19:35:161
119699181,16cyclictest8493-21chrt20:19:421
119699181,16cyclictest26961-21cstates22:45:171
119699181,16cyclictest21616-21chrt00:25:551
119699180,3cyclictest13401-21sort19:30:131
119699180,17cyclictest870-21systemd-logind20:32:311
119699180,17cyclictest0-21swapper/122:25:131
119699180,16cyclictest0-21swapper/100:09:091
119699180,15cyclictest0-21swapper/123:10:001
119599182,1cyclictest377-21open_inodes21:00:210
119599182,15cyclictest326572chrt21:57:040
119599181,16cyclictest21012-21date19:45:010
119599180,3cyclictest0-21swapper/019:57:360
119599180,16cyclictest4714-21cpuspeed_turbos19:15:140
120099172,1cyclictest28-21ksoftirqd/222:11:152
1200991715,1cyclictest0-21swapper/223:01:472
1200991715,1cyclictest0-21swapper/221:15:222
1200991714,2cyclictest822-21munin-plugin-st22:00:012
1200991714,2cyclictest501-21/usr/sbin/munin22:55:102
1200991714,2cyclictest3989-21H222:10:212
1200991714,2cyclictest28750-21chrt22:46:492
1200991714,2cyclictest26309-21latency_hist19:55:002
1200991714,2cyclictest20457-21if_enp1s000:25:172
1200991714,2cyclictest18949-21timerandwakeup20:35:242
1200991714,2cyclictest16754-21snapd20:55:182
1200991714,2cyclictest15344-21nfsd400:15:182
1200991714,2cyclictest1522-21lxd22:32:342
1200991714,2cyclictest1100-21snmpd22:42:092
1200991714,2cyclictest1079-21cups-browsed23:40:222
120099170,3cyclictest0-21swapper/220:41:592
120099170,2cyclictest7626-21grep23:05:182
120099170,2cyclictest3981-21H222:10:212
120099170,2cyclictest31034-21nfsd422:50:182
120099170,16cyclictest9080-21threads19:20:212
120099170,16cyclictest8863-21cat20:20:012
120099170,16cyclictest5864-21df00:00:132
120099170,16cyclictest3981-21H222:10:212
120099170,16cyclictest23476-21chrt22:39:352
120099170,16cyclictest12826-21idleruntime23:15:152
120099170,16cyclictest11223-21dpkg00:10:002
120099170,16cyclictest10964-21awk22:15:182
1196991714,2cyclictest30427-21missed_timers20:00:181
1196991713,3cyclictest399-20systemd-journal23:35:011
119699171,15cyclictest3251-21chrt22:02:181
119699170,2cyclictest4122-21cat23:55:201
119699170,2cyclictest31362-21/usr/sbin/munin22:50:211
119699170,2cyclictest24494-21/usr/sbin/munin19:50:151
119699170,2cyclictest23044-21cstates20:45:161
119699170,2cyclictest23044-21cstates20:45:151
119699170,2cyclictest21331-21expr22:35:131
119699170,2cyclictest19821-21cstates21:35:131
119699170,2cyclictest15210-21find23:20:111
119699170,2cyclictest12107-21cstates20:25:151
119699170,2cyclictest10515-21expr19:25:131
119699170,1cyclictest0-21swapper/121:25:171
119699170,1cyclictest0-21swapper/100:35:161
119699170,16cyclictest9293-21expr20:20:161
119699170,16cyclictest853-21expr22:55:111
119699170,16cyclictest8344-21ntp_kernel_err22:10:191
119699170,16cyclictest6293-21chrt22:08:431
119699170,16cyclictest5990-21hddtemp_smartct00:00:131
119699170,16cyclictest391-21cstates20:05:161
119699170,16cyclictest24655-21uniq22:40:141
119699170,16cyclictest21233-21cpuspeed_turbos19:45:141
119699170,16cyclictest12969-21mailstats00:10:231
1195991715,1cyclictest0-21swapper/021:05:140
1195991715,1cyclictest0-21swapper/020:40:150
1195991714,2cyclictest8867-21chrt23:09:200
1195991714,2cyclictest3981-21H222:10:210
1195991714,2cyclictest3981-21H222:10:210
1195991714,2cyclictest3351-21lxd21:24:480
1195991714,2cyclictest31697-21munin-run20:05:000
1195991714,2cyclictest26787-21if_lxdbr020:50:180
1195991714,2cyclictest1521-21lxd19:36:480
1195991714,2cyclictest13477-21cat20:25:220
