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2026-04-25 - 11:11
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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 Sat Apr 25, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1540299230,22cyclictest870-21systemd-logind00:08:521
15403992114,6cyclictest843-21systemd-network21:37:422
15402992113,7cyclictest870-21systemd-logind22:28:521
1540199213,15cyclictest0-21swapper/021:04:570
1540399202,1cyclictest0-21swapper/223:10:172
1540399200,19cyclictest0-21swapper/223:47:252
15402992015,4cyclictest3211-21JS22:10:211
1540199200,5cyclictest0-21swapper/020:11:560
15403991917,1cyclictest0-21swapper/200:30:192
1540399190,18cyclictest3982-21H222:10:212
1540399190,18cyclictest0-21swapper/219:30:022
1540299190,18cyclictest0-21swapper/121:49:271
1540299190,16cyclictest24590-21df00:10:131
15403991816,1cyclictest3987-21H222:10:212
15403991816,1cyclictest0-21swapper/219:21:592
15403991815,2cyclictest18795-21cpuspeed_turbos23:05:122
1540399181,2cyclictest20127-21cpuspeed_turbos22:10:122
1540399181,2cyclictest12686-21chrt22:54:272
1540399181,16cyclictest7620-21processes19:50:192
1540399180,3cyclictest0-21swapper/219:56:192
1540399180,2cyclictest16913-21nvmesmart_nvme021:05:172
1540399180,17cyclictest0-21swapper/222:35:202
1540299182,15cyclictest1100-21snmpd21:30:081
15402991815,2cyclictest3983-21H222:10:211
15402991814,3cyclictest870-21systemd-logind23:16:521
15402991814,3cyclictest444-21sshd20:35:481
1540299181,3cyclictest0-21swapper/119:10:121
1540299181,16cyclictest8918-21nfsd422:45:201
1540299180,3cyclictest14627-21wc20:05:141
1540299180,17cyclictest426-21systemd-udevd21:04:521
1540299180,17cyclictest27408-21anvil22:24:271
1540299180,17cyclictest1525-21lxd23:10:491
1540299180,16cyclictest29730-21https23:25:001
1540199182,15cyclictest13892-21pzem_current23:50:200
1540199182,0cyclictest0-21swapper/000:33:310
15401991814,3cyclictest931-21dpkg22:35:010
15401991814,3cyclictest1829-21systemd-journal19:50:380
1540199180,16cyclictest8947-21anvil23:44:420
1540199180,16cyclictest8947-21anvil23:44:410
15403991715,1cyclictest16584-21sessionclean20:09:002
15403991715,1cyclictest0-21swapper/221:50:162
15403991715,1cyclictest0-21swapper/220:45:192
15403991714,2cyclictest9212-21vmstat20:50:212
15403991714,2cyclictest3882-21/usr/sbin/munin21:40:142
15403991714,2cyclictest29097-21kernelversion20:30:172
15403991714,2cyclictest28365-21nfsd423:20:192
15403991714,2cyclictest27497-21kernelversion21:25:162
15403991714,2cyclictest27399-21sshd22:21:042
15403991714,2cyclictest16372-21/usr/sbin/munin23:55:172
15403991714,2cyclictest14266-21/usr/sbin/munin22:00:132
15403991714,2cyclictest14061-21irqstats22:55:152
15403991714,2cyclictest0-21swapper/219:40:222
1540399171,1cyclictest32654-21timerandwakeup20:35:212
1540399171,15cyclictest25221-21nfsd400:10:182
15403991710,5cyclictest0-21swapper/200:20:202
1540399170,2cyclictest5708-21ls23:35:202
1540399170,2cyclictest3987-21H222:10:212
1540399170,2cyclictest3985-21H222:10:212
1540399170,2cyclictest3983-21H222:10:212
1540399170,2cyclictest3409-21grep19:45:142
1540399170,2cyclictest32258-21chrt23:27:362
1540399170,2cyclictest29402-21grep21:30:142
1540399170,2cyclictest25574-21grep23:15:172
1540399170,2cyclictest20605-21grep00:05:002
1540399170,2cyclictest17450-21cpuspeed_turbos20:10:132
1540399170,2cyclictest13855-21missed_timers21:00:172
1540399170,16cyclictest9984-21/usr/sbin/munin20:55:152
1540399170,16cyclictest993-21dbus-daemon19:30:202
1540399170,16cyclictest6620-21expr21:45:162
1540399170,16cyclictest29335-21nfsd422:25:182
1540399170,16cyclictest22219-21cron22:15:002
1540399170,16cyclictest20952-21munin-run19:20:012
1540399170,16cyclictest14842-21latency_hist23:55:002
1540399170,16cyclictest1292-21nvmesmart_nvme000:25:182
1540399170,16cyclictest12225-21fschecks_time21:55:152
15402991714,2cyclictest5324-21taskset21:40:291
15402991714,2cyclictest4065-21fschecks_count19:45:161
15402991714,2cyclictest27373-21awk19:30:151
15402991714,2cyclictest2069-21systemd-udevd23:06:521
15402991714,2cyclictest19954-21/usr/sbin/munin20:15:141
15402991714,2cyclictest1829-21systemd-journal20:55:001
15402991713,3cyclictest0-21swapper/122:36:441
1540299171,15cyclictest993-21dbus-daemon22:55:181
1540299171,15cyclictest4099-21H222:10:211
1540299170,2cyclictest8105-21sshd19:50:381
1540299170,2cyclictest6617-21munin-run23:40:011
1540299170,2cyclictest3053-21systemd-logind22:34:521
1540299170,2cyclictest2872-21systemd-logind19:36:521
1540299170,2cyclictest16308-21sshd22:01:031
1540299170,2cyclictest16118-21df23:55:141
1540299170,2cyclictest11547-21apache_volume21:55:131
1540299170,2cyclictest10865-21nfsd423:45:191
1540299170,1cyclictest0-21swapper/120:10:521
1540299170,16cyclictest9742-21if_lxdbr019:55:151
1540299170,16cyclictest863-21avahi-daemon23:25:201
1540299170,16cyclictest7089-21cut20:50:021
1540299170,16cyclictest3985-21H222:10:211
1540299170,16cyclictest3983-21H222:10:211
1540299170,16cyclictest30876-21ntp_offset00:20:191
1540299170,16cyclictest1856-21systemd-udevd00:18:521
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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