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2025-07-14 - 23:03
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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 Jul 14, 2025 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
86599220,21cyclictest823-21systemd-network11:29:421
86599220,21cyclictest823-21systemd-network11:29:421
86499220,18cyclictest0-21swapper/009:20:160
87199210,17cyclictest0-21swapper/208:36:442
86599216,14cyclictest0-21swapper/110:09:241
86599210,1cyclictest0-21swapper/112:30:161
871992017,2cyclictest28696-21ntp_kernel_pll_09:50:202
87199192,2cyclictest22570-21latency_hist10:40:002
87199190,18cyclictest0-21swapper/212:05:552
87199190,17cyclictest29900-21proc_pri08:55:212
86599192,2cyclictest3672-21ntp_kernel_pll_11:00:191
86599192,16cyclictest17651-21smartctl09:30:231
86599190,17cyclictest0-21swapper/107:55:191
86499194,1cyclictest0-21swapper/010:01:150
864991916,2cyclictest9-21ksoftirqd/012:24:150
864991914,2cyclictest27013-21nfsd408:50:200
86499191,16cyclictest4532-21H212:26:330
86499190,3cyclictest4435-21snapd11:59:010
86499190,18cyclictest4503-21tr07:15:180
871991816,1cyclictest28-21ksoftirqd/207:46:272
871991815,2cyclictest30305-21cstates09:55:142
871991815,2cyclictest24219-21cut12:35:142
871991815,2cyclictest18398-21latency_hist12:25:012
871991815,2cyclictest11405-21fschecks_count09:20:162
87199180,17cyclictest0-21swapper/209:35:172
87199180,15cyclictest4538-21H212:26:332
86599183,1cyclictest0-21swapper/111:08:131
86599182,15cyclictest21-21ksoftirqd/109:46:471
865991815,2cyclictest9654-21apt-config12:10:001
865991815,2cyclictest18053-21chrt12:24:001
86599180,16cyclictest1591-21systemd08:25:011
86499182,15cyclictest0-21swapper/007:38:110
864991814,3cyclictest4523-21H212:26:330
86499181,2cyclictest0-21swapper/012:35:140
86499181,16cyclictest4581-21H212:26:330
86499181,16cyclictest18691-21chrt11:27:050
86499181,16cyclictest18691-21chrt11:27:050
86499181,15cyclictest0-21swapper/008:22:560
86499180,17cyclictest823-21systemd-network08:49:220
86499180,16cyclictest1555-21lxd10:35:010
871991715,1cyclictest4450-21chrt09:07:312
871991715,1cyclictest0-21swapper/211:45:172
871991715,1cyclictest0-21swapper/211:31:592
871991714,2cyclictest8985-21sed09:15:182
871991714,2cyclictest7276-21sendmail-mta11:08:212
871991714,2cyclictest4526-21H212:26:332
871991714,2cyclictest16238-21acpi09:30:152
871991714,2cyclictest13498-21/usr/sbin/munin09:25:182
87199171,15cyclictest9314-21taskset07:23:592
87199171,15cyclictest0-21swapper/209:00:152
87199170,2cyclictest4593-21H212:26:332
87199170,2cyclictest31662-21grep10:55:162
87199170,2cyclictest23508-21expr10:40:152
87199170,1cyclictest4526-21H212:26:332
87199170,16cyclictest7906-21processes10:10:212
87199170,16cyclictest7906-21processes10:10:212
87199170,16cyclictest4581-21H212:26:332
87199170,16cyclictest30672-21missed_timers08:00:182
87199170,16cyclictest30672-21missed_timers08:00:182
87199170,16cyclictest26711-21master09:47:432
87199170,16cyclictest26665-21cat07:55:012
87199170,16cyclictest2313-21cstates11:00:152
87199170,16cyclictest17983-21sessionclean07:39:002
87199170,16cyclictest1405-21lxd10:05:012
87199170,16cyclictest1405-21lxd10:03:012