1195991714,2cyclictest10737-21fschecks_time19:25:150
1195991713,3cyclictest0-21swapper/023:31:510
1195991713,3cyclictest0-21swapper/020:55:180
119599170,3cyclictest3538-21munin-plugin-st23:00:010
119599170,2cyclictest8120-21cpuspeed_turbos00:05:140
119599170,2cyclictest25180-21nfsd422:40:170
119599170,2cyclictest15483-21cat22:25:130
119599170,2cyclictest1395-21users23:50:230
119599170,2cyclictest11920-21expr00:10:160
119599170,1cyclictest3985-21H222:10:210
119599170,16cyclictest7418-21python321:15:000
119599170,16cyclictest6195-21kernelversion00:00:150
119599170,16cyclictest27080-21expr22:45:160
119599170,16cyclictest23354-21ls21:40:160
119599170,16cyclictest19142-21if_enp1s022:30:140
119599170,16cyclictest17838-21kernelversion00:20:160
119599170,16cyclictest1774-21/usr/sbin/munin22:00:160
119599170,16cyclictest17576-21netstat21:30:190
119599170,16cyclictest16745-21snapd00:17:480
119599170,16cyclictest16574-21chrt20:33:200
119599170,16cyclictest16484-21awk23:20:190
119599170,16cyclictest1100-21snmpd20:24:380
119599170,16cyclictest0-21swapper/021:35:030
1200991614,1cyclictest3987-21H222:10:212
1200991614,1cyclictest271462sleep200:36:532
1200991614,1cyclictest2358-21awk22:00:182
1200991614,1cyclictest0-21swapper/223:30:142
1200991614,1cyclictest0-21swapper/221:40:132
1200991614,1cyclictest0-21swapper/220:25:062
1200991614,1cyclictest0-21swapper/220:20:242
1200991614,1cyclictest0-21swapper/219:40:122
1200991614,1cyclictest0-21swapper/200:00:002
1200991613,2cyclictest17479-21df00:20:142
120099160,1cyclictest29199-21awk21:50:182
120099160,1cyclictest0-21swapper/220:45:152
120099160,1cyclictest0-21swapper/220:45:152
120099160,1cyclictest0-21swapper/219:35:212
120099160,15cyclictest6178-21needreboot21:10:192
120099160,15cyclictest28567-21vmstat19:55:222
120099160,15cyclictest19074-21missed_timers23:25:172
120099160,15cyclictest11503-21entropy21:20:152
120099160,15cyclictest11119-21timerandwakeup23:10:202
120099160,15cyclictest0-21swapper/221:30:122
120099160,15cyclictest0-21swapper/220:50:022
120099160,15cyclictest0-21swapper/220:30:142
120099160,15cyclictest0-21swapper/219:25:182
120099160,15cyclictest0-21swapper/200:30:152
1195991614,1cyclictest0-21swapper/023:10:100
1195991614,1cyclictest0-21swapper/022:35:190
1195991614,1cyclictest0-21swapper/021:50:130
1195991614,1cyclictest0-21swapper/021:25:140
1195991614,1cyclictest0-21swapper/020:45:160
1195991614,1cyclictest0-21swapper/020:45:160
1195991614,1cyclictest0-21swapper/019:30:100
1195991614,1cyclictest0-21swapper/000:35:210
1195991613,2cyclictest29725-21gpgv22:50:010
1195991613,2cyclictest19648-21/usr/sbin/munin00:25:150
119599160,2cyclictest27018-21grep23:40:150
119599160,1cyclictest18272-21ls23:25:120
119599160,1cyclictest0-21swapper/022:05:120
119599160,15cyclictest7830-21ls19:20:140
119599160,15cyclictest3989-21H222:10:210
119599160,15cyclictest3183-21pzem_power19:10:180
119599160,15cyclictest22060-21cat19:45:170
119599160,15cyclictest17322-21cpuspeed_turbos20:35:150
119599160,15cyclictest0-21swapper/023:35:130
119599160,15cyclictest0-21swapper/023:00:180
119599160,15cyclictest0-21swapper/022:20:120
119599160,15cyclictest0-21swapper/022:10:140
119599160,15cyclictest0-21swapper/021:45:170
119599160,15cyclictest0-21swapper/021:15:190
120099150,1cyclictest0-21swapper/221:48:422
120099150,14cyclictest0-21swapper/223:45:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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