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2025-12-15 - 03:35
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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 Mon Dec 15, 2025 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1945899220,4cyclictest0-21swapper/021:20:010
19460992016,3cyclictest0-21swapper/221:35:122
19460992014,3cyclictest0-21swapper/221:25:112
1945999204,15cyclictest0-21swapper/120:40:011
1945999202,17cyclictest0-21swapper/123:14:511
1945899204,1cyclictest0-21swapper/022:03:290
1945899200,17cyclictest0-21swapper/019:40:410
19460991916,2cyclictest28074-21nfsd423:12:132
19460991914,3cyclictest0-21swapper/200:00:002
19460991914,2cyclictest3983-21H222:02:192
1946099191,3cyclictest0-21swapper/200:23:302
1946099190,17cyclictest3976-21H222:02:192
1946099190,16cyclictest3991-21H222:02:192
1945999194,1cyclictest3985-21H222:02:191
1945999192,11cyclictest19998-21/usr/sbin/munin23:00:001
19459991914,3cyclictest11555-21munin-run23:40:001
1945999191,17cyclictest0-21swapper/100:34:271
1945999190,1cyclictest0-21swapper/121:37:091
1945999190,16cyclictest3983-21H222:02:191
19458991916,2cyclictest0-21swapper/023:59:510
19458991914,3cyclictest3989-21H222:02:190
1945899191,17cyclictest0-21swapper/021:36:460
1945899190,18cyclictest0-21swapper/021:11:290
1945899190,16cyclictest3979-21H222:02:190
19460991816,1cyclictest6850-21expr22:37:092
19460991816,1cyclictest28-21ksoftirqd/223:07:242
19460991816,1cyclictest0-21swapper/219:16:492
19460991815,2cyclictest5644-21chrt00:26:232
19460991814,3cyclictest0-21swapper/219:23:062
1946099181,1cyclictest3980-21H222:02:192
1946099180,1cyclictest0-21swapper/200:03:372
1946099180,17cyclictest26563-21iwlist21:17:132
1946099180,16cyclictest3989-21H222:02:192
1946099180,16cyclictest3979-21H222:02:192
1946099180,16cyclictest0-21swapper/222:10:192
1946099180,15cyclictest3991-21H222:02:192
1945999182,15cyclictest16179-21nfsd422:52:151
19459991816,1cyclictest21-21ksoftirqd/100:39:231
19459991816,1cyclictest21-21ksoftirqd/100:27:241
19459991816,1cyclictest0-21swapper/100:10:001
19459991814,3cyclictest3981-21H222:02:191
1945999181,16cyclictest3985-21H222:02:191
1945999180,2cyclictest4035-21H222:02:191
1945999180,2cyclictest3991-21H222:02:191
1945999180,2cyclictest0-21swapper/123:54:431
1945999180,17cyclictest1523-21lxd20:42:461
1945999180,15cyclictest3991-21H222:02:191
1945999180,15cyclictest3981-21H222:02:191
1945899182,2cyclictest4099-21H222:02:190
1945899182,2cyclictest4099-21H222:02:190
1945899182,15cyclictest131222sleep000:37:260
1945899182,15cyclictest0-21swapper/023:12:290
19458991816,1cyclictest3986-21H222:02:190
19458991816,1cyclictest0-21swapper/022:28:040
19458991814,3cyclictest3979-21H222:02:190
1945899181,16cyclictest17642-21cstates23:52:090
1945899180,17cyclictest4035-21H222:02:190
1945899180,17cyclictest1377-21lxd19:10:460
1945899180,17cyclictest0-21swapper/019:32:140
1945899180,15cyclictest0-21swapper/019:20:550
19460991715,1cyclictest11194-21cpuspeed_turbos21:47:102
19460991715,1cyclictest0-21swapper/220:15:312
19460991714,2cyclictest9942-21/usr/sbin/munin23:37:142
19460991714,2cyclictest9140-21/usr/sbin/munin20:47:132
19460991714,2cyclictest4035-21H222:02:192
