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2026-04-12 - 19:08
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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 rackdslot1.osadl.org (updated Sun Apr 12, 2026 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491620,3ptp4l28850-21/usr/sbin/munin11:10:203
134491610,4ptp4l0-21swapper/012:15:030
134491600,4ptp4l0-21swapper/107:55:231
134491590,5ptp4l25161-21ps08:40:240
134491590,19ptp4l0-21swapper/008:55:210
134491580,4ptp4l0-21swapper/211:47:402
134491580,3ptp4l8560-21memory08:05:210
134491580,2ptp4l0-21swapper/009:55:290
134491570,5ptp4l0-21swapper/207:07:192
134491560,3ptp4l0-21swapper/108:50:161
134491560,3ptp4l0-21swapper/108:50:161
134491560,3ptp4l0-21swapper/107:32:021
134491550,4ptp4l0-21swapper/011:35:570
134491550,4ptp4l0-21swapper/009:00:190
134491550,4ptp4l0-21swapper/007:35:360
134491550,3ptp4l0-21swapper/009:30:290
134491540,5ptp4l0-21swapper/109:33:521
134491540,4ptp4l0-21swapper/112:05:501
134491540,4ptp4l0-21swapper/107:11:061
134491540,4ptp4l0-21swapper/011:18:250
134491520,4ptp4l5951-21if_enp4s009:10:151
134491520,3ptp4l0-21swapper/109:17:111
134491520,2ptp4l21479-21apt-get07:25:121
134491510,5ptp4l0-21swapper/307:06:093
134491510,4ptp4l0-21swapper/012:24:180
134491510,4ptp4l0-21swapper/012:01:380
134491510,3ptp4l0-21swapper/107:15:151
134491510,3ptp4l0-21swapper/007:32:530
3352500,1sleep1330-21unixbench_singl11:15:281
134491500,4ptp4l16499-21chrt08:24:090
134491500,4ptp4l0-21swapper/211:30:362
134491500,4ptp4l0-21swapper/112:16:021
134491500,4ptp4l0-21swapper/008:10:360
134491500,3ptp4l20716-21timedrift09:40:260
134491500,3ptp4l0-21swapper/011:24:580
134491500,3ptp4l0-21swapper/008:15:470
134491500,2ptp4l0-21swapper/009:50:210
134491490,4ptp4l0-21swapper/310:07:183
134491490,4ptp4l0-21swapper/109:54:201
134491490,4ptp4l0-21swapper/012:13:460
134491490,4ptp4l0-21swapper/008:48:210
134491490,14ptp4l9-21ksoftirqd/012:34:280
134491480,4ptp4l0-21swapper/209:39:152
134491480,4ptp4l0-21swapper/108:24:001
134491480,4ptp4l0-21swapper/011:55:050
134491480,4ptp4l0-21swapper/010:56:160
134491480,4ptp4l0-21swapper/010:33:260
134491480,3ptp4l1301-21snmpd10:39:332
134491480,3ptp4l0-21swapper/110:23:031
134491480,3ptp4l0-21swapper/107:50:211
134491480,3ptp4l0-21swapper/007:44:470
134491470,4ptp4l0-21swapper/310:28:183
134491470,3ptp4l0-21swapper/110:01:541
134491470,3ptp4l0-21swapper/012:38:120
134491470,3ptp4l0-21swapper/012:09:500
134491470,3ptp4l0-21swapper/011:32:000
134491470,3ptp4l0-21swapper/010:12:320
134491470,12ptp4l0-21swapper/110:35:221
134491470,11ptp4l0-21swapper/311:35:283
134491460,3ptp4l33-21ksoftirqd/210:53:442
134491460,3ptp4l0-21swapper/108:56:301
134491460,3ptp4l0-21swapper/007:18:030
134491460,2ptp4l0-21swapper/009:22:470
134491460,17ptp4l0-21swapper/211:11:352
14330994539,3cyclictest41-21ksoftirqd/308:40:013
134491450,9ptp4l0-21swapper/209:03:222
134491450,4ptp4l26704-21apt-get12:15:132
134491450,4ptp4l0-21swapper/008:35:310
134491450,3ptp4l0-21swapper/010:20:430
134491450,3ptp4l0-21swapper/009:38:100
134491450,3ptp4l0-21swapper/009:10:580
134491450,3ptp4l0-21swapper/007:45:090
134491450,11ptp4l0-21swapper/212:10:462
134491440,5ptp4l0-21swapper/209:10:102
134491440,4ptp4l29026-21apt-get12:20:121
134491440,4ptp4l0-21swapper/311:40:343
134491440,3ptp4l0-21swapper/010:43:410
134491440,3ptp4l0-21swapper/010:43:410
134491440,2ptp4l14326-21cyclictest09:24:121
134491440,11ptp4l0-21swapper/111:20:441
134491440,10ptp4l0-21swapper/212:20:022
134491440,10ptp4l0-21swapper/109:38:581
134491430,9ptp4l0-21swapper/207:59:352
134491430,4ptp4l19184-21apt-get07:20:121
134491430,4ptp4l0-21swapper/111:49:421
134491430,2ptp4l21908-21kworker/2:110:05:522
134491430,10ptp4l0-21swapper/210:04:112
134491430,10ptp4l0-21swapper/209:46:042
134491420,9ptp4l0-21swapper/210:25:092
134491420,9ptp4l0-21swapper/208:36:592
134491420,9ptp4l0-21swapper/207:23:362
134491420,6ptp4l29996-21ls10:00:260
134491420,5ptp4l23467-21apt-get08:40:012
134491420,5ptp4l23408-21users10:55:273
134491420,4ptp4l28841-21diskstats08:50:140
134491420,4ptp4l28841-21diskstats08:50:140
134491420,4ptp4l16823-21apt-get08:25:121
134491420,3ptp4l8770-21irqstats10:25:171
134491420,3ptp4l0-21swapper/011:04:040
134491420,1ptp4l0-21swapper/310:45:293
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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