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2025-11-21 - 20:10
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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 rackcslot4.osadl.org (updated Fri Nov 21, 2025 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34701312261187,28sleep00-21swapper/007:06:330
34702572256178,28sleep10-21swapper/107:07:561
35093992630,5sleep00-21swapper/008:45:150
125899620,4rtkit-daemon3519223-21apt-get09:10:111
125899600,3rtkit-daemon0-21swapper/110:59:121
125899580,6rtkit-daemon1257-21rtkit-daemon09:45:121
125899570,3rtkit-daemon0-21swapper/109:04:091
125899550,3rtkit-daemon0-21swapper/112:03:521
125899550,3rtkit-daemon0-21swapper/111:04:261
125899550,3rtkit-daemon0-21swapper/108:45:261
125899550,3rtkit-daemon0-21swapper/107:50:221
125899540,5rtkit-daemon3518962-21diskmemload12:28:201
125899540,3rtkit-daemon0-21swapper/107:33:011
125899530,4rtkit-daemon1257-21rtkit-daemon09:07:051
125899530,3rtkit-daemon0-21swapper/108:20:301
125899520,5rtkit-daemon1257-21rtkit-daemon08:02:011
125899520,4rtkit-daemon1257-21rtkit-daemon09:50:071
125899520,3rtkit-daemon0-21swapper/107:20:151
125899520,24rtkit-daemon3478565-21GUsbEventThread07:44:061
125899510,3rtkit-daemon0-21swapper/112:22:361
125899510,20rtkit-daemon3621829-21ssh11:24:291
125899500,20rtkit-daemon1257-21rtkit-daemon07:17:281
125899500,19rtkit-daemon0-21swapper/010:07:541
125899490,18rtkit-daemon1257-21rtkit-daemon11:05:251
125899490,18rtkit-daemon0-21swapper/012:09:051
125899490,18rtkit-daemon0-21swapper/012:09:051
35694992480,6sleep126-21ksoftirqd/110:15:181
125899470,4rtkit-daemon1257-21rtkit-daemon07:49:471
125899470,21rtkit-daemon1257-21rtkit-daemon09:58:221
34818262450,1chrt3481069-21/usr/sbin/munin07:35:210
125899440,16rtkit-daemon1257-21rtkit-daemon11:56:331
125899430,13rtkit-daemon0-21swapper/010:34:011
35849822420,3sleep00-21swapper/010:35:040
125899410,5rtkit-daemon3476158-21which07:20:210
125899410,3rtkit-daemon0-21swapper/111:51:561
125899410,14rtkit-daemon0-21swapper/010:35:231
125899410,14rtkit-daemon0-21swapper/007:39:221
125899400,5rtkit-daemon3573360-40apt-check10:20:091
125899400,4rtkit-daemon3611362-21apt-get11:10:121
125899400,13rtkit-daemon0-21swapper/008:31:061
125899390,3rtkit-daemon0-21swapper/110:46:371
125899390,3rtkit-daemon0-21swapper/108:51:001
125899390,13rtkit-daemon0-21swapper/008:29:071
35892562380,2sleep10-21swapper/110:40:211
125899380,5rtkit-daemon3658536-21ssh12:13:390
125899380,4rtkit-daemon3588423-1kworker/1:2H11:35:180
125899380,3rtkit-daemon0-21swapper/112:16:051
125899380,3rtkit-daemon0-21swapper/111:26:241
125899380,3rtkit-daemon0-21swapper/110:50:391
125899370,5rtkit-daemon3542043-21ssh09:39:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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