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2026-04-30 - 14:27
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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 Thu Apr 30, 2026 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
899993229,2cyclictest0-21swapper/120:30:161
89599262,23cyclictest15323-21nfsd420:30:170
89999230,5cyclictest0-21swapper/119:14:381
895992214,5cyclictest0-21swapper/021:00:160
906992018,1cyclictest8855-21grep21:15:162
89999202,17cyclictest0-21swapper/120:40:181
899992013,4cyclictest0-21swapper/121:47:261
89599204,15cyclictest0-21swapper/021:41:020
90699193,15cyclictest0-21swapper/223:36:122
90699192,16cyclictest12720-21grep20:25:192
906991917,1cyclictest0-21swapper/222:50:122
90699190,3cyclictest0-21swapper/221:50:002
89999190,2cyclictest30253-21users20:55:211
895991917,1cyclictest3989-21H222:10:210
895991917,1cyclictest3989-21H222:10:210
895991915,3cyclictest8205-21sh20:20:010
895991914,4cyclictest843-21systemd-network23:04:460
89599190,5cyclictest0-21swapper/023:46:510
90699182,15cyclictest28-21ksoftirqd/219:15:522
906991816,1cyclictest6901-21ntp_offset22:20:192
906991815,2cyclictest32012-21nfsd423:30:172
906991815,2cyclictest2845-21nfsd421:05:192
906991815,1cyclictest0-21swapper/222:05:002
90699181,16cyclictest4812-21cron23:45:012
90699181,16cyclictest3895-21smtpd22:10:582
90699180,3cyclictest1351-21lxd23:52:352
90699180,17cyclictest29181-21wc21:55:012
89999182,15cyclictest19735-21chrt00:22:051
89999182,15cyclictest0-21swapper/121:20:211
89999182,15cyclictest0-21swapper/121:20:201
89999181,16cyclictest32012-21nfsd423:30:181
89999180,3cyclictest5103-21munin-run22:20:001
89999180,17cyclictest18668-21cstates21:35:151
89999180,16cyclictest25049-21nfsd423:10:171
895991815,2cyclictest2855-21cut23:40:140
89599180,0cyclictest0-21swapper/023:20:000
90699172,1cyclictest28-21ksoftirqd/200:12:072
906991715,1cyclictest0-21swapper/223:12:502
906991715,1cyclictest0-21swapper/221:20:172
906991715,1cyclictest0-21swapper/221:20:162
906991715,1cyclictest0-21swapper/200:06:532
906991714,2cyclictest30442-21kernelversion20:00:162
906991714,2cyclictest22408-21cron23:05:012
90699171,15cyclictest10361-21ntp_kernel_err22:30:182
90699170,2cyclictest7135-21awk20:15:162
90699170,2cyclictest3855-21idleruntime20:10:182
90699170,2cyclictest3053-21systemd-logind21:56:512
90699170,2cyclictest25151-21cron20:50:012
90699170,2cyclictest22374-21missed_timers19:45:172
90699170,2cyclictest18477-21grep21:35:132
90699170,2cyclictest16788-21wc21:30:172
90699170,2cyclictest15296-21munin-run19:35:002
90699170,16cyclictest9545-21awk20:20:162
90699170,16cyclictest623-21anvil22:09:112
90699170,16cyclictest3987-21H222:10:212
90699170,16cyclictest3053-21systemd-logind22:16:512
90699170,16cyclictest28690-21ntp_offset23:20:172
90699170,16cyclictest22868-21sendmail_mailqu21:40:192
90699170,16cyclictest21125-21smtp00:29:532
90699170,16cyclictest20121-21/usr/sbin/munin20:40:162
90699170,16cyclictest19283-21cron20:40:002
90699170,16cyclictest14485-21pzem_energy21:25:212
90699170,16cyclictest14070-21/usr/sbin/munin20:30:132
90699170,16cyclictest12004-21sshd00:02:162
90699170,16cyclictest1085-21gdbus00:30:202
899991715,1cyclictest21-21ksoftirqd/123:08:181
899991715,1cyclictest21-21ksoftirqd/123:08:171
899991714,2cyclictest20786-21chrt00:25:161
899991714,2cyclictest1079-21cups-browsed20:45:211
89999171,2cyclictest1035-21thermald19:25:221
89999171,1cyclictest30740-21nfsd420:00:171
89999171,1cyclictest16702-21cat19:35:171
89999171,1cyclictest16702-21cat19:35:171
89999171,15cyclictest82232sleep122:25:191
89999171,15cyclictest196422chrt22:59:461
89999170,2cyclictest6217-21ps19:15:191
89999170,2cyclictest16114-21python300:15:011
89999170,2cyclictest1523-21lxd20:12:491
89999170,16cyclictest7049-21cron21:19:551
89999170,16cyclictest5960-21expr22:20:141
89999170,16cyclictest4978-21cpuspeed_turbos21:10:131
89999170,16cyclictest455-21plymouthd23:00:201
89999170,16cyclictest3979-21H222:10:211
89999170,16cyclictest3637-21grep22:10:201
89999170,16cyclictest31205-21cut22:00:171
89999170,16cyclictest27378-21fschecks_count21:50:141
89999170,16cyclictest24453-21expr19:50:121
89999170,16cyclictest21996-21tune2fs21:40:141
89999170,16cyclictest17612-21latency22:50:161
89999170,16cyclictest17216-21expr20:35:151
89999170,16cyclictest14482-21sshd21:25:211
89999170,16cyclictest1192-21grep20:05:181
89999170,15cyclictest3981-21H222:10:211
895991715,1cyclictest177722chrt21:32:080
895991715,1cyclictest0-21swapper/022:00:000
895991715,1cyclictest0-21swapper/000:10:460
895991714,2cyclictest8946-21ls20:20:140
895991714,2cyclictest21157-21turbostat00:30:010
895991714,2cyclictest20764-21fschecks_count20:40:150
895991714,2cyclictest1348-21lxd22:18:500
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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