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2026-04-07 - 08:08
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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 rack1slot3.osadl.org (updated Tue Apr 07, 2026 00:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31499999140,12cyclictest0-21swapper/320:40:113
31499999140,12cyclictest0-21swapper/300:20:123
314999991310,1cyclictest0-21swapper/323:40:123
31499999130,11cyclictest0-21swapper/321:55:123
314999991211,0cyclictest0-21swapper/322:15:113
314999991211,0cyclictest0-21swapper/319:10:103
314999991211,0cyclictest0-21swapper/300:35:103
31499999120,1cyclictest0-21swapper/321:30:173
31499999120,11cyclictest0-21swapper/323:45:113
31499999120,11cyclictest0-21swapper/300:25:123
31499999120,10cyclictest0-21swapper/320:00:123
31499999120,0cyclictest0-21swapper/322:30:193
314999991111,0cyclictest0-21swapper/320:25:113
31499999110,10cyclictest0-21swapper/323:55:173
31499999110,10cyclictest0-21swapper/323:10:173
31499999110,10cyclictest0-21swapper/320:45:133
31499999110,10cyclictest0-21swapper/300:30:103
31499999110,0cyclictest0-21swapper/323:30:013
31499999110,0cyclictest0-21swapper/321:40:013
31499999110,0cyclictest0-21swapper/320:50:113
31499999110,0cyclictest0-21swapper/320:10:013
31499999110,0cyclictest0-21swapper/319:50:123
31499999110,0cyclictest0-21swapper/319:25:113
31499999109,0cyclictest0-21swapper/322:50:133
31499999109,0cyclictest0-21swapper/300:15:123
31499999108,0cyclictest0-21swapper/319:55:113
314999991010,0cyclictest0-21swapper/322:00:153
314999991010,0cyclictest0-21swapper/321:50:193
314999991010,0cyclictest0-21swapper/319:20:113
31499999100,9cyclictest0-21swapper/320:30:113
31499999100,0cyclictest0-21swapper/323:55:013
31499999100,0cyclictest0-21swapper/321:19:593
31499999100,0cyclictest0-21swapper/320:20:133
3149999999,0cyclictest0-21swapper/323:35:133
3149999999,0cyclictest0-21swapper/322:55:113
3149999999,0cyclictest0-21swapper/322:40:113
3149999999,0cyclictest0-21swapper/322:35:113
3149999999,0cyclictest0-21swapper/321:45:173
3149999999,0cyclictest0-21swapper/319:30:173
3149999999,0cyclictest0-21swapper/319:30:173
3149999997,1cyclictest0-21swapper/322:10:133
3149999990,8cyclictest0-21swapper/323:05:193
3149999988,0cyclictest0-21swapper/321:00:133
3149999988,0cyclictest0-21swapper/320:55:113
3149999988,0cyclictest0-21swapper/300:00:193
3149999977,0cyclictest0-21swapper/323:00:173
3149999977,0cyclictest0-21swapper/321:29:553
3149999977,0cyclictest0-21swapper/320:35:113
3149999977,0cyclictest0-21swapper/319:15:173
3149999977,0cyclictest0-21swapper/300:05:123
3149999976,0cyclictest0-21swapper/322:45:123
3149999976,0cyclictest0-21swapper/319:35:123
3149999970,7cyclictest0-21swapper/300:10:023
3149999970,0cyclictest0-21swapper/322:25:123
314015271,4sleep30-21swapper/319:05:193
3149999966,0cyclictest0-21swapper/323:15:023
3149999966,0cyclictest0-21swapper/322:20:233
3149999966,0cyclictest0-21swapper/321:20:163
3149999960,6cyclictest0-21swapper/323:35:013
3149999960,6cyclictest0-21swapper/323:25:013
3149999960,5cyclictest0-21swapper/320:15:113
3149999955,0cyclictest0-21swapper/322:07:383
3149999955,0cyclictest0-21swapper/321:10:003
3149999955,0cyclictest0-21swapper/319:45:113
3149999954,0cyclictest0-21swapper/321:10:013
3149999954,0cyclictest0-21swapper/319:40:123
14039850,3rtkit-daemon0-21swapper/119:07:391
3149999944,0cyclictest0-21swapper/321:44:293
3149999944,0cyclictest0-21swapper/320:10:333
314478241,2sleep20-21swapper/219:05:422
14039840,3rtkit-daemon766-21snmpd19:54:401
14039840,2rtkit-daemon766-21snmpd23:29:071
14039840,2rtkit-daemon766-21snmpd22:55:321
14039840,2rtkit-daemon766-21snmpd00:26:131
14039840,2rtkit-daemon766-21snmpd00:00:581
14039840,2rtkit-daemon385315-21/usr/sbin/munin22:05:171
14039840,2rtkit-daemon1-21systemd23:57:551
14039840,2rtkit-daemon1-21systemd21:15:221
14039840,1rtkit-daemon328-21plymouthd22:25:151
424358230,2sleep0424540-21latency_hist23:40:010
389827230,2sleep2390031-21grep22:15:182
373106230,2sleep2373215-21find21:35:152
313151231,1sleep00-21swapper/019:05:120
14039830,2rtkit-daemon766-21snmpd23:12:491
14039830,2rtkit-daemon766-21snmpd20:00:161
14039830,2rtkit-daemon316960-21munin-node21:56:321
14039830,2rtkit-daemon1410-21sendmail-mta22:40:061
14039830,1rtkit-daemon772-21lldpd19:19:141
14039830,1rtkit-daemon772-21lldpd19:10:111
14039830,1rtkit-daemon772-21lldpd00:11:221
14039830,1rtkit-daemon769-21ntpd22:02:311
14039830,1rtkit-daemon769-21ntpd21:43:081
14039830,1rtkit-daemon622-21wpa_supplicant22:31:361
14039830,1rtkit-daemon442313-21ssh00:20:181
14039830,1rtkit-daemon361627-21diskmemload23:15:261
14039830,1rtkit-daemon361627-21diskmemload21:20:201
14039830,1rtkit-daemon356137-21apt-get20:55:111
14039830,1rtkit-daemon349746-21taskset20:35:201
14039830,1rtkit-daemon328-21plymouthd22:47:231
14039830,1rtkit-daemon328-21plymouthd21:25:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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