87199170,16cyclictest1402-21lxd11:21:012
87199170,16cyclictest1338-21grep08:05:202
87199170,16cyclictest1086-21snmpd07:40:142
87199170,16cyclictest0-21swapper/211:10:192
87199170,16cyclictest0-21swapper/208:10:172
86599172,1cyclictest21-21ksoftirqd/109:25:401
865991715,1cyclictest4528-21H212:26:331
865991714,2cyclictest4536-21H212:26:331
865991714,2cyclictest4532-21H212:26:331
865991714,2cyclictest4113-21apt-key12:00:011
865991714,2cyclictest30799-21awk09:00:011
865991714,2cyclictest29815-21grep10:50:191
865991714,2cyclictest28540-21cut09:50:201
865991714,2cyclictest10637-21if_enp1s007:25:201
86599171,1cyclictest0-21swapper/109:42:181
86599171,15cyclictest9535-21pzem_voltage11:10:231
86599171,15cyclictest24083-21needreboot08:45:211
86599171,15cyclictest21423-21nfsd408:40:211
86599170,2cyclictest23599-21pzem_voltage11:35:231
86599170,2cyclictest23329-21expr10:40:151
86599170,2cyclictest21058-21proxymap09:37:291
86599170,2cyclictest18689-21ntp_kernel_pll_08:35:221
86599170,2cyclictest14743-21grep08:30:151
86599170,1cyclictest0-21swapper/111:55:181
86599170,16cyclictest8798-21awk08:20:111
86599170,16cyclictest8378-21nfsd407:20:241
86599170,16cyclictest6470-21expr08:15:141
86599170,16cyclictest4536-21H212:26:331
86599170,16cyclictest4528-21H212:26:331
86599170,16cyclictest19938-21munin-run10:35:001
86599170,16cyclictest14667-21egrep10:25:161
86599170,16cyclictest13701-21sed07:30:181
86599170,16cyclictest11471-21idleruntime11:15:201
86599170,16cyclictest1059-21cups-browsed11:40:211
864991715,1cyclictest0-21swapper/009:33:540
864991715,1cyclictest0-21swapper/008:05:010
864991715,1cyclictest0-21swapper/008:05:010
864991714,2cyclictest4940-21ntp_offset10:05:200
864991714,2cyclictest4538-21H212:26:330
864991714,2cyclictest4532-21H212:26:330
864991714,2cyclictest30019-21/usr/sbin/munin09:55:120
864991714,2cyclictest20833-21grep08:40:180
864991714,2cyclictest20739-21/usr/sbin/munin11:30:210
864991714,2cyclictest15877-21python311:25:000
864991714,2cyclictest15193-21switchtime09:25:240
864991714,1cyclictest0-21swapper/012:05:180
864991713,3cyclictest0-21swapper/009:36:480
86499171,15cyclictest22608-21grep07:45:210
86499170,2cyclictest937-21latency08:05:200
86499170,2cyclictest23923-21/usr/sbin/munin10:40:180
86499170,2cyclictest18235-21uname08:35:210
86499170,2cyclictest1402-21lxd11:49:010
86499170,2cyclictest12865-21latency10:20:160
86499170,2cyclictest10669-21expr12:10:170
86499170,16cyclictest6634-21cron12:05:000
86499170,16cyclictest4531-21H212:26:330
86499170,16cyclictest30478-21cpu11:50:150
86499170,16cyclictest23214-21awk12:30:240
86499170,16cyclictest1614-21https09:05:010
86499170,16cyclictest15031-21cut07:35:010
871991614,1cyclictest0-21swapper/211:15:182
871991614,1cyclictest0-21swapper/210:30:232
871991614,1cyclictest0-21swapper/210:20:132
871991614,1cyclictest0-21swapper/208:45:152
871991614,1cyclictest0-21swapper/208:40:172
871991614,1cyclictest0-21swapper/208:30:162
871991614,1cyclictest0-21swapper/208:25:012
871991614,1cyclictest0-21swapper/208:20:182
871991614,1cyclictest0-21swapper/207:55:172
871991614,1cyclictest0-21swapper/207:15:182
87199160,1cyclictest4776-21lxd11:35:012
87199160,1cyclictest2049-21systemd-journal10:25:232
