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2026-08-25 - 10:12
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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 Aug 25, 2026 00:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1426299200,1cyclictest0-21swapper/020:50:160
1426299200,19cyclictest870-21systemd-logind23:18:520
1426499192,16cyclictest23917-21cat20:24:562
1426499192,16cyclictest17623-21taskset23:01:502
14264991914,1cyclictest0-21swapper/221:12:292
1426499190,16cyclictest3985-21H222:10:212
1426499190,16cyclictest3983-21H222:10:212
1426399193,15cyclictest32289-21sed22:30:221
1426399192,2cyclictest2612-21grep19:45:161
1426399192,16cyclictest8685-21cpuspeed_turbos21:50:121
1426399192,16cyclictest8685-21cpuspeed_turbos21:50:121
14263991917,1cyclictest21-21ksoftirqd/120:28:401
14263991917,1cyclictest0-21swapper/123:21:391
1426399191,17cyclictest30328-21cpuspeed_turbos20:35:131
14262991915,1cyclictest0-21swapper/023:28:430
1426299190,16cyclictest3989-21H222:10:210
1426299190,16cyclictest3985-21H222:10:210
1426499182,15cyclictest92992sleep223:51:072
14264991815,2cyclictest19817-21grep00:10:202
14264991815,2cyclictest13682-21switchtime21:00:212
14264991814,3cyclictest3981-21H222:10:212
1426499181,16cyclictest5675-21ps22:40:202
1426499181,16cyclictest26750-21chrt20:25:562
1426499181,16cyclictest15800-21cut19:10:182
1426499180,3cyclictest0-21swapper/221:17:422
1426499180,2cyclictest4035-21H222:10:212
1426499180,1cyclictest0-21swapper/219:20:172
1426499180,1cyclictest0-21swapper/200:34:552
1426499180,16cyclictest17559-21cpuspeed_turbos19:15:152
1426399184,12cyclictest0-21swapper/122:10:161
14263991816,1cyclictest21-21ksoftirqd/120:30:131
14263991815,2cyclictest24759-21sed22:20:001
14263991815,2cyclictest21971-21cat20:20:141
1426399181,2cyclictest0-21swapper/119:45:011
14263991810,6cyclictest0-21swapper/121:20:001
1426399180,2cyclictest13552-21if_eno100:00:131
1426399180,2cyclictest13552-21if_eno100:00:131
1426399180,17cyclictest1829-21systemd-journal21:26:361
1426399180,17cyclictest0-21swapper/100:35:111
1426399180,16cyclictest3985-21H222:10:211
1426399180,16cyclictest3976-21H222:10:211
1426299182,15cyclictest18019-21cut22:05:200
1426299182,15cyclictest148902sleep000:02:270
1426299182,15cyclictest148902sleep000:02:270
14262991815,2cyclictest527-21nfsd421:35:180
14262991815,2cyclictest2944-21ls22:35:210
14262991812,4cyclictest27478-21needreboot21:25:150
1426299180,2cyclictest3981-21H222:10:210
1426299180,17cyclictest21242-21cut00:15:010
14264991715,1cyclictest3981-21H222:10:212
14264991715,1cyclictest0-21swapper/222:25:022
14264991715,1cyclictest0-21swapper/222:05:232
14264991715,1cyclictest0-21swapper/222:00:232
14264991714,2cyclictest3414-21master19:55:092
14264991714,2cyclictest30926-21cut23:25:202
14264991714,2cyclictest301-21fschecks_time23:30:142
14264991714,2cyclictest24419-21smtpd22:16:462
14264991714,2cyclictest12176-21kernelversion21:55:172
14264991714,2cyclictest11562-21missed_timers20:00:182
14264991714,2cyclictest0-21swapper/222:59:342
14264991713,3cyclictest31061-21sshd21:31:372
1426499170,2cyclictest7218-21expr21:45:222
1426499170,2cyclictest4539-21switchtime23:35:322
1426499170,2cyclictest4035-21H222:10:212
1426499170,2cyclictest25125-21nfsd423:15:182
1426499170,2cyclictest21887-21hddtemp_smartct23:10:152
