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2026-05-25 - 14:37
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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 Mon May 25, 2026 00:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2107699247,2cyclictest29028-21munin-run22:15:011
2108199230,22cyclictest0-21swapper/220:55:172
2107699210,18cyclictest19925-21cron22:00:011
2107499212,4cyclictest0-21swapper/021:43:320
2107499212,18cyclictest0-21swapper/021:07:370
2107499212,18cyclictest0-21swapper/020:47:100
2108199200,15cyclictest0-21swapper/220:55:002
2107699204,15cyclictest0-21swapper/120:28:361
21074992018,1cyclictest9-21ksoftirqd/019:35:300
21074992011,5cyclictest0-21swapper/022:55:180
2107499200,17cyclictest0-21swapper/022:50:280
2108199192,16cyclictest11175-21grep23:35:232
2108199192,16cyclictest11175-21grep23:35:232
2108199190,2cyclictest22380-21sendmail_mailqu20:05:222
2108199190,18cyclictest0-21swapper/222:28:522
2108199190,16cyclictest3987-21H222:10:212
2108199190,16cyclictest3987-21H222:10:212
2108199190,16cyclictest3985-21H222:10:212
2108199190,16cyclictest3976-21H222:10:212
21076991917,1cyclictest0-21swapper/120:31:101
21076991914,2cyclictest0-21swapper/121:26:441
2107699190,2cyclictest3989-21H222:10:211
2107699190,2cyclictest3989-21H222:10:211
2107699190,18cyclictest0-21swapper/123:50:011
2107499192,2cyclictest27845-21cstates21:15:150
2107499192,16cyclictest101rcuc/020:50:120
21074991917,1cyclictest26846-21expr00:05:160
21074991916,2cyclictest1100-21snmpd20:43:100
21074991915,3cyclictest0-21swapper/019:10:440
21074991914,2cyclictest3991-21H222:10:210
2107499190,2cyclictest3989-21H222:10:210
2107499190,18cyclictest22987-21fschecks_time23:00:160
2108199182,15cyclictest15102-21cpuspeed_turbos21:50:142
21081991816,1cyclictest0-21swapper/220:45:182
21081991815,2cyclictest25287-21sed22:05:222
21081991814,3cyclictest0-21swapper/223:05:002
2108199181,1cyclictest3989-21H222:10:212
2108199180,2cyclictest4099-21H222:10:212
2108199180,2cyclictest3989-21H222:10:212
2108199180,2cyclictest3983-21H222:10:212
2108199180,2cyclictest3976-21H222:10:212
2108199180,17cyclictest5593-21cpuspeed_turbos20:35:152
2108199180,16cyclictest3989-21H222:10:212
2108199180,16cyclictest3983-21H222:10:212
2108199180,15cyclictest4035-21H222:10:212
2108199180,15cyclictest4035-21H222:10:212
21076991816,1cyclictest0-21swapper/123:50:311
21076991815,2cyclictest20445-21touch22:00:011
21076991815,2cyclictest12894-21uname22:40:191
2107699181,16cyclictest4671-21missed_timers00:20:171
2107699181,16cyclictest18012-21cut22:50:191
2107699180,3cyclictest4036-21H222:10:211
2107699180,2cyclictest3989-21H222:10:211
2107699180,2cyclictest3989-21H222:10:211
2107699180,2cyclictest3985-21H222:10:211
2107699180,2cyclictest3983-21H222:10:211
2107699180,2cyclictest3976-21H222:10:211
2107699180,17cyclictest4035-21H222:10:211
2107699180,17cyclictest3987-21H222:10:211
2107699180,17cyclictest3983-21H222:10:211
2107699180,17cyclictest3976-21H222:10:211
2107699180,16cyclictest3976-21H222:10:211
2107499182,15cyclictest9-21ksoftirqd/023:35:160
2107499182,15cyclictest9-21ksoftirqd/023:35:150
2107499182,15cyclictest9-21ksoftirqd/023:30:000
2107499182,15cyclictest9-21ksoftirqd/021:45:120
2107499182,15cyclictest9-21ksoftirqd/021:20:180
2107499182,15cyclictest0-21swapper/023:05:120
21074991816,1cyclictest9-21ksoftirqd/022:12:550
