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2025-12-18 - 08:51
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack1slot3.osadl.org (updated Thu Dec 18, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24602999140,12cyclictest0-21swapper/323:20:143
24602999139,1cyclictest0-21swapper/323:15:133
24602999120,1cyclictest0-21swapper/321:55:123
24602999120,11cyclictest0-21swapper/323:35:203
24602999120,11cyclictest0-21swapper/322:20:123
24602999120,11cyclictest0-21swapper/321:04:553
24602999120,11cyclictest0-21swapper/320:45:113
24602999120,11cyclictest0-21swapper/319:55:103
24602999120,11cyclictest0-21swapper/319:25:173
24602999120,11cyclictest0-21swapper/300:35:143
24602999119,1cyclictest0-21swapper/319:15:113
246029991111,0cyclictest0-21swapper/321:40:113
246029991110,0cyclictest0-21swapper/323:55:123
24602999110,8cyclictest0-21swapper/322:55:113
24602999110,10cyclictest0-21swapper/320:10:163
24602999110,10cyclictest0-21swapper/319:20:173
24602999110,10cyclictest0-21swapper/300:10:173
24602999109,0cyclictest0-21swapper/323:50:113
24602999109,0cyclictest0-21swapper/323:25:143
24602999109,0cyclictest0-21swapper/323:10:113
24602999109,0cyclictest0-21swapper/322:50:133
24602999100,9cyclictest0-21swapper/319:35:183
24602999100,0cyclictest0-21swapper/321:05:133
24602999100,0cyclictest0-21swapper/320:25:183
24602999100,0cyclictest0-21swapper/319:10:013
24602999100,0cyclictest0-21swapper/300:25:193
2460299999,0cyclictest0-21swapper/323:45:113
2460299999,0cyclictest0-21swapper/321:35:123
2460299999,0cyclictest0-21swapper/321:15:113
2460299999,0cyclictest0-21swapper/320:40:123
2460299999,0cyclictest0-21swapper/320:20:193
2460299999,0cyclictest0-21swapper/319:40:183
2460299999,0cyclictest0-21swapper/300:20:173
2460299999,0cyclictest0-21swapper/300:05:213
2460299998,0cyclictest0-21swapper/321:00:003
2460299990,8cyclictest0-21swapper/323:35:013
2460299990,8cyclictest0-21swapper/322:40:183
2460299990,0cyclictest0-21swapper/320:40:003
2460299988,0cyclictest0-21swapper/322:19:153
2460299988,0cyclictest0-21swapper/322:10:193
2460299988,0cyclictest0-21swapper/322:03:273
2460299988,0cyclictest0-21swapper/320:19:563
2460299988,0cyclictest0-21swapper/300:00:133
2460299987,0cyclictest0-21swapper/319:45:123
2460299980,7cyclictest0-21swapper/321:25:183
244176281,4sleep30-21swapper/319:05:073
2460299977,0cyclictest0-21swapper/323:01:093
2460299977,0cyclictest0-21swapper/322:35:133
2460299977,0cyclictest0-21swapper/322:10:013
2460299977,0cyclictest0-21swapper/321:50:163
2460299977,0cyclictest0-21swapper/320:05:013
2460299976,0cyclictest0-21swapper/323:05:073
2460299975,1cyclictest0-21swapper/300:15:133
2460299970,7cyclictest0-21swapper/300:30:173
14039870,2rtkit-daemon0-21swapper/219:06:592
2460299966,0cyclictest0-21swapper/321:30:123
2460299966,0cyclictest0-21swapper/320:30:113
2460299965,0cyclictest0-21swapper/322:33:483
2460299960,1cyclictest0-21swapper/321:45:123
14039860,3rtkit-daemon318207-21/usr/sbin/munin22:10:132
281936252,2sleep0282115-21fw_packets20:40:140
2460299955,0cyclictest0-21swapper/320:05:133
2460299955,0cyclictest0-21swapper/319:50:133
2460299952,1cyclictest0-21swapper/322:45:123
2460299950,4cyclictest0-21swapper/319:30:143
14039850,3rtkit-daemon302813-21ssh21:33:152
14039850,2rtkit-daemon254075-21apt-get19:30:012
361831240,0sleep10-21swapper/123:52:311
341787240,3sleep0341869-21/usr/sbin/munin23:05:150
2460299944,0cyclictest0-21swapper/323:40:343
2460299944,0cyclictest0-21swapper/321:10:463
2460299944,0cyclictest0-21swapper/320:53:343
2460299943,0cyclictest0-21swapper/321:20:123
2460299940,2cyclictest0-21swapper/322:25:123
245540240,1sleep10-21swapper/119:06:061
245033241,1sleep00-21swapper/019:05:160
14039840,3rtkit-daemon766-21snmpd22:54:352
14039840,2rtkit-daemon769-21ntpd23:22:252
14039840,2rtkit-daemon766-21snmpd22:47:212
14039840,2rtkit-daemon766-21snmpd22:42:152
14039840,2rtkit-daemon766-21snmpd19:25:072
14039840,2rtkit-daemon621-21systemd-logind00:13:592
14039840,2rtkit-daemon292925-21diskmemload21:51:512
14039840,2rtkit-daemon1-21systemd23:55:472
14039840,2rtkit-daemon1-21systemd22:01:312
14039840,2rtkit-daemon1-21systemd00:37:032
300776230,0sleep2441rcuc/221:28:122
289337230,1sleep1289365-21apt-get21:00:131
14039830,2rtkit-daemon769-21ntpd00:22:232
14039830,2rtkit-daemon766-21snmpd20:40:012
14039830,1rtkit-daemon769-21ntpd23:46:232
14039830,1rtkit-daemon769-21ntpd21:41:482
14039830,1rtkit-daemon769-21ntpd20:03:232
14039830,1rtkit-daemon766-21snmpd23:36:302
14039830,1rtkit-daemon766-21snmpd23:05:592
14039830,1rtkit-daemon766-21snmpd22:21:522
14039830,1rtkit-daemon766-21snmpd21:22:532
14039830,1rtkit-daemon622-21wpa_supplicant21:56:562
14039830,1rtkit-daemon615-21rsyslogd19:50:232
14039830,1rtkit-daemon615-21rsyslogd00:30:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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