87199160,1cyclictest0-21swapper/211:50:192
87199160,15cyclictest9886-21http_loadtime10:15:172
87199160,15cyclictest28451-21/usr/sbin/munin10:50:182
87199160,15cyclictest26890-21head08:50:202
87199160,15cyclictest22772-21kernelversion09:40:192
87199160,15cyclictest0-21swapper/212:15:192
87199160,15cyclictest0-21swapper/212:00:142
87199160,15cyclictest0-21swapper/211:55:182
87199160,15cyclictest0-21swapper/211:25:162
87199160,15cyclictest0-21swapper/211:25:162
87199160,15cyclictest0-21swapper/210:45:182
87199160,15cyclictest0-21swapper/207:25:182
87199160,15cyclictest0-21swapper/207:10:122
865991614,1cyclictest19997-21fschecks_time11:30:151
865991614,1cyclictest0-21swapper/111:20:241
865991614,1cyclictest0-21swapper/110:15:161
865991614,1cyclictest0-21swapper/110:05:001
865991614,1cyclictest0-21swapper/109:20:201
865991614,1cyclictest0-21swapper/109:15:151
865991614,1cyclictest0-21swapper/109:00:181
865991614,1cyclictest0-21swapper/108:06:481
865991614,1cyclictest0-21swapper/108:00:171
865991614,1cyclictest0-21swapper/108:00:171
865991613,2cyclictest6839-21expr10:10:151
865991613,2cyclictest6839-21expr10:10:151
865991613,2cyclictest22303-21irqstats07:45:201
86599160,1cyclictest0-21swapper/110:35:171
86599160,1cyclictest0-21swapper/110:20:131
86599160,1cyclictest0-21swapper/108:50:191
86599160,15cyclictest30947-21kernelversion09:55:171
86599160,15cyclictest30903-21cat11:50:151
86599160,15cyclictest25851-21grep07:50:211
86599160,15cyclictest25751-21apt-get10:45:131
86599160,15cyclictest16674-21awk07:35:201
86599160,15cyclictest10116-21dpkg12:10:001
86599160,15cyclictest0-21swapper/111:45:151
86599160,15cyclictest0-21swapper/110:55:171
86599160,15cyclictest0-21swapper/109:05:051
86599160,15cyclictest0-21swapper/108:10:241
864991614,1cyclictest0-21swapper/011:35:170
864991614,1cyclictest0-21swapper/011:15:260
864991614,1cyclictest0-21swapper/011:05:150
864991614,1cyclictest0-21swapper/011:00:180
864991614,1cyclictest0-21swapper/010:55:000
864991614,1cyclictest0-21swapper/010:30:180
864991614,1cyclictest0-21swapper/009:10:130
864991614,1cyclictest0-21swapper/008:30:230
864991614,1cyclictest0-21swapper/007:10:130
864991613,2cyclictest25748-21apache_volume10:45:120
864991613,2cyclictest25555-21df11:40:150
864991613,2cyclictest0-21swapper/010:10:150
864991613,2cyclictest0-21swapper/010:10:150
86499160,2cyclictest3094-21/usr/sbin/munin08:10:170
86499160,2cyclictest18654-21/usr/sbin/munin07:40:150
86499160,1cyclictest6724-21http_loadtime08:15:160
86499160,1cyclictest18813-21cstates12:25:140
86499160,1cyclictest0-21swapper/011:10:200
86499160,1cyclictest0-21swapper/007:58:170
86499160,1cyclictest0-21swapper/007:25:230
86499160,15cyclictest9178-21needreboot09:15:190
86499160,15cyclictest31630-21cpu10:55:160
86499160,15cyclictest0-21swapper/009:51:140
86499160,15cyclictest0-21swapper/009:45:140
86499160,15cyclictest0-21swapper/008:55:150
86499160,15cyclictest0-21swapper/008:25:170
86499160,15cyclictest0-21swapper/007:20:270
871991513,1cyclictest0-21swapper/211:40:172
865991512,2cyclictest4258-21apache_accesses07:15:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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