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2026-04-12 - 17:30
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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 50 highest latencies:
System rackdslot0.osadl.org (updated Sun Apr 12, 2026 12:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1052599247,16cyclictest21849-21mii-tool12:15:151
1052599230,5cyclictest0-21swapper/111:00:021
1052599220,18cyclictest0-21swapper/111:17:261
1052999214,13cyclictest10793-21latency_hist11:00:002
1052599210,3cyclictest0-21swapper/109:16:151
1052099202,1cyclictest0-21swapper/011:01:060
1052999192,2cyclictest21968-21chrt09:21:572
1052999192,16cyclictest376-21smtpd07:49:292
1052599192,1cyclictest0-21swapper/108:51:571
1052599190,5cyclictest0-21swapper/111:30:001
1052599190,5cyclictest0-21swapper/109:06:391
1052599190,3cyclictest0-21swapper/108:29:221
1052599190,17cyclictest426-21systemd-udevd09:48:511
1052099193,15cyclictest0-21swapper/011:06:180
10520991915,3cyclictest0-21swapper/008:29:130
10520991914,3cyclictest0-21swapper/009:25:220
1052099190,17cyclictest3976-21H222:10:210
10529991815,2cyclictest30253-21if_lxdbr008:40:162
10529991815,2cyclictest29803-21chrt07:41:132
1052999181,16cyclictest8297-21wc11:50:182
1052599183,1cyclictest0-21swapper/109:35:061
10525991816,1cyclictest0-21swapper/108:59:571
10525991816,1cyclictest0-21swapper/108:18:581
10525991816,1cyclictest0-21swapper/107:44:221
1052099182,2cyclictest28008-21grep07:40:140
10520991815,2cyclictest21626-21chrt07:28:390
10529991715,1cyclictest27375-21if_lxdbr010:30:162
10529991715,1cyclictest0-21swapper/210:10:172
10529991715,1cyclictest0-21swapper/209:34:162
10529991715,1cyclictest0-21swapper/208:47:022
10529991714,2cyclictest9898-21ls08:05:152
10529991714,2cyclictest29964-21timerwakeupswit09:35:232
10529991714,2cyclictest2990-21processes11:40:192
10529991714,2cyclictest1522-21lxd10:00:412
10529991714,2cyclictest1375-21munin-node10:28:182
10529991714,2cyclictest10160-21ntp_kernel_pll_09:00:202
1052999171,1cyclictest0-21swapper/208:55:002
1052999171,15cyclictest15748-21fschecks_count08:15:142
1052999170,3cyclictest0-21swapper/209:55:142
1052999170,2cyclictest1829-21systemd-journal09:08:392
1052999170,2cyclictest16754-21snapd10:37:482
1052999170,16cyclictest9289-21pickup11:33:422
1052999170,16cyclictest5846-21cat10:50:132
1052999170,16cyclictest4035-21H222:10:212
1052999170,16cyclictest3414-21master07:24:192
1052999170,16cyclictest25500-21fschecks_count07:35:172
1052999170,16cyclictest22834-21grep09:25:132
1052999170,16cyclictest20524-21missed_timers07:25:172
1052999170,16cyclictest2007-21systemd-journal11:18:242
1052999170,16cyclictest0-21swapper/211:00:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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