19460991714,2cyclictest26035-21/usr/sbin/munin00:07:162
19460991713,1cyclictest0-21swapper/223:52:092
1946099171,2cyclictest20158-21nfsd420:07:142
1946099171,15cyclictest3991-21H222:02:192
1946099171,15cyclictest0-21swapper/220:30:012
1946099170,2cyclictest8764-21cat00:32:102
1946099170,2cyclictest4431-21kernelversion20:37:122
1946099170,2cyclictest4035-21H222:02:192
1946099170,2cyclictest4035-21H222:02:192
1946099170,2cyclictest3989-21H222:02:192
1946099170,2cyclictest3981-21H222:02:192
1946099170,2cyclictest28829-21expr19:27:112
1946099170,2cyclictest27279-21chrt20:22:042
1946099170,2cyclictest13499-21switchtime20:52:172
1946099170,2cyclictest0-21swapper/219:32:092
1946099170,1cyclictest0-21swapper/222:52:102
1946099170,1cyclictest0-21swapper/219:51:212
1946099170,16cyclictest946-21grep22:27:102
1946099170,16cyclictest6932-21ls20:42:112
1946099170,16cyclictest5547-21grep19:42:102
1946099170,16cyclictest3976-21H222:02:192
1946099170,16cyclictest3251-21expr23:27:102
1946099170,16cyclictest32345-21apt-get23:22:092
1946099170,16cyclictest3172-21latency19:37:142
1946099170,16cyclictest24113-21grep21:12:142
1946099170,16cyclictest2268-21fschecks_time21:32:122
1946099170,16cyclictest2007-21systemd-journal22:59:062
1946099170,16cyclictest19893-21/usr/sbin/munin19:12:182
1946099170,16cyclictest18733-21ntpq21:02:142
1946099170,16cyclictest16004-21cut20:00:012
1946099170,15cyclictest4035-21H222:02:192
1946099170,15cyclictest0-21swapper/222:40:312
19459991715,1cyclictest78522sleep121:40:191
19459991715,1cyclictest0-21swapper/119:55:341
19459991714,2cyclictest4099-21H222:02:191
19459991714,2cyclictest4035-21H222:02:191
19459991714,2cyclictest3991-21H222:02:191
19459991714,2cyclictest3989-21H222:02:191
19459991714,2cyclictest32272-21missed_timers21:27:141
19459991714,2cyclictest30650-21cron19:30:011
19459991714,2cyclictest28698-21ntp_states20:22:141
19459991714,2cyclictest2859-21vmstat22:27:191
19459991714,2cyclictest2704-21cpu00:22:101
19459991714,2cyclictest25568-21apt-key19:20:011
19459991714,2cyclictest24540-21systemctl21:12:171
19459991714,2cyclictest18211-21chrt20:02:571
1945999171,2cyclictest993-21dbus-daemon22:02:181
1945999170,2cyclictest6885-21wc23:32:131
1945999170,2cyclictest4099-21H222:02:191
1945999170,2cyclictest3979-21H222:02:191
1945999170,2cyclictest3979-21H222:02:191
1945999170,2cyclictest3976-21H222:02:191
1945999170,2cyclictest3644-21fschecks_count23:27:101
1945999170,2cyclictest31233-21nfsd420:27:151
1945999170,2cyclictest12382-21ls20:52:101
1945999170,1cyclictest0-21swapper/123:57:181
1945999170,16cyclictest8035-21apache_accesses19:47:081
1945999170,16cyclictest3991-21H222:02:191
1945999170,16cyclictest29117-21proc_pri22:17:141
1945999170,16cyclictest24175-21find22:08:591
1945999170,16cyclictest2412-21sed23:25:001
1945999170,16cyclictest23034-21netstat20:12:151
1945999170,16cyclictest20828-21/usr/sbin/munin23:02:171
1945999170,16cyclictest11007-21chrt21:45:401
1945999170,16cyclictest0-21swapper/121:20:371
1945999170,15cyclictest3981-21H222:02:191
19458991715,1cyclictest4035-21H222:02:190
19458991714,2cyclictest8691-21fschecks_time19:47:110
19458991714,2cyclictest6822-21expr20:42:110
