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2026-08-25 - 13:08
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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 100 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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