21074991816,1cyclictest9-21ksoftirqd/020:20:560
21074991816,1cyclictest91252chrt23:34:050
21074991816,1cyclictest101rcuc/020:05:180
21074991816,1cyclictest0-21swapper/022:30:140
21074991815,2cyclictest7674-21sessionclean20:39:000
2107499181,15cyclictest0-21swapper/019:50:190
2107499180,3cyclictest29284-21cpuspeed_turbos22:15:130
2107499180,2cyclictest3985-21H222:10:210
2107499180,2cyclictest3976-21H222:10:210
2107499180,17cyclictest26790-21cron19:20:010
2107499180,16cyclictest14591-21anvil23:45:020
2107499180,15cyclictest3979-21H222:10:210
2108199172,1cyclictest28-21ksoftirqd/220:30:392
21081991715,1cyclictest196242chrt21:56:042
21081991714,2cyclictest4099-21H222:10:212
21081991714,2cyclictest3987-21H222:10:212
21081991714,2cyclictest3987-21H222:10:212
21081991714,2cyclictest3981-21H222:10:212
21081991714,2cyclictest3979-21H222:10:212
21081991714,2cyclictest3976-21H222:10:212
21081991714,2cyclictest30130-21latency22:15:172
21081991714,2cyclictest10768-21nfsd400:30:182
21081991714,2cyclictest10095-21timerandwakeup20:40:222
21081991711,5cyclictest0-21swapper/219:45:132
21081991711,5cyclictest0-21swapper/219:45:132
2108199170,2cyclictest8640-21cron19:45:002
2108199170,2cyclictest6915-21plymouth22:30:212
2108199170,2cyclictest4099-21H222:10:212
2108199170,2cyclictest3981-21H222:10:212
2108199170,2cyclictest3979-21H222:10:212
2108199170,2cyclictest3976-21H222:10:212
2108199170,2cyclictest30114-21kernelversion20:20:162
2108199170,2cyclictest26873-21expr20:15:152
2108199170,2cyclictest18742-21tune2fs20:00:142
2108199170,1cyclictest0-21swapper/222:40:452
2108199170,1cyclictest0-21swapper/222:21:092
2108199170,16cyclictest4756-21df23:25:122
2108199170,16cyclictest4099-21H222:10:212
2108199170,16cyclictest4099-21H222:10:212
2108199170,16cyclictest3989-21H222:10:212
2108199170,16cyclictest3987-21H222:10:212
2108199170,16cyclictest3983-21H222:10:212
2108199170,16cyclictest3979-21H222:10:212
2108199170,16cyclictest31474-21cat00:10:212
2108199170,16cyclictest30237-21latency_hist21:20:002
2108199170,16cyclictest27642-21awk22:10:182
2108199170,16cyclictest22529-21cstates21:05:152
2108199170,16cyclictest12401-21cut21:45:122
2108199170,15cyclictest0-21swapper/219:11:022
2107699172,1cyclictest316982chrt00:12:101
2107699172,1cyclictest0-21swapper/121:15:191
21076991714,2cyclictest885-21ntp_states22:20:181
21076991714,2cyclictest6192-21sshd20:35:171
21076991714,2cyclictest3979-21H222:10:211
21076991714,2cyclictest3979-21H222:10:211
21076991714,2cyclictest3976-21H222:10:211
21076991714,2cyclictest3701-21needreboot22:25:171
21076991714,2cyclictest20330-21/usr/sbin/munin21:00:181
21076991714,2cyclictest1706-21df23:20:131
21076991714,2cyclictest12530-21apache_accesses23:40:111
21076991713,3cyclictest3991-21H222:10:211
2107699171,15cyclictest9159-21cpuspeed_turbos19:45:131
2107699171,15cyclictest9159-21cpuspeed_turbos19:45:131
2107699171,15cyclictest4099-21H222:10:211
2107699170,2cyclictest455-21plymouthd20:50:151
2107699170,2cyclictest455-21plymouthd20:05:201
2107699170,2cyclictest3983-21H222:10:211
2107699170,2cyclictest3983-21H222:10:211
2107699170,2cyclictest3979-21H222:10:211
2107699170,1cyclictest0-21swapper/119:40:521
2107699170,16cyclictest7246-21smartctl21:35:151
2107699170,16cyclictest6306-21apache_processe00:25:091
2107699170,16cyclictest6306-21apache_processe00:25:091