1426499170,2cyclictest1145-21expr20:40:142
1426499170,2cyclictest1079-21cups-browsed20:05:222
1426499170,16cyclictest5049-21python321:45:002
1426499170,16cyclictest4599-21cat19:49:562
1426499170,16cyclictest3978-21H222:10:212
1426499170,16cyclictest3978-21H222:10:212
1426499170,16cyclictest3767-21/usr/sbin/munin20:45:152
1426499170,16cyclictest32453-21sed20:39:002
1426499170,16cyclictest3221-21smtp22:37:382
1426499170,16cyclictest31991-21expr21:35:132
1426499170,16cyclictest30859-21cat22:30:142
1426499170,16cyclictest21465-21latency_hist20:20:022
1426499170,16cyclictest21109-21processes22:10:182
1426499170,16cyclictest1526-21lxd19:34:522
1426499170,16cyclictest14495-21snapd20:50:282
1426499170,16cyclictest11996-21perf22:55:012
1426499170,16cyclictest10567-21taskset21:51:352
1426499170,16cyclictest10567-21taskset21:51:352
1426499170,16cyclictest10377-21cstates23:55:102
1426499170,16cyclictest0-21swapper/220:30:212
1426499170,15cyclictest3983-21H222:10:212
14263991716,1cyclictest21-21ksoftirqd/119:28:311
14263991715,1cyclictest0-21swapper/119:35:051
14263991714,2cyclictest5569-21apt-key21:45:011
14263991714,2cyclictest3981-21H222:10:211
14263991714,2cyclictest2867-21sed22:35:201
14263991714,2cyclictest21588-21apt-config00:15:021
14263991714,2cyclictest14550-21snapd19:30:281
14263991714,2cyclictest12387-21expr21:00:141
14263991713,3cyclictest4035-21H222:10:211
1426399171,1cyclictest0-21swapper/123:54:591
1426399171,1cyclictest0-21swapper/120:05:121
1426399171,15cyclictest78062chrt23:41:531
1426399170,2cyclictest7742-21/usr/sbin/munin22:45:151
1426399170,2cyclictest7682-21cat20:50:181
1426399170,2cyclictest22549-21ntpq23:10:181
1426399170,2cyclictest21138-21dpkg00:15:011
1426399170,2cyclictest17642-21expr19:15:151
1426399170,2cyclictest17378-21latency_hist21:10:001
1426399170,2cyclictest15242-21grep22:00:191
1426399170,2cyclictest12815-21cron20:05:001
1426399170,1cyclictest3979-21H222:10:211
1426399170,16cyclictest9291-21/usr/sbin/munin20:55:211
1426399170,16cyclictest9291-21/usr/sbin/munin20:55:211
1426399170,16cyclictest6514-21cut20:50:011
1426399170,16cyclictest4434-21grep22:40:131
1426399170,16cyclictest3976-21H222:10:211
1426399170,16cyclictest3973-21awk21:40:191
1426399170,16cyclictest30063-21fschecks_time23:25:141
1426399170,16cyclictest27781-21cut22:25:011
1426399170,16cyclictest26700-21cut00:25:221
1426399170,16cyclictest26700-21cut00:25:221
1426399170,16cyclictest15892-21snapd00:07:581
1426399170,16cyclictest14857-21munin-plugin-st23:00:011
1426399170,15cyclictest3983-21H222:10:211
14262991714,2cyclictest6708-21switchtime19:50:210
14262991714,2cyclictest4035-21H222:10:210
14262991714,2cyclictest31220-21fschecks_count00:35:130
14262991714,2cyclictest31035-21sessionclean19:39:010
14262991714,2cyclictest27222-21taskset22:22:230
14262991714,2cyclictest23572-21vmstat20:20:240
14262991714,2cyclictest17354-21netstat20:10:190
14262991714,2cyclictest14496-21snapd19:12:410
14262991714,2cyclictest13981-21/usr/sbin/munin22:55:210
14262991714,2cyclictest12553-21expr21:00:140
1426299171,2cyclictest10151-21lxd19:59:100
1426299170,2cyclictest4099-21H222:10:210
1426299170,2cyclictest4099-21H222:10:210
1426299170,2cyclictest14550-21snapd21:50:280
1426299170,2cyclictest14550-21snapd21:50:280
1426299170,2cyclictest11078-21sed20:55:210
1426299170,2cyclictest11078-21sed20:55:210