19458991714,2cyclictest6159-21expr23:32:090
19458991714,2cyclictest3976-21H222:02:190
19458991714,2cyclictest21580-21http_loadtime23:02:120
19458991714,2cyclictest20136-21cpuspeed_turbos21:07:100
19458991714,2cyclictest19504-21expr20:07:100
19458991714,2cyclictest15634-21munin-run20:00:010
19458991714,2cyclictest0-21swapper/020:37:130
19458991714,2cyclictest0-21swapper/000:16:120
1945899171,2cyclictest1140-21snapd20:26:320
1945899171,15cyclictest9-21ksoftirqd/019:16:160
1945899171,15cyclictest11957-21nfsd419:52:130
1945899170,2cyclictest993-21dbus-daemon21:47:160
1945899170,2cyclictest4232-21expr22:32:100
1945899170,2cyclictest3050-21cut20:35:010
1945899170,2cyclictest22949-21apt-key00:00:010
1945899170,2cyclictest16992-21latency_hist23:50:000
1945899170,16cyclictest9520-21pzem_current21:42:170
1945899170,16cyclictest7119-21ntpq00:27:170
1945899170,16cyclictest32599-21basename22:25:000
1945899170,16cyclictest30007-21ps19:27:170
1945899170,16cyclictest2615-21expr19:37:110
1945899170,16cyclictest18021-21cut21:02:100
1945899170,16cyclictest1603-21sendmail_mailqu23:22:170
1945899170,16cyclictest1522-21lxd23:06:320
1945899170,16cyclictest14774-21cut20:57:100
1945899170,16cyclictest14425-21perf22:50:000
1945899170,16cyclictest1161-21snapd21:56:590
1945899170,16cyclictest10451-21cut22:42:140
19460991614,1cyclictest9035-21latency19:47:132
19460991614,1cyclictest3989-21H222:02:192
19460991614,1cyclictest0-21swapper/222:07:122
19460991614,1cyclictest0-21swapper/221:20:092
19460991613,2cyclictest1987-21pzem_energy20:32:172
19460991613,2cyclictest14370-21expr21:52:102
1946099160,1cyclictest4099-21H222:02:192
1946099160,1cyclictest0-21swapper/222:21:442
1946099160,15cyclictest4035-21H222:02:192
1946099160,15cyclictest0-21swapper/222:02:112
19459991615,1cyclictest21-21ksoftirqd/100:11:011
19459991615,1cyclictest21-21ksoftirqd/100:11:011
19459991614,1cyclictest1141-21snapd21:16:591
19459991614,1cyclictest0-21swapper/123:45:141
19459991614,1cyclictest0-21swapper/122:37:141
19459991614,1cyclictest0-21swapper/122:22:151
19459991614,1cyclictest0-21swapper/100:00:021
1945999161,14cyclictest0-21swapper/119:51:421
1945999160,1cyclictest19992-21grep19:12:121
1945999160,15cyclictest3976-21H222:02:191
1945999160,15cyclictest3835-21dpkg22:32:091
1945999160,15cyclictest0-21swapper/123:07:181
1945999160,15cyclictest0-21swapper/122:45:001
19458991614,1cyclictest0-21swapper/022:57:130
19458991614,1cyclictest0-21swapper/022:52:080
19458991614,1cyclictest0-21swapper/020:22:090
1945899161,15cyclictest9-21ksoftirqd/020:51:150
1945899160,2cyclictest8447-21apache_accesses00:32:080
1945899160,1cyclictest0-21swapper/000:22:100
1945899160,15cyclictest3976-21H222:02:190
1945899160,15cyclictest3235-21cat23:27:090
1945899160,15cyclictest24862-21expr20:17:110
1945899160,15cyclictest10172-21latency20:47:140
1945899160,15cyclictest0-21swapper/023:40:220
1945899160,15cyclictest0-21swapper/023:37:120
1945899160,15cyclictest0-21swapper/021:26:250
1945899160,15cyclictest0-21swapper/020:11:370
1945899160,15cyclictest0-21swapper/000:05:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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