2107699170,16cyclictest4883-21smartctl23:25:151
2107699170,16cyclictest4099-21H222:10:211
2107699170,16cyclictest3991-21H222:10:211
2107699170,16cyclictest3989-21H222:10:211
2107699170,16cyclictest3987-21H222:10:211
2107699170,16cyclictest3983-21H222:10:211
2107699170,16cyclictest3983-21H222:10:211
2107699170,16cyclictest3981-21H222:10:211
2107699170,16cyclictest3979-21H222:10:211
2107699170,16cyclictest3976-21H222:10:211
2107699170,16cyclictest3976-21H222:10:211
2107699170,16cyclictest3414-21master23:56:171
2107699170,16cyclictest26612-21cpuspeed_turbos20:15:141
2107699170,16cyclictest17795-21grep20:55:181
2107699170,16cyclictest11044-21cpu20:45:141
2107699170,16cyclictest10340-21uname00:30:161
2107699170,16cyclictest0-21swapper/121:44:401
2107699170,16cyclictest0-21swapper/121:06:181
2107699170,15cyclictest3987-21H222:10:211
2107699170,15cyclictest3987-21H222:10:211
21074991715,1cyclictest9-21ksoftirqd/021:57:110
21074991715,1cyclictest7399-21grep00:25:150
21074991715,1cyclictest7399-21grep00:25:150
21074991715,1cyclictest3976-21H222:10:210
21074991715,1cyclictest14391-21sed23:40:210
21074991715,1cyclictest0-21swapper/022:00:170
21074991714,2cyclictest31325-21ntp_kernel_err19:25:180
21074991714,2cyclictest19771-21tr23:50:170
21074991714,2cyclictest15318-21taskset19:55:090
21074991714,2cyclictest0-21swapper/021:50:190
21074991714,1cyclictest0-21swapper/021:00:140
21074991713,3cyclictest18850-21ls20:00:140
21074991713,3cyclictest0-21swapper/022:35:020
2107499171,15cyclictest0-21swapper/000:35:150
2107499170,2cyclictest4035-21H222:10:210
2107499170,2cyclictest3983-21H222:10:210
2107499170,2cyclictest3981-21H222:10:210
2107499170,2cyclictest1523-21lxd21:14:510
2107499170,1cyclictest3989-21H222:10:210
2107499170,1cyclictest0-21swapper/023:20:150
2107499170,16cyclictest9392-21gpgv00:30:020
2107499170,16cyclictest714-21awk20:25:180
2107499170,16cyclictest3983-21H222:10:210
2107499170,16cyclictest3979-21H222:10:210
2107499170,16cyclictest32251-21munin-run00:15:010
2107499170,16cyclictest17291-21awk20:55:150
2107499170,16cyclictest1378-21awk00:15:190
2107499170,16cyclictest0-21swapper/022:45:140
21081991614,1cyclictest0-21swapper/222:35:042
21081991614,1cyclictest0-21swapper/222:00:022
2108199161,1cyclictest0-21swapper/223:20:112
2108199160,2cyclictest28980-21sed00:08:592
2108199160,15cyclictest3985-21H222:10:212
2108199160,15cyclictest24550-21if_err_eno120:10:162
2108199160,15cyclictest24550-21if_err_eno120:10:162
2108199160,15cyclictest0-21swapper/223:55:102
2108199160,15cyclictest0-21swapper/221:30:122
2108199160,15cyclictest0-21swapper/221:10:152
2108199160,15cyclictest0-21swapper/221:00:142
21076991613,2cyclictest5349-21apache_accesses22:30:111
21076991613,2cyclictest24859-21apache_accesses21:10:141
2107699160,15cyclictest14517-21apt-get19:55:011
2107699160,15cyclictest0-21swapper/121:20:131
21074991614,1cyclictest0-21swapper/022:20:150
21074991614,1cyclictest0-21swapper/020:10:110
21074991614,1cyclictest0-21swapper/020:10:100
21074991614,1cyclictest0-21swapper/019:45:110
21074991614,1cyclictest0-21swapper/019:45:110
21074991613,2cyclictest24128-21cstates00:00:140
21074991613,2cyclictest24128-21cstates00:00:140
2107499161,1cyclictest9-21ksoftirqd/022:05:130
2107499160,15cyclictest0-21swapper/021:35:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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