1426299170,16cyclictest7157-21sh23:40:200
1426299170,16cyclictest5601-21lxd20:06:510
1426299170,16cyclictest3990-21H222:10:210
1426299170,16cyclictest3989-21H222:10:210
1426299170,16cyclictest26333-21expr19:30:120
1426299170,16cyclictest26167-21ntpq20:25:200
1426299170,16cyclictest23564-21cut23:15:000
1426299170,16cyclictest20368-21apt-key19:20:020
1426299170,16cyclictest20176-21nfsd420:15:190
1426299170,16cyclictest1522-21lxd23:38:360
1426299170,16cyclictest14505-21snapd19:18:020
1426299170,16cyclictest12318-21sed20:00:220
1426299170,16cyclictest11286-21awk23:55:130
1426299170,15cyclictest0-21swapper/023:46:030
14264991614,1cyclictest0-21swapper/222:20:122
14264991614,1cyclictest0-21swapper/221:25:112
14264991613,2cyclictest5655-21fschecks_count19:50:152
14264991613,2cyclictest27095-21expr23:20:132
1426499160,2cyclictest6176-21expr23:40:152
1426499160,2cyclictest23559-21/usr/sbin/munin21:20:172
1426499160,1cyclictest0-21swapper/222:45:182
1426499160,1cyclictest0-21swapper/200:25:142
1426499160,1cyclictest0-21swapper/200:25:142
1426499160,15cyclictest9545-21cut20:55:132
1426499160,15cyclictest9545-21cut20:55:132
1426499160,15cyclictest216622chrt00:15:412
1426499160,15cyclictest16731-21df20:10:152
1426499160,15cyclictest15568-21cpu00:05:152
14263991614,1cyclictest86372chrt23:47:301
14263991614,1cyclictest19382-21ls20:15:151
14263991614,1cyclictest0-21swapper/123:05:051
14263991614,1cyclictest0-21swapper/122:05:151
14263991614,1cyclictest0-21swapper/121:55:181
14263991614,1cyclictest0-21swapper/120:40:171
14263991614,1cyclictest0-21swapper/119:50:171
14263991614,1cyclictest0-21swapper/119:20:181
1426399160,2cyclictest17622-21processes20:10:211
1426399160,15cyclictest536-21grep21:35:181
1426399160,15cyclictest399-20systemd-journal21:30:011
1426399160,15cyclictest3985-21H222:10:211
1426399160,15cyclictest28270-21cat00:30:141
1426399160,15cyclictest0-21swapper/122:50:151
1426399160,15cyclictest0-21swapper/119:55:181
1426399160,15cyclictest0-21swapper/119:10:501
14262991614,1cyclictest3983-21H222:10:210
14262991614,1cyclictest29366-21expr21:30:150
14262991614,1cyclictest0-21swapper/020:40:130
14262991614,1cyclictest0-21swapper/019:40:180
14262991613,2cyclictest27792-21expr20:30:150
1426299160,2cyclictest27417-21cron22:25:010
1426299160,2cyclictest15895-21cat00:05:160
1426299160,1cyclictest0-21swapper/023:05:140
1426299160,1cyclictest0-21swapper/022:45:170
1426299160,1cyclictest0-21swapper/000:25:150
1426299160,1cyclictest0-21swapper/000:25:140
1426299160,15cyclictest3981-21H222:10:210
1426299160,15cyclictest32484-21ls23:30:130
1426299160,15cyclictest0-21swapper/023:20:140
1426299160,15cyclictest0-21swapper/023:00:030
1426299160,15cyclictest0-21swapper/022:40:130
1426299160,15cyclictest0-21swapper/022:15:140
1426299160,15cyclictest0-21swapper/022:10:160
1426299160,15cyclictest0-21swapper/021:45:020
1426299160,15cyclictest0-21swapper/020:45:160
1426299160,15cyclictest0-21swapper/020:35:190
1426299160,15cyclictest0-21swapper/019:45:160
1426299160,14cyclictest0-21swapper/022:34:360
1426299160,0cyclictest0-21swapper/021:05:140
14264991514,0cyclictest0-21swapper/223:45:182
1426399150,14cyclictest0-21swapper/122:25:121
14262991514,1cyclictest0-21swapper/000:15:020
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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