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2025-08-27 - 14:31
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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 rackdslot1.osadl.org (updated Wed Aug 27, 2025 00:45:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
306321650,6sleep31054799cyclictest23:30:183
2847191660,3ptp4l12102-21ntpq20:20:261
2847191640,5ptp4l0-21swapper/022:10:200
2847191620,4ptp4l0-21swapper/122:05:171
2847191600,4ptp4l0-21swapper/119:31:161
2847191590,4ptp4l0-21swapper/022:03:410
2847191590,3ptp4l22587-21hddtemp_smartct19:35:180
2847191590,3ptp4l0-21swapper/200:38:172
2847191590,3ptp4l0-21swapper/023:55:300
2847191580,4ptp4l0-21swapper/223:38:362
2847191580,4ptp4l0-21swapper/122:35:201
2847191580,3ptp4l0-21swapper/123:46:061
2847191580,3ptp4l0-21swapper/121:43:111
2847191580,3ptp4l0-21swapper/021:40:270
2847191580,2ptp4l0-21swapper/120:05:191
2847191570,5ptp4l0-21swapper/123:35:181
2847191570,4ptp4l0-21swapper/319:17:453
2847191570,4ptp4l0-21swapper/022:28:440
2847191570,4ptp4l0-21swapper/021:53:540
2847191570,4ptp4l0-21swapper/019:23:150
2847191570,3ptp4l20948-21/usr/sbin/munin23:00:250
2847191570,3ptp4l0-21swapper/323:13:103
2847191570,3ptp4l0-21swapper/221:05:182
2847191570,3ptp4l0-21swapper/220:00:352
2847191570,3ptp4l0-21swapper/220:00:352
2847191570,3ptp4l0-21swapper/122:20:311
2847191570,12ptp4l0-21swapper/021:35:220
2847191560,4ptp4l0-21swapper/320:59:463
2847191560,4ptp4l0-21swapper/020:15:090
2847191560,3ptp4l0-21swapper/120:56:391
2847191560,3ptp4l0-21swapper/120:42:541
2847191560,13ptp4l0-21swapper/121:17:001
2847191560,13ptp4l0-21swapper/121:17:001
2847191550,4ptp4l0-21swapper/020:32:220
2847191550,3ptp4l0-21swapper/020:40:180
2847191550,3ptp4l0-21swapper/020:20:230
2847191550,15ptp4l0-21swapper/022:55:210
2847191550,12ptp4l8518-21diskstats19:05:173
2847191550,11ptp4l8201-21apt-get19:05:152
2847191540,4ptp4l0-21swapper/323:45:343
2847191540,4ptp4l0-21swapper/323:43:143
2847191540,4ptp4l0-21swapper/323:25:243
2847191540,3ptp4l0-21swapper/119:20:231
2847191540,3ptp4l0-21swapper/000:27:140
2847191530,4ptp4l0-21swapper/320:28:383
2847191530,4ptp4l0-21swapper/220:55:032
2847191530,4ptp4l0-21swapper/023:15:130
2847191530,4ptp4l0-21swapper/023:06:210
2847191530,4ptp4l0-21swapper/022:20:550
2847191530,4ptp4l0-21swapper/020:01:510
2847191530,4ptp4l0-21swapper/020:01:510
2847191530,3ptp4l0-21swapper/022:44:190
2847191530,3ptp4l0-21swapper/021:05:250
2847191520,4ptp4l0-21swapper/323:06:293
2847191520,3ptp4l0-21swapper/223:30:192
2847191520,3ptp4l0-21swapper/122:00:201
2847191520,3ptp4l0-21swapper/020:05:270
2847191510,4ptp4l0-21swapper/220:25:452
2847191510,4ptp4l0-21swapper/023:36:450
2847191510,4ptp4l0-21swapper/023:11:530
2847191510,4ptp4l0-21swapper/021:02:340
2847191510,4ptp4l0-21swapper/020:12:170
2847191510,3ptp4l0-21swapper/022:30:450
2847191510,3ptp4l0-21swapper/000:16:520
2847191500,4ptp4l0-21swapper/321:08:133
2847191500,4ptp4l0-21swapper/023:21:280
2847191500,4ptp4l0-21swapper/021:26:060
2847191500,4ptp4l0-21swapper/021:18:470
2847191500,4ptp4l0-21swapper/021:18:470
2847191500,4ptp4l0-21swapper/020:50:430
2847191500,4ptp4l0-21swapper/000:23:240
2847191500,4ptp4l0-21swapper/000:07:260
2847191500,3ptp4l0-21swapper/320:52:103
2847191500,3ptp4l0-21swapper/019:26:270
2847191500,11ptp4l0-21swapper/122:45:471
2847191490,4ptp4l0-21swapper/319:54:063
2847191490,4ptp4l0-21swapper/222:52:242
2847191490,4ptp4l0-21swapper/021:22:120
2847191490,4ptp4l0-21swapper/019:44:420
2847191490,4ptp4l0-21swapper/000:02:160
2847191490,3ptp4l0-21swapper/122:17:011
2847191490,3ptp4l0-21swapper/022:48:380
2847191490,3ptp4l0-21swapper/021:30:070
2847191490,3ptp4l0-21swapper/019:57:550
2847191490,13ptp4l0-21swapper/200:30:242
2847191490,11ptp4l0-21swapper/020:45:330
2847191480,4ptp4l0-21swapper/020:55:100
2847191480,3ptp4l0-21swapper/023:53:190
2847191460,9ptp4l4580-21gpgv22:25:011
2847191460,4ptp4l0-21swapper/323:17:413
2847191460,4ptp4l0-21swapper/321:42:003
2847191460,4ptp4l0-21swapper/319:21:463
2847191460,4ptp4l0-21swapper/300:24:593
2847191460,3ptp4l207-21systemd-journal23:20:022
2849491450,11getstats0-21swapper/022:09:490
2847191450,9ptp4l0-21swapper/223:08:512
2847191450,4ptp4l26793-21apt-get19:45:150
2847191450,4ptp4l15602-21apt-get20:30:141
2847191450,4ptp4l0-21swapper/120:28:401
2847191450,4ptp4l0-21swapper/